system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
16F circumference of a catheter means
assistant
The correct answer is  Ans. a (4.8 mm). (Ref. B & L, Surgery, 23rd ed., 1262)3.12 SF = 1mm, hence a 16F Circumference of catheter means (r)