Standard electrocardiographic parameters of base apex lead system in different age groups of clinically healthy dromedary camel (Camelus dromedarius)

Electrocardiographic parameters were measured in 93 apparently healthy dromedary camels (Camelus dromedarius) within age range from less than 6 months to 18 years old. The electrocardiograms were recorded in standard base apex lead system. Duration and amplitude of the P, QRS complex and T wave and the PR, RR, intervals, RT and ST segments and heart rate were measured and averaged from successive beats. The normal heart rate was 48±1.07 to 69±0.80 and 74±1.32 to 89±5.01 in adults and calves, respectively. The long atrioventricular node conduction time (the P-R interval) was also an important finding in this study. This parameter was 0.20–0.21 and 0.21–0.26 sec. in calves and adults, respectively. The R-T segment was 0.24–0.26 and 0.19–0.30 sec. in calves and adults, respectively. The results of the present study provide a good basis for judging the electrocardiographic parameters in the base apex lead system from different age groups of dromedary camel. It could be suggested that the base apex lead provides the most uniform electrocardiographic patterns than standard leads in dromedary camel.