Management of Melena in Elderly Patients on Anticoagulation

Immediate Actions

The American College of Cardiology recommends immediate assessment for shock, checking pulse rate and blood pressure to determine if shock is present, in patients with active gastrointestinal bleeding manifested as melena 2, 1
The American Heart Association suggests beginning intravenous fluid resuscitation if hemodynamically unstable, with the goal of normalizing blood pressure and heart rate prior to endoscopy, in patients with melena 1
Transfuse packed red blood cells to maintain hemoglobin above 7 g/dL, considering a threshold of 9 g/dL in elderly patients with likely cardiovascular comorbidities, as recommended by the American College of Physicians 1

Elderly patients with melena have multiple high-risk features for mortality and rebleeding, including age >80 years, with a mortality risk approximately 30% in patients >90 years, as reported by the American Gastroenterological Association 2, 3
The presence of multiple comorbidities, such as polytrauma, pleural effusion, and recent UTI, increases the risk of bleeding complications in elderly patients on anticoagulation, according to the American College of Cardiology 2, 3
Anticoagulation therapy, such as rivaroxaban, increases bleeding risk, and recent antibiotic use, like amoxicillin-clavulanate, can cause gastric irritation and bleeding, as noted by the Infectious Diseases Society of America 3

The American Society for Gastrointestinal Endoscopy recommends performing early upper endoscopy within 24 hours in patients with melena, as it is both diagnostic and therapeutic 1
Given a stable condition, endoscopy can be performed on an early elective list, rather than emergency "out of hours" endoscopy, as suggested by the British Society of Gastroenterology 2

The American College of Cardiology suggests not resuming rivaroxaban until bleeding is controlled and endoscopic therapy is successful, and anticoagulation should be resumed based on thromboembolic risk, preferably within or soon after 7 days of the bleeding event, as recommended by the European Heart Rhythm Association 4
Assessing renal function urgently is crucial in elderly patients with decreased renal function, as rivaroxaban concentrations are significantly elevated, and close observation for bleeding is required, according to the National Kidney Foundation 4

The American Gastroenterological Association emphasizes not continuing rivaroxaban in the setting of active GI bleeding, as it can lead to exsanguination, and not delaying endoscopy beyond 24 hours in high-risk elderly patients with melena 1
The American College of Physicians suggests not using epinephrine injection alone for endoscopic hemostasis and not resuming anticoagulation too early before confirming hemostasis, but also not delaying beyond 7 days if thromboembolic risk is high, as recommended by the American Heart Association 3