ABSTRACT
ackground:We have conducted this study on 400 normal healthy adults, males were 288, Females were 112 and the age group is 20 to 50 years. Electrocardiogram were taken after careful history and clinical examination and after ruling out any cardiac abnormality and other conditions also. The diseases particularly respiratory, electrolyte and endocrinal abnormalities will causes ECG changes. We have excluded symptomatic persons in the study. Aims and Objectives: To study the pattern of Rate, Rhythm, QR's Duration, PR interval, QT duration and ST. T changes which occurs in normal individuals and their relation to age. Material and Methods: In our study we have included 400 normal healthy subjects out of 400, 288 were males, 112 were female. We have taken the 12 lead ECG with standardization of 10mm. Results: Sinus Bradycardia is observed in 4 persons, tachycardia is observed in 16 subjects. Incomplete RBBB was observed in 8 subjects. Conclusion: Healthy individuals may have so many variations in ECG which were considered as with in Normal limits, so understanding normal ECG and deviations in normal individuals is very important to interpret the disease states and treating them.