Computer-assisted dosing of heparin. Management with a pharmacy-based anticoagulation service

Area of Science:

• Pharmacology
• Clinical Pharmacy
• Health Informatics

Background:

• Inpatient anticoagulation therapy requires accurate dosing to prevent complications.
• Established practice guidelines improve anticoagulation accuracy and reduce hemorrhagic events.
• This study evaluated pharmacy-based, computer-assisted dosing of intravenous heparin therapy.

Purpose of the Study:

• To assess the feasibility and effectiveness of pharmacy-based, computer-assisted heparin dosing.
• To compare the accuracy and speed of anticoagulation management between computer-assisted and physician-managed protocols.

Main Methods:

• A prospective computer-assisted dosing group (N=131) was compared to a historical physician-managed cohort (N=57).
• Heparin dosing involved a bolus followed by computer-generated infusion rates.
• The target was an activated partial thromboplastin time (APTT) ratio of 1.8 (range, 1.5–2.5) times baseline.

Main Results:

• 90% of the computer-assisted group achieved therapeutic APTT within 24 hours, versus 62% in the control group (P < .001).
• Median time to therapeutic APTT was 7 hours in the computer-assisted group, compared to 15 hours in the control group (P < .001).
• Therapeutic range adherence was 75% in the computer-assisted group, versus 43% in the control group (P < .001).

Conclusions:

• Pharmacy-based, computer-assisted heparin dosing is a feasible strategy for inpatient anticoagulation.
• This approach leads to faster and more accurate anticoagulant dosing compared to traditional physician management.
• Implementation can improve patient safety by optimizing heparin therapy effectiveness.