Journal of cardiothoracic and vascular anesthesia
-
J. Cardiothorac. Vasc. Anesth. · Aug 1995
Comparative Study Clinical TrialComparison of the use of a propofol infusion in cardiac surgical patients with normal and low cardiac output states.
This study compared the hemodynamic effects of a propofol infusion with fentanyl analgesia in patients undergoing cardiac surgery with normal and low cardiac output states. Low cardiac output was defined as a cardiac index less than 2.5 L/min/m2 with a minimum pulmonary capillary wedge pressure of 7 mmHg. ⋯ The use of a propofol infusion for induction and maintenance of anesthesia in patients with low cardiac output states undergoing cardiac surgery is not contraindicated.
-
J. Cardiothorac. Vasc. Anesth. · Aug 1995
Comparative StudyContinuous thermodilution cardiac output: agreement with Fick and bolus thermodilution methods.
Cardiac outputs were determined with continuous thermodilution, bolus thermodilution, and the Fick method during pharmacologically varied hemodynamics. ⋯ Automatic cardiac output computed with continuous thermodilution appears accurate and reliable. Also, good agreement was confirmed between cardiac output derived by continuous and bolus thermodilution methods and bolus thermodilution and Fick methods.
-
J. Cardiothorac. Vasc. Anesth. · Jun 1995
Atrioventricular sequential pacing using transesophageal atrial pacing in combination with a temporary DDD pacemaker for atrial tracking and ventricular pacing.
To determine whether atrioventricular (A-V) sequential pacing can be accomplished using transesophageal atrial pacing (TAP) in combination with a temporary DDD pacemaker for tracking the TAP stimuli and pacing the ventricle via temporary epicardial electrodes. ⋯ This report demonstrates that it is possible to A-V sequentially pace using TAP in combination with a temporary DDD pacemaker for tracking the TAP stimulus and pacing the ventricle via temporary epicardial leads. This technique may be useful when A-V sequential pacing is needed and functional temporary atrial leads are not available.
-
J. Cardiothorac. Vasc. Anesth. · Jun 1995
Comparative StudyEffects of inhaled prostacyclin as compared with inhaled nitric oxide on right ventricular performance in hypoxic pulmonary vasoconstriction.
Recently, inhalation of prostacyclin (PGI2) has been shown to cause selective pulmonary vasodilation. However, the effects of inhaled PGI2 on right ventricular (RV) performance are still unknown and therefore were compared with those of inhaled nitric oxide (NO). ⋯ In pulmonary hypertension induced by HPV, PGI2-aerosol and inhaled NO reduced RV afterload and, hence, RV oxygen demand, with only minor changes of stroke volume and cardiac output, indicating an improvement of overall efficiency of RV contraction. RV ejection fraction increased on NO, but not with PGI2. This might be explained by the fact that the reduction of pulmonary vascular resistance during PGI2 amounted to only 65% of the effect of NO. In summary, both inhaled NO and PGI2-aerosol showed beneficial effects on RV performance and may prove helpful in the treatment of acute pulmonary hypertension.