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At least 343 records · Page 19Linked to original sources
PubMed1978

[Reaction of vessels of the microcirculatory bed of subcutaneous tissue to exposure to an argon laser beam].

The effect of argon laser irradiation on the microvessels of the subcutaneous fat tissue of rabbit's ear placed into Clark's transparent chamber was studied. Capillaries and venules were found to be sensitive to argon laser irradiation; functional disturbances of microcirculation were most distinct. Following laser irradiation an active reconstruction of the microcirculatory bed with the redistribution of the blood stream took place along with destruction of the vascular wall and perivascular inflammation.

Animals↗
PubMed1989

Comparative response of muscle and subcutaneous tissue pH during arterial and venous occlusion in musculocutaneous flaps.

Clinical measures often fail to detect early tissue ischemia in inadequately perfused flaps. This study investigates the application of a new pH electrode system to monitor tissue metabolism continuously in porcine and human musculocutaneous flaps. Bilateral rectus abdominis flaps based on the deep inferior epigastric pedicle were elevated in eight mixed-breed pigs. Tissue pH was measured in the subcutaneous and muscular layers with miniature glass-tip electrodes. The deep inferior epigastric artery and vein were serially and then concomitantly occluded for 20-minute periods. The decrease in tissue pH was greater following either arterial or pedicle occlusion (each 0.21 +/- 0.03 units) when compared with venous occlusion (0.10 +/- 0.02 units; p less than 0.02). Changes in muscle and subcutaneous hydrogen ion concentration were similar during arterial and venous occlusions (probability not significant). Measurement of subcutaneous pH appears to be a reliable experimental and clinical physiological tool for detecting early tissue ischemia in reconstructive flaps.

Animals↗