Abstract
Background
Recent data indicate that pneumoperitoneal carbondioxide (CO2) insufflation impairs hepatic macro- and microcirculation. Whether dopamine and endothelin-1 (ET-1) antagonists might restore liver blood during laparoscopic surgery has not yet been investigated.
Methods
For this study, 30 male WAG/Rij rats were randomized into two groups to obtain pneumoperitoneum with CO2 (n=15) or helium (n=15). All the animals were implanted with a polyethylene-50 cannula into the right vena jugularis and a Doppler ultrasound flow probe around the portal vein. In each group, the rats were administered dopamine (n=5); JKC-10, JKC-301, which is a selective endothelin-1 (ET-1) antagonist (n=5), or sodium chloride as a control (n=5). Portal blood flow was measured during intraabdominal pressures 2 to 12 mmHg. Data were analyzed using the Kruskal-Wallis h-test.
Results
The application of dopamine and ET-1 antagonists significantly improved portal blood flow over that of the control animals (p<0.05). No significant differences were found between CO2 and helium insufflation (p>0.05).
Conclusions
Dopamine and ET-1 antagonism restore portal blood flow during laparoscopic surgery independantly of the insufflation gas. Whether improved hepatic perfusion might have beneficial effects on liver function needs further investigation.
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Online publication: 23 May 2002
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Kim, Z.G., Sanli, E., Brinkmann, L. et al. Impact of dopamine and endothelin-1 antagonism on portal venous blood flow during laparoscopic surgery. Surg Endosc 16, 1292–1296 (2002). https://doi.org/10.1007/s00464-001-9208-1
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DOI: https://doi.org/10.1007/s00464-001-9208-1