PRESSURE GRADIENT AND BLOOD FLOW IN HUMAN ARM VEINS : A Proposed Explanation of the Pumping Mechanism

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概要

• 論文の詳細を見る

• In a patient with mitral stenosis we previously found a negative periphero-central pressure gradient (P-C PG) despite a forward peripheral venous blood flow velocity (PVBFV) during supine leg exercise. The present study was undertaken to confirm this finding and elucidate its mechanism. In 6 patients with congestive heart failure, P-C PG was reversed from -2.4 to -18.7 cm H_2O for 1 to 5 minutes during exercise. PVBFV, measured simultaneously with peripheral venous pressure (Pv) in 8 subjects, remained positive; 5 of these were patients with a negative P-C PG. the effect of intravenous lidocaine (1-26 mg) was studied in 13 patients: In 4 of 13 patients the change in Pv by saline injection was smaller than that after lidocaine (2-5 mg) injection (-0.5 ±0.5, 3.9±0.8 cm H_2O, mean ±SE, respectively) (p<0.02). In 13 patients Pv rose after a small dose of lidocaine. After a larger dose the rate of rise of Pv decreased on Pv dropped. No significant change was observed in the central venous pressure. In 6 patients who performed Valsalva's maneuver, the rate of rise of Pv during the test decreased or unchanged after lidocaine injection. The probability of a pumping mechanism in superficial human arm veins was discussed.

• 社団法人日本循環器学会の論文
• 1984-05-20

著者

• Fujiwara Hisayoshi

  First Division Of Internal Medicine Wakayama Red Cross Hospital

• WATANABE RYOJI

  First Division of Internal Medicine, Wakayama Red Cross Hospital

• SOMA TAKASHI

  Department of Electrical Engineering, Kyoto Institute of Technology

• Soma Takashi

  Department Of Electrical Engineering Kyoto Institute Of Technology

• Watanabe Ryoji

  First Division Of Internal Medicine Wakayama Red Cross Hospital

• Watanabe Ryoji

  First Department Of Medicine Wakayama Red Cross Hospital

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