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September 1, 1981Cardiovascular Research

Surgically induced volume overload and left ventricular hypertrophy in dogs increased stroke work per gram (P<0.005) and total left ventricular myocardial blood flow (P<0.05) versus sham operation.

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Population

14 dogs

Comparison

Surgical shunt between the left subclavian… vs Sham operation

Design

Preclinical

Key result

Surgically induced volume overload and left ventricular hypertrophy in dogs increased stroke work per gram (P<0.005) and total left ventricular myocardial blood flow (P<0.05) versus sham operation.

Authors

PHP. B. HultgrenABA. A. Bove

Discussion

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Overview

Preserved perfusion efficiency in compensated canine hypertrophy; hypothesis-generating and should not yet inform human practice.

Structured PICO

P
Population
14 dogs subjected to a surgical shunt to induce chronic volume overload and left ventricular hypertrophy, compared to sham-operated controls.
I
Intervention
Surgical shunt between the left subclavian artery and the left atrial appendage to induce chronic volume overload and left ventricular hypertrophy
C
Comparator
Sham operation
O
Outcome
Myocardial blood flow (MBF) and mechanical function (ejection fraction, mean wall stress, tension-time index, stress-time index, stroke work)surrogate

Main Result

p-value: p=<0.05

In a canine model, volume overload hypertrophy without heart failure is associated with normal myocardial blood flow per gram of tissue and normal flow distribution at rest and during exercise.

Cite This Study

Hultgren et al. (1981) studied Chronic volume overload and left ventricular hypertrophy (n=14). Surgical shunt between the left subclavian artery and the left atrial appendage vs. Sham operation was evaluated on Myocardial blood flow and mechanics (p=<0.05). Surgically induced volume overload and left ventricular hypertrophy in dogs increased stroke work per gram (P<0.005) and total left ventricular myocardial blood flow (P<0.05) versus sham operation.

synapsesocial.com/papers/6a9c5262a84bc2d98a241c67https://doi.org/10.1093/cvr/15.9.522
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Also Consider

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

  1. 1Regional myocardial blood flow during exercise in dogs with chronic left ventricular hypertrophy.1981 · 188 citations
  2. 2Exercise-induced subendocardial dysfunction in dogs with left ventricular hypertrophy.1990 · 81 citations
  3. 3Effect of maximal coronary vasodilation on transmural myocardial perfusion during tachycardia in dogs with left ventricular hypertrophy.1981 · 91 citations
  4. 4Effects of experimental volume-overload hypertrophy on myocardial blood flow and cardiac function1981 · 14 citations
  5. 5Coronary blood flow in experimental canine left ventricular hypertrophy.1978 · 190 citations