Journal of cardiothoracic and vascular anesthesia
-
J. Cardiothorac. Vasc. Anesth. · Dec 1995
Comparative StudyClinical estimation of left and right ventricular volume with open chest compared with transesophageal echocardiography and fast-response thermodilution.
A clinical measure--inspection of the relation of the heart (acute margin) to the diaphragm--has shown a strong positive correlation to transesophageal echocardiographic (TEE) determination of left ventricular end-diastolic area (LVEDA) during weaning from cardiopulmonary bypass (CPB). The present study examines the correlation between right ventricular end-diastolic volumes (RVEDV) before and after CPB when using the same clinical measure of left ventricular dimension. ⋯ It is concluded that there is only a weak correlation regarding RVEDV before and after CPB when the patient is transfused to the line of contact, whereas this clinical measure correlates well with LVEDA.
-
J. Cardiothorac. Vasc. Anesth. · Dec 1995
Comparative StudyComparison of the alteration of cardiac function by sevoflurane, isoflurane, and halothane in the isolated working rat heart.
Despite its widespread use, little is known about sevoflurane's physiologic effects. The direct myocardial effects of sevoflurane were compared with both halothane and isoflurane. ⋯ These data suggest that sevoflurane depresses cardiac function less than either halothane in doses of 1.0 and 1.5 x MAC or isoflurane at doses of 3 x MAC.
-
J. Cardiothorac. Vasc. Anesth. · Dec 1995
Comparative StudyThe relationship between systolic pressure and stroke volume describes myocardial contractility.
To develop a method of measuring end-systolic elastance from information obtained outside the ventricle and thereby simplify its transduction. ⋯ In this study, measurement of EES from the ventricular outflow tract during progressive aortic constriction produced results more consistent and descriptive than EES by traditional techniques and has the potential for obtaining elastance measurements from possibly less invasive techniques.