Summary
From August 1984 to July 1992, 34 patients at Osaka University Medical School and affiliated hospitals required left or biventricular assist following open heart surgery (28 patients) and other procedures (6 patients). Five children under the age of 3 years with complex cardiac lesions were supported by left ventricular assist (LVAS). Of the 29 adult patients, left ventricular assist was applied in 21 and biventricular assist in 8, for durations of 7–984 h (average: 154 h). A pneumatic diaphragm-type pump was used in 11 patients (group 1; gr. 1) and a centrifugal pump in 19 (group 2; gr. 2). Recently, four patients received a new percutaneous LVAS with a transseptal left atrial cannula and a centrifugal pump (group 3; gr. 3). Three patients (27%) in gr. 1, 13 (68%) in gr. 2, and 1 (25%) in gr. 3 were weaned from VAS. There were two survivors (18%) in gr. 1, seven (37%) in gr. 2, and none in gr. 3. Major complications in gr. 1 were bleeding (3; 27%) and right heart failure (3; 27%); in gr. 2, bleeding (6; 32%) and thromboembolism (4; 21%); and in gr. 3, bleeding (1; 25%) and low output syndrome (LOS) (1; 25%). Sixteen patients died while on VAS; eight (50%) of them had bleeding. In contrast, of the nine patients who died after being weaned from VAS only one had bleeding. Of the nine survivors, four had complications (three had thromboembolism and one had bleeding). Postoperative bleeding after the institution of VAS was the major factor affecting survival and should be avoided to achieve better results. The new percutaneous VAS, with its low incidence of complications, may be promising.
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© 1993 Springer Japan
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Miyamoto, Y., Nakano, S., Kaneko, M., Matsuwaka, R., Satoh, H., Matsuda, H. (1993). Analysis of Complications Affecting Survival After Employment of Ventricular Assist System (VAS) Using Pneumatic and Centrifugal Pumps. In: Akutsu, T., Koyanagi, H. (eds) Heart Replacement. Springer, Tokyo. https://doi.org/10.1007/978-4-431-67023-0_31
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DOI: https://doi.org/10.1007/978-4-431-67023-0_31
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