Cardiothoracic & vascular anesthesia

Assessing the impact of different heparin dosing regimens for cardiopulmonary bypass on anticoagulation: the HepDOSE pilot study

Can J AnaesthPublished Pilot randomised trial

Authors' conclusion

This pilot study indicates that, while larger heparin dosing for routine cardiac surgery results in subtle biochemical changes in coagulation, there is no demonstrable benefit in postoperative blood loss or transfusion requirements.

Study context

Population
Patients undergoing routine elective cardiac surgery on cardiopulmonary bypass (CPB) in a single tertiary cardiac centre
Participants
60 patients
Comparison
Initial heparin dose 300 vs 400 vs 500 U/kg before CPB
Primary endpoint
Postoperative blood loss and transfusion
Follow-up
First 24 hr after surgery
Methodological detailsprospective, single-centre
  • Prospective
  • Single-centre

Primary result

As reported in the abstract

Blood loss and transfusion · 24 hr
  • No difference in overall blood loss, packed RBC transfusion or other blood product transfusion

Secondary outcomes

Total administered heparin dose

Fibrinopeptide A (FPA), fibrinopeptide B (FPB), D-dimer

No statistically significant differences at the measured time intervals

Thrombin-antithrombin (TAT) complexes

Trend towards lower TAT on CPB with greater heparin dosing; statistically significant after protamine

Original publication

Assessing the impact of different heparin dosing regimens for cardiopulmonary bypass on anticoagulation: the HepDOSE pilot study. Can J Anaesth. Published 20 November 2023. doi:10.1007/s12630-023-02645-6

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