<prompt> Severe acute malnutrition as per who criteria is ___Weight for height less than median 2 SDWeight for age less than median - 2 SDWeight for age less than median 3 SDWeight for height less than median - 3 SD  <response>: Definition of severe acute malnutrition - severe wasting andor bilateral edema. Severe wasting is weight for length or height that is below -3SD of the WHO Child Growth Standards. Diagnosis of bilateral edema - by grasping both feet, placing a thumb on top of each, and pressing gently but firmly for 10 seconds. A pit that stays under each thumb denotes bilateral edema. Management of SAM:- Ref:- Nelson 20th edition; pg num:- 301,302 