skip to main content

Interdialytic Weight Gain — ESENeph MCQ

Instant feedback + full explanation. One question, done properly.

EasyHaemodialysisInterdialytic Weight GainESENeph

A 55-year-old man with CKD G5D on haemodialysis is reviewed in clinic. His interdialytic weight gain is consistently 4-5 kg between sessions (3 times per week). This corresponds to approximately 5-7% of his dry weight. What advice should be given?

Educational content. Not a substitute for clinical judgement or local policy.

Reveal the answer and explanation

Correct answer: B — Interdialytic weight gain should ideally be limited to <2.5 kg or <4% of dry weight; excessive gain increases cardiovascular mortality, pulmonary oedema risk, and intradialytic hypotension from high UF rates

Excessive interdialytic weight gain (IDWG) is associated with increased cardiovascular mortality, left ventricular hypertrophy, pulmonary oedema, and intradialytic hypotension (from required high ultrafiltration rates). KDOQI recommends limiting IDWG to <2.5 kg or <4% of dry weight between sessions. Management includes dietary sodium restriction (the primary driver of thirst and fluid intake), individualised fluid restriction, and patient education. More frequent or longer dialysis sessions are an option for patients unable to limit IDWG.

Reference: KDOQI 2015 – HD Adequacy; ERA-EDTA 2019 – Fluid Management