Evaluation of a novel Cardiac Peri-Operative Transfusion Trigger Scoring system in patients with coronary artery disease

Table 1 Coronary Peri-Operative Transfusion Trigger Score (cPOTTS)

Score	Epinephrine (μg kg⁻¹ min⁻¹)^a	FiO₂ (%)^b	ScvO₂^c	Angina pectoris
0	0	≤ 35%	> 75%	No
+ 1	0–0.05	36–50%	70–75%	Occurs during exercise or manual labor or excitement
+ 2	≥ 0.06	≥ 51%	< 70%	Occurs during daily activity or quietly rest

During the operation, if ST segment was down ≥ 0.1 mV and or arrhythmia occurred, it was scored at 2 points. The total scores of four above items + 7 were the total score of cPOTTS. The top score was 10 points, and atotal score ≥ 10 was still scored as 10 points
^aThe amount of epinephrine needed to maintain normal blood pressure
^bRequirement of inspiration O₂ to sustain 95% SpO₂ (peripheral capillary oxygen saturation)
^cCentral venous oxygen saturation

ISSN: 1471-2261