Table 1.

Variables analyzed

Preoperative	Operative	Postoperative
Demographics BMI ASA class [16] Comorbidities Charlson Comorbidity Index [17]	Rate of conversion from TCSA to GA Surgical diagnosis Operative procedure Total operating time Frequency of relaparotomy Type, number, and total dose of neuraxial local anesthetics used Necessity of intravenous sedation Mean HR Mean SpO2 Diuresis Fluid infusion Use of NE and maximum dose Occurrence of pain No. of patients transfused No. of PBRCs units transfused	Use of NE and maximum dose Need for mechanical ventilation Pain Respiratory depression Headache Anastomotic dehiscence Main complications organ related Overall morbidity In-hospital mortality Use and dosage of intravenous nonopioid analgesics Time to first flatus and to solid oral intake [18] Length of hospital stay No. of patients transfused No. of PRBCs units transfused

BMI, body mass index; HR, heart rate; NE, norepinephrine; SpO₂, pulse oximeter oxygen saturation.