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[A new Doppler echocardiography parameter of diastolic ventricular function].
R Opgenorth-Welslau1, J M Curtius, H H Hilger
1Klinik III für Innere Medizin der Universität Köln.
Zeitschrift Fur Kardiologie
|July 1, 1990
Summary
This study found that measuring flow velocity in the left ventricular outflow tract (LVOT) during atrial contraction (V(A*)) correlates with standard measurements in the left ventricular inflow tract (LVIT). This offers a new way to assess diastolic function.
Area of Science:
- Cardiology
- Echocardiography
- Physiology
Context:
- Doppler echocardiography of the left ventricular inflow tract (LVIT) assesses diastolic function.
- A distinct flow velocity, V(A*), is observed in the left ventricular outflow tract (LVOT) during late diastole.
Purpose:
- To compare LVOT V(A*) with LVIT V(A) and V(E) to evaluate diastolic function.
- To determine if LVOT V(A*) provides additional diagnostic information for diastolic function.
Summary:
- The study compared LVOT V(A*) with LVIT V(A) and V(E) in patients with left ventricular hypertrophy, coronary heart disease, and healthy controls.
- Measurements included maximal velocities (Vmax) and time velocity integrals (TVI) using pulsed Doppler.
- A slight correlation was found between Vmax-A* and Vmax-A (r = .60), and TVI-A* and TVI-A (r = .64).
Impact:
- This research suggests LVOT V(A*) may offer a novel, complementary metric for assessing diastolic function.
- Findings could lead to refined echocardiographic evaluations of diastolic heart conditions.