A patient arrives at the emergency department with reports of pain in the right upper quadrant of the abdomen after eating a high-fat meal.
The patient states that the pain radiates to her back.
No changes are noted on the electrocardiogram (ECG) and cardiac enzymes are normal.
The nurse suspects this patient is experiencing:
a myocardial infarction.
cholecystitis.
gastroesophageal reflux.
appendicitis.
The Correct Answer is B
Choice A rationale
Myocardial infarction involves ischemia and necrosis of the heart muscle, often presenting with chest pain that may radiate to the left arm or jaw. While epigastric pain can occur, the negative electrocardiogram and normal cardiac enzymes (such as Troponin I < 0.04 ng/mL) significantly lower the probability of a cardiac event. The specific trigger of a high-fat meal and radiation to the back is much more characteristic of gallbladder disease than coronary occlusion.
Choice B rationale
Cholecystitis is inflammation of the gallbladder, often caused by gallstones obstructing the cystic duct. High-fat meals trigger the release of cholecystokinin, which causes the gallbladder to contract to release bile. If obstructed, this contraction causes sharp pain in the right upper quadrant that frequently radiates to the right scapula or back. This classic presentation, combined with the lack of cardiac markers and the dietary trigger, strongly suggests the gallbladder is the source of the pain.
Choice C rationale
Gastroesophageal reflux occurs when stomach acid backs up into the esophagus, causing a burning sensation in the chest known as heartburn. While it is often triggered by eating, it typically causes retrosternal burning rather than sharp right upper quadrant pain that radiates to the back. Reflux does not usually present with the severity and specific radiation pattern seen in biliary colic or cholecystitis, making it a less likely primary diagnosis for this specific patient.
Choice D rationale
Appendicitis is the inflammation of the vermiform appendix, typically presenting with periumbilical pain that later localizes to the right lower quadrant at McBurney's point. While it can cause nausea and vomiting, the pain is not usually triggered specifically by high-fat meals, nor does it typically radiate to the back from the right upper quadrant. The anatomical location of the pain in this scenario is too high for a standard presentation of acute appendicitis.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale
Gastritis involves the inflammation, irritation, or erosion of the lining of the stomach. It can be acute or chronic and is often caused by H. pylori infection, excessive alcohol consumption, or the prolonged use of nonsteroidal anti-inflammatory drugs. While it involves inflammation of the digestive tract lining, it occurs in the stomach, not the colon, and does not involve the formation of small pouches or diverticula within the muscular layers of the organ.
Choice B rationale
Appendicitis is the inflammation of the appendix, a small finger-like projection located at the junction of the small and large intestines. While it is an inflammatory condition of the digestive tract, it is a localized infection of a specific anatomical structure. It does not involve the generalized formation of pouches throughout the colon lining. The symptoms are typically more acute and focused in the right lower quadrant of the abdomen rather than across the colon.
Choice C rationale
Ulcerative colitis is a type of inflammatory bowel disease that causes long-lasting inflammation and ulcers in the innermost lining of the large intestine and rectum. While it involves the colon, the pathology is characterized by continuous mucosal inflammation and shallow ulcerations rather than the herniation of the mucosa through the muscular wall to form pouches. The symptoms often include bloody diarrhea and tenesmus, which differ from the typical presentation of pouch inflammation.
Choice D rationale
Diverticulitis occurs when small, bulging pouches known as diverticula, which have formed in the lining of the digestive tract, become inflamed or infected. These pouches most commonly develop in the sigmoid colon where pressure is highest. When stool or bacteria become trapped in these pockets, it leads to the clinical syndrome of diverticulitis, characterized by left lower quadrant pain, fever, and changes in bowel habits. This matches the description of inflamed small pouches.
Correct Answer is B
Explanation
Choice A rationale
This term describes the presence of excess fat in the feces, which often results in stools that are bulky, foul-smelling, and oily. This condition is typically caused by malabsorption syndromes, such as celiac disease or cystic fibrosis, where the body cannot properly digest or absorb dietary fats. It has no physiological connection to the vomiting of blood and involves the lower digestive outcomes rather than an acute upper gastrointestinal emergency or vascular rupture.
Choice B rationale
This is the correct medical term for the vomiting of blood, which can appear as bright red or like coffee grounds depending on how long it has been in contact with gastric acid. Bright red blood indicates an active, brisk bleed in the upper gastrointestinal tract, such as from esophageal varices or a gastric ulcer. It is a critical clinical finding that requires immediate assessment of hemodynamic stability, as the patient is losing active blood volume.
Choice C rationale
This is a general term for inflammation of the stomach and intestines, commonly caused by viral or bacterial infections. While it can cause significant vomiting and diarrhea, the emesis is usually composed of food or bile rather than bright red blood. While severe irritation can occasionally lead to streaks of blood, the term itself refers to the inflammatory state of the gut lining and does not specifically define the clinical act of vomiting blood.
Choice D rationale
This term refers to the passage of black, tarry stools that result from the digestion of blood in the gastrointestinal tract. While it indicates a bleed, it describes the appearance of blood that has passed through the intestines and been oxidized by acid and bacteria. It is the result of upper gastrointestinal bleeding but is a finding associated with defecation, not the act of vomiting, making it the incorrect term for this specific patient complaint.
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