Elevated activated partial thromboplastin time does not correlate with heparin rebound following cardiac surgery.

Purpose: Exposure to cardiopulmonary bypass (CPB) is associated with postoperative coagulopathy and hemorrhage. Recent literature indicates that heparin rebound occurs almost universally following cardiac surgery. We conducted this pilot study to evaluate if the presence of residual circulating heparin following cardiac surgery can be diagnosed by elevation of activated partial thromboplastin time (APTT).

Perioperative coagulation management and blood conservation in cardiac surgery: a Canadian Survey.

Objective: To determine which strategies are currently used for (anti)coagulation management and blood conservation during cardiac surgery in Canada.

Design: Institutional survey.

Setting: University hospital.