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October 1, 1981Circulation ResearchOpen Access

The deformational characteristics of the left ventricle in the conscious dog.

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Key result

Variation of left ventricular volume in conscious dogs demonstrated that ventricular eccentricity is a linear function of volume, becoming more spherical at large volumes during diastole.

Population

11 conscious dogs with chronically implanted pulse-transit ultrasonic dimension transducers and…

Design

Preclinical

Authors

COCraig O. OlsenUnited States Department of Veterans AffairsJRJ S RankinDuke UniversityCAC E ArentzenSouthern Illinois University School of Medicine

Discussion

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Implication

Hypothesis-generating for dynamic LV geometry in canines; requires human validation before any clinical relevance.

Structured PICO

P
Population
11 conscious dogs with chronically implanted pulse-transit ultrasonic dimension transducers and micromanometers
I
Intervention
Variation of left ventricular volume by inflation of implanted vena caval or aortic occluders
O
Outcome
Left ventricular deformational characteristics (eccentricity as a function of ventricular volume during diastole and ejection)surrogate

The study demonstrates that left ventricular eccentricity is a linear function of ventricular volume, providing a method for quantitatively representing the dynamic geometry of the left ventricle.

Cite This Study

Olsen et al. (1981) studied Normal physiology (conscious dogs) (n=11). Variation of left ventricular volume was evaluated on Left ventricular eccentricity and geometry. Variation of left ventricular volume in conscious dogs demonstrated that ventricular eccentricity is a linear function of volume, becoming more spherical at large volumes during diastole.

synapsesocial.com/papers/6a0fa2c22badbc352afe7675https://doi.org/10.1161/01.res.49.4.843
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Also Consider

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

  1. 1Regional diastolic mechanics of the left ventricle in the conscious dog1979 · 88 citations
  2. 2Left Ventricular Tension and Stress in Man1963 · 500 citations
  3. 3The diastolic filling of the left ventricle1980 · 17 citations
  4. 4Intramural Myocardial Shear During the Cardiac Cycle1964 · 49 citations
  5. 5Intrapericardial, Intrapleural, and Intracardiac Pressures during Acute Heart Failure in Dogs Studied without Thoracotomy1966 · 47 citations