Acquired Bartter-like syndrome (BLS), characterized by hypokalemic metabolic 
alkalosis, hypomagnesemia, hypocalcemia, and normal kidney function, can be 
induced by diuretics or antibiotics. It is a very rare condition and only 
anecdotal cases mostly in adults were reported. Although tubulopathy associated 
with colistin was reported in adults, to the best of our knowledge, 
colistin-associated BLS neither in adults nor in children has been reported in 
the literature. We here report a-28-week, 740 g female preterm infant who 
developed BLS just after colistin treatment for Acinetobacter baumannii 
infection and recovered few days after the drug cessation, and discuss the 
possible association of colistin and tubulopathy. More research on colistin 
pharmacokinetics and pharmacodynamics in critically ill patients and preterm 
infants is needed to guide adequate colistin dosing at the least toxicity.