PMID- 8213028 OWN - NLM STAT- MEDLINE DCOM- 19931029 LR - 20190814 IS - 0001-5172 (Print) IS - 0001-5172 (Linking) VI - 37 IP - 6 DP - 1993 Aug TI - Hemodynamic changes associated with thermodilution cardiac output determination in canine acute blood loss or endotoxemia. PG - 602-6 AB - Since the technique of thermodilution (TD) cardiac output measurement, per se, causes hemodynamic alterations, the author examined whether the alterations elicited by iced injectate are augmented in the presence of acute blood loss or endotoxemia, compromised conditions frequently associated with critically ill patients. Acute blood loss (N = 8) and endotoxemia (N = 8) were induced by withdrawing arterial blood approximately 20-30 ml.kg-1 over 30 min and by a slow intravenous infusion of E. coli endotoxin 2.5-3.0 mg.kg-1 over 10 min, respectively, in anesthetized dogs. The magnitudes of decreases in mean arterial and pulmonary artery pressures during slowing of heart rate (HR) following injection of iced injectate 3 ml were slightly less in acute blood loss than in normovolemia, whereas in endotoxemia the degree of mean arterial pressure decrease during slowing of HR following iced injectate 3 ml was slightly less as compared with that before endotoxemia. However, the alterations in other hemodynamic variables following injection of iced injectate 3 ml were similar between dogs with and without acute blood loss or endotoxemia. No profound hemodynamic changes were observed during any TD cardiac output measurements under both conditions. Cardiac output estimated by TD correlated closely with pulmonary blood flow measured by electromagnetic flowmeter in endotoxemia (r > 0.9) but not during acute blood loss. These results indicate that TD cardiac output determination does not cause serious hemodynamic alterations in endotoxemia or acute blood loss, and can estimate right ventricular output accurately in endotoxemia but not in acute blood loss. FAU - Nishikawa, T AU - Nishikawa T AD - Department of Anesthesiology, University of Tsukuba, Ibaraki, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Acta Anaesthesiol Scand JT - Acta anaesthesiologica Scandinavica JID - 0370270 RN - 0 (Bacterial Toxins) RN - 0 (Endotoxins) RN - 142M471B3J (Carbon Dioxide) RN - S88TT14065 (Oxygen) SB - IM MH - Acidosis/physiopathology MH - Animals MH - Atrial Function, Right/physiology MH - Bacterial Toxins/adverse effects MH - Blood Pressure/physiology MH - Carbon Dioxide/blood MH - Cardiac Output/*physiology MH - Dogs MH - Endotoxins/*adverse effects MH - Escherichia coli MH - Female MH - Heart Rate/physiology MH - Hemodynamics/*physiology MH - Hemorrhage/*physiopathology MH - Male MH - Oxygen/blood MH - Thermodilution MH - Toxemia/*physiopathology MH - Ventricular Function, Right/physiology MH - Ventricular Pressure/physiology EDAT- 1993/08/01 00:00 MHDA- 1993/08/01 00:01 CRDT- 1993/08/01 00:00 PHST- 1993/08/01 00:00 [pubmed] PHST- 1993/08/01 00:01 [medline] PHST- 1993/08/01 00:00 [entrez] AID - 10.1111/j.1399-6576.1993.tb03773.x [doi] PST - ppublish SO - Acta Anaesthesiol Scand. 1993 Aug;37(6):602-6. doi: 10.1111/j.1399-6576.1993.tb03773.x.