Tunthanathip and Udomwitthayaphiban reported a nomogram for predicting mortality following a penetrating traumatic brain injury (TBI). The authors are from Songklanagarind Hospital and Prince of Songkla University in Thailand.
Patient selection: penetrating traumatic brain injury
Parameters:
(1) hypotension (blood pressure less than 90/60)
(2) pupillary reaction to light
(3) midline shift in mm
points for baseline shift =
= (shift) * 10
Parameter
Finding
Points
hypotension
no
0
yes
59.2
pupillary reaction to light
normal
abnormal
71.4
total score =
= SUM(points for both parameters)
Interpretation:
• minimum score: 0
• maximum score: 230.7
probability of death =
= (0.007589 * (score)) - 0.4109
Performance:
• The area under the ROC curve is 0.86.
Additional findings associated with mortality from the univariate analysis:
(1) hypoxia
(2) bihemispheric injuries
(3) multilobar injuries
(4) subarachnoid hemorrhage
(5) intraventircular hemorrhage
(6) basal cistern effacement
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Specialty: Surgery, orthopedic, Emergency Medicine
