If weight and height cannot be obtained, use clinical surrogates: visible muscle wasting, skin-fold assessment, or subjective clinical impression. NRS-2002 is designed to be adapted to real-world clinical constraints.

NRS-2002 was primarily validated for hospitalised adults. For community or outpatient settings, MUST or MNA-SF may be more appropriate, though NRS-2002 can still provide useful risk stratification.

Clinicians must adjust interpretation when fluid retention is present. A patient with gross oedema may have significant lean tissue loss despite normal or elevated body weight; use clinical signs to adjust the nutritional status score.

MUST uses BMI, weight-loss percentage, and an acute disease effect score; it is more commonly used in community and general hospital settings. NRS-2002 explicitly scores disease severity on a 0–3 scale and adds an age adjustment, making it more sensitive for acutely ill hospitalised patients.

Yes. ESPEN guidelines recommend weekly rescreening for patients who initially score below 3. Clinical deterioration, new diagnoses, or prolonged hospitalisation can raise nutritional risk significantly.