Electrolytic and electrocardiographical correlations under 7% oxygen in nitrogen in dogs

Abstract

Electrolytic concentrations in plasma and electrocardiographic parameters in dogs have been studied by means of lineal and canonical correlations, after the animals have been submitted to 7% oxygen in nitrogen for three hours. At the end of hypoxia there appeared hypokalemia, increased T wave potential, low R wave and enlargement of ST segment and PQ interval. The coefficients of lineal correlation between Mg++ levels in plasma and R wave potential and those of Na+ and QRS interval were reversed at the final stages of hypoxia.