How often should subcutaneous heparin be administered for DVT prophylaxis?

Subcutaneous heparin for DVT prophylaxis is typically administered every 8-12 hours. This frequent dosing schedule is designed to maintain effective anticoagulation levels that assist in the prevention of deep vein thrombosis. The timing allows for a balance between providing adequate protection against the formation of clots and minimizing the potential for adverse effects such as bleeding.

Dosing once a day may not provide enough anticoagulant effect for optimal prevention, especially in patients who are at higher risk for DVT. Twice a day dosing improves efficacy but may still fall short during long periods between doses. Administering heparin every hour is impractical and likely to lead to increased risks of complications and the potential for overdose, emphasizing the necessity of a well-established protocol for administration frequency.