Clinical StudiesHeart Rate Variability in Idiopathic Dilated Cardiomyopathy: Characteristics and Prognostic Value
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Abbreviations
day HR/night HR
ratio of day mean heart rate to night mean heart rate
ECG
electrocardiogram, electrocardiographic
HRV
heart rate variability
IDC
idiopathic dilated cardiomyopathy
LV
left ventricular
mean RR
mean duration of all normal to normal RR intervals
NN interval
normal to normal RR interval
rmsSD
square root of the sum of the squares of differences between adjacent normal to normal RR intervals
SDNN
standard deviation of all normal to normal RR intervals
VT
ventricular tachycardia
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Copyright © 1997 The American College of Cardiology. Published by Elsevier Inc. All rights reserved.