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Online Journal of Veterinary Research

Volume 24 (6):351-355, 2020.

Reference age based base apex lead electrocardiography in goats.


Aliasghar Chalmeh, Mehrdad Pourjafar, Seyed Mohamad Mehdi Heidari, Ahmad Reza Sanati,

Amin Shahbazi, Mehrdad Badkobeh, Mohamad Hosein Bagheri


School of Veterinary Medicine, Shiraz University, Shiraz, Iran.




Chalmeh A, Pourjafar M, Mehdi Heidari SM, Sanati AR, Shahbazi A, Badkobeh M, Bagheri MH., Reference aged based base apex lead electrocardiography in goats, Onl J Vet Res., 24 (6):351-355, 2020. Clinically healthy Najdi goats aged 15 days (n=13), 2 months (n=18), 6-months (n=19), 1 (n=10), 3 (n=22), 5 (n=16) and 7 year old (n=11) electrocardiograms were recorded on bipolar base apex lead, using limb lead I. Compared with 15 day olds, in goats aged 1-7 years, P wave duration was 33-40%, amplitude 19%, T wave ~32%, PR-interval 38-41%, RR-interval 44-47%, QT-interval 34-46% and ST-interval 39-52% longer (P < 0.05). P, R, S and T wave amplitude were not different between age groups. Smaller volume of the gastrointestinal tract, body and heart size in young goats may account for differences in ECG.

Keywords: Electrocardiography, Base apex lead, Iranian Najdi goat.