HOMEPRODUCTSCOMPANYCONTACTFAQResearchDictionaryPharmaSign Up FREE or Login

Beneficial effects of nitroprusside administration on left ventricular dysfunction and myocardial ischemia in severe aortic stenosis.

Abstract
Although surgical therapy is effective for reducing excessive left ventricular (LV) afterload in valvular aortic stenosis (AS), salutary short-term medical treatment has been lacking. Since we have shown LV systolic pressure (SP) is altered concordant with arterial SP in AS by vasopressors, the present study evaluated efficacy of nitroprusside (NP) on LV function, energetics, and perfusion in 15 severe AS patients. NP infusion (average 33 micron/min) proved beneficial in each: LVSP 192 mm Hg was reduced to 164; arterial SP decrement equaled LVSP change; LV end-diastolic pressure 19 mm Hg declined to 10: cardiac index (2.73 L/min/m2) and heart rate were unaltered; total systemic vascular resistance 1433 dsc-5 decreased to 1201; elevated LV stroke work index 92 gm.m/m2 was diminished to 74. Simultaneously, LV O2 consumption fell, LV diastolic flow was unchanged, while subendocardial perfusion increased. Thus cautious NP therapy with careful monitoring provided marked reduction of LV affected and improved LV function, energetics, and coronary flow distribution.
AuthorsN A Awan, A N DeMaria, R R Miller, E A Amsterdam, D T Mason
JournalAmerican heart journal (Am Heart J) Vol. 101 Issue 4 Pg. 386-94 (Apr 1981) ISSN: 0002-8703 [Print] United States
PMID7211666 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't, Research Support, U.S. Gov't, P.H.S.)
Chemical References
  • Ferricyanides
  • Nitroprusside
Topics
  • Aged
  • Aortic Valve Stenosis (complications, drug therapy)
  • Blood Pressure (drug effects)
  • Cardiac Output (drug effects)
  • Coronary Disease (complications, drug therapy)
  • Female
  • Ferricyanides (therapeutic use)
  • Heart Rate (drug effects)
  • Heart Ventricles (physiopathology)
  • Humans
  • Male
  • Middle Aged
  • Nitroprusside (therapeutic use)
  • Oxygen Consumption (drug effects)
  • Stroke Volume (drug effects)
  • Vascular Resistance (drug effects)

Join CureHunter, for free Research Interface BASIC access!

Take advantage of free CureHunter research engine access to explore the best drug and treatment options for any disease. Find out why thousands of doctors, pharma researchers and patient activists around the world use CureHunter every day.
Realize the full power of the drug-disease research graph!


Choose Username:
Email:
Password:
Verify Password:
Enter Code Shown: