Renal, Urinary Systems 2

A 65-year-old man comes to the emergency department due to severe lower abdominal pain and nausea.  He also has not been able to urinate for the past 24 hours.  The patient has a history of hypertension and benign prostatic hyperplasia.  On examination, a large mass is palpable in the suprapubic area.  Multiple attempts at urethral catheterization are unsuccessful, and an ultrasound-guided midline suprapubic cystostomy is planned.  Besides the bladder wall, which of the following structures is most likely to be penetrated by the trocar and cannula during the procedure?

一位 65 岁男性因严重下腹疼痛和恶心来急诊，过去 24 小时无法排尿，有高血压和良性前列腺增生病史，检查时耻骨上区可触及一个大肿块，多次尝试尿道插管未成功，计划进行超声引导下中线耻骨上膀胱造瘘术，问除膀胱壁外，在该过程中哪个结构最有可能被套管针和套管穿透。

Anterior abdominal aponeurosis

膀胱在腹膜外。在放置耻骨上膀胱造口术时，套管针和套管会刺穿腹壁层，但不会进入腹膜。