Tissue Retraction & Exposure Flashcards

During cardiac surgery requiring sternal retraction, the first assistant should be alert for which specific complication caused by excessive retraction force?

Answer: Brachial plexus injury from rib spreading

Excessive spreading of the sternal retractor can stretch the brachial plexus, particularly the lower trunk, causing postoperative upper extremity weakness or numbness.

The first assistant is using an S-retractor to expose the gallbladder fossa. The most appropriate depth of blade insertion is:

Answer: Just superficial to the peritoneum

S-retractor blades should be positioned just deep to the peritoneum to achieve exposure without compressing underlying viscera or the liver parenchyma.

When the operative field is obscured by excessive bleeding during retraction, the first assistant's first response should be to:

Answer: Notify the surgeon and apply gentle pressure with a sponge

Notifying the surgeon and applying gentle sponge pressure controls bleeding without worsening tissue trauma or losing established exposure.

A laparoscopic trocar-based retractor system requires the first assistant to maintain constant counter-pressure. This is MOST important to prevent:

Answer: Retractor-related visceral perforation from sudden movement

Without counter-pressure, sudden patient movement or instrument slippage can cause the retractor tip to perforate adjacent viscera.

The O'Sullivan-O'Connor retractor is specifically designed for use in which surgical specialty?

Answer: Gynecologic and pelvic surgery

The O'Sullivan-O'Connor retractor is a self-retaining pelvic retractor widely used in gynecologic and pelvic procedures to maintain vaginal or abdominal exposure.

When retracting the sigmoid colon during colorectal surgery, the first assistant should avoid pulling directly on the mesentery because:

Answer: It can tear mesenteric vessels and devascularize the bowel segment

Direct traction on the mesentery risks avulsing its vessels, resulting in segmental bowel devascularization that may not be immediately apparent.

A first assistant notes that a self-retaining retractor ratchet has disengaged mid-procedure. The correct immediate action is to:

Answer: Ask the scrub tech to hand off a replacement while maintaining the current retractor in place by hand

Manually holding the retractor maintains exposure and surgical progress while a replacement is retrieved, preventing loss of the operative field.