Does protein energy malnutrition affect the outcome in Tunisian cirrhotic patients?

BACKGROUND

Malnutrition is commonly seen in cirrhotic patients and has been shown to adversely affect outcome. However, it remains associated with the severity of cirrhosis. Therefore, its role as an independent prognostic factor is still under debate. The aims of our study were to determine the prevalence of malnutrition in cirrhotic patients and determine whether this condition was an independent prognostic factor.

PATIENTS AND

METHODS

We prospectively analyzed the nutritional status of 104 consecutive patients with cirrhosis Subjective global nutritional assessment (SGA) and anthropometry [dry body mass index (BMI), triceps skinfold (TSF), arm muscle circumference (AMC)] were used for the evaluation of the nutritional status. Complications of cirrhosis during follow-up and patient's survival were recorded. Global survival and survival without complications was studied by Kaplan Meier method and using Log Rank test.

RESULTS

Prevalence of malnutrition ranged from 16.3 and 62.5% according to the method of nutritional assessment used. Survival without complications was reduced in malnourished patients. This difference was significant when assessing malnutrition by dry BMI (p=0.001). In multivariate analysis, malnutrition defined by dry BMI<18.5 kg/m2 was an independent predictor of complications (p<0.001; RR 3.2) especially hepatic encephalopathy (p=0.001; RR 2.66). In univariate analysis, global survival was worse in malnourished patients (by BMI and SGA; p=0.03 and p=0.0014 respectively), but this trend was lost in multivariate analysis.

CONCLUSION

In our study, malnutrition was an independent predictor of complications in cirrhosis. However, it did not appear as an independent prognostic factor for global survival. These results raise again difficulties to clarify whether malnutrition influence itself the prognosis of cirrhosis or if it is only related to the severity of cirrhosis.