Key result
Instrumental recording of the left parasternal impulse defines displacement characteristics that distinguish normal from abnormal impulses and may reveal underlying ventricular and atrial hypertrophy.
Why the study?
Can recording the left parasternal impulse distinguish normal from abnormal impulses and reveal underlying ventricular and atrial hypertrophy in normal subjects and patients with heart disease?
Observational
Can recording the left parasternal impulse distinguish normal from abnormal impulses and reveal underlying ventricular and atrial hypertrophy in normal subjects and patients with heart disease?
The study defines the displacement characteristics of the left parasternal impulse to distinguish normal from abnormal and assesses its reliability in detecting ventricular and atrial hypertrophy.
Parasternal impulse recordings may support bedside RV hypertrophy assessment; leaves open validation against current imaging.
A lift or heave which is palpable at the left sternal edge is an accepted clinical sign of right ventricular hypertrophy. The parasternal impulse has been recorded in normal subjects and in patients with heart disease, and the results are described in this paper. A detailed description of the instrument used to make the recordings has already been published This instrument records absolute displacement of a selected area on the chest wall. By correlating the recordings with clinical examination, chest radiographs, electrocardiograms, and the results of right heart catheterization, we have been able to define, in terms of displacement, the characteristics that distinguish normal from abnormal impulses. We have also attempted to assess the reliability of an abnormal impulse in revealing underlying ventricular and atrial hypertrophy.
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Gillam et al. (1964) conducted an observational in Heart disease and right ventricular hypertrophy. Instrumental recording of the left parasternal impulse vs. Normal subjects was evaluated on Characteristics distinguishing normal from abnormal impulses and reliability in revealing underlying ventricular and atrial hypertrophy. Instrumental recording of the left parasternal impulse defines displacement characteristics that distinguish normal from abnormal impulses and may reveal underlying ventricular and atrial hypertrophy.
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