May 1, 1975

Correlates of the Echocardiographic Waves of the Mitral Valve in Normal Subjects of Various Ages

Q: What is the clinical evidence from this study?

Study design: Cross-Sectional. Population: Normal subjects without evidence of heart disease (n=71). Intervention: Echocardiogram of the mitral valve (A mode) vs. Comparison across age groups. Primary outcome: Intervals between various echocardiographic waves (second heart sound to peak of E-wave, E-F intervals).

Resultado clave

Echocardiographic intervals of the mitral valve, specifically the second heart sound to E-wave peak and E-F intervals, were significantly longer in older age groups compared to younger subjects.

Diseño del estudio

Tipo

Cross-Sectional (n=71)

PICO estructurado

Do echocardiographic wave intervals of the mitral valve differ across age groups in normal subjects?

Población

71 subjects without evidence of heart disease, including 14 children, 42 young and middle-aged adults, and 15 old persons.

Intervención

Echocardiogram of the mitral valve recorded in A mode, along with simultaneous electrocardiogram, phonocardiogram, apex cardiogram, and carotid and jugular tracings.

Comparador

Comparison across different age groups (children vs. young/middle-aged adults vs. old persons).

Resultado

Duration of intervals between various cardiographic waves (specifically the interval between the second heart sound and the peak of the E-wave, and the E-F interval).surrogate

Echocardiographic intervals of the mitral valve naturally lengthen with age in normal subjects, highlighting the need to account for age to avoid misdiagnosing normal variations as disease.

Resumen

A cardiographic study was performed on 71 subjects including 14 children, 42 young and middle-aged adults, and 15 old persons without evidence of heart disease. The echocardiogram of the mitral valve was recorded in the A mode by an analog method and was compared with the electrocardiogram, phonocardiogram, apex cardiogram, and carotid and jugular tracings, simultaneously obtained. The intervals between the various waves recorded by these methods were measured and the results were compared with those reported in the literature. A comparison of the duration of the intervals in the various age groups showed statistically significant differences. In particular, the intervals between the second heart sound and the peak of the E-wave and the E-F intervals in the echogram were longer in adults than in children and also longer in old persons than in younger adults. This important age difference should always be taken into account before attributing any echocardiographic deviations to disease.

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Cite This Study

Luisada et al. (Thu,) conducted a cross-sectional in Normal subjects without evidence of heart disease (n=71). Echocardiogram of the mitral valve (A mode) vs. Comparison across age groups was evaluated on Intervals between various echocardiographic waves (second heart sound to peak of E-wave, E-F intervals). Echocardiographic intervals of the mitral valve, specifically the second heart sound to E-wave peak and E-F intervals, were significantly longer in older age groups compared to younger subjects.

synapsesocial.com/papers/6a0eef4bfca5c6c9f447acdc https://doi.org/https://doi.org/10.1111/j.1532-5415.1975.tb00188.x

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