Vascular Factors

Regional vasoconstriction and extrinsic compression of damaged blood vessels by extravasated blood contribute to hemostasis on a purely mechanical level. Temporary arterial occlusion during laparoscopic partial nephrectomy can help achieve the same goal by intentionally decreasing the blood flow to the cut surface of the renal parenchyma.

This allows for better visualization that ultimately helps in achieving more permanent hemostasis after vascular clamp removal. Most likely, the extravasated blood helps hemostasis by a tamponade-like effect.

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