Forty patients subjected to cavitary operations were examined. A high risk of hemodynamic disorders necessitated invasive monitoring; with this aim in view a catheter was inserted for measuring arterial pressure and the Swan-Ganz catheter for measuring the pressure in the pulmonary artery, in which helped monitor the hemodynamics and oxygen transport in the course of hypervolemic hemodilution. Plasma substitutes (one of two) were selected at random.
View Article and Find Full Text PDFIn 40 patients, whose expected hemodynamic instability during surgery necessitated invasive monitoring (Swan-Ganz catheter) and arterial pressure monitoring the hemodynamic and oxygen transport parameters in conditions of hypervolemic hemodilution were investigated in randomized tests. After insertion of an arterial catheter (arteria radialis) as well as Swan-Ganz pulmonary arterial catheter via the vena jugularis interna, one of the two volume substitutes selected at random was infused in quantities of 125 ml/5 min and the hemodynamic changes were measured after infusion of 500 ml and finally after a wedge pressure of 18 mmHg was reached. Using either solution, the measurements indicated significant increases in mean arterial pressure as well as in central venous pressure (ZVD) and wedge pressure.
View Article and Find Full Text PDFThe cardiopulmonary effects of lactated Ringer's solution (RL) were compared with those of 10% hydroxyethyl starch, hetastarch (HES), given in 44 therapeutic interventions in 15 critically ill patients by crossover design. Each agent was given to each patient at least once; seven patients received each agent twice. Infusions were continued until the wedge pressure (WP) had increased to 16 +/- 2 mm Hg in trauma patients and 18 +/- 2.
View Article and Find Full Text PDFComparison of the effects of various volume substitutes on hemodynamics and oxygen transport variables in critically ill patients. A computerized monitoring system was used to register the hemodynamic effects of lactated ringers solution, human albumin 5%, human albumin 20%, hydroxyethylstarch 6% (Plasmasteril, Fresenius, Oberursel) and hydroxyethylstarch 10% (HAES-Steril, Fresenius, Oberursel) in 25 patients who required invasive monitoring during ICU treatment. In periods of relative volume deficits as documented by a wedge pressure of 11-13 mm of mercury the various substitutes were administered until the wedge pressure reached 15-17 mm of mercury.
View Article and Find Full Text PDFWe tested prospectively 30 hypotensive shock patients using a continuous, on-line, real-time hemodynamic and oxygen transport monitoring system with a previously described predictive index, modified for the clinical conditions in our ICU. Continuous monitoring and display of cardiac output and 20 or more derived variables, together with the predictive index, were a feasible and useful approach. Unlike previously documented series of elective postoperative general surgical patients, our series consisted of patients with multiple trauma, myocardial infarction, sepsis, and other medical emergencies as well as postoperative cardiac and general surgical patients, all of whom had respiratory failure (acute respiratory distress syndrome).
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