PMID: 3770118Nov 1, 1986Paper

Pneumatic tourniquet application and nerve integrity: motor function and electrophysiology

Experimental Neurology
A J NitzD H Matulionis

Abstract

Limb motor function, leg girth, spontaneous potentials, and compound muscle action potentials were evaluated in a rat animal model at various times after tourniquet application and occlusion of blood flow to the sciatic nerve. The thighs of the animals were compressed by a pneumatic tourniquet at clinically relevant pressures (200, 300, and 400 mm Hg) for 1 to 3 h. Extrinsic blood supply was occluded by ligation of the common iliac and femoral arteries and intrinsic by removing a 12-mm segment of the epineurium from the sciatic nerve. Motor function deficits were noted for 1 to 5 weeks in limbs of animals subjected to tourniquet compression and from 2 to 4 weeks following vascular manipulation. Control leg girths did not change during the experiment whereas girths of tourniquet-compressed legs increased initially and then decreased and remained below control values. Girths of limbs subjected to vascular manipulation were unaltered during the 1st week but decreased in a similar fashion to those of tourniquet-compressed limbs at 3 and 6 weeks. Spontaneous potentials were present and compound muscle action potentials were reduced in animals after tourniquet application and vascular manipulation compared with control values. These ...Continue Reading

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