Development of an Open-Heart Intraoperative Risk Scoring Model for Predicting a Prolonged Intensive Care Unit Stay

Table 4

The OHIR score model for predicting a prolonged ICU stay.

Risk factors	Score
	Present	Absent
Age (≥60 years)	1	0
P/F ratio (≤200 mmHg)	1	0
Platelet count (≤120,000/mm^3)	1	0
Inotrope/vasopressor requirement (≥2 drugs)	2	0
Serum potassium (≤3.2 mEq/L)	1	0
Atrial fibrillation (grading ≥2)	1	0

OHIR score: Open-Heart Intraoperative Risk score; total score = 7; score ≥3 suggests a prolonged stay in intensive care unit.