Alterations of oxygen and carbon dioxide tensions in crush-injured calf muscles of rat

Abstract

The alterations of oxygen and carbon dioxide tensions in crush-injured muscles were determined by means of a Silastic-tonometer. Immediately after crush-injury the oxygen tension was elevated, then declined and 2 hours after trauma a value of 10 to 14 mmHg was reached. The oxygen tension was 8 to 15 mmHg the next four days after injury, from 5th day the tissue pO2 elevated rapidly. On 14th day the tissue oxygen tension was 60-72 mmHg, thereafter decreased gradually to 40-50 mmHg by the 19th day. The tissue pCO2 elevated within 2 hours after injury to 95-105 mmHg. From 5th day decreased gradually to 50 mmHg by the 21st day.