palchak_pediatric_head_trauma_rule: Palchak (UC Davis) Rule for Pediatric Head Trauma
Description
Calculates the Palchak (UC Davis) Rule to identify children at low risk for traumatic brain injury (TBI) after blunt head trauma. The rule helps determine the need for head CT imaging. Children with none of the high-risk criteria are considered low risk and may be managed with observation.
Clinical guidance regarding the need for CT imaging.
Arguments
abnormal_mental_status
Numeric (0 or 1). Is there abnormal mental status (e.g., GCS < 15, agitation, somnolence, slow response, repetitive questioning)? (1 = Yes).
clinical_signs_skull_fracture
Numeric (0 or 1). Are there clinical signs of skull fracture (e.g., palpable fracture, hemotympanum, raccoon eyes, Battle's sign, CSF leak)? (1 = Yes).
history_vomiting
Numeric (0 or 1). Is there a history of vomiting? (1 = Yes).
scalp_hematoma_child_le_2y
Numeric (0 or 1). Is there a scalp hematoma in a child aged 2 years or younger? (1 = Yes).
headache
Numeric (0 or 1). Is there a history of headache? (1 = Yes).
References
Palchak MJ, Holmes JF, Vance CW, et al. A decision rule for identifying children at low risk for brain injuries after blunt head trauma. Ann Emerg Med. 2003;42(4):492-506. doi:10.1016/s0196-0644(03)00463-7
# Example 1: Low Risk# No symptoms or signspalchak_pediatric_head_trauma_rule(0, 0, 0, 0, 0)
# Example 2: High Risk# History of vomiting (1)palchak_pediatric_head_trauma_rule(0, 0, 1, 0, 0)