<prompt> 16 F foleys is used in -Acute urinary retentionCA penisPyonephrosisNone  <response>: Ans. is a i.e., Acute urinary retention Catheterization is mandatory for acute urinary retention. Spontaneous voiding may return, but a catheter should be left indwelling for 3 days while detrusor tone returns.- CSDT 13e 16F and 18F foleys are mainly used for adults 8F and 10F are mainly used for children Acute urinary retention is an indication for catheterization 