Intraoperative Procedures and Techniques Flashcards

During a mastectomy with sentinel lymph node biopsy, the blue-stained lymph node is identified but appears to be in close proximity to the axillary vein. What is the first assistant's primary responsibility at this moment?

Answer: Provide meticulous retraction and clear visualization to protect the vein during dissection

The first assistant's primary role is to provide optimal retraction and exposure so the surgeon can safely dissect the sentinel node away from the axillary vein.

What does the term 'cystotomy' refer to in the context of intraoperative technique?

Answer: Incision into the urinary bladder or cystic structure

Cystotomy is the surgical incision into the bladder or any cystic structure, commonly performed for stone removal or intravesical procedures.

During a laparoscopic appendectomy, the surgical first assistant is using an endoscopic stapler to divide the mesoappendix. The stapler fires but the tissue appears inadequately transected. What is the correct next step?

Answer: Notify the surgeon and evaluate the staple line before proceeding

A misfire or incomplete staple line requires stopping to assess the situation with the surgeon before any further action to prevent hemorrhage or incomplete division.

When assisting during an open inguinal hernia repair using the Lichtenstein tension-free mesh technique, the mesh is anchored along the inguinal ligament using which suture material?

Answer: Monofilament permanent or slowly absorbable suture

Permanent or slowly absorbable monofilament suture secures the mesh to the inguinal ligament to ensure durable fixation without long-term foreign body braided suture issues.

A patient undergoing a total knee arthroplasty has a tourniquet applied to the upper thigh. The surgical first assistant is asked to set the tourniquet pressure. What is the standard recommended tourniquet pressure for a lower extremity procedure?

Answer: 100–150 mmHg above systolic blood pressure

Tourniquet pressure for the lower extremity is typically set 100–150 mmHg above systolic pressure to ensure arterial occlusion while minimizing tissue damage.

During a right hemicolectomy, the ileocolic artery is divided. Which structure must the surgical first assistant be careful to avoid injuring during retroperitoneal dissection at this step?

Answer: Right ureter as it crosses over the iliac vessels

The right ureter runs retroperitoneally and crosses over the right iliac vessels; it is at risk during right colectomy mesenteric dissection.

When assisting with a free tissue transfer (free flap), the most critical intraoperative parameter the surgical first assistant should help maintain throughout the microsurgical anastomosis is:

Answer: Adequate systemic perfusion pressure and avoidance of vasopressors

Adequate perfusion pressure without vasoconstrictors is essential for free flap survival; vasopressors can cause anastomotic spasm and flap failure.