Key result
Left atrial pressure changes preceded those in the pulmonary capillary bed by 0.06 to 0.14 seconds during simultaneous recordings.
Why the study?
What is the time delay between pressure changes in the left atrium and the pulmonary capillary bed?
Population
12 patients
Design
Cross-sectional
Authors
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Small lag in wedged PCWP cautions against assuming instantaneous equivalence to LA pressure; leaves open validation in modern hemodynamics.
What is the time delay between pressure changes in the left atrium and the pulmonary capillary bed?
Left atrial pressure changes precede pulmonary capillary wedge pressure changes by 0.06 to 0.14 seconds, demonstrating the temporal relationship between these hemodynamic measurements.
Vérel et al. (1970) studied this question. Left atrial pressure changes preceded those in the pulmonary capillary bed by 0.06 to 0.14 seconds during simultaneous recordings.
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