Influence of heart rate on left ventricular isovolumic relaxation time: a Doppler study in healthy newborns.
De Merulis
Antonio
A
Institute of Pediatrics and Gynecologic, University La Sapienza, Rome, Italy.
Calcagni
Giulio
G
Versacci
Paolo
P
Lucchini
Renato
R
Ventriglia
Flavia
F
Marino
Bruno
B
D003326:Coronary Circulation / Q000502:physiology; D018618:Echocardiography, Doppler, Color; D018619:Echocardiography, Doppler, Pulsed; D005260:Female; D006339:Heart Rate / Q000502:physiology*; D006352:Heart Ventricles / Q000000981:diagnostic imaging; D006801:Humans; D007229:Infant Welfare; D007231:Infant, Newborn; D008297:Male; D009200:Myocardial Contraction / Q000502:physiology*; D011237:Predictive Value of Tests; D012016:Reference Values; D013995:Time; D016276:Ventricular Function