Portal venous stasis during liver resection does not affect platelet aggregability.

Area of Science:

• Hepatobiliary Surgery
• Hemostasis
• Platelet Physiology

Background:

• Liver resections often employ the Pringle manoeuvre for bleeding control, inducing temporary portal venous stasis.
• This circulatory stasis raises concerns about potential effects on platelet aggregability.

Purpose of the Study:

• To investigate the impact of different surgical bleeding control techniques on platelet function during liver resections.
• To determine if portal venous stasis, induced by the Pringle manoeuvre, alters platelet aggregability.

Main Methods:

• Evaluated 11 patients undergoing elective liver resection for hepatic tumors.
• Compared platelet aggregation before and after surgery using adenosine diphosphate, collagen, and ristocetin.
• Assessed effects of Pringle manoeuvre (up to 50 min) versus selective vascular clamping.

Main Results:

• Mean maximal platelet aggregation amplitudes were similar before and after liver resection.
• No statistically significant differences in platelet aggregation were observed between pre- and post-operative samples.
• Both Pringle manoeuvre and selective vascular clamping showed comparable effects on platelet function.

Conclusions:

• Surgical bleeding control methods in liver resection do not significantly impact induced platelet aggregability.
• Platelet function appears resilient to temporary portal venous stasis, even up to 50 minutes during the Pringle manoeuvre.