Nikolic, G, Sugiura, T, Spodick, D H
The outcome of 50 consecutive modified predischarge exercise tests after acute myocardial infarction was predicted by three independent observers on the basis of ST segment displacement in the...
Wayne, V S, Bishop, R L, Spodick, D H
Fourteen patients with pericardial effusions without clinical signs of tamponade (pulsus paradoxus or other cardiac and circulatory abnormalities) showed inspiratory reductions in echocardiographic...
Regression equations for heart rate (HR)--ejection time (LVET) relations provide the appropriate factors for predicting or correcting left ventricular ejection time at any HR. We investigated HR-LVET...
Physiological responses to prompt and sustained squatting. Measurement by systolic time intervals.
Ten healthy men, ages 22 to 35, were studied non-invasively standing (control), at the onset of squatting ('prompt squat'), and at two minutes of squatting. Squatting produced decreases in heart...
Spodick, D H, Ball, H G, Pigott, V M
Optimal paper speeds have not been established for all time-based measurements of the cardiac cycle by appropriately designed observer performance studies. In 10 subjects (5 normals and 5 cardiac...
Duration of diastole versus cycle length as correlates of left ventricular ejection time.
Studies were done on 82 normal subjects to evaluate cycle length versus duration of diastole as determinants of left ventricular ejection time. Cycle length and its reciprocal, heart rate, had the...