Chapter·SurgeryMinimally Invasive Surgery

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1

A 32-year-old woman undergoes laparoscopic excision of ovarian endometrioma. During surgery with the patient in Trendelenburg position and pneumoperitoneum at 15 mmHg, the anesthesiologist notes peak airway pressures rising from 25 to 40 cmH2O, oxygen saturation dropping to 88%, and blood pressure decreasing. Apply the appropriate immediate intervention.

AIncrease tidal volume and respiratory rate

BIncrease FiO2 and administer fluid bolus only

CRelease pneumoperitoneum and decrease Trendelenburg

DAdminister bronchodilators for bronchospasm

ECheck for endobronchial intubation and reposition tube

2

A 65-year-old man with locally advanced rectal cancer 6 cm from the anal verge completes neoadjuvant chemoradiation with good response. MRI shows tumor downsizing to 3 cm with no nodal involvement. The patient strongly prefers sphincter preservation. The surgeon can perform either open low anterior resection or robotic-assisted total mesorectal excision. Evaluate the optimal approach considering oncologic and functional outcomes.

AOpen low anterior resection for better tactile feedback

BAbdominoperineal resection for oncologic safety

CTransanal endoscopic microsurgery for organ preservation

DRobotic-assisted TME for improved visualization in pelvis

EWatch and wait approach given excellent response

3

A 50-year-old man with morbid obesity (BMI 48) undergoes laparoscopic sleeve gastrectomy. On postoperative day 5, he develops tachycardia, oliguria, and confusion. CT shows a small fluid collection along the staple line. Drain output is minimal. He is started on antibiotics. Twenty-four hours later, he remains tachycardic with rising lactate despite fluids. Evaluate the management priority.

AUrgent laparoscopic exploration with drainage

BIncrease antibiotic coverage and vasopressor support

CContinue antibiotics and obtain interventional radiology drainage

DEndoscopic stent placement across the leak

EImmediate open exploration, washout, and feeding jejunostomy

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