Abstract
Our knowledge of fetal physiology stems almost entirely from mammals other than the human. Most of the experimental evidence was produced in Artiodactyla, particularly in sheep and goat, and in rodents such as guinea pig, rabbit, rat, and mouse (Fig. 118.1) [75]. Only a few observations have been made in nonhuman primates. However, a number of responses and mechanisms in these species are phylogenetically old and hence may bear some relationship to those in the human. For example, the intrauterine environment as far as blood gas status and acid-base balance are concerned are largely similar in chronically instrumented fetal sheep and in human fetuses. Furthermore, the general neurohumoral circulatory and metabolic responses to acute and chronic O2 deficiency are comparable to some extent. Consequently, the chronically prepared sheep model has been most widely used to study fetal physiology. In this chapter an attempt is made to describe some important developmental features of the cardiovascular and respiratory system, some relevant aspects of energy metabolism and growth, and their integration by hormonal and nervous mechanisms.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
Acheson GH, Dawes GS, Mott JC (1957) Oxygen consumption and the arterial oxygen saturation in foetal and newborn lambs. J Physiol (Lond) 135:623–642
Acker H, Lübbers DW (1977) The kinetics of local tissue PO2 decrease after perfusion stop within the carotid body of the cat in vivo and in vitro. Pflugers Arch 369:135–140
Alexander DP, Forsling ML, Martin MJ, Nixon DA, Ratcliffe JG, Redstone D, Tunbridge D (1972) The effect of maternal hypoxia on fetal pituitary hormone release in the sheep. Biol Neonate 21:219–228
Alexander G (1964) Studies on the placenta of the sheep: effect of surgical reduction in the number of caruncles. J Reprod Fertil 7:307–322
Alexander G, Hales JRS, Stevens D, Donnelly JB (1987) Effects of acute and prolonged exposure to heat on regional blood flows in pregnant sheep. J Dev Physiol 9:1–15
Apgar VA (1953) A proposal for a new method of evaluation of the newborn infant. Curr Res Anesth Anal 32:260–267
Asakura H, Ball, KT, Power GG (1990) Interdependence of arterial PO2 and O2 consumption in the fetal sheep. J Dev Physiol 13:205–213
Ashwal S, Majcher JS, Longo LD (1981) Patterns of fetal lamb regional cerebral blood flow during and after prolonged hypoxia: Studies during the posthypoxic recovery period. Am J Obstet Gynecol 139:365–372
Avery, ME, Mead D (1959) Surface properties in relation to atelectasis and hyaline membrane disease. Am J Dis Child 97:517–523
Barclay AE, Franklin KJ, Prichard MML (1944) The foetal circulation and cardiovascular system, and the changes that they undergo at birth. Blackwell Scientific, Oxford
Barcroft J (1946) Researches on prenatal life. Blackwell Scientific, Oxford
Barett CT, Heymann MA, Rudolph AM (1972) Alpha- and beta-adrenergic function in fetal sheep. Am J Obstet Gynecol 89:252–260
Behrman RE, Less MH, Peterson EM, De Lannoy CW, Seeds AE (1970) Distribution of the circulation in normal and asphyxiated fetal primate. Am J Obstet Gynecol 108:956–969
Berger R, Gjedde A, Heck J, Müller E, Krieglstein J, Jensen A (1994) Extension of the 2-deoxyglucose method to the fetus in utero: theory and normal values for the cerebral glucose consumption in fetal guinea pigs. J Neurochem 63:271–279
Berger R, Jensen A, Krieglstein J, Steiglmann JP (1991) Effects of acute asphyxia on brain energy metabolism in fetal guinea pigs near term. J Dev Physiol 16:9–11
Berger R, Jensen A, Krieglstein J, Steiglmann JP (1991) Cerebral energy metabolism in guinea pig fetuses during development. J Dev Physiol 16:317–319
Berger R, Jensen A, Krieglstein J, Steiglmann JP (1992) Cerebral energy metabolism in immature and mature fetuses during acute asphyxia. J Dev Physiol 18:125–128
Bissonnette JM, Hohimer AR, Willeke GB (1989) Effect of asphyxia on respiratory activity in fetal sheep. J Dev Physiol 12:157–161
Blanco CE, Dawes GS, Walker DW (1983) Effect of hypoxia on polysynaptic hindlimb reflexes of unanesthetized fetal and newborn lambs. J Physiol (Lond) 339:453–466
Blanco CE, Dawes GS, Hanson MA, McCooke HB (1984). The response to hypoxia of arterial chemoreceptors in fetal sheep and new-born lambs. J Physiol (Lond) 351:25–37
Blanco CE, Dawes GS, Hanson MA, McCooke HB (1985) Studies of carotid baroreceptor afferents in fetal and newborn lambs. In: Jones CT, Nathanielsz PW (eds) Physiological development of the fetus and newborn. Academic, London, pp 595–598
Block BS, Schlafer DH, Wentworth RA, Kreitzer LA, Nathanielsz PW (1990) Intrauterine asphyxia and the breakdown of physiologic circulatory compensation in fetal sheep. Am J Obstet Gynecol 162:1325–1331
Block BS, Schlafer DH, Wentworth RA, Kreitzer LA, Nathanielsz PW (1990) Regional blood flow distribution in fetal sheep with intrauterine growth retardation produced by decreased umbilical placental perfusion. J Dev Physiol 13:81–85
Bocking AD, Harding R (1986) Effects of reduced uterine blood flow on electrocortical activity, breathing, and skeletal muscle activity in fetal sheep. Am J Obstet Gynecol 154:655–662
Bocking AD, McMillen IC, Harding R, Thornburn GD (1986) Effect of reduced uterine blood flow on fetal and maternal cortisol. J Dev Physiol 8:237–245
Boddy K, Dawes GS, Fisher R, Pinter S, Robinson JS (1974) Foetal respiratory movements, electrocortical and cardiovascular responses to hypoxaemia and hypercapnia in sheep. J Physiol (Lond) 243:599–618
Boddy K, Jones CT, Mantell C, Ratcliffe JG Robinson JS (1974) Changes in plasma ACTH and corticosteroid of the maternal and fetal sheep during hypoxia. Endocrinology 94:588–591
Braems G, Jensen A (1991) Hypoxia reduces oxygen consumption of fetal skeletal muscle cells in monolayer culture: a preliminary report. J Dev Physiol 16:209–215
Braems G, Dussler I, Jensen A (1990) Oxygen availability determines oxygen consumption of fetal myocardial cells in monolayer culture. Scientific program and abstracts, 36th annual meeting of the Society for Gynecologic Investigation, p 243
Brace RA, Cheung CY (1986) Fetal cardiovascular and endocrine responses to prolonged fetal hemorrhage. Am J Physiol 251:R417–R424
Brace RA (1987) Fetal blood volume responses to fetal haemorrhage: autonomic nervous contribution. J Dev Physiol 9:97–103
Bristow J, Rudolph AM, Itskovitz J, Barnes R (1983) Hepatic oxygen and glucose metabolism in the fetal lamb. J Clin Invest 71:1047–1061
Brumley GW, Chernick V, Hodson WA, Normand C, Fenner A, Avery ME (1967) Correlation of mechanical stability, morphology, pulmonary surfactant and phospholipid content in the developing lamb lung. J Clin Invest 46:863–873
Burri PH (1985) Development and growth of the human lung. In: Fishman AP, Fisher AB (eds) Handbook of physiology, vol 1, Sect 3. respiratory system, chap 1, American Pysiological Society, Bethesda, pp 1–46
Campbell AGM, Dawes GS, Fishan AP, Hyman AI (1967) Regional redistribution of blood flow in the mature fetal lamb. Circ Res 21:229–235
Carter AM (1989) Factors affecting gas transfer across the placenta and the oxygen supply to the fetus. J Dev Physiol 12:305–322
Carter AM, Gu W (1988) Cerebral blood flow in the fetal guinea-pig. J Dev Physiol 10:123–129
Cassin S, Dawes GS, Mott JC, Rss BB, Strang LB (1964) The vascular resistance of the foetal and newly ventilated lungs of the lamb. J Physiol (Lond) 171:61–79
Cassin S, Dawes GS, Ross BB (1964) Pulmonary blood flow and vascular resistance in immature foetal lambs. J Physiol (Lond) 171:80–89
Cassin S (1980) Role of prostaglandins and thromboxanes in the control of the pulmonary circulation in the fetus and newborn. Sem Perinatol 4:101–107
Cassin S, Tod M, Philips J, Frisinger S, Jordan J, Gibbs C (1981) Effects of prostacyclin on the fetal pulmonary circulation. Pediatr Pharmacol 1:197–207
Cassin S (1982) Humoral factors affecting pulmonary blood flow in the fetus and newborn infant. In: Peckhan GJ, Heymann MA (eds) Cardiovascular sequelae of asphyxia in the newborn. Report of the 83rd Ross conference on pediatric research. Ross Laboratories, Columbus, Ohio, pp 10–18
Chaillis JRG, Mitchell BF, Lye SJ (1984) Activation of fetal adrenal function. J Dev Physiol 6:93–105
Challis JRG, Richardson BS, Rurak D, Wlodek ME, Patrick JE (1986) Plasma adrenocorticotropic hormone and cortisol and adrenal blood flow during sustained hypoxemia in fetal sheep. Am J Obstet Gynecol 155:1332–1336
Challis JRG, Fraher L, Oosterhuis J, White SE, Bocking AD (1989) Fetal and maternal endocrine responses to prolonged reductions in uterine blood flow in pregnant sheep. Am J Obstet Gynecol 160:926–932
Chao CR, Hohimer AR, Bissonette JM (1989) Cerebral carbohydrate metabolism during severe ischemia in fetal sheep. J Cereb Blood Flow Metab 9:53–57
Charlton V, Johengen M (1985) Effects of intrauterine nutritional supplementation on fetal growth retardation. Biol Neonate 48:125–142
Charlton V, Johengen M (1987) Fetal intravenous nutritional supplementation ameliorates the development of embolization-induced growth retardation in sheep. Pediatr Res 22:55–61
Cheung CY, Brace RA (1988) Fetal hypoxia elevates plasma atrial natriuretic factor concentration. Am J Obstet Gynecol 159:1263–1268
Clapp JF III (1978) The relationship between blood flow and oxygen uptake in the uterine and umbilical circulation. Am J Obstet Gynecol 132:410–413
Clapp JF III, Peress NS, Wesley M, Mann LI (1988) Brain damage after intermittent partial cord occlusion in the chronically instrumented fetal lamb. Am J Obstet Gynecol 159:504–509
Clapp JF III, Szeto HH, Larrow R, Hewitt J, Mann LI (1981) Fetal metabolic response to experimental placental vascular damage. Am J Obstet Gynecol 140:446–451
Clapp JF III, Thabault NC, Hubel CA, McLaughlin MK, Auletta FJ (1982) Ovine placental cortisol production. Endocrinology 111:1728–1730
Clapp JF III (1988) Fetal endocrine and metabolic response to placental insufficiency. In: Künzel W, Jensen A (eds) The endocrine control of the fetus. Springer, Berlin Heidelberg New York, pp 246–253
Coceani F, Adeagbo ASO, Cutz E, Olley PM (1984) Autonomic mechanisms in the ductus venosus of the lamb. Am J Physiol 247:H17–24
Cohen WR, Piasecki GJ, Jackson BT (1982) Plasma catecholamines during hypoxemia in fetal lamb. Am J Physiol 243:R520–R525
Cohen WR, Piasecki GJ, Cohn HE, Young JB, Jackson BT (1984) Adrenal secretion of catecholamines during hypoxemia in fetal lambs. Endocrinology 114:383–390
Cohn HE, Sacks EJ, Heymann MA, Rudolph AM (1974) Cardiovascular responses to hypoxemia and acidemia in fetal lambs. Am J Obstet Gynecol 120:817–824
Cohn HE, Piasecki GJ, Jackson BT (1978) The role of autonomic nervous control in the fetal cardiovascular response to hypoxemia. In: Longo LD, Reneau DD (eds) Fetal and newborn cardiovascular physiology, vol 2. Garland, New York, pp 249–258
Cohn HE, Piasecki GJ, Jackson BT (1982) The effect of beta-adrenergic stimulation on fetal cardiovascular function during hypoxemia. Am J Obstet Gynecol 144:810–816
Cohn HE, Jackson BT, Piasecki G J, Cohen WR, Novy MJ (1985) Fetal cardiovascular responses to asphyxia induced by decreased uterine perfusion. J Dev Physiol 7:289–298
Colebatch HJH, Dawes GS, Goodwin JW, Nadeau RA (1965) The nervous control of the circulation in the foetal and newly expanded lungs of the lamb. J Physiol 178:544–562
Comline RS, Silver M (1961) The release of adrenaline and noradrenaline from the adrenal glands of the foetal sheep. J Physiol (Lond) 156:424–444
Court DJ, Parer JT, Block BSB, Llanos AJ (1984) Effects of beta-adrenergic blockade on blood flow distribution during hypoxaemia in fetal sheep. J Dev Physiol 6:349–358
Courtice GP, Kwong TE, Lumbers ER, Potter EK (1984) Excitation of the cardiac vagus by vasopressin in mammals. J Physiol (Lond) 354:547–556
Creasy RK, DeSwiet M, Kahanpaa KV, Young WP, Rudolph AM (1973) Pathophysiological changes in the foetal lamb with growth retardation. In: Comline RS, Cross KW, Dawes GS, Nathanielsz PW (eds) Foetal and neonatal physiology. Cambridge University Press, Cambridge, pp 398–402
Dagbjartsson A, Karlsson K, Kjellmer I, Rosén KG (1985) Maternal treatment with a cardioselective beta-blocking agent — consequences for the ovine fetus during intermittent asphyxia. J Dev Physiol 7:387–396
Dalton KJ, Dawes GS, Patrick JE (1977) Diurnal, respiratory, and other rhythms of fetal heart rate in lambs. Am J Obstet Gynecol 127:414–424
Daniel SS, Husain MK, Milliez J, Stark RI, Yeh MN, James LS (1978) Renal response of fetal lamb to complete occlusion of umbilical cord. Am J Obstet Gynecol 131:514–519
Dawes GS (1962) The umbilical circulation. Am J Obstet Gynecol 84:1634–1648
Dawes GS (1986) The rediscovery of fetal breathing and its consequences. In: Johnston BM, Gluckman PD (eds) Respiratory control and lung development in the fetus and newborn. Perinatology Press, Ithaca N Y, pp 209–222
Dawes GS, Mott JC, Widdicombe JG (1954) The foetal circulation in the lamb. J Physiol (Lond) 126:563–587
Dawes GS, Mott JC (1959) The increase in oxygen consumption of the fetal lamb after birth. J Physiol (Lond) 146:295–315
Dawes GS (1968) Foetal and neonatal physiolgy. Year Book Medical Publisher, Chicago
Dawes GS, Lewis BV, Milligan JE, Roach MR, Talner NS (1968) Vasomotor responses in the hind limbs of foetal and newborn lambs to asphyxia and aortic chemoreceptor stimulation. J Physiol (Lond) 195:516–538
Dawes GS, Fox HE, Leduc BM, Liggins GC, Richards RT (1972) Respiratory movements and rapid-eye-movement sleep in the foetal lamb. J Physiol (Lond) 220:119–143
Dawes GS (1973) Breathing and rapid-eye-movement sleep before birth. In: Foetal and neonatal physiology, proceedings of the Sir Joseph Barcroft centenary symposium. Cambridge University Press, Cambridge, pp 49–62
Dawes GS, Gardner WN, Johnston BM, Walker DW (1983) Breathing in fetal lambs: the effect of brain stem section. J Physiol (Lond) 335:535–553
De Lemos RA (1970) Acceleration of appearance of pulmonary surfactant in the fetal lamb by administrtion of corticosteroids. Am Rev Respir Dis 102:459–461
De Vries JIP, Visser GHA, Huisjes JH, Prechtl HFR (1982). The emergence of fetal behaviour. In: Neurobiology of development: EBBS workshop. University of Groningen Press, Groningem, pp 45–46
Drummond WH, Rudolph AM, Keil LC, Gluckman PD, MacDonald AA, Heymann MA (1980) Arginine vasopressin and prolactin after hemorrhage in the fetal lamb. Am J Physiol 238:E214–E219
Edelstone DI, Rudolph AM, Heymann MA (1978) Liver and ductus venosus blood flows in fetal lambs in utero. Cire Res 42:426–433
Edelstone DI, Rudolph AM, Heymann MA (1980) Effects of hypoxaemia and decreasing umbilical flow on liver and ductus venosus blood flows in fetal lambs. Am J Physiol 238:H656–H663
Edelstone DI Holzman IR (1982) Fetal intestinal oxygen consumption at various levels of oxygenation. Am J Physiol 242:H50–H54
Edelstone DI, Holzman IR (1984) Regulation of perinatal intestinal oxygenation. Semin Perinatal 8:226–233
Elliot JM, West MJ, Chalmers J (1985) Effects of vasopressin on heart rate in conscious rabbits. J Cardiovasc Pharmacol 7:6–11
Emmanoulides GC, Townsend DE, Bauer RA (1986) Effects of single umbilical artery ligation in the lamb. Pediatrics 42:919–927
Emson PC, De Quidt ME (1984) NPY — a new member of the pancreatic polypeptide family. Trends Neurosci 7:31–35
Fillenz M (1966) Innervation of the cat spleen. J Physiol (Lond) 185:2–3
Fisher DJ, Heymann MA, Rudolph AM (1982) Fetal myocardial oxygen and carbohydrate consumption during acutely induced hypoxemia. Am J Physiol 242:H657—H661
Fisher DJ, Heymann MA, Rudolph AM (1982) Fetal myocardial oxygen and carbohydrate metabolism in sustained hypoxemia in utero. Am J Physiol 243:H959—H963
Fisher DJ (1986) Acidemia reduces cardiac output and left ventricular contractility in conscious lambs. J Dev Physiol 8:23–31
Friedman WF (1973) The intrinsic physiologic properties of the developing heart. In: Friedman WF, Lesch M, Sonnenblick EH (eds) Neonatal heart disease. Grune and Stratton, New York, pp 21–49
Gilbert RD, Cummings LA, Juchau MR, Longo LD (1979) Placental diffusing capacity and fetal development in exercising or hypoxic guinea pigs. J Appl Physiol 46:828–834
Gilbert RD (1980) Control of fetal cardiac output during changes in blood volume. Am J Physiol 238:H80–H86
Gilbert RD (1982) Effects of afterload and baroreceptors on cardiac function in fetal sheep. J Dev Physiol 4:299–309
Gleason CA, Rudolph AM (1985) Gluconeogenesis by the fetal sheep liver in vivo. J Dev Physiol 7:185–195
Gleason CA, Rudolph AM (1986) Oxygenation does not stimulate hepatic gluconeogenesis in fetal lamb. Pediatr Res 20:532–535
Gu W, Jones CT, Parer JT (1985) Metabolic and cardiovascular effects on fetal sheep of sustained reduction of uterine blood flow. J Physiol (Lond) 368:109–129
Guissani DA, Spencer JAD, Moore PJ, Hanson MA (1990) The effect of carotid sinus nerve section on the initial cardiovascular response to acute isocapnic hypoxia in fetal sheep in utero. J Physiol (Lond) 432:33P
Guissani DA, Spencer JAD, Moore PJ, Hanson MA (1991) Effect of phentolamine on initial cardiovascular response to isocapnic hypoxia in intact and carotid sinus denervated fetal sheep. J Physiol (Lond) 438:56P
Hanson MA (1988) The importance of baro- and chemo-reflexes in the control of the fetal cardiovascular system. J Dev Physiol 10:491–511
Hanson MA (1993) The control of heart rate and blood pressure in the fetus: theoretical considerations. In: Hanson MA, Spencer JAD, Rodeck CH (eds) Fetus and neonate, vol 1: the circulation. Cambridge University Press, Cambridge, pp 1–22
Harding R, Poore ER, Cohen GL (1981) The effect of brief episodes of diminished uterine blood flow on breathing movements, sleep states and heart rate in fetal sheep. J Dev Physiol 3:231–243
Harris JL, Krüger TR, Parer JT (1982) Mechanisms of late decelerations of the fetal heart rate during hypoxia. Am J Obstet Gynecol 144:491–496
Heymann MA (1984) Control of the pulmonary circulation in the perinatal period. J Dev Physiol 6:281–290
Heymann MA (1988) Control of the pulmonary circulation in the perinatal period. In: Künzel W, Jensen A (eds) The endocrine control of the fetus. Springer, Berlin Heidelberg New York, pp 31–37
Hislop A, Reid L (1972) Intra-pulmonary arterial development during fetal life-branching pattern and structure. J Anat 113:35–48
Hökegard KH, Karlsson K, Kjellmer I, Rosén KG (1979) ECG-changes in the fetal lamb during asphyxia in relation to beta-adrenoceptor stimulation and blockade. Acta Physiol Scand 105:195–203
Hoerter J, Mazet F, Vassort G (1982) Perinatal growth of the rabbit cardiac cell: possible implications for the mechanism of relaxation. J Mol Cell Cardiol 13:725–740
Humphreys PW, Strang LB (1967) Effects of gestation and prenatal asphyxia on pulmonary surface properties of the foetal rabbit. J Physiol (Lond) 192:53–62
Itskovitz J, Goetzman BW, Rudolph AM (1982) The mechanism of late deceleration of the heart rate and its relationship to oxygenation in normoxemic and chronically hypoxemic fetal lambs. Am J Obstet Gynecol 142:66–73
Itskovitz J, Goetzman BW, Rudolph AM (1982) Effects of hemorrhage on umbilical venous return and oxygen delivery in fetal lambs. Am J Physiol 242:H543–H548
Itskovitz J, LaGamma EF, Rudolph AM (1983) Heart rate and blood pressure responses to umbilical cord compression in fetal lambs with special reference to the mechanism of variable deceleration. Am J Obstet Gynecol 147:451–457
Itskovitz J, LaGamma EF, Rudolph AM (1983) The effect of reducing umbilical blood flow on fetal oxygenation. Am J Obstet Gynecol 145:813–818
Itskovitz J, LaGamma EF, Rudolph AM (1987) Effects of cord compression on fetal blood flow distribution and O2 delivery. Am J Physiol 252:H100–H109
Iwamoto HS (1989) Cardiovascular responses to reduced oxygen delivery: studies in fetal sheep at 0.55–0.7 gestation. In: Gluckman PD, Johnston BM, Nathanielsz PW (eds) Advances in fetal physiology: reviews in honor of GC Liggins. Perinatology Press, Ithaca, New York, pp 43–54
Iwamoto HS, Kaufman T, Keil LC, Rudolph AM (1989) Responses to acute hypoxemia in the fetal sheep at 0.6–0.7 gestation. Am J Physiol 256:H613–H620
Iwamoto HS, Rudolph AM, Keil LC, Heymann MA (1979) Hemodynamic responses of the sheep fetus to vasopressin infusion. Circ Res 44:430–436
Iwamoto HS, Rudolph AM (1981) Role of renin-angiotensin system in response to hemorrhage in fetal sheep. Am J Physiol 240:H848–H854
Iwamoto HS, Rudolph AM, Mirkin BL, Keil LC (1983) Circulatory and humoral responses of sympathectomized fetal sheep to hypoxemia. Am J Physiol 245:H767–H772
Iwamoto HS, Rudolph AM (1985) Metabolic responses of the kidney in fetal sheep: effect of acute and spontaneous hypoxemia. Am J Physiol 249:F836–F841
Jacobs H, Jobe A, Ikegami M, Glatz T, Jones S J, Barajas L (1982) Premature lambs rescued from respiratory failure with natural surfactant: clinical and biophysical correlates. Pediatr Res 16:424–429
Jacobs R, Robinson JS, Owens JA, Falconer J, Webster MED (1988) The effect of prolonged hypobaric hypoxia on growth of fetal sheep. J Dev Physiol 10:97–112
Jelinek J, Jensen A (1991) Catecholamine concentrations in plasma and organs of the fetal guinea pig during normoxaemia, hypoxaemia and asphyxia. J Dev Physiol 15:145–152
Jensen A (1989) Die Zentralisation des fetalen Kreislaufs. Thieme, Stuttgart
Jensen A (1992) The role of the sympathetic nervous system in preventing perinatal brain damage. In: Künzel W (ed) Oxygen, basis of the regulation of vital functions in the fetus. Springer, Berlin Heidelberg New York, pp 77–107
Jensen A, Hanson MA (1995) Circulatory responses to acute asphyxia in intact and chemodenervated fetal sheep near term. Reprod Fertil Dev (in press)
Jensen A, Künzel W (1980) The difference between fetal transcutaneous PO2 and arterial PO2 during labour. Gynecol Obstet Invest 11:249–264
Jensen A, Künzel W, Kastendieck E (1985) Repetitive reduction of uterine blood flow and its influence on fetal transcutaneous PO2 and cardiovascular variables. J Dev Physiol 7:75–87
Jensen A, Bamford OS, Dawes GS, Hofmeyr G, Parkes MJ (1986) Changes in organ blood flow between high and low voltage electrocortical activity in fetal sheep. J Dev Physiol 8:187–194
Jensen A, Hohmann M, Künzel W (1987) Redistribution of fetal circulation during repeated asphyxia in sheep: effects on skin blood flow, transcutaneous PO2, and plasma catecholamines. J Dev Physiol 9:41–55
Jensen A, Künzel W, Hohmann M (1985) Dynamics of fetal organ blood flow redistribution and catecholamine release during acute asphyxia. In: Jones CT, Nathanielsz PW (eds) The physiological development of the fetus and newborn. Academic, London, pp 405–410
Jensen A, Künzel W, Kastendieck E (1987) Fetal sympathetic activity, transcutaneous PO2, and skin blood flow during repeated asphyxia in sheep. J Dev Physiol 9:337–346
Jensen A, Hohmann M, Künzel W (1987) Dynamic changes in organ blood flow and oxygen consumption during acute asphyxia in fetal sheep. J Dev Physiol 9:543–559
Jensen A, Gips H, Hohmann M, Künzel W (1988) Adrenal endocrine and circulatory responses to acute prolonged asphyxia in surviving and non-surviving fetal sheep near term. In: Künzel W, Jensen A (eds) The endocrine control of the fetus. Springer, Berlin Heidelberg New York, pp 64–79
Jensen A, Lang U (1988) Dynamics of circulatory centralization and release of vasoactive hormones during acute asphyxia in intact and chemically sympathectomized fetal sheep. In: Künzel W, Jensen A (eds) The endocrine control of the fetus. Springer, Berlin Heidelberg New York, pp 135–149
Jensen A, Lang U, Künzel W (1987) Microvascular dynamics during acute asphyxia in chronically prepared fetal sheep near term. Adv Exp Med Biol 220:127–131
Jensen A, Roman C, Rudolph AM (1991) Effects of reducing uterine blood flow on fetal blood flow distribution and oxygen delivery. J Dev Physiol 15:309–323
Jogee M, Myatt L, Elder MG (1983) Decreased prostacyclin production by placental cells in culture from pregnancies complicated by fetal growth retardation. Br J Obstet Gynaecol 90:247–250
Johnson GN, Palahniuk RJ, Tweed WA, Jones MV, Wade JG (1979) Regional cerebral blood flow changes during severe fetal asphyxia produced by slow partial umbilical cord compression. Am J Obstet Gynecol 135:48–52
Jones CT, Robinson RO (1975) Plasma catecholamines in foetal and adult sheep. J Physiol (Lond) 285:395–408
Jones CT (1977) The development of some metabolic responses to hypoxia in foetal sheep. J Physiol (Lond) 266:743–762
Jones CT, Boddy K, Robinson JS, Ratcliffe JG (1977) Developmental changes in the responses of the adrenal glands of the foetal sheep to endogenous adrenocorticotrophin as indicated by hormone responses to hypoxaemia. J Endocrinol 72:279–292
Jones CT (1980) Circulating catecholamines in the fetus, their origin, actions and significance. In: Parves H, Parves S (eds) Biogenic amines in development. Elsevier North-Holland, Amsterdam, pp 63–86
Jones CT, Ritchie JWK (1983) The effects of adrenergic blockade on fetal response to hypoxia. J Dev Physiol 5:211–222
Jones CT, Robinson JS (1983) Studies on experimental growth retardation in sheep. Plasma catecholamines in fetuses with small placenta. J Dev Physiol 5:77–87
Jones CT (1985) Reprogramming of metabolic development by restriction of fetal growth. Biochem Soc Trans 13:89–91
Jones CT, Rose JC, Kelly RT, Hardgrave BY (1985) Catecholamine responses in fetal lambs subjected to hemorrhage. Am J Obstet Gynecol 151:475–478
Jones CT, Lafeber HN, Price DA, Parer JT (1987) Studies on the growth of the fetal guinea pig. Effects of reduction in uterine blood flow on the plasma sulphation-promoting activity and on the concentration of insuli-like growth factors-I and -II. J Dev Physiol 9:181–201
Jones CT, Roebuck MM, Walker DW, Johnston BM (1988) The role of the adrenal medulla and peripheral sympathetic nerves in the physiological responses of the fetal sheep to hypoxia. J Dev Physiol 10:17–36
Jones CT, Gu W, Harding JE, Price DA, Parer JT (1988) Studies on the growth of the fetal sheep. Effects of surgical reduction in placental size, or experimental manipulation of uterine blood flow on plasma sulphation promoting activity and on the concentration of insulin-like growth factors I and II. J Dev Physiol 10:179–189
Jones MD, Sheldon RE, Peeters LL, Meschia G, Battaglia FC, Makowski EL (1977) Fetal cerebral oxygen consumption at different levels of oxygenation. J Appl Physiol 43:1080–1084
Kelly RT, Rose JC, Meiss PJ, Hargrave BY, Morris M (1983) Vasopressin is important for restoring cardiovascular homeostasis in fetal lambs subjected to hemorrhage. Am J Obstet Gynecol 146:807–812
Kikkawa Y, Kaibara M, Motoyama EK, Orzalesi MM, Cook CD (1971) Morphologic development of rabbit lung and its acceleration with cortisol. Am J Pathol 64:423–442
Kitanaka T, Alonso JG, Gilbert RD, Siu BL, Clemons GK, Longo LD (1989) Fetal responses to long-term hypoxemia in sheep. Am J Physiol 245:R1348–1354
Kitterman JA, Liggins GC, Campos GA, Clements JA, Forster CS, Lee CH, Creasy RK (1981) Prepartum maturation of the lung in fetal sheep: relation to cortisol. J Appl Physiol 51:384–390
Koos BJ, Kitanaka T, Matsuda K, Gilbert RD, Longo LD (1988) Fetal breathing adaption to prolonged hypoxaemia in sheep. J Dev Physiol 10:161–166
Kotas RV, Avery ME (1971) Accelerated appearance of pulmonary surfactant in the fetal rabbit. J Appl Physiol 30:358–361
Kotas RV, Farrel PM, Ulane RE, Chez RA (1977) Fetal rhesus monkey lung development: lobar differences and discordances between stability and Distensibility. J Appl Physiol 43:92–98
Kotas RV, Fletcher BD, Torday JS, Avery ME (1971) Evidence of independent regulators of organ maturation in fetal rabbits. Pediatrics 47:57–64
Künzel W, Kastendieck E, Böhme U, Feige A (1975) Uterine hemodynamics and fetal response to vena caval occlusion in sheep. J Perinat Med 3:260–268
Künzel W, Mann LI, Bhakthavathsalan A, Airomlooi J, Liu M (1977) The effect of umbilical vein occlusion on fetal oxygenation, cardiovascular parameters, and fetal electroencephalogram. Am J Obstet Gynecol 128:201–208
Künzel W, Moll W (1972) Uterine O2 consumption and blood flow of the pregnant uterus. Z Geburtsh Perinatol 176:108–117
Künzel W, Kastendieck E, Hohmann M (1983) Heart rate and blood pressure and metabolic changes in the sheep fetus following reduction of uterine blood flow. Gynecol Obstet Invest 15:300–317
Lafeber H, Jones CT, Rolph T (1979) Some of the consequences in the intra-uterine growth retardation. In: Visser HKA (ed) Nutrition and growth of the fetus. Nijhoff, the Hague, pp 43–62
Lafeber HN, Rolph TP, Jones CT (1984) Studies on the growth of the fetal guinea pig. The effects of ligation of the uterine artery on organ growth and development. J Dev Physiol 6:441–459
LaGamma EF, Itskovitz J, Rudolph AM (1982) Effects of naloxone on fetal circulatory responses to hypoxemia. Am J Obstet Gynecol 143:933–940
Leffler CW, Tyler TL, Cassin S (1978) Effect of indomethacin on pulmonary vascular response to ventilation of fetal goats. Am J Physiol 234:H346–H351
Leffler CW, Hessler JR (1979) Pulmonary and systemic vascular effects of exogenous prostaglandin I in fetal lambs. Eur J Pharmacol 54:37–42
Levin DL, Rudolph AM, Heymann MA, Phibbs RH (1976) Morphological development of the pulmonary vascular bed in fetal lambs. Circulation 53:144–151
Lewis AB, Heymann MA, Rudolph AM (1976) Gestational changes in pulmonary vascular responses in fetal lambs in utero. Cire Res 39:536–541
Lewis AB, Wolf WJ, Sischo W (1984) Fetal cardiovascular and catecholamine responses to hypoxemia after chemical sympathectomy. Pediatr Res 18:318–322
Lewis AB, Wolf WJ, Sischo W (1984) Cardiovascular and catecholamine responses to successive episodes of hypoxemia in the fetus. Biol Neonate 45:105–111
Lewis AB, Sischo W (1985) Cardiovascular and catecholamine responses to hypoxemia in chemically sympathectomized fetal lambs. Dev Pharmacol Ther 8:129–140
Lewis PJ, Moncada S, O’Grady J (eds) (1983) Prostacyclin in pregnancy. Raven, New York
Liggins GC, Schellenberg JC (1988) Endocrine control of lung development. In: Künzel W, Jensen A (eds) The endocrine control of the fetus. Springer, Berlin Heidelberg New York, pp 236–245
Llanos AJ, Green JR, Creasy RK, Rudolph AM (1980) Increased heart rate response to parasympathetic and beta adrenergic blockade in growth retarded fetal lambs. Am J Obst Gynecol 136:808–813
Llanos AJ, Court D, Holbrook H, Block BS, Vega R, Parer JT (1983) Cardiovascular effects of naloxone (NLX) during asphyxia in fetal sheep. 30th annual meeting, Society for Gynecological Investigation, Washington DC, p300
Lotgering FK, Wallenburg HCS (1986) Hemodynamic effects of caval and uterine venous occlusion in pregnant sheep. Am J Obstet Gynecol 155:1164–1170
Lou HC, Lassen NA, Tweed WA, Johnson G, Jones M, Palahniuk RJ (1979) Pressure passive cerebral blood flow and breakdown of the blood-brain barrier in experimental asphyxia. Acta Paediatr Scand 68:57–63
MacDonald AA, Rose JC, Heymann MA, Rudolph AM (1980) Heart rate response of fetal and adult sheep to hemorrhage stress. Am J Physiol 239:H780–H793
Makowski EL, Schneider JM, Tsoulos NG, Colwill JR, Battaglia FC, Meschia G (1972) Cerebral blood flow, oxygen consumption and glucose utilization of fetal lambs in utero. Am J Obstet Gynecol 114:292–303
Maloney JE, Adamson TM, Brodecky V, Dowling MH, Ritchie BC (1975) Modification of respirtory centre output in the unanesthetized fetal sheep “in utero”. J Appl Physiol 39:552–558
Mann LI, Prichard JW, Symmes D (1970) EEG, ECG, and acid-base observations during acute fetal hypoxia. Am J Obstet Gynecol 106:39–51
Martin CB (1985) Pharmacological aspects of fetal heart rate regulation during hypoxia. In: Künzel W (ed) Fetal heart rate monitoring. Springer, Berlin Heidelberg New York, pp 170–184
Martin CB, Murata Y, Petrie RH, Paret JT (1974) Respiratory movements in fetal rhesus monkeys. Am J Obstet Gynecol 119:939–948
Martin CB, Voersmans TMG, Jongsma HW (1987) Effect of reducing uteroplacental blood flow on movements and on electrocortical activity of fetal sheep. Gynecol Obstet Invest 23:34–39
Martin AA, Kapoor R, Scroop GC (1987b) Hormonal factors in the control of heart rate in normoxaemic and hypoxaemic fetal, neonatal and adult sheep. J Dev Physiol 9:465–480
Maylie JG (1982) Excitation-contraction coupling in neonatal and adult myocardium of cat. Am J Physiol 242:H834–843
Mellor D (1983) Nutritional and placental determinants of foetal growth rate in sheep and consequences for the newborn lamb. Br Vet J 139:307–324
Meschia G, Cotter JR, Breathnack CS, Barron DH (1965) The hemoglobin, oxygen, carbon dioxide concentrations in the umbilical bloods of sheep and goats sampled via indwelling plastic catheters. Q J Exp Physiol 26:185–195
Mitchell MD, Bibby JG, Hicks BR (1978) Possible role for prostacyclin in human parturition. Prostagladins 16:931–937
Moore KL (1988) The developing human: clinically oriented embryology, 4th edn. Saunders, Philadelphia
Mott JC, Walker DW (1983) Neural and endocrine regulation of circulation in the fetus and newborn. In: Shepherd JP, Abboud FM (eds) Handbook of physiology: the cardiovascular system III: peripheral circulation and organ blood flow, part 2. American Physiological Society, Bethesda, pp 837–883
Myers RE (1979) Lactic acid accumulation as cause of brain edema and cerebral necrosis resulting from oxygen deprivation. In: Korobkin R, Guilleminault C (eds) Advances in perinatal neurology. Spectrum, New York, pp 85–114
Myers RE (1977) Experimental models of perinatal brain damage: relevance to human pathology. In: Gluck L (ed) Intrauterine asphyxia and the developing fetal brain. Year Book Publishers, New York, pp 37–97
Nathanielz PW, Bailey A, Poore ER, Thorburn GD, Harding R (1980) The relationship between myometrial activity and sleep state and breathing in fetal sheep throughout the last third of gestation. Am J Obstet Gynecol 138:653–659
Owens JA, Falconer J, Robinson JS (1987) Effect of restriction of placental growth on oxygen delivery to and consumption by the pregnant uterus and fetus. J Dev Physiol 9:137–150
Owens JA, Falconer J, Robinson JS (1987) Effect of restriction of placental growth on fetal and utero-placental metabolism. J Dev Physiol 9:225–238
Papile LA, Rudolph AM, Heymann MA (1985) Auto-regulation of cerebral blood flow in the preterm fetal lamb. Pediatr Res 19(2):159–161
Parer JT, De Lannoy CW, Hoversland AS, Metcalfe J (1968) Effect of decreased uterine blood flow on uterine oxygen consumption in pregnant macaques. Am J Obstet Gynecol 100:813–820
Parer JT, Krueger TR, Harris JL, Reuss L (1978) Autonomic influences on umbilical circulation during hypoxia in fetal sheep. Abstracts of scientific papers. Quilligan Symposium, San Diego
Parer JT (1980) The effect of acute maternal hypoxia on fetal oxygenation and the umbilical circulation in the sheep. Eur J Obstet Gynecol Reprod Biol 10:125–136
Parer JT (1983) The influence of beta-adrenergic activity on fetal heart rate and the umbilical circulation during hypoxia in fetal sheep. Am J Obstet Gynecol 147:592–597
Parisi VM, Walsh SW (1989) Fetoplacental vascular responses to prostacyclin after thromboxane-induced vasoconstriction. Am J Obstet Gynecol 160:502–507
Paulick RP, Meyers RL, Rudolph CD, Rudolph AM (1990) Venous and hepatic vascular responses to indomethacin and prostaglandin E1in the fetal lamb. Am J Obstet Gynecol 163:1357–1363
Paulick RP, Kastendieck E, Wernze H (1985) Catecholamines in arterial and venous umbilical blood: placental extraction, correlation with fetal hypoxia, and transcutaneous partial pressure. J Perinat Med 13:31–42
Peeters LLH, Sheldon RE, Jones MD Jr, Makowski EL, Meschia G (1979) Blood flow to fetal organs as a function of arterial oxygen content. Am J Obstet Gynecol 135:637–646
Purves MJ, James IM (1969) Observations on the control of cerebral blood flow in the sheep fetus and newborn lamb. Circ Res 25:651–667
Rankin JHG, Meschia G, Makowski EL, Battaglia FC (1971) Relationship between uterine and umbilical venous PO2 in sheep. Am J Physiol 220:1688–1692
Reid LM (1979) The pulmonary circulation: remodelling in growth and disease. Am Rev Respir Dis 119:531–546
Reid LM (1982) The development of the pulmonary circulation. In: Peckham GJ, Heymann MA (eds) Cardiovascular sequelae of asphyxia in the newborn. Report of the 83rd Ross conference on pediatric research. Ross Laboratories, Columbus, Ohio, pp 2–10
Reid DL, Jensen A, Phernetton TM, Rankin JHG (1990) Relationship between plasma catecholamine levels and electrocortical state in the mature fetal lamb. J Dev Physiol 13:75–79
Reller MD, Morton MJ, Thornburg KL (1986) Right ventricular function in the hypoxaemic fetal sheep. J Dev Physiol 8:159–166
Reller MD, Morton MJ, Giraud GD, Reid DL, Thornburg KL (1989) The effect of acute hypoxaemia on ventricular function during beta-adrenergic and cholinergic blockade in the fetal sheep. J Dev Physiol 11:263–269
Reuss ML, Rudolph AM (1980) Distribution and recirculation of umbilical and systemic venous blood flow in fetal lambs during hypoxia. J Dev Physiol 2:71–84
Reuss ML, Parer JT, Harris JL, Krueger TR (1982) Hemodynamic effects of alpha-adrenergic blockade during hypoxia in fetal sheep. Am J Obstet Gynecol 142:410–415
Richardson BS, Hohimer AR, Bissonette JM, Machida CM (1983) Cerebral metabolism in hypoglycemic and hyperglycemic fetal lambs. Am J Physiol 245:R730–R736
Richardson BS, Rurak D, Patrick JE, Homan J, Carmichael L (1989) Cerebral oxidative metabolism during sustained hypoxemia in fetal sheep. J Dev Physiol 11:37–43
Robbilard JE, Weitzman RE, Fisher DA, Smith FG Jr (1979) The dynamics of vasopressin release and blood volume regulation during fetal hemorrhage in the lamb fetus. Pediatr Res 13:606–610
Robbilard JE, Weitzman RE, Burmeister L, Smith FG Jr (1981) Developmental aspects of the renal response to hypoxaemia in the lamb fetus. Circ Res 48:128–138
Robbilard JE, Gomez RA, Meernik JG, Kuehl WD, Van Orden D (1982) Role of angiotensin II on the adrenal and vascular responses to hemorrhage during development in fetal lambs. Circ Res 50:645–650
Robillard JE, Ayres NA, Gomez RA, Nakamura KT, Smith JR, FG (1984) Factors controlling aldosterone secretion during hypoxemia in fetal lambs. Pediatr Res 18:607–611
Robinson JS, Kingston EJ, Jones CT, Thornburn GD (1979) Studies on experimental growth retardation in sheep. The effect of removal of endometrial caruncles on fetal size and metabolism. J Dev Physiol 1:379–398
Robinson JS, Jones CT, Kingston EJ (1983) Studies on experimental growth retardation in sheep. The effects of maternal hypoxaemia. J Dev Physiol 5:89–100
Robinson JS, Falconer J, Owens JA (1985) Intrauterine growth retardation: clinical and experimental. Acta Paediatr Scand [Suppl] 319:135–142
Rose JC, Morris M, Meis PJ (1981) Hemorrhage in newborn lambs: effects on arterial blood pressure, ACTH, cortisol, and vasopressin. Am J Physiol 240:E585–E590
Rosén KG, Isaksson O (1976) Alteration in fetal heart rate and ECG correlated to glycogen, creatinephosphate and ATP levels during graded hypoxia. Biol Neonate 30:17–24
Rosenthal M, Lamanna JC, Jöbsis FF, Levasseur JE, Kontos HA, Patterson JL (1976) Effects of respiratory gases on cytochrome a in intact cerebral cortex: is there a critical PO2? Brain Res 108:143–153
Rudolph AM, Heymann MA (1967) Circulation of the fetus in utero: methods for studying distribution of blood flow, cardiac output and organ blood flow. Circ Res 21:163–184
Rudolph AM, Heymann MA (1970) Circulatory changes during growth in the fetal lamb. Circ Res 26:289–299
Rudolph AM, Heymann MA (1973) Control of the fetal circulation. In: Proceedings of the Sir Joseph Barcroft Centenary Symposium: foetal and neonatal physiology. Cambridge University Press, Cambridge, pp 89–111
Rudolph AM, Heymann MA (1976) Cardiac output in the fetal lamb: the effects of spontaneous und induced changes of heart rate on right and left ventricular output. Am J Obstet Gynecol 124:183–192
Rudolph AM (1979) Fetal and neonatal pulmonary circulation. Annu Rev Physiol 41:383–395
Rudolph AM, Heymann MA, Lewis AB (1977) Physiology and pharmacology of the pulmonary circulation in the fetus and newborn. In: Hodson WA (ed) Lung biology in health and disease. Development of the lung. Dekker, New York, pp 497–523
Rudolph AM, Itskovitz J, Iwamoto H, Reuss L, Heymann MA (1981) Fetal cardiovascular responses to stress. Semin Perinatol 5:109–121
Rudolph AM (1983) Hepatic and ductus venosus blood flows during fetal life. Hepatology 3:254
Rudolph AM (1984) The fetal circulation and its response to stress. J Dev Physiol 6:11–19
Rudolph AM (1985) Distribution and regulation of blood flow in the fetal and neonatal lamb. Circ Res 57:811–821
Rudolph CD, Roman C, Rudolph AM (1989) Effect of acute umbilical cord compression on hepatic carbohydreate metabolism in the fetal lamb. Pediatr Res 25(3):228–233
Rurak DW (1978) Plasma vasopressin levels during hypoxaemia and the cardiovascular effects of exogenous vasopressin in foetal and adult sheep. J Physiol (Lond) 277:341–357
Schellenberg J-C (1986) The development of connective tissue and its role in pulmonary mechanics. In: Johnston BM, Gluckman PD (eds) Respiratory control and lung development in the fetus and newborn. Perinatology Press, Ithaca, pp 3–62
Schulze BS (1871) Der Scheintod Neugeborener. Letter to Dr C Ludwig, Mauke’s Verlag (Hermann Dufft), Jena
Scroop GC, Marker JD, Stankewytsch-Janusch B, Seamark RF (1986) Angiotensin I and II and the assessment of baroreceptor function in fetal and neonatal sheep. J Dev Physiol 8:123–137
Shelley H (1960) Blood sugars and tissue carbohydrate in foetal and infant lambs and rhesus monkeys. J Physiol (Lond) 153:527–552
Siesjö BK (1978) Brain energy metabolism. Wiley, Chichester
Siesjö BK, Bengtsson F (1988) Calcium, calcium antagonists, and ischemic cell death in the brain. In: Krieglstein J (ed) Pharmacology of cerebral ischemia. Wissenschaftliche Verlagsgesellschaft, Stuttgart, pp 23–29
Skillman CA, Plessinger MA, Woods JR, Clark KE (1985) Effect of graded reductions in uteroplacental blood flow on the fetal lamb. Am J Physiol 249:H1098–H1105
Skillman CA, Clark KE (1987) Fetal beta-endorphin levels in response to reductions in uterine blood flow. Biol Neonate 51:217–223
Smith RW, Morris JA, Assali NS (1964) Effects of chemical mediators on the pulmonary and ductus arteriosus circulation in the fetal lamb. Am J Obstet Gynecol 89:252–260
Stark RI, Wardlaw SL, Daniel SS, Husain MK, Sanocka UM, James LS, Vande Wiele RL (1982) Vasopressin secretion induced by hypoxia in sheep: developmental changes and relationship to beta-endorphin release. Am J Obstet Gynecol 143:204–215
Stark RI, Daniel SS, Husain MK, Sanocka UM, Zubrow AB, James LS (1984) Vasopressin concentration in the amniotic fluid as an index of fetal hypoxia: mechanism of release in sheep. Pediatr Res 18:552–558
Stein GW (1783) Theoretische Anleitung zur Geburtshülfe. Johann Jacob Cramer, Cassel
Taeusch HW Jr, Wyzogrodski I, Wang NS, Avery ME (1974) Pulmonary pressure-volume relationships in premature fetal and newborn rabbits. J Appl Physiol 37:809–813
Thornburg KL, Morton MJ (1983) Filling and arterial pressures as determinants of RV stroke volume in the sheep fetus. Am J Physiol 244:H656–H663
Toubas PL, Silverman NH, Heymann MA, Rudolph AM (1981) Cardiovascular effects of acute hemorrhage in fetal lambs. Am J Physiol 240:H45–H48
Towell ME, Figueroa J, Markovitz S, Elias B, Nathanielsz P (1987) The effect of mild hypoxemia maintained for twenty-four hours on maternal and fetal glucose, lactate, cortisol, and arginine vasopressin in pregnant sheep at 122 to 139 days’ gestation. Am J Obstet Gynecol 157:1550–1557
Trudinger BJ, Stevens D, Connelly A, Hales JRS, Alexander G, Bradley L, Fawcett A, Thompson RS (1987) Umbilical artery flow velocity waveforms and placental resistance: the effects of embolization of the umbilical circulation. Am J Obstet Gynecol 157:1443–1448
Tweed WA, Cote J, Pash M, Lou H (1983) Arterial oxygenation determines autoregulation of cerebral blood flow in the fetal lamb. Pediatr Res 17:246–249
Tyler TL, Leffler CW, Cassin S (1977) Effects of prostaglandin precursors, prostaglandins, and prostaglandin metabolites on pulmonary circulation of perinatal goats. Chest 71S:271S–273S
Von Ahlfeld F (1888) Über bisher noch nicht beschriebene intrauterine Bewegungen des Kindes. Breitkopf und Hartel, Leipzig, pp 203–210 (Verhandlungen der Deutschen Gesellschaft für Gynäkologie)
Von Ahlfeld F (1905) Die intrauterine Fähigkeit der Thorax-und Zwerchfellmuskulatur. Intrauterine Atmung. Monatsschr Geburtsh Gynakol 21:143–169
Wagner KR, Ting P, Westfall MV, Yamaguchi S, Bacher JD, Myers RE (1986) Brain metabolic correlates of hypoxia-ischemic cerebral necrosis in mid-gestational sheep fetuses: significance of hypotension. J Cereb Blood Flow Metab 6:425–434
Walker AM, Cannata JP, Dowling MH, Ritchie BC, Maloney JE (1978) Sympathetic and parasympathetic control of heart rate in unanesthetized fetal and newborn lambs. Biol Neonate 33:135–143
Walker AM, Cannata JP, Dowling MH, Ritchie BC, Maloney JE (1979) Age-dependent pattern of autonomic heart rate control during hypoxia in fetal and newborn lambs. Biol Neonate 35:198–208
Walker AM, de Preu ND, Horne RSC, Berger PJ (1990) Anatomic control of heart rate differs with electrocortical activity and chronic hypoxaemia in fetal lambs. Biol Neonate 14:43–48
Wardlaw SL, Stark RI, Daniels S, Frantz AG (1981) Effects of hypoxia on beta-endorphin and beta-lipotropin release in fetal, newborn and maternal sheep. Endocrinology 108:1710–1715
Weismann DN, Robillard JE (1988) Renal hemodynamic responses to hypoxemia during development: relationships to circulating vasoactive substances. Pediatr Res 23:155–162
Wigglesworth JS (1964) Experimental growth retardation in the foetal rat. J Pathol Bacteriol 88:1–13
Wilkening RB, Anderson S, Martensson L, Meschia G (1982) Placental transfer as a function of uterine blood flow. Am J Physiol 242:H429–H436
Wilkening RB, Meschia G (1983) Fetal oxygen uptake, oxygenation, and acid-base balance as a function of uterine blood flow. Am J Physiol 244:H749–H755
Wilson DF, Owen ChS, Erecinska M (1979) Quantitative dependence of mitochondrial oxidative phosphorylation on oxygen concentration: a mathematical model. Arch Biochem Biophys 195:494–504
Wlodek ME, Challis JRG, Richardson B, Patrick J (1989) The effects of hypoxaemia with progressive acidaemia on fetal renal function in sheep. J Dev Physiol 12:323–328
Yaffe H, Parer JT, Block BS, Llanos AJ (1987) Cardiorespiratory responses to graded reductions of uterine blood flow in the sheep fetus. J Dev Physiol 9:325–336
Zink J, Van Petten GR (1980) The effects of norepinephrine on blood flow through the fetal liver and ductus venosus. Am J Obstet Gynecol 137:71–77
Zweifel P (1876) Die Respiration des Fötus. Arch Gynakol 9:293–305
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1996 Springer-Verlag Berlin Heidelberg
About this chapter
Cite this chapter
Jensen, A. (1996). Cardiovascular and Respiratory Systems of the Fetus. In: Greger, R., Windhorst, U. (eds) Comprehensive Human Physiology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-60946-6_119
Download citation
DOI: https://doi.org/10.1007/978-3-642-60946-6_119
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-64619-5
Online ISBN: 978-3-642-60946-6
eBook Packages: Springer Book Archive