mrcem2-1147

A 14-month-old girl is brought to the Emergency Department by her father. For the past three days, she has been experiencing severe diarrhea. She has not had any wet diapers today and is lethargic and not behaving as usual. She was recently weighed by her pediatrician’s nurse and was 9 kg. During examination, she has dry mucous membranes and decreased skin elasticity, but her capillary refill time (CRT) is normal and her vital signs are within normal range.
What is her approximate fluid loss?