Predictive Factors for Traumatic Intraparenchymal Hemorrhage Expansion and Its Clinical Outcomes

Area of Science:

• Neurosurgery
• Radiology
• Emergency Medicine

Background:

• Traumatic brain injury (TBI) is a significant cause of death and disability.
• Intraparenchymal hemorrhage (IPH) is a common finding in TBI, often diagnosed via computed tomography (CT).
• The necessity of routine follow-up CT for IPH is not well-established, leading to potential overuse of imaging.

Purpose of the Study:

• To identify predictors of IPH enlargement after TBI.
• To determine if specific patient groups can safely avoid follow-up CT scans.
• To optimize resource utilization and reduce radiation exposure in TBI management.

Main Methods:

• Retrospective review of head CT scans for trauma patients across two academic hospitals.
• Screening for acute IPH and analysis of clinical and radiographic data.
• Statistical analysis, including logistic regression, to identify predictors of enlargement.

Main Results:

• IPH enlargement occurred in 30% of cases, predicted by larger initial size and concurrent subarachnoid hemorrhage.
• Older age, female sex, hypertension, and antithrombotic use were linked to larger baseline hematomas.
• Small (<5 mm) isolated IPHs showed no progression or need for intervention.

Conclusions:

• Initial hematoma size and presence of subarachnoid hemorrhage are key predictors of IPH growth.
• Routine follow-up imaging may be safely omitted for patients with small, isolated IPHs.
• This approach can reduce unnecessary radiation exposure and healthcare costs.