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J Korean Soc Echocardiogr. 1996 Dec;4(2):181-188. Korean. Original Article. https://doi.org/10.4250/jkse.1996.4.2.181
Park DG , Sohn DW , Kim HS , Oh BH , Lee MM , Choi YS , Lee YW .
Department of Internal Medicine, Seoul National University, College of Medicine, Seoul, Korea.
Abstract

Background

Mitral flow velocity with Doppler technique has some limitaion in assessing diastolic dysfunction, especially because of the similarities of normal and pseudonormal mitral pattern. This study was performed to evaluate the usefulness of difference of deceleration time between early transmitral flow and pulmonary venous diastolic flow for differentiating pseudonormal pattern from normal in patients with hypertension.

Methods

Mitral and pulmonary venous flow velocities were recorded by thransthoracic pulsed Doppler ultrasound in 31 normal patients and 44 patients with hypertension, Nineteen patients of 44 patients with hypertension underwent cardiac catheterization and left ventricle pressures were measured.

Results

The differences of deceleration time between early transmitral and pulmonary venous diastolic flow(ΔDT) in patients with hypertension who showed normal-like transmitral flow pattern(n=25), were greater than those in normal patients(34±31 ms vs 59±48 ms, p < 0.05). Of patients with hypertension showing normal-like transmitral folw pattern, patients with prolonged ΔDT(≥70 ms, n=12) showed clinical and hemodynamic features by diastolic dysfunction in compared to patients with normal range ΔDT( < 70 ms, n=13).

Conclusions

The difference of deceleration time between early transmitral and pulmonary venous diastolic flow may be useful index for detection pseudonormalization pattern in patients with hypertension.

Copyright © 2019. Korean Association of Medical Journal Editors.