The Journal of Thoracic and Cardiovascular Surgery, Vol 73, 312-315, Copyright © 1977 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association
Evaluation of hemolysis following replacement of atrioventricular valves with procine xenograft (Hancock) valves
GR Rhodes and CL McIntosh
Twenty-two patients who had undergone valve replacement with the porcine
xenograft were studied 6 to 62 months postoperatively (mean 30.5 months)
for evidence of intravascular hemolysis. Hemolysis was not detected in any
patient and postoperative red cell indices and iron studies were normal for
the majority of patients. Five patients had significantly elevated serum
lactic dehydrogenase (LDH) values preoperatively which returned to normal
following operation. Our evidence suggests that the glutaraldehyde-fixed
porcine xenograft valve does not cause detectable hemolysis.