A subclinical high tricuspid regurgitation pressure gradient independent of the mean pulmonary artery pressure is a risk factor for the survival after living donor liver transplantation

Table 2 Patient characteristics according to TRPG and mPAP status

	Group 1 (n = 8)	Group 2 (n = 25)	Group 3 (n = 7)	Group 4 (n = 34)	p
TRPG ≥25	yes	yes	no	no
mPAP-FIO₂0.6 > 25	yes	no	yes	no
Age	55 (48–62)	58 (51–61)	59 (54–61)	58 (49–62)	n.s.
Donor age	34 (23–39)	43 (34–56)	38 (33–52)	40 (31–54)	n.s.
MELD	22 (17–25)	16 (12–22)	18 (12–20)	14 (12–17)	0.006 (1 vs 4)
Right atrial dilatation (n [%])	5 (62%)	2 (8%)	3 (42%)	4 (11%)	0.001 (1 vs 2) 0.001 (1 vs 4)
Right ventricular dilatation (n [%])	3 (37%)	1 (4%)	0	0	0.011 (1 vs 2) < 0.001 (1 vs 4)
Subclinical HPS (n [%])	3 (37%)	11 (44%)	5 (71%)	6 (17%)	0.003 (3 vs 4)
Graft recipient weight ratio	1.11 (0.95–1.36)	0.88 (0.62–0.93)	0.81 (0.78–1.19)	0.99 (0.79–1.16)	0.015 (1 vs 2)

TRPG tricuspid regurgitation pressure gradient, mPAP-FIO₂0.6 mean pulmonary artery pressure measured after general anesthesia with FIO₂0.6, MELD model for end-stage liver disease, HPS hepato-pulmonary syndrome
p: Wilcoxon rank-sum test with Bonferroni’s correction