Should surgery be delayed in patients taking direct oral anticoagulants who suffer a hip fracture? A retrospective, case-controlled observational study at a UK major trauma centre.

OBJECTIVE

To determine whether not waiting for the elimination of direct oral anticoagulants (DOACs) has an effect on the amount of perioperative bleeding in patients who undergo operative treatment of a hip fracture.

DESIGN

Observation, retrospective case-control study.

SETTING

A single UK major trauma centre.

PARTICIPANTS

Patients who sustained a hip fracture were identified using the National Hip Fracture Database (NHFD). All those found to be taking a DOAC at the time of fracture were identified (n=63). A matched group not taking a DOAC was also identified from the NHFD (n=62).

MAIN OUTCOME: Perioperative drop in haemoglobin concentration.

RESULTS

There was no relationship between admission to operation interval and perioperative change in haemoglobin concentration in patients taking DOACs (regression coefficient=-0.06 g/L/hour; 95% CI -0.32-0.20; p=0.64). No relationship was found between the time from admission to operation interval and the probability of transfusion (OR=0.94; 95% CI 0.85 to 1.90; p=0.16) or reoperation (OR=1.04; 95% CI 0.93 to 1.16; p=0.49). One mortality was recorded in the DOAC group within 30 days of admission, and this compared with five in the matched group of patients (p=0.2).

CONCLUSIONS

Delaying surgery in patients who sustain a hip fracture who are taking a DOAC drug has not been shown to reduce perioperative bleeding or affect their mortality in this study.