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Usefulness of esmolol in unstable angina pectoris. European Esmolol Study Group.

Abstract
Esmolol is a new cardioselective beta blocker with unique pharmacokinetic properties resulting in a half-life of only 9 minutes. The present multicenter, randomized, placebo-controlled study examined the hemodynamic and antiischemic effects of this compound given as an adjunctive to conventional medical therapy in 113 patients with unstable angina. Fifty-nine patients received esmolol and 54 received matching placebo infusions. Esmolol was titrated in a step-wise manner at dosages of 2 to 24 mg/min until a 25% reduction in the double product was achieved; thereafter, esmolol was continuously infused for up to 72 hours. Esmolol caused a significant and persistent decline in heart rate and blood pressure throughout the entire study period. Clinical events, such as development of acute myocardial infarction or the need for urgent revascularization, occurred in 3 esmolol compared with 9 placebo patients (p = 0.06). There was also a trend toward reduction of silent ischemia as judged by Holter monitoring (mean [+/- standard deviation] duration/patient/24 hours, 21 +/- 81 minutes in the esmolol and 35 +/- 128 minutes in the placebo groups). Esmolol-related adverse effects were mostly cardiovascular in origin and could be managed promptly by downward dose titration or cessation of drug infusion. Thus, esmolol appears to be a safe and effective drug for patients with unstable angina because it permits a large degree of flexibility in adapting the desired level of beta blockade to the patient's changing clinical presentation.
AuthorsS H Hohnloser, T Meinertz, T Klingenheben, B Sydow, H Just
JournalThe American journal of cardiology (Am J Cardiol) Vol. 67 Issue 16 Pg. 1319-23 (Jun 15 1991) ISSN: 0002-9149 [Print] United States
PMID1675036 (Publication Type: Clinical Trial, Journal Article, Multicenter Study, Randomized Controlled Trial)
Chemical References
  • Adrenergic beta-Antagonists
  • Propanolamines
  • esmolol
Topics
  • Adrenergic beta-Antagonists (pharmacokinetics, therapeutic use)
  • Adult
  • Aged
  • Angina, Unstable (drug therapy)
  • Electrocardiography, Ambulatory
  • Female
  • Half-Life
  • Hemodynamics (drug effects)
  • Humans
  • Male
  • Middle Aged
  • Propanolamines (adverse effects, pharmacokinetics, therapeutic use)
  • Prospective Studies

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