Management of Myocardial Infarction with Gastrointestinal Bleeding

Initial Assessment and Stabilization

In patients with concurrent MI and GI bleeding, assess hemodynamic status immediately and begin intravascular volume resuscitation as needed, with red blood cell transfusion for hemoglobin levels below 70 g/L (or below 80 g/L in patients with cardiovascular disease) 2, 3
For patients with cardiovascular disease, use a higher hemoglobin threshold of 80 g/L and a target of 100 g/L after transfusion 2
Initiate intravenous proton pump inhibitors for upper GI bleeding 4, 5
Arrange for urgent endoscopy after stabilization, which should not be delayed for mild to moderate coagulopathy 3, 6

For secondary prevention, do not routinely stop aspirin; if stopped during active bleeding, restart as soon as hemostasis is achieved 1
In patients with coronary stents, do not routinely stop dual antiplatelet therapy (DAPT) 1
In unstable/active bleeding, consider temporarily interrupting the P2Y12 inhibitor while continuing aspirin 1
P2Y12 inhibitor therapy should be reinstated within 5 days to prevent stent thrombosis 1, 4

Interrupt warfarin therapy at presentation 2, 1
For unstable GI hemorrhage on warfarin, reverse anticoagulation with prothrombin complex concentrate and vitamin K 2
For patients with low thrombotic risk, restart warfarin at 7 days after hemorrhage 2
For patients with high thrombotic risk, consider low molecular weight heparin at 48 hours after hemorrhage 2
For direct oral anticoagulants (DOACs), interrupt at presentation and consider restart at maximum 7 days after hemorrhage 1

Discontinuation of both antiplatelet agents in the setting of recent stent placement significantly increases the risk of stent thrombosis 4, 5
The risk of stent thrombosis is particularly high within the first month after stent placement 4

Immediate stabilization: fluid resuscitation and blood transfusion (Hb target 70-90 g/L, or 80-100 g/L with cardiovascular disease) 2, 3
Antiplatelet decision: continue aspirin if possible (for secondary prevention) 1
Restart P2Y12 inhibitor within 5 days 1
Post-endoscopy care: resume antithrombotic therapy according to thrombotic vs. bleeding risk 1
Consider prophylactic PPI therapy for patients requiring ongoing antiplatelet therapy 7

Completely stopping both antiplatelet agents in patients with recent coronary stents can lead to catastrophic stent thrombosis 4, 5
Proton pump inhibitors may reduce the antiplatelet activity of clopidogrel, but this interaction should not prevent their use when indicated for GI protection 7