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Arterial blood flow in deep venous thrombosis of the lower limbs
1Department of Vascular Surgery, Aker Hospital, Oslo, Norway.
Calf blood flow was measured in 19 patients with deep venous thrombosis (DVT) of the lower limb using a mercury strain gauge. The affected limb had a significantly (P less than 0.05) higher blood flow (2.9 +/- 1.4 ml/min. 100 g of tissue) then the contralateral limb (2.3 +/- 1.2 ml/min. 100 g). Blood flow velocity in the common femoral artery measured with a pulsed Doppler ultrasound flowmeter in 13 patients was also significantly (P less than 0.05) higher in the limb with DVT (6.6 +/- 2.8 cm/s) compared to the contralateral limb (5.3 +/- 3.0 cm/s). Interstitial fluid hydrostatic pressure (Pif) was measured by the "wick-in-needle" technique in the deep posterior compartment of the leg. There was a significant (P less than 0.001) increase in the limb with DVT (6.3 +/- 5.5 mmHg) compared to the contralateral limb (1.2 +/- 3.4 mmHg).
Calf blood flow was measured in 19 patients with deep venous thrombosis (DVT) of the lower limb using a mercury strain gauge. The affected limb had a significantly (P less than 0.05) higher blood flow (2.9 +/- 1.4 ml/min. 100 g of tissue) then the contralateral limb (2.3 +/- 1.2 ml/min. 100 g). Blood flow velocity in the common femoral artery measured with a pulsed Doppler ultrasound flowmeter in 13 patients was also significantly (P less than 0.05) higher in the limb with DVT (6.6 +/- 2.8 cm/s) compared to the contralateral limb (5.3 +/- 3.0 cm/s). Interstitial fluid hydrostatic pressure (Pif) was measured by the "wick-in-needle" technique in the deep posterior compartment of the leg. There was a significant (P less than 0.001) increase in the limb with DVT (6.3 +/- 5.5 mmHg) compared to the contralateral limb (1.2 +/- 3.4 mmHg).