Computer-assisted endoscopic coronary artery bypass anastomoses: a chronic animal study.

Autor:	Stephenson ER Jr; Department of Surgery, The Milton S. Hershey Medical Center, Penn State Geisinger Health System, Hershey 17033, USA., Ducko CT, Sankholkar S, Hoenicke EM, Prophet GA, Damiano RJ Jr
Jazyk:	angličtina
Zdroj:	The Annals of thoracic surgery [Ann Thorac Surg] 1999 Sep; Vol. 68 (3), pp. 838-43.
DOI:	10.1016/s0003-4975(99)00794-8
Abstrakt:	Background: With traditional instruments, endoscopic coronary artery bypass grafting (ECABG) has not been possible. This study was designed to determine the feasibility of using a robotically-assisted microsurgical system to perform ECABG in a chronic animal model. Methods: Nine calves were placed on cardiopulmonary bypass after harvesting the left internal mammary artery (LIMA). Subxiphoid endoscopic ports (2 instrument, 1 camera) were placed, and a robotic system was used to perform ECABG between the LIMA and left anterior descending coronary artery. LIMA graft flow (LIMAQ) was measured. Animals were sacrificed at 1 month, and hearts underwent angiographic and histologic analyses. Results: Acute graft patency was 89% (8/9). Two animals died suddenly within the first 48 hours. There was no significant difference in mean acute and chronic (n = 6) LIMAQ (40.9+/-4.7 and 38.5+/-5.0 ml/min, respectively). Survivors had an angiographic patency rate of 100% (6/6), confirmed by histology. Conclusions: This study shows that ECABG is feasible in a chronic animal model with excellent results.
Databáze:	MEDLINE
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