Key result
The A/E ratio derived by transmitral pulsed Doppler echocardiography highly correlated with invasively determined pulmonary capillary wedge pressure (r = 0.98, p < 0.001).
Why the study?
Does transmitral pulsed Doppler echocardiography accurately estimate pulmonary artery wedge pressure compared to right heart catheterization in ICU patients?
Population
104 ICU patients (64 male, 40 female) aged 26 to 73 years (mean 54.6 +/- 10.3) without valvular heart disease.
Comparison
Transmitral pulsed Doppler echocardiography to… vs Right heart catheterization to invasively…
Design
Cross-sectional
Authors
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May support noninvasive PCWP estimation by A/E ratio in select ICU patients; leaves open prospective validation versus catheterization.
Observational (n=104)
Does transmitral pulsed Doppler echocardiography accurately estimate pulmonary artery wedge pressure compared to right heart catheterization in ICU patients?
Effect estimate: r = 0.98
p-value: p=<0.001
Transmitral pulsed Doppler echocardiography (A/E ratio) provides a highly accurate noninvasive estimate of pulmonary capillary wedge pressure in ICU patients without valvular heart disease.
STOURK et al. (1990) conducted an observational in ICU patients (n=104). Transmitral pulsed Doppler echocardiography (tpDE) vs. Right heart catheterization (RHC) was evaluated on Correlation between tpDE A/E ratio and pulmonary capillary wedge pressure (WP) (r = 0.98, p=<0.001). The A/E ratio derived by transmitral pulsed Doppler echocardiography highly correlated with invasively determined pulmonary capillary wedge pressure (r = 0.98, p < 0.001).
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