Systemic and splanchnic hemodynamics following hemorrhage and volume restitution with Haemaccel in portal hypertensive rats: The effect of propranolol

Nir Hilzenrat, Arie Arish, Arieh Yaari, Emanuel Sikuler

    Research output: Contribution to journalArticlepeer-review

    7 Scopus citations


    Background and Aims: Recently, we found in a portal hypertensive rat model that hemorrhage and volume restitution with Haemaccel, a low viscosity plasma expander, induced an increase in cardiac output and portal venous inflow. The present study was conducted to evaluate whether pretreatment with propranolol will attenuate these hyperdynamic changes. Methods: Portal hypertension was induced by portal vein constriction. Treatment was initiated 14-21 days later. Propranolol (30 mg/kg per day) or water were administered for 7 days via a gastric gavage. Under ketamine anesthesia, 18 h after the last given dose, blood was withdrawn at a constant rate of 0.3 mL/min for 15 min followed by a 15-min stabilization. Haemaccel was infused at the same rate and volume used for withdrawal. Hemodynamic measurements were performed after volume restitution in both groups by using radioactive microspheres. Results: Eight rats were studied in each group. In the propranolol-treated animals, portal venous inflow was decreased (2.4±0.8 vs 3.8±0.7 mL/min per 100 g bodyweight; P< 0.01), while splanchnic arteriolar and porto-collateral resistance were increased (52.8±21.0 vs 32.8±13.0 and 6.0±1.4 vs 4.1±0.7 mmHg × min × 100 g bodyweight/mL; P<0.05, respectively). Cardiac output, mean arterial pressure, heart rate, total peripheral resistance and portal pressure were not significantly different between the two groups. Conclusion: In this model, pretreatment with propranolol prevented the increase in portal venous inflow, which occurs following hemorrhage and volume restitution with Haemaccel. Although caution should be taken in extrapolating data from animal models to humans, our results suggest that volume replacement during a portal hypertensive-related bleeding episode may be safer in a patient treated with non-selective β-adrenoreceptor antagonists.

    Original languageEnglish
    Pages (from-to)796-800
    Number of pages5
    JournalJournal of Gastroenterology and Hepatology (Australia)
    Issue number7
    StatePublished - 1 Jan 2001


    • Haemaccel
    • Portal hypertension
    • Propranolol
    • Radioactive microspheres
    • Viscosity

    ASJC Scopus subject areas

    • Hepatology
    • Gastroenterology


    Dive into the research topics of 'Systemic and splanchnic hemodynamics following hemorrhage and volume restitution with Haemaccel in portal hypertensive rats: The effect of propranolol'. Together they form a unique fingerprint.

    Cite this