Why the study?
Does left ventricular hypertrophy blunt respiratory changes in transmitral Doppler flow patterns in patients with untreated essential hypertension?
Population
83 patients with untreated essential hypertension, mean age 46 +/- 8 years, 49 males.
Comparison
Presence of left ventricular hypertrophy (LVH) vs Absence of left ventricular hypertrophy
Design
Cross-sectional
Authors
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Caution advised interpreting respiratory Doppler changes in LVH; leaves open stiffness mediation in hypertension, needing prospective validation.
Does left ventricular hypertrophy blunt respiratory changes in transmitral Doppler flow patterns in patients with untreated essential hypertension?
Left ventricular hypertrophy in hypertensive patients blunts the normal respiratory variations in transmitral Doppler flow velocities, likely due to increased left ventricular wall stiffness.
Hsu et al. (2005) studied this question.
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