Mandibular Angle Fracture in a Patient With a Recent Myocardial Infarction

The recent MI (6 weeks) and drug-eluting stent place her at elevated perioperative cardiac risk, but the fracture is not immediately life-threatening. The decision is a balance between cardiac risk and the risk of delaying fixation (infection, malunion, nonunion, airway issues).

Key considerations:

• Current guidelines generally recommend delaying elective surgery for 6 months after MI and 6 months after drug-eluting stent placement, but urgency modifies this. A mandibular fracture with malocclusion is semielective and can often be managed with closed reduction or delayed open reduction if the patient is stable.
• Dual antiplatelet therapy should not be stopped without cardiology input because of stent thrombosis risk. If surgery is necessary, continue aspirin and coordinate with cardiology about clopidogrel; some protocols continue both with meticulous hemostasis.
• Obtain cardiology consultation, repeat ECG, and consider troponin if any symptoms.
• Optimize medically: continue beta-blocker and statin, control pain, and ensure adequate hydration.

The safest plan is often to temporize with maxillomandibular fixation or a conservative approach if the fracture is minimally displaced, then proceed with definitive fixation after cardiology clearance and the appropriate interval.

Perioperative measures include:

• Continue aspirin; do not stop dual antiplatelet therapy without cardiology approval. If clopidogrel must be held, the decision should be made by cardiology with a documented plan.
• Use local hemostatic agents (oxidized cellulose, thrombin, tranexamic acid) and meticulous surgical technique.
• Maintain normothermia, normovolemia, and adequate oxygenation; avoid hypotension and tachycardia.
• Continue beta-blockade and statin therapy; avoid withdrawal.
• Use regional or local anesthesia with epinephrine cautiously; epinephrine can cause tachycardia, so monitor.
• Consider tranexamic acid systemically or topically to reduce bleeding.
• Have blood products available if needed; check CBC and coagulation profile.
• Postoperative monitoring in a telemetry setting if cardiac risk is high.

Antibiotic prophylaxis for infective endocarditis is not indicated for this fracture unless there is another indication.

Closed management (maxillomandibular fixation or observation with soft diet) avoids general anesthesia and surgical bleeding risk, which is attractive in a patient with recent MI and dual antiplatelet therapy. However, closed treatment may result in malocclusion, especially with an angle fracture, and requires patient compliance and adequate dentition for fixation.

Open reduction and internal fixation provides more predictable occlusion and earlier return to function, but requires anesthesia and carries bleeding risk with antiplatelet therapy. In a minimally displaced angle fracture, closed treatment or a conservative approach may be reasonable if occlusion can be maintained. If displacement increases or the patient cannot tolerate MMF, open reduction with cardiology clearance is preferred.

The decision should be individualized, documented, and made with cardiology and anesthesia input, weighing malunion risk against cardiac and bleeding risk.