Successful perioperative management for a giant ovarian tumor in older adults: A case report

Table 1 Estimation of physiologic ability and surgical stress scoring system

Calculation of preoperative risk, surgical stress, and comprehensive risk scores
Score formula
PRS: -0.0686 + 0.00345X1 + 0.323X2 + 0.205X3 + 0.153X4 + 0.148X5 + 0.0666X6
SSS: -0.342 + 0.0139Y1 + 0.0392Y2 + 0.352Y3
CRS: -0.328 + 0.936 (PRS) + 0.976 (SSS)
Age, serious heart disease, serious pulmonary disease, and diabetes mellitus are defined as present 1 or absent 0
PRS, X1 age, X2 serious heart disease, X3 serious pulmonary disease, X4 diabetes mellitus, X5 performance status (0-4), X6 ASA score (1-5), SSS, Y1 blood loss/body weight (g/kg), Y2 operating time (hour), Y3 skin incision length (0: Minor incision, 1: Laparotomy or thoracotomy only, 2: Laparotomy and thoracotomy) CRS

The estimation of physiologic ability and surgical stress scoring system consists of the preoperative risk score and the surgical stress score to calculate the comprehensive risk score. E-PASS: Estimation of physiologic ability and surgical stress; PRS: Preoperative risk score; SSS: Surgical stress score; CRS: Comprehensive risk score.