Gastrointestinal System Nursing Exam Questions

Correct Answer: A

Rationale: As the nasogastric tube is passed through the oropharynx, the gag reflex is stimulated, which may cause coughing, gagging, or choking. Instead of passing through to the esophagus, the nasogastric tube may coil around itself in the oropharynx, or it may enter the larynx and obstruct the airway, pulling the tube back slightly will remove it from the larynx; advancing the tube might position it in the trachea. Swallowing closes the epiglottis over the trachea and helps move the tube into the esophagus. Slow breathing helps the client relax to reduce the gag response. The nurse should check the back of the client's throat to note if the tube has coiled. The tube may be advanced after the client relaxes.

Correct Answer: C

Rationale: The client should limit fat in the diet. The client also should take in small meals, which also will reduce the amount of carbohydrates and protein that the client must digest at any one time. The client does not need to limit water-soluble vitamins in the diet.

Correct Answer: C

Rationale: Hematocrit is the best indicator of hydration status because it reflects the proportion of red blood cells in the blood. An increased hematocrit indicates dehydration, as the blood becomes more concentrated due to fluid loss. Erythrocyte sedimentation rate (Choice A) is a nonspecific marker of inflammation, not hydration status. White blood cell count (Choice B) is an indicator of infection or inflammation. Serum glucose (Choice D) is used to monitor blood sugar levels, not hydration status.

Correct Answer: A

Rationale: Because celiac disease destroys the absorbing surface of the intestine, fat isn't absorbed but is passed in the stool. Steatorrhea is bulky, fatty stools that have a foul odor. Jaundiced sclerae result from elevated bilirubin levels. Clay-colored stools are seen with biliary disease when bile flow is blocked. Celiac disease doesn't cause a widened pulse pressure.

Correct Answer: A

Rationale: A lack of intrinsic factor needed to absorb vitamin B12 occurs in pernicious anemia. Vitamin B12 is needed for the maturation of red blood cells. Vitamin B6 is not necessarily needed for pernicious anemia and can be taken orally. An antibiotic and antacids may be prescribed for certain types of gastric ulcers.