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The Annals of Thoracic Surgery, Vol 33, 116-122, Copyright © 1982 by The Society of Thoracic Surgeons
J Schaper, F Schwarz, H Kittstein, G Stammler, B Winkler, H Scheld and F Hehrlein
During open-heart operation, myocardial biopsies were taken from 31
patients undergoing aortic valve replacement during total cardiopulmonary
bypass. The first needle biopsy was taken before induction of cardiac
arrest (Kirsch cardioplegia), the second at the end of global ischemia, and
the third during the reperfusion period. Teh tissue was investigated by
electron microscopy, in both a qualitative and a quantitative manner
(morphometry). Ultrastructural morphometry revealed cellular and especially
mitochondrial swelling that occurred during the reperfusion phase, but not
after ischemia alone. On the basis of morphological measurements, this
study shows the occurrence of postischemic cellular and mitochondrial edema
that possibly might be avoided by the use of improved techniques of
myocardial protection during operation.
ARTICLES
The effects of global ischemia and reperfusion on human myocardium: quantitative evaluation by electron microscopic morphometry
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