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Impact of Preoperative Iron Deficiency on Blood Transfusion in Elective Cardiac Surgery
Marine Hubert1, Baptiste Gaudriot1, Sebastien Biedermann1
1CHU Rennes, Anesthésie-Réanimation CTCV, F-35033 Rennes, France.
Insights
Preoperative iron deficiency in elective cardiac surgery patients is common, leading to lower hemoglobin and increased blood transfusions. Early assessment and correction are recommended for better patient blood management.
Area of Science:
- Cardiology
- Hematology
- Surgical Patient Management
Background:
- Preoperative iron deficiency is a prevalent condition in patients undergoing elective cardiac surgery.
- Iron deficiency can impact patient outcomes and complicate surgical management.
Purpose of the Study:
- To determine the incidence of preoperative iron deficiency in patients undergoing elective cardiac surgery.
- To evaluate the consequences of preoperative iron deficiency on patient outcomes, including transfusion requirements and morbidity.
Main Methods:
- A prospective observational study was conducted in a university hospital's cardiac surgery unit.
- 272 patients undergoing elective cardiac surgery were assessed for iron status (transferrin saturation, serum ferritin) preoperatively.
- Clinical data, including blood transfusion rates and postoperative outcomes, were systematically recorded.
Main Results:
- 31% of patients exhibited preoperative iron deficiency, with 13% being anemic.
- Iron-deficient patients had significantly lower hemoglobin levels throughout their hospital stay.
- These patients also received blood transfusions more frequently during surgical procedures (31% vs. 19%, p=0.0361).
Conclusions:
- Preoperative iron deficiency is associated with reduced hemoglobin levels and increased transfusion needs in elective cardiac surgery.
- Routine preoperative iron status assessment and correction are crucial components of patient blood management.
- Implementing these measures may help reduce transfusion-related morbidity in cardiac surgery patients.
Objective:
To evaluate the incidence and consequences of preoperative iron deficiency in elective cardiac surgery.
Design:
A prospective observational study.
Setting:
The cardiac surgery unit of a university hospital, from November 2016 to February 2017.
Participants:
All patients presenting for elective cardiac surgery during the study period, with the exclusion of noncardiac thoracic surgeries, surgeries of the descending aorta, endovascular procedures, and patients affected by an iron-metabolism disease.
Interventions:
Transferrin saturation and serum ferritin levels were systematically assessed before surgery, and the care of patients was maintained as usual.
Measurements And Main Results:
Routine analyses, clinical data, and the number of blood transfusions were recorded during the hospital stay. Among the 272 patients included, 31% had preoperative iron deficiency and 13% were anemic. Patients with iron deficiency had significantly lower hemoglobin levels throughout the hospital stay and received blood transfusions more frequently during surgical procedures (31% v 19%, p = 0.0361). Detailed analysis showed that patients with iron deficiency received more red blood cell units. There were no differences in postoperative bleeding, morbidity, or mortality.
Conclusions:
Iron deficiency appears to be related to lower hemoglobin levels and more frequent transfusions in elective cardiac surgery. Assessing iron status preoperatively and correcting any iron deficiencies should be one of the numerous actions involved in patient blood management for such surgeries, with the aim of reducing morbidity associated with both anemia and transfusion.
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