Electrocardiographical Studies on Hypocalcemia in Goats

Kang, Chung-Boo

Korean Journal of Veterinary Research 1983;23(1):17-23.

Chung-Boo Kang

Department of Veterinary Medicine, College of Agriculture, Gyeongsang National University

저(低)Calcium혈증(血症)에 관한 심전도학적(心電圖學的) 연구(硏究)

강정부

경상대학교 농과대학

Abstract

Experimental hypocalcemia was induced in normal goats by intravenous infusion with various concentration of $Na_2$-EDTA solution. 1. Progressive depression of reflexes and body temperature, paresis, and cardiac arrest were observed in two groups infused with 4% and 8% EDTA solution, whereas paresis and cardiac arrest were not observed in 3% EDTA group. 2. The patterns of electrocardiogram were changed according to the decrease of plasma Ca level in all of 7 goats. When plasma Ca decreased to 6mg per 100ml or below, sinus bradycardia or tachycardia and prolongation of QT interval were showed, while atrioventricular block was noted in case which the plasma Ca level decreased to 4mg per 100ml or below. Fibrillation and cardiac arrest were evident in case which the plasma Ca level decreased to as low as 3mg per 100ml.