Gastrointestinal haemorrhage after off-pump coronary artery bypass

Area of Science:

• Cardiovascular Surgery
• Gastroenterology
• Critical Care Medicine

Background:

• Off-pump coronary artery bypass grafting (OPCABG) is a surgical procedure to bypass blocked coronary arteries without using cardiopulmonary bypass.
• Gastrointestinal (GI) hemorrhage is a rare but serious complication following cardiac surgery.
• Mesenteric ischemia is a potential complication of reduced blood flow to the intestines.

Observation:

• An 83-year-old male patient experienced severe gastrointestinal hemorrhage post-OPCABG.
• The patient's condition worsened after receiving noradrenaline (a vasopressor medication).
• The patient ultimately died six days after the surgery.

Findings:

• The combination of OPCABG and extensive arterial calcification may predispose patients to mesenteric ischemia.
• Postoperative GI hemorrhage in this case was potentially linked to mesenteric ischemia.
• Noradrenaline administration might have exacerbated the condition in this elderly patient.

Implications:

• This case suggests a possible mechanism for GI bleeding after OPCABG in patients with severe atherosclerosis.
• Careful consideration of hemodynamic support, particularly vasopressors like noradrenaline, is crucial in octogenarian patients undergoing OPCABG.
• Further research is warranted to elucidate the relationship between OPCABG, mesenteric ischemia, and GI complications.