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Background  People diagnosed with intestinal failure ( IF ) as a result of short bowel syndrome are dependent on home parenteral nutrition ( HPN ). Measuring nutritional status is essential for monitoring treatment.  The present study aimed to determine the agreement and feasibility of three methods bioelectrical impedance analysis ( BIA ), ultrasound and air displacement plethysmography ( ADP ) for measuring body composition in people receiving  HPN .    Methods  Body composition data were collected from patients attending an  IF  clinic.    Results  There were 50 participants recruited and data were collected for  BIA  ( n  =   46), ultrasound ( n  =   49) and  ADP  ( n  =   9). Numbers for  ADP  were much lower because of a lack of participant uptake. Fat‐free mass ( FFM ) measured by  BIA  and ultrasound in comparison to  ADP  was found to have good intraclass correlation ( ICC ) 0.791 (95% confidence interval (CI)  CI   −0.21 to 0.96) and a moderate  ICC  0.659 [95% ( CI)  −0.27 to 0.92], respectively. Fat mass ( FM ) measured by both  BIA  and ultrasound in comparison to  ADP  was found to have moderate  ICC  0.660 (95%  CI  −0.28 to 0.92) and poor  ICC  −0.005 (95%  CI  −0.73 to 0.65), respectively.    Conclusions  Compared to  ADP ,  BIA  indicated moderate to good agreement for measuring body composition, whereas ultrasound indicated far less agreement, particularly when measuring  FM . The lack of uptake of  ADP  suggests that participants found the Bodpod (COSMED Srl, Shepperton, UK) unfavourable. Considering that ultrasound has limited agreement and  ADP  was not the preferred option for participants,  BIA  shows some potential. However, the difference between  ADP  and  BIA  was larger for  FM  compared to  FFM , which needs to be considered in the clinical setting.

journal of human nutrition and dietetics

Practical measurement of body composition using bioelectrical impedance, air displacement plethysmography and ultrasound in stable outpatients with short bowel syndrome receiving home parenteral nutrition: comparison of agreement between the methods