Haze, Gray, and Endoscopy Underway

Thomas Mellor, Diego A. Vicente, R. Daniel Lawson*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


Endoscopy is a critical skill set for deployment of surgical teams at sea on certain platforms. There are multiple emergent indications for endoscopy, most commonly esophageal food impactions and gastrointestinal bleeding; however, as a diagnostic modality endoscopy is also critical to rapidly triage and evaluate the deployed patient to maintain mission readiness. Additionally, endoscopy can be utilized as an adjunct during various surgical procedures. Familiarity with the endoscopic equipment and pathologies diagnosed and managed endoscopically are important for the deployed surgical team. This chapter reviews the endoscopic equipment including basic setup, risks of endoscopy, fundamentals of endoscopic technique, troubleshooting steps during the difficult procedure, and presentation, diagnosis, and endoscopic and medical management of the most commonly encountered gastrointestinal (GI) pathologies at sea.

Original languageEnglish
Title of host publicationExpeditionary Surgery at Sea
Subtitle of host publicationA Practical Approach
PublisherSpringer International Publishing
Number of pages53
ISBN (Electronic)9783031218934
ISBN (Print)9783031218927
StatePublished - 1 Jan 2023
Externally publishedYes


  • Colonoscopy
  • Common endoscopic findings
  • Duodenum
  • EGD
  • Endoscopic management of common diseases
  • Endoscopy equipment
  • Endoscopy technique
  • Esophagogastroduodenoscopy
  • Foregut obstructions
  • Gastrointestinal endoscopy
  • Gastrointestinal hemorrhage
  • Inflammatory bowel diseases
  • Maritime surgery
  • Surgery at sea


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