Which of the following is NOT a disorder of the gastrointestinal system?

The choice indicating a urinary tract infection is not classified under gastrointestinal disorders is correct. The urinary tract infection (UTI) primarily affects the urinary system, which includes the kidneys, ureters, bladder, and urethra. This condition is related specifically to the organs involved in the excretion and management of urine, distinguishing it from gastrointestinal disorders that focus on the organs involved in digestion and nutrient absorption.

On the other hand, colitis, hemorrhoids, and gastroesophageal reflux disease (GERD) are all associated with the gastrointestinal system. Colitis refers to inflammation of the colon, hemorrhoids are swollen veins in the lower rectum or anus that can result from straining during bowel movements, and GERD involves the backflow of stomach acids into the esophagus, causing symptoms related to the digestive tract. Understanding this distinction is crucial for identifying and differentiating various medical conditions and their appropriate management or treatment frameworks within nursing practice.