Nomogram for predicting post-traumatic hydrocephalus after decompressive craniectomy for traumatic brain injury

Area of Science:

• Neurosurgery
• Traumatic Brain Injury (TBI) research
• Medical prediction modeling

Background:

• Post-traumatic hydrocephalus (PTH) is a serious complication following decompressive craniectomy for TBI.
• Accurate prediction of PTH is crucial for timely intervention and improved patient outcomes.
• Existing prediction methods may lack practicality or comprehensive validation.

Purpose of the Study:

• To develop and validate a practical nomogram for predicting PTH in patients undergoing decompressive craniectomy.
• To identify key clinical and radiological predictors of PTH.
• To assess the nomogram's predictive accuracy, calibration, and clinical utility.

Main Methods:

• A cohort of 516 patients undergoing decompressive craniectomy for TBI was analyzed.
• Least absolute shrinkage and selection operator (LASSO) regression identified optimal predictors from the training cohort.
• A nomogram was constructed and validated using receiver operating characteristic (ROC) curves, calibration plots, and decision curve analysis.

Main Results:

• Key predictors included preoperative subarachnoid hemorrhage Fisher grade, decompressive craniectomy type, transcalvarial herniation volume, subdural hygroma, and functional outcome.
• The nomogram demonstrated good discrimination in the validation cohort with an area under the ROC curve of 0.80 (95% CI 0.72–0.88).
• The nomogram showed good calibration and significant clinical adaptability.

Conclusions:

• A validated nomogram for predicting post-traumatic hydrocephalus after decompressive craniectomy has been developed.
• The nomogram exhibits good discrimination, calibration, and clinical practicality.
• This tool can assist in screening high-risk patients and guiding therapeutic strategies for TBI management.