Surgical TreatmentHIP Fracture Accelerated Surgical TreaTment And Care tracK 2 Trial

Inclusion Criteria:

1. age ≥45 years;
2. diagnosis of hip fracture during working hours with a low-energy mechanism requiring surgery;
3. troponin elevation ( at least one troponin measurement above the upper limit of normal occurring from the time of hip fracture to the time of randomization); and
4. informed consent.

Exclusion Criteria:

1. taking a therapeutic dose of an anticoagulant for which no reversing agent is available and the anesthesiologist or surgeon believe surgery within 6 hours of eligibility criteria met would not be safe;
2. patients on a therapeutic vitamin K antagonist with a history of heparin induced thrombocytopenia (HIT);
3. patients with peri-prosthetic fracture, open fracture or bilateral fractures;
4. patients requiring an emergency surgery for another reason (e.g., subdural hematoma);
5. patients with acute myocardial infarction deemed to be clinically unstable, with a mechanical complication (i.e., acute papillary muscle rupture, ventricular septal defect), ST elevation myocardial infarction, or cardiogenic shock;
6. patients refusing consent; or
7. patients previously enrolled in HIP ATTACK-2.