A novel photoelectric method for recording the apical impulse was utilized to correlate physical signs of left ventricular heave with ECG and radiographic evidence of hypertrophy in hypertensive patients.
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May aid bedside LVH assessment in hypertension; leaves open prospective validation of the photoelectric method.
A left ventricular type of apical impulse, left ventricular preponderance in the electrocardiogram, and left ventricular enlargement in the chest X-ray are the three cardinal signs on which the diagnosis of left ventricular hypertrophy complicating hypertension is made clinically. In this paper we have analysed with the aid of optical records the detailed characteristics of the apical impulse in a series of patients with hypertension and related the nature and amount of left ventricular heave to the presence and degree of hypertrophy indicated in the electrocardiogram and X-ray of the chest. A new method of recording the apical impulse was used, in which a photoelectric cell recorded the displacement of the chest wall.
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Beilin et al. (1962) studied this question.
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