January 21, 2009Respiration
Assessment of Right Ventricular Diastolic Function by Pulsed Doppler Echocardiography in Chronic Pulmonary Disease and Pulmonary Thromboembolism
Key result
Chronic pulmonary diseases and pulmonary thromboembolism were associated with significantly prolonged deceleration time and higher A/R ratios compared to healthy controls, indicating RV diastolic dysfunction.
Why the study?
Does pulsed Doppler echocardiography detect right ventricular diastolic dysfunction in patients with chronic pulmonary disease and pulmonary thromboembolism compared to healthy controls?
Population
43 subjects: 25 patients with chronic pulmonary diseases, 6 patients with chronic pulmonary thromboembolism…
Comparison
Pulsed Doppler echocardiography to determine… vs Healthy subjects (control group)
Design
Cross-sectional
Authors
Discussion
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Member takes
Implication
May support pulsed Doppler to identify RV diastolic dysfunction in pulmonary disease; leaves open prognostic or therapeutic implications.
Study Design
Type
Observational (n=43)
Structured PICO
Does pulsed Doppler echocardiography detect right ventricular diastolic dysfunction in patients with chronic pulmonary disease and pulmonary thromboembolism compared to healthy controls?
P
Population
43 subjects, including 25 with chronic pulmonary diseases, 6 with pulmonary thromboembolism, and 12 healthy controls, evaluated for right ventricular diastolic performance.
E
Exposure
Pulsed Doppler echocardiography to determine flow velocity patterns in the right ventricular inflow tract
C
Comparator
Healthy subjects (control group)
O
Outcome
Right ventricular diastolic performance (acceleration time, deceleration time, and A/R ratio)surrogate
Pulsed Doppler echocardiography demonstrates that pressure overload and preload contribute to right ventricular diastolic dysfunction in patients with chronic pulmonary disease and pulmonary thromboembolism.
Cite This Study
Nakamura et al. (2009) conducted an observational in Chronic pulmonary disease and pulmonary thromboembolism (n=43). Chronic pulmonary disease and pulmonary thromboembolism vs. Healthy subjects (control) was evaluated on Right ventricular diastolic performance (acceleration time, deceleration time, and A/R ratio). Chronic pulmonary diseases and pulmonary thromboembolism were associated with significantly prolonged deceleration time and higher A/R ratios compared to healthy controls, indicating RV diastolic dysfunction.