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Predictive factors for bone flap infection after cranioplasty
Shinya Tabata1, Tomoya Kamide1, Kaima Suzuki1
1Department of Neurosurgery, International Medical Center, Saitama Medical University, Hidaka, Japan.
Summary
Predictors of bone flap infection after cranioplasty include smoking, allergy, and elevated postoperative body temperature. Monitoring patients with fever above 38°C on postoperative day 1 is crucial for early graft infection detection.
Area of Science:
- Neurosurgery
- Infectious Disease
- Medical Research
Background:
- Bone flap infection is a significant complication following cranioplasty.
- Identifying predictors is essential for preventing graft infections and improving patient outcomes.
Purpose of the Study:
- To investigate patient-specific and surgery-specific factors predicting bone flap graft infection after cranioplasty.
- To identify early warning signs for graft infection.
Main Methods:
- Retrospective review of 192 patients undergoing cranioplasty after craniectomy for various neurological conditions.
- Statistical analysis including odds ratios (OR) and receiver operating characteristic (ROC) analysis to determine independent predictors.
Main Results:
- The overall graft infection rate was 8.3%.
- Independent predictors for graft infection were smoking (OR 3.09), allergy (OR 6.15), and body temperature on postoperative day 1 (OR 2.57).
- A body temperature >38.0°C on postoperative day 1 had 68% sensitivity and 72% specificity for predicting infection.
Conclusions:
- Smoking, allergies, and elevated postoperative day 1 body temperature are significant predictors of cranioplasty graft infection.
- Close monitoring of patients with fever (≥38.0°C) on postoperative day 1 is recommended to detect graft infections early.

