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May 1, 1980Hypertension

Hypertension following coronary artery bypass surgery. Role of preoperative propranolol therapy.

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Why the study?

Does preoperative propranolol therapy increase the risk of hypertension following coronary artery bypass surgery?

Population

52 patients undergoing coronary artery bypass surgery over a 9-month period

Comparison

Preoperative propranolol therapy vs No preoperative propranolol therapy

Design

Cohort

Follow-up

Early postoperative period

Authors

PWPaul K. WheltonJFJohn T. FlahertyNMN. P. MacAllister

Discussion

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Overview

Preoperative propranolol was associated with post-CABG hypertension; this observational link leaves open causality and needs prospective confirmation.

Structured PICO

Does preoperative propranolol therapy increase the risk of hypertension following coronary artery bypass surgery?

P
Population
52 patients undergoing coronary artery bypass surgery over a 9-month period
I
Intervention
Preoperative propranolol therapy (administered during the 24 hours preceding surgery)
C
Comparator
No preoperative propranolol therapy
O
Outcome
Incidence of hypertension during the early postoperative periodsurrogate

Preoperative propranolol administration is strongly associated with the development of hypertension following coronary artery bypass surgery, which appears to be driven by an increase in systemic vascular resistance rather than renin-angiotensin mediation.

Cite This Study

Whelton et al. (1980) studied this question.

synapsesocial.com/papers/6a7078cd26a7f98052dcf8adhttps://doi.org/10.1161/01.hyp.2.3.291
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Hemodynamic and metabolic response after abrupt uithdrawal of long-term propranolol.1978 · 49 citations
  2. 2Time Course of the Blockade Effect of Propranolol on Sinus Node and Atrioventricular Node1979 · 5 citations
  3. 3Relation between plasma renin activity, angiotensin, and aldosterone and blood pressure in mild untreated hypertension.1976 · 33 citations
  4. 4Pathophysiological Aspects of the Blood Brain Barrier Change in Acute Arterial Hypertension2008 · 43 citations
  5. 5Analysis of components in a cardiogenic hypertensive chemoreflex.1975 · 127 citations