Suzuki reported a score for predicting delayed encephalopathy in a patient with acute carbon monoxide poisoning. The authors are from Shizuoka Saiseikai General Hospital in Shizuoka, Japan.
Patient selection: acute carbon monoxide poisoning
Parameters:
(1) peak CK in U/L
(2) number of days in which walking is impossible in the acute phase
X =
= (0.00031 * (peak CK)) + (0.012 * (days unable to walk)) - 3.29
probability of delayed encephalopathy =
= 1 / ( 1 + EXP((-1) * X))
score =
= (peak CK) + (40 * (number of days impossible to walk))
Interpretation:
• A score > 12,000 is associated with delayed encephalopathy.
Performance:
• The area under the ROC curve is 0.96.
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