Oxygen and carbon dioxide tensions in calf muscles of rat

The oxygen and carbon dioxide tension were studies with Silastic tonometer technique in skeletal muscle and subcutaneous tissue of rat. The high initial pO2 was caused by airborne contamination during implantation and declined rapidly. Tissue gas tensions measured with a Silastic tonometer reflect the healing sequences of implantation trauma and stable readings are not obtained until 14 days after implantation. After healing of implantation injury 42 to 47 mmHg pO2 and 50 to 57 mmHg pCO2 were measured in muscle and 23 to 26 mmHg pO2 and 51 to 57 mmHg pCO2 in subcutaneous tissue of rat.