Pradhan Ranjeeta Rashmee, Mahapatra Ambika Prasad Khadanga, Mohapatra Swagat, Jyotiranjan Tushar, Kundu Akshaya Kumar
Department of Veterinary Physiology, College of Veterinary Science and Animal Husbandry, Orissa University of Agriculture and Technology, Bhubaneswar - 751 003, Odisha, India.
Vet World. 2017 Sep;10(9):1020-1025. doi: 10.14202/vetworld.2017.1020-1025. Epub 2017 Sep 2.
A study on age-related electrocardiographic (ECG) changes was conducted on 20 apparently healthy Black Bengal goats with no history of cardiac disorders during 2015-2016.
The goats selected for the study belonged to four different age groups; Group 1: Goats up to 6 months of age, Group 2: Above 6 months and below 1 year of age, Group 3: Above 1 year and below 2 years of age, and Group 4: Above 2 years of age. The ECG was recorded with the animals in standing position using a 12-lead standard ECG recorder (Model-Cardiart-108 MK VII, manufactured by BPL, India). The paper speed was set to 25 mm/s with the sensitivity of the machine was adjusted at 1 (1 cm=mV).
The ECG parameters were compared within different age groups, and the data were analyzed statistically using SPSS 16.0 taking a significant level of 95% (p<0.05) in all cases. The lead-I ECG revealed a significant difference in amplitude of QRS complex, PR interval, QT interval, RR interval, PQ segment, ST segment, TP segment, and heart rate among some age groups. In bipolar limb lead-II, the amplitude of T-wave, RR interval, ST segment, TP segment, and heart rate was a significant difference among some age groups. Lead-III presented significant difference among age groups in different parameters such as QRS complex duration, T-wave duration, RR interval, ST segment, TP segment, and heart rate.
The study concluded that there is a significant variation in the ECG parameters both in terms of values and configuration of ECG waves when age is taken into consideration. The results of the study might be used as a reference value for field veterinarians.
2015 - 2016年期间，对20只无心脏疾病史的健康黑孟加拉山羊进行了与年龄相关的心电图（ECG）变化研究。
所选山羊分为四个不同年龄组；第1组：6个月龄以下的山羊，第2组：6个月以上且1岁以下的山羊，第3组：1岁以上且2岁以下的山羊，第4组：2岁以上的山羊。使用12导联标准心电图记录仪（型号 - Cardiart - 108 MK VII，由印度BPL制造）在动物站立位记录心电图。纸速设置为25 mm/s，机器灵敏度调整为1（1 cm = mV）。
比较了不同年龄组的心电图参数，并使用SPSS 16.0对数据进行统计分析（所有情况下显著水平为95%，p < 0.05）。I导联心电图显示，部分年龄组在QRS波群振幅、PR间期、QT间期、RR间期、PQ段、ST段、TP段和心率方面存在显著差异。在双极肢体II导联中，部分年龄组的T波振幅、RR间期、ST段、TP段和心率存在显著差异。III导联在不同参数（如QRS波群持续时间、T波持续时间、RR间期、ST段、TP段和心率）的年龄组间呈现显著差异。
该研究得出结论，考虑年龄因素时，心电图参数在数值和心电图波形形态方面均存在显著差异。该研究结果可作为现场兽医的参考值。
