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R Stunkat

Publications and source records attributed to R Stunkat.

39 records · Page 3Linked to original sources
PubMedDate not supplied

Combined application of metabolic myocardial arrest and general profound hypothermia in aortic valve replacement.

To determine the value of general hypothermia in combination with magnesium-aspartate-procaine induced metabolic myocardial arrest, the surgical results of 2 similar groups of patients subjected to aortic valve replacement were compared. Metabolic arrest of the myocardium was achieved under mild hypothermic conditions in group I (71 patients) and in profound hypothermia in group II (48 patients). The operative mortality was 5.6% in group I and 4.1% in group II. There was no cardiac related with in group II. In group I two deaths were due to a low cardiac output state. In addition, 3 patients required inotropic support during the early postoperative period. Our results indicate, that magnesium-aspartate-procaine induced cardioplegia in combination with general profound hypothermia can provide effective myocardial protection during aortic valve replacement.

Adult↗
PubMedDate not supplied

Estimation of adequate subendocardial blood flow by online computation of systolic pressure time index and diastolic pressure time index after cardiopulmonary bypass.

Subendocardial perfusion was monitored in 48 patients subjected to valve replacement by calculation of diastolic pressure time index (DPTI), systolic pressure time index (TTI) and DPTI/TTI. An on-line computer which derives these values from the systemic pressure and wave-form was applied. For myocardial protection general body hypothermia (esophageal temperature 25 degrees C) and hypothermic injection cardioplegia were employed. No low cardiac output state occurred and no inotropic drugs were required. In all patients DPTI/TTI rose above 1 within 60 minutes from termination of cardiopulmonary bypass so that the necessity to intraaortic balloon counterpulsation could be denied in all cases. We believe that the calculation of DPTI/TTI after extracorporeal circulation is a useful modality to predict the adequacy of subendocardial perfusion and monitor myocardial performance.

Cardiac Catheterization↗