A study of QTC interval in normal healthy individuals

Cadernos de Campo: Revista de Ciências Sociais

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Title A study of QTC interval in normal healthy individuals
Creator Badwe, A. N.
Nikalje, A. N.
Latti, R. G.
Kulkarni, N. B.
Description Objective: Present study is undertaken to understand genesis of variability in QTC interval in healthy subjects as per age, sex and weight parameters and planning preventive measures for any abnormal findings.
Materials and methods: 315 healthy normotensive healthy subjects (male=179, female=136) in age group of 0 to 51 years and above were selected for the study. After recording anthropometric parameters ECG was recorded in supine position in standard limb leads with paper speed of 25 mm/sec. All ECG records were analysed for rate, rhythm, waves (P, Q, R, S, T) and intervals (PR, QRS, ST, QT) in all leads. The QT interval was measured from the beginning of the QRS complex to the end of the T-wave in lead II, corrected QT (QTC) interval was calculated by using Bazett’s formula (QTC = QT/√RR).
Results: Corrected QTC interval was determined in all age groups. It is observed that in all age groups i.e., male and females recorded normal QTC values without any significant variation. Except female subjects in age group 0 to 10 recorded higher non-significant values of QTC interval. Similarly males in age group 51 and above recorded significant (P<0.05) higher QTC values than female subjects, within normal limits. Similarly a positive correlationship between age, heart rate and QTC in both study groups was recorded.
Conclusions: QTC interval is affected by various physiological factors such as age, sex, sympathetic tone, posture, meals, heart rate, and diurnal pattern and fluctuations observed in QTC interval can be critically analysed in due course of the treatment. Hence in present study it is concluded that considered physiological parameters have not caused any significant effect on QTC interval in both study groups.
Publisher Scholar Science Journals
Date 2019-10-25
Type info:eu-repo/semantics/article
Peer-reviewed Article
Format application/pdf
Identifier https://ssjournals.com/index.php/ijbar/article/view/5266
Source International Journal of Biomedical and Advance Research; Vol 10 No 10 (2019): Oct; e5266
Language eng
Relation https://ssjournals.com/index.php/ijbar/article/view/5266/3568
Rights Copyright (c) 2019 International Journal of Biomedical and Advance Research

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