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 23 February 2018

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News

Weight loss recommended for patients awaiting liver transplantation

A study published in January's Hepatology has recommended that all patients awaiting a liver transplantation should lose weight, especially if their BMI is greater than 35 kg/m2.

News image

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Researchers from Los Angeles and Maryland, USA, investigated the effect of obesity on survival in patients undergoing liver transplantation.

They determined the graft and patient survival in obese adults receiving orthotopic liver transplantation (OLT) in the US between 1988 through 1996, using the United Network for Organ Sharing (UNOS) database.

Among the 23,675 transplantations performed during the 9-year study period, 18,172 (75%) patients fulfilled the inclusion criteria.

Of these, 8382 (46%) were not obese (body mass index [BMI] < 25 kg/m2), 5913 (33%) were overweight (BMI, 25.1-30 kg/m2), 2611 (14%) were obese (BMI, 30.1-35 kg/m2), 911 (5%) were severely obese (BMI, 35.1-40 kg/m2), and 355 (2%) were morbidly obese (BMI, 40.1-50 kg/m2).

The outcome measures assessed were immediate (30-day), 1-, 2-, and 5-year patient survival.

Primary graft nonfunction and mortality were higher among obese transplant patients.
Hepatology

The team found that obese groups had a higher proportion of women, a greater prevalence of cryptogenic cirrhosis and diabetes, and a higher serum creatinine.

Primary graft nonfunction, and immediate, 1-year, and 2-year mortality were significantly higher in the morbidly obese group.

It was also found that 5-year mortality was significantly higher both in the severely and morbidly obese subjects, mostly as a result of adverse cardiovascular events.

Furthermore, Kaplan-Meier survival was significantly lower in morbidly obese patients, and morbid obesity was an independent predictor of mortality.

Satheesh Nair, of the Ochsner Clinic, New Orleans, Los Angeles, said on behalf of fellow authors, "Obesity is associated with a significant increase in long-term mortality, mostly as a result of cardiovascular events."

"Weight loss should be recommended for all patients awaiting a liver transplantation, especially if their BMI is more than 35 kg/m2," it was concluded.

Hepatology 2002; 35: 105-9
14 January 2002

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