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. 1970 Aug;49(8):1539–1550. doi: 10.1172/JCI106371

Effects of increasing left ventricular filling pressure in patients with acute myocardial infarction

Richard O Russell Jr 1, Charles E Rackley 1, Jaoquin Pombo 1, David Hunt 1, Constantine Potanin 1, Harold T Dodge 1
PMCID: PMC322633  PMID: 5431663

Abstract

Left ventricular performance in 19 patients with acute myocardial infarction has been evaluated by measuring left ventricular response in terms of cardiac output, stroke volume, work, and power to progressive elevation of filling pressure accomplished by progressive expansion of blood volume with rapid infusion of low molecular weight dextran. Such infusion can elevate the cardiac output, stroke volume, work, and power and thus delineate the function of the left ventricle by Frank-Starling function curves. Left ventricular filling pressure in the range of 20-24 mm Hg was associated with the peak of the curves and when the filling pressure exceeded this range, the curves became flattened or decreased. An increase in cardiac output could be maintained for 4 or more hr. Patients with a flattened function curve had a high mortality in the ensuing 8 wk. The function curve showed improvement in myocardial function during the early convalescence. When left ventricular filling pressure is monitored directly or as pulmonary artery end-diastolic pressure, low molecular weight dextran provides a method for assessment of left ventricular function.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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