Methods: All young Singaporean men undergo compulsory 2year military service. ... had the longest PR interval (146.72±19.54 vs 145.11±19.01 in Malays vs.
Abstract: P3391 Electrocardiographic reference ranges in 115,522 multiethnic young singaporean men Authors: C.H. Sia 1, E.C.Y. Lee 1, M. Dalakoti 1, Y.Q. Tan 1, W.E. Chow 1, K.S.A. Yeo 1, T. Chua 2, K.K. Yeo 2, D. Chong2, R.S. Tan 2, C.S.P. Lam 2, 1Singapore Armed Forces Medical Corps Singapore Singapore, 2National Heart Centre Singapore Singapore Singapore, On behalf: SAFE Protocol Investigators Topic(s): Big data analysis in cardiology, registries and databases Citation: European Heart Journal ( 2016 ) 37 ( Abstract Supplement ), 659 Background/Introduction: Ethnicity and anthropometric differences contribute to differences in electrocardiographic (ECG) variables. Little data exist on ECG reference ranges in healthy young Asians. Purpose: To define ECG reference ranges in a multiethnic healthy young Asian population. Methods: All young Singaporean men undergo compulsory 2year military service. Preconscription medical screening comprising demographic, clinical, anthropometric and ECG data collection (all captured electronically) is mandatory to determine eligibility for physical training. We performed retrospective analysis of accrued electronic data for all Singaporean men screened between 1 November 2009 and 31 December 2014. Results: See Table 1. 2264 (1.9%) of 117786 men screened had unclassified race, and were not included in the analysis. The Chinese population had the longest PR interval (146.72±19.54 vs 145.11±19.01 in Malays vs 141.34±18.65 in Indians), QRS duration (94.36±9.43 vs 92.41±9.27 in Malays vs 92.32±9.08 in Indians) and QTcB interval (407.75±20.88 vs 402.94±21.22 in Malays vs 400.32±21.09 in Indians). Conclusions: Significantly different ECG variables in young Chinese Singaporeans compared to other races and published international norms prompt further investigation of ethnicspecific norms for preexercise screening. Table 1. Demographic, clinical, anthropometric and electrocardiographic parameters by ethnicity Variable Number (%) Age, years
