Evaluation of pulmonary hypertension with pulsed Doppler ultrasound

Document Type

Article

Publication Date

1-1-1987

Abstract

We examined a pulsed Doppler index between the acceleration time and right ventricular ejection time (derived from the pulmonic flow velocity pattern) for noninvaisve evaluation of pulmonary hypertension. Ninety-eight patients were analyzed prospectively prior to cardiac catheterization; invasive pressure data were then compared to this Doppler index. Using a mean pulmonary arterial pressure >20 mm Hg, and pulmonary vascular resistance >120 dys·s·cm-5 to define the presence of pulmonary hypertension, it was found that the best noninvasive correlation with the extent of pulmonary hypertension occurs when the Doppler index is compared to the log10 of pulmonary vascular resistance. An index of <0.29 correctly identified all patients with increased pulmonary vascular resistance, and an index of <0.39 always correctly predicted subjects having normal pulmonary vascular resistance. This Doppler index is, therefore, quite useful to accurately and noninvasively monitor pulmonary arterial pressures in patients who need frequent sequential evaluations.

Publication Source (Journal or Book title)

American Journal of Noninvasive Cardiology

First Page

284

Last Page

289

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