Effect of age and gender on QRS complex amplitude in healthy adults
Joint Authors
Khalil, Yasir M.
al-Silivani, Baybin Khurshid
Mahmud, Muzahim F.
Source
Journal of the Faculty of Medicine Baghdad
Issue
Vol. 56, Issue 2 (30 Jun. 2014), pp.221-224, 4 p.
Publisher
University of Baghdad Faculty of Medicine
Publication Date
2014-06-30
Country of Publication
Iraq
No. of Pages
4
Main Subjects
Topics
Abstract EN
Background : There is controversy about the upper normal value of QRS complex amplitude in adult population under the age of 40 years.
Most of the left ventricular hypertrophy voltage criteria were designed or tested for people above 40 years.
In addition to age, QRS amplitude is also affected by gender and racial factors.
Objectives : To evaluate the impact of age on QRS amplitude in each gender separately in healthy adults.
Patients and Methods : Electrocardiograms from 563 overtly healthy adults (386 male and 177 female) aged 18-40 years were obtained using Cardios PC based ECG machine, 12-lead ECGs were recorded and QRS amplitude was measured as the sum of (SV1 + RV5) and (SV2 + RV6) both by computer and manual revision.
The mean QRS amplitude was calculated for the entire study sample and then for each sex separately.
The mean QRS amplitude was then compared between the two genders and in different age groups in the study sample.
Linear regression lines of QRS amplitude versus age were drawn for each gender separately.
Results : The mean ± SD of QRS amplitude in the study sample was within normal range.
Also It was found that males have significantly higher mean QRS amplitude than females (p = 0.001), and there was highly significant decline in mean QRS amplitude with increasing age group in the study sample (p = 0.001).
Linear regression lines of QRS amplitude versus age in each gender separately have shown that males have greater QRS amplitude than females and there was a clear decline in QRS amplitude with increased age from 18-to-40 years in males, but the picture was different in females as they have shown a very slight increase in QRS amplitude with increased age from 18-to-40 years.
Conclusions : The mean QRS amplitude in males was significantly higher than females.
There was a clear decline in QRS amplitude with increased age from 18-40 years in males ‘on the contrary, in females there was a very slight increase in QRS amplitude with increased age from 18-40 years.
American Psychological Association (APA)
Khalil, Yasir M.& al-Silivani, Baybin Khurshid& Mahmud, Muzahim F.. 2014. Effect of age and gender on QRS complex amplitude in healthy adults. Journal of the Faculty of Medicine Baghdad،Vol. 56, no. 2, pp.221-224.
https://search.emarefa.net/detail/BIM-419561
Modern Language Association (MLA)
Khalil, Yasir M.…[et al.]. Effect of age and gender on QRS complex amplitude in healthy adults. Journal of the Faculty of Medicine Baghdad Vol. 56, no. 2 (2014), pp.221-224.
https://search.emarefa.net/detail/BIM-419561
American Medical Association (AMA)
Khalil, Yasir M.& al-Silivani, Baybin Khurshid& Mahmud, Muzahim F.. Effect of age and gender on QRS complex amplitude in healthy adults. Journal of the Faculty of Medicine Baghdad. 2014. Vol. 56, no. 2, pp.221-224.
https://search.emarefa.net/detail/BIM-419561
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 224
Record ID
BIM-419561