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Interdialytic weight gain: implications in hemodialysis patients
Shubho R Sarkar1, Peter Kotanko, Nathan W Levin
1Renal Research Institute and Beth Israel Medical Center, New York, New York 10128, USA.
Seminars in Dialysis
|September 15, 2006
Summary
Interdialytic weight gain (IDWG) can indicate nutritional status, not just fluid overload. Lower IDWG may reflect better nutritional intake, suggesting less strict fluid restriction is needed.
Area of Science:
- Nephrology
- Clinical Nutrition
Background:
- Interdialytic weight gain (IDWG) is routinely measured in dialysis patients.
- It informs fluid removal decisions and dietary recommendations.
Observation:
- IDWG is also a nutritional indicator.
- Few studies directly link IDWG to morbidity and mortality.
- Confounding factors include residual renal function and comorbidities.
Findings:
- Restricting fluid and salt solely based on IDWG may be inappropriate.
- Lower IDWG values (less than 5.7% of dry weight) might indicate better nutritional status.
- These lower values may reflect higher protein and calorie intake.
Implications:
- Rethinking strict fluid and salt restriction based solely on IDWG is necessary.
- Lower IDWG may not warrant tighter dietary control.
- Focusing on nutritional status alongside IDWG is crucial for patient management.
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