Which of the following is a contraindication to the use of a Combitube?

• A. Under 5 feet tall
• B. Over 7 feet tall
• C. Under 16 years old
• D. Esophageal diseases

Answer: (D)

The key concept is that certain medical conditions make the Combitube unsafe to use. This device is inserted blindly to seal both the esophagus and the trachea, relying on cuffs to create a secure airway. If there is esophageal disease—such as strictures, trauma, tumors, or recent surgery—the tissues are often fragile or abnormal. Inserting a device that expands cuffs and sits in or near diseased esophagus can cause perforation, injury, or improper placement, which increases the risk of airway compromise and aspiration. For that reason, esophageal diseases are a contraindication to using a Combitube, and another airway method should be chosen instead. Height and age alone don’t contraindicate its use, and while pediatric considerations matter, they aren’t absolute contraindications in the same way esophageal pathology is.