What question did this study set out to answer?

To characterize the phasic blood flow patterns in large pulmonary veins and determine the physiological mechanisms responsible for generating this flow.

November 1, 1965Journal of Applied Physiology

Pattern of blood flow in the pulmonary veins of the dog

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Authors

EMEugene MorkinUniversity of Arizona JCJohn A. CollinsThomas Jefferson University HGHarold S. GoldmanAlbert Einstein College of Medicine

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Implication

Does not support clinical practice changes; leaves open translation of canine pulmonary venous flow to human studies.

Key Points

To characterize the phasic blood flow patterns in large pulmonary veins and determine the physiological mechanisms responsible for generating this flow.
Chronically implanted sine-wave electromagnetic flowmeters and recorded cineangiographic observations in dogs.
Evaluated pressure and flow curves across both cardiac sides, quantified energy required for left ventricular filling, and reconstructed flow pulses using a mathematical circulation model.
Pulmonary venous flow proved continuous and pulsatile, with peak flow reaching roughly twice the mean rate approximately 0.10 seconds after ventricular systole began.
Left atrial contraction caused a brief slowing or flow reversal, while respiratory variations directly matched pulmonary arterial flow changes beat by beat.
Pressure-flow curve analyses and mathematical modeling demonstrated that transmitted right ventricular pressure is the dominant driver of pulmonary venous flow pulses.

Cite This Study

Morkin et al. (1965) studied this question.

synapsesocial.com/papers/6a8876b433299ecf904fe744 https://doi.org/10.1152/jappl.1965.20.6.1118

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Pattern of blood flow in the pulmonary veins of the dog

Discussion

Member takes

Implication

Key Points

Cite This Study

Pattern of blood flow in the pulmonary veins of the dog

Discussion

Member takes

Implication

Key Points

Cite This Study

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