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Published on: January 19, 2024
Acute onset of folate deficiency in patients under intensive care
Abstract:
Four patients with ruptured abdominal aortic aneurysm developed thrombocytopenia and marked megaloblastic changes within 3-10 days of surgery. In 2 patients, direct evidence of folate deficiency within marrow cells was obtained by measuring deoxyuridine suppression in short-term bone marrow cultures. The results suggest that folate deficiency was limited to marrow tissue. Folate deficiency localized to the bone marrow offers an explanation for the extremely rapid onset of thrombocytopenia in these patients. The significance of these findings with regard to folate metabolism is discussed. The importance of recognizing this potentially fatal complication of critical illness is emphasized, because it should be readily prevented by folic acid therapy.
Insights
Ruptured abdominal aortic aneurysm surgery can cause rapid folate deficiency in bone marrow, leading to thrombocytopenia. Early folic acid therapy can prevent this potentially fatal complication.
Area of Science:
- Hematology
- Surgical Complications
- Nutritional Deficiencies
Background:
- Ruptured abdominal aortic aneurysm (AAA) is a life-threatening condition requiring emergency surgery.
- Post-operative complications can significantly impact patient outcomes.
- Thrombocytopenia, a decrease in platelet count, can arise from various causes.
Purpose of the Study:
- To investigate the cause of rapid-onset thrombocytopenia in patients following ruptured AAA repair.
- To explore the role of folate deficiency in post-operative hematological changes.
- To highlight a preventable complication of critical illness.
Main Methods:
- Case series of four patients with ruptured AAA undergoing surgery.
- Hematological analysis including bone marrow examination.
- Deoxyuridine suppression test to assess folate deficiency in marrow cells.
Main Results:
- Four patients developed thrombocytopenia and megaloblastic changes 3-10 days post-surgery.
- Direct evidence of folate deficiency in bone marrow was confirmed in two patients.
- Folate deficiency appeared localized to the bone marrow.
Conclusions:
- Localized bone marrow folate deficiency can rapidly cause thrombocytopenia after ruptured AAA surgery.
- This complication is potentially fatal but preventable with folic acid supplementation.
- Recognizing and treating folate deficiency is crucial in critically ill patients.
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