SAM classification — DTM&H MCQ

Correct answer: E — Severe acute malnutrition with medical complications

The correct answer is E, severe acute malnutrition with medical complications. This child has bilateral (symmetrical) oedema, which alone confirms SAM regardless of MUAC, and the MUAC of 105 mm (below the 115 mm SAM cut-off) reinforces this diagnosis. Crucially, the presence of danger signs and additional systemic features, irritability, abdominal distension with visible peristalsis (suggesting gut compromise), and the flag sign of hair depigmentation (kwashiorkor-type severe protein-energy deficiency), mean this is not an uncomplicated case. Current WHO guidance states that children with SAM who have medical complications, severe oedema, poor appetite or IMCI danger signs should be treated as inpatients with F-75 stabilisation before transitioning to therapeutic feeding, rather than managed as outpatients. Why the other options are wrong: B. Moderate acute malnutrition: MUAC of 105 mm falls well below the SAM threshold of 115 mm, and oedema by definition upgrades any case to severe malnutrition irrespective of anthropometry. C. Overweight with oedema: The clinical picture (wasting, oedema, hair changes, irritability) is one of severe undernutrition, not excess adiposity; there is no supporting evidence of overweight. A. Severe acute malnutrition without complications: This would apply only if the child passed the appetite test with no danger signs; here, irritability, abdominal distension with visible peristalsis, and marked hair depigmentation indicate systemic complications requiring inpatient stabilisation. D. Chronic malnutrition (stunting): Stunting reflects long-term linear growth faltering (low height-for-age) and is not diagnosed from oedema, MUAC or acute clinical signs as described here. Key point: Bilateral oedema plus danger signs or systemic complications (not MUAC alone) is what distinguishes complicated from uncomplicated severe acute malnutrition and mandates inpatient F-75 stabilisation.

Reference: WHO, Guideline: Updates on the Management of Severe Acute Malnutrition in Infants and Children (2013, reaffirmed in WHO 2023 Guideline on prevention and management of wasting and nutritional oedema): children with SAM who have medical complications, severe oedema, poor appetite or IMCI danger signs should be treated as inpatients. https://www.ncbi.nlm.nih.gov/books/NBK190317/