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    • Vasopressin and...

    Vasopressin and nitroglycerin combo reduces bleeding during liver surgery

    Written by Dr. Kamal Kant Kohli Kohli Published On 2018-04-04T19:15:10+05:30  |  Updated On 4 April 2018 7:15 PM IST
    Vasopressin and nitroglycerin combo reduces bleeding during liver surgery

    Various methods are used to reduce venous blood pressure in the hepato-splanchnic circulation to minimize blood loss during liver surgery. Previous studies show that combination of vasopressin and nitroglycerin reduces portal pressure and flow in patients with portal hypertension. Dr.Wisén E et al. conducted a study to investigate the effect of the combination of Vasopressin and nitroglycerin in patients with normal portal pressure and found that combination decreases portal pressure and hepato-splanchnic blood flow in normal portal pressure.The study appears in Acta Anaesthesiologica Scandinavica.


    The researchers studied in all, 13 patients in whom measurements were made twice to confirm baseline (C1 and BL), during vasopressin infusion 4.8 U/h (V), and during vasopressin infusion combined with nitroglycerin infusion (V + N). Portal venous pressure (PVP), hepatic venous pressure (HVP), central haemodynamics and arterial and venous blood gases were obtained at each measuring point, and portal (splanchnic) and hepato-splanchnic blood flow changes were calculated.


    It was found that Vasopressin alone did not affect PVP, whereas HVP increased slightly. In combination with nitroglycerin, PVP decreased from 10.1 ± 1.6 to 8.9 ± 1.3 mmHg (P < 0.0001), and HVP decreased from 7.9 ± 1.9 to 6.2 ± 1.3 mmHg (P = 0.001). Vasopressin reduced portal blood flow by 47 ± 19% and hepatic venous flow by 11 ± 18%, respectively. Addition of nitroglycerin further reduced portal- and hepatic flow by 55 ± 13% and 30 ± 13%, respectively. Vasopressin alone had minor effects on central haemodynamics, whereas addition of nitroglycerin reduced cardiac index (3.2 ± 0.7 to 2.7 ± 0.5; P < 0.0001). The arterial-portal vein lactate gradient was unaffected.


    The authors concluded that the combination of vasopressin and nitroglycerin decreases portal pressure and hepato-splanchnic blood flow, and could be a potential treatment to reduce bleeding in liver resection surgery.

    Bleedingblood flowDr Wisén EhaemodynamicsHypertensionliver surgerynitroglycerinPortal venous pressuresplanchnicVasopressin
    Source : With inputs AAS

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    Dr. Kamal Kant Kohli Kohli
    Dr. Kamal Kant Kohli Kohli
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