Systemic-to-pulmonary artery pressure ratio as a predictor of patient outcome following liver transplantation

Table 1 Patient demographics and surgical characteristics

	Age (yr)	Gender (F:M ratio)	MELD (score)	OR duration (min)	Crystalloid (mL)	Colloid (mL)	PRBC (units)	FFP (units)
Group 1 (n = 66)	55.6 ± 8.6	24:42 (36%)	18.7 ± 8.4	400.9 ± 43.5	5804 ± 2824	1440 ± 972	3.3 ± 3.7	2.8 ± 3.0
Group 2 (n = 25)	58.9 ± 5.4	7:18 (28%)	16.3 ± 6.9	427.9 ± 63.3	6086 ± 3424	1607 ± 626	3.9 ± 3.1	4.0 ± 4.6
P-value	0.081	0.189	0.204	0.081	0.690	0.428	0.473	0.148

Data are shown as mean ± SD. P value was obtained using paired t-test for all parameters except gender. The 1-tail exact binomial calculation with probability value of 0.5. Group 1 (n = 66): Patients with MAP/mPAP ratio increase during anhepatic period; Group 2 (n = 25): Patients with MAP/mPAP ratio decrease or no change during anhepatic period. MELD: Model For End-Stage Liver Disease score; OR duration: Anesthesia time from induction to ICU transfer; Crystalloid: Amount of intraoperative normal saline; Colloid: Amount of intraoperative 5% Albumin; PRBC: Packed red blood concentrate; FFP: Fresh frozen plasma; MAP/mPAP: Mean systemic-to-pulmonary artery pressure.