Our aim was to establish the normal ranges of the ECG for pediatric and adult Brazilian primary care patients. This retrospective observational study assessed all the consecutive 12-lead digital electrocardiograms of primary care patients at least 1聽year old in Minas Gerais state, Brazil, recorded ...
Sample size of at least 40 subjects. 40 subjects is accepted as the smallest sample size that allows calculation of reference ranges using a parametric method for data with a Gaussian distribution [4]. In some circumstances, separate reference ranges need to be provided by gender. In that case...
The aim of this study is to establish the normal ECG limits for adult Angolans, without established heart disease, stratified by gender and age. Methods A cross-sectional study was performed, involving 2179 participants from a population in northern Angola, without established heart disease, aged ...
Although QRS duration usually ranges between 0.o8 and 0.11s , this pattern can be observed with QRS durations of 0.12 and 0.13s. Not surprisingly, an incomplete LBBB pattern can be produced by various processes, including the following (1) conduction delays in the main trunk of the left ...
Introduction: To establish an up-to-date and comprehensive set of normal values for the clinically current measurements in the adult ECG, covering all ages for both sexes. Methods: The study population included 13,354 individuals, taken from four population studies in The Netherlands, ranging in...
Normal blood pressure ranges for children typically start at lower levels than adults and gradually rise as they grow. It can vary based on their age, sex, and height. Therefore, it’s essential to compare a child’s readings with age, gender, and height percentiles to determine if their ...
The 3D SSFP we used for the segmentation has higher spatial resolution and a shorter scan time than the single-shot fast spin echo acquisition used in the above validation, and is therefore likely to be even more accurate[23]. Whilst previous authors have included normal ranges for their ...
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Reference ranges for cardiac structure and function using cardiovascular magnetic resonance (CMR) in Caucasians from the UK Biobank population cohort J Cardiovasc Magn Reson, 19 (2017), p. 18 View in ScopusGoogle Scholar 15 A.M. Maceira, S.K. Prasad, M. Khan, D.J. Pennell Normalized left...
In people with a normal AV node, the rate of ventricular contraction in untreated disease usually ranges from 80 to 180 beats/minute; the higher the transmission, the higher the heart rate. Some older people have slow transmission through the AV node due to disease within the AV node. When...