In this edition of the clinical and epidemiological round, we analyze four articles relevant for clinical practice, namely: the adverse effects of some antimicrobials are studied by Etminan et al., looking for a possible association between the use of oral fluoroquinolones and the risk of peripheral neuropathy (1). Fralick et al., studied the risk of sudden death after the use of trimethoprim sulfamethoxazole (2). Bakker and collaborators make an interesting contribution about the need of nasoyeyunal catheter in patients suffering from acute pancreatitis (3). Finally, Kanegaye et al., look for the best diagnostic test for urinary infections in infants (4).