Intraoperative changes in coronary resistance during aortic valve replacement.

  title={Intraoperative changes in coronary resistance during aortic valve replacement.},
  author={P K{\"a}rk{\"o}la and E. Saarela and S Tuononen and Risto Pokela and L. S. Nuutinen and Matti I. Kairaluoma and Teuvo K. I. Larmi},
  journal={The Annals of thoracic surgery},
  volume={25 5},
Coronary vascular resistance was investigated in 10 patients undergoing aortic valve replacement using continuous constant-pressure coronary perfusion at 32 degrees C. After coronary flow was initiated, resistance was low but increased steadily until it reached a certain resting level. The plateau was attained faster after a short period of anoxia than after a longer period. The initial postischemic resistance was dependent on the duration preceding anoxia, being of the same magnitude after… CONTINUE READING