In 15 critically ill patients requiring adrenergic support, right ventricular ejection fraction (RVEF) and right ventricular (RV) volumes were measured by the thermodilution technique receiving 5 micrograms/kg.min of dopamine and after replacement by the same dose of dobutamine. Shift from dopamine to dobutamine resulted in significant increases in stroke index from 28.1 +/- 3.6 to 31.0 +/- 3.8 ml/m2 (p less than .01) and significant decreases in pulmonary artery balloon-occluded pressure from 15.1 +/- 1.0 to 13.9 +/- 1.2 mm Hg (p less than .05) and right atrial pressure (RAP) from 14.0 +/- 1.3 to 12.2 +/- 1.1 mm Hg (p less than .05). RVEF increased slightly but significantly from 21.5 +/- 2.7% to 23.7 +/- 2.9% (p less than .01) so that RV end-diastolic volume (RVEDVI) was unchanged (140 +/- 12 vs. 141 +/- 12 ml, nonsignificant). RVEDVI/RAP ratio increased from 11.3 +/- 1.0 to 12.9 +/- 1.1 ml/mm Hg (p = .037). These results support the view that dobutamine has more favorable effects on RV function than dopamine in critically ill patients in the absence of profound hypotension and also indicates that higher filling pressures under dopamine administration can be related to changes in ventricular pressure/volume relationship.
SCOPUS: ed.j
CAR is frequently altered in cardiac arrest survivors treated by TTM. Altered CAR during normothermia was independently associated with poor outcome.
The purpose of this chapter is to compare colloid solutions based on their different characteristics. The results of outcome studies comparing fluids will be covered elsewhere. We will first discuss basic notions; thereafter, general properties of colloids will be addressed, before finishing with a review of each available solution. It is noteworthy that the availability of solutions in North America and in Europe is not the same and we will, therefore, try to limit discussion to general aspects rather than going into the specifics of individual fluids.
info:eu-repo/semantics/published
Vincent, Jean-Louis FCCM1; Angus, Derek MD, MPH, FCCM; Annane, Djillali MD, PhD; Bernard, Gordon MD; Faist, Eugen MD, PhD; Giroir, Brett MD; Reinhart, Konrad MD Author Information
SUMMARy Anemia is one of the most commonly encountered abnormal laboratory findings in intensive care unit (ICU) patients, and many ICU patients will receive a blood transfusion during their ICU stay. However, the determinants of when and to whom transfusions should be given are not clear cut and have been the subject of considerable debate in recent years. Transfusion practice may vary considerably between institutions and across countries. The ABC (anemia and blood transfusion in critical care) study reported increased ICU and hospital mortality rates in patients who had received a transfusion. On the other hand, low hemoglobin levels are still associated with increased mortality and morbidity. The “traditional” transfusion trigger of 10 g/dL certainly no longer applies to all, but may well be relevant in certain groups, e.g., patients with cardiac disease. Transfusions should certainly be more restrictive than before, but applying this policy across the board cannot be recommended; each patient must be assessed individually on the basis of past and present clinical history, and in light of oxygenation and hemodynamic parameters. Clearly, further study is needed before we are able to determine the best transfusion strategies for our ICU patients.
