5 results match your criteria: "Diagnostic Services Clinic[Affiliation]"

Objectives: The goal of this study was to assess the safety and tolerability of omecamtiv mecarbil treatment during symptom-limited exercise in patients with ischemic cardiomyopathy and angina. These patients may have increased vulnerability to prolongation of the systolic ejection time.

Background: Omecamtiv mecarbil is a selective cardiac myosin activator that augments cardiac contractility in patients with systolic heart failure through a dose-dependent increase in systolic ejection time.

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Regional variation in patients and outcomes in the Treatment of Preserved Cardiac Function Heart Failure With an Aldosterone Antagonist (TOPCAT) trial.

Circulation

January 2015

From the Cardiovascular Division, Brigham and Women's Hospital, Boston, MA (M.A.P., B.C., A.S.D., E.F.L., S.D.S.); New England Research Institutes, Inc, Watertown, MA (S.F.A., S.M.M.); National Heart, Lung, and Blood Institute, Bethesda, MD (R.B., J.L.F.); VA Medical Center and University of Minnesota, Minneapolis, MN (I.S.A.); Hospital de Clinicas de Porto Alegre, Porto Alegre, Brazil (N.C.); Estudios Clinicos Latinoamerica, Rosario, Argentina (R.D.); Pirogov Russian National Research Medical University, Moscow, Russia (I.G.); New York Methodist Hospital, Brooklyn, NY (J.F.H.); Montreal Heart Institute, Montreal, QC, Canada (E.O., J.L.R.); University of Washington Medical Center, Seattle (J.L.P.); Diagnostic Services Clinic, Tbilisi, Georgia (T.S.); Northwestern University, Chicago, IL (S.J.S.); University of Wisconsin, Madison (N.K.S.); and University of Michigan School of Medicine, Ann Arbor (B.P.).

Background: Treatment of Preserved Cardiac Function Heart Failure With an Aldosterone Antagonist (TOPCAT) patients with heart failure and preserved left ventricular ejection fraction assigned to spironolactone did not achieve a significant reduction in the primary composite outcome (time to cardiovascular death, aborted cardiac arrest, or hospitalization for management of heart failure) compared with patients receiving placebo. In a post hoc analysis, an ≈4-fold difference was identified in this composite event rate between the 1678 patients randomized from Russia and Georgia compared with the 1767 enrolled from the United States, Canada, Brazil, and Argentina (the Americas).

Methods And Results: To better understand this regional difference in clinical outcomes, demographic characteristics of these populations and their responses to spironolactone were explored.

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Spironolactone for heart failure with preserved ejection fraction.

N Engl J Med

April 2014

From the University of Michigan School of Medicine, Ann Arbor (B.P.); the Cardiovascular Division, Brigham and Women's Hospital, Boston (M.A.P., B.C., A.S.D., E.F.L., S.D.S.); New England Research Institutes, Watertown, MA (S.F.A., B.H., C.T.K., S.M.M.); National Heart, Lung, and Blood Institute, Bethesda, MD (R.B., J.L.F., S.Y.); Veterans Affairs Medical Center and University of Minnesota, Minneapolis (I.S.A.); Hospital de Clinicas de Porto Alegre, Porto Alegre, Brazil (N.C.); Estudios Clinicos Latinoamerica, Rosario, Argentina (R.D.); Pirogov Russian National Research Medical University, Moscow (I.G.); New York Methodist Hospital, Brooklyn (J.F.H.); Montreal Heart Institute, Montreal (E.O.); University of Washington Medical Center, Seattle (J.L.P.); Diagnostic Services Clinic, Tbilisi, Georgia (T.S.); Northwestern University, Chicago (S.J.S.); and the University of Wisconsin, Madison (N.K.S.).

Article Synopsis
  • A study was conducted to assess the effects of spironolactone on patients with heart failure and preserved left ventricular ejection fraction, involving 3,445 participants who were randomly assigned to receive either the drug or a placebo.
  • Over an average follow-up of 3.3 years, spironolactone did not significantly reduce the overall rates of serious cardiovascular events compared to the placebo, though it did lower hospitalizations for heart failure.
  • The treatment was associated with increased serum creatinine levels and a higher rate of hyperkalemia but did not result in more serious adverse events, suggesting a need for ongoing monitoring during treatment.
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