“Weighing the risk”: Obesity and outcomes following liver transplantation

Table 1 Outcomes following liver transplantation in obese patients (2000-present)

Ref.	Patients (n)	Classification (BMI)	LOS	Perioperative complication rate	Graft survival	Patient survival
Nair et al[31]	121	NW vs OB (27.8-31.1 M and 27.3-32.3 F) MO (> 31.1 M and > 32.3 F)	In MO	In MO	NA	NoD
Nair et al[45] (UNOS data)	18172	NW vs SO (35.1-40) MO (> 40)	NA	NA	NoD (1 and 2 yr)	In SO (5 yr) In MO (1, 2 and 5 yr)
Dare et al[35]	202	NO (< 30) vs OB (≥ 30)	In OB	In OB	NA	NoD
Tanaka et al[38]	507	cBMI ( ≤ 40 vs 40)	In MO	NA	In MO	In MO
		mBMI ( ≤ 40 vs 40)	ND		NoD	NoD
Hakeem et al[37]	1325	NW vs OW (25-29.9), OB (30-34.9) MO (≥ 35)	In OW and OB	In OW and OB	NoD	NoD
Dick et al[51] (UNOS data)	73538	NW vs MO (≥ 40)	In MO	In MO	NA	In MO
Perez-Protto et al[50]	230	NW vs OB (≥ 38)	NoD	NoD	NoD	NoD
Fujikawa et al[85]	700	NW vs OW (25-29.9) OB (≥ 30)	NoD	NoD	NoD	NoD
Hillingsø et al[52]	365	NW vs OB (> 30)	NoD	NoD	NA	In OB
Conzen et al[53]	785	NW vs MO (≥ 40)	NoD	NoD	NoD (at 3 yr)	NoD (at 3 yr)
					In MO (at 5 yr)	In MO (at 5 yr)
Werneck et al[39]	136	NW vs OW (25-29.9) OB (≥ 30)	NoD	NoD	NoD	NoD
Nair et al[40]	193	NW vs MO (≥ 40)	In MO	NA	NA	NoD
Singhal et al[49] (SRTR)	12445	NW vs MO (≥ 40)	In MO	NA	NoD	NoD
Schaeffer et al[86]	167	NW vs OB (> 35)	NA	In OB	NoD (at 1 yr)	NoD (at 1 yr)
Orci et al[48] (SRTR)	38194 (4138 > 5 yr)	NW vs OB (> 35)	NA	NA	NA	NoD (> 5 yr)

NA: Not available; NoD: No difference; NO: Non-obese; OW: Overweight; OB: Obese; SO: Severely obese; MO: Morbidly obese; BMI: Body mass index; NW: Normal weight; LOS: Length of stay; cBMI: Calculated BMI; mBMI: Modified BMI.