5.3 Scenario Practice for Gastrointestinal Disorders
Key Takeaways
- Appendicitis classically migrates from periumbilical to RLQ pain with anorexia, nausea, and McBurney point tenderness; rupture relieves pain briefly, then peritonitis develops.
- Acute pancreatitis presents with epigastric pain radiating to the back; diagnosis requires lipase elevated more than three times normal, and Cullen/Grey Turner signs indicate hemorrhagic disease.
- Cholecystitis presents with RUQ pain, a positive Murphy sign, and fever; right scapular radiation and fatty-food triggers are classic.
- Bowel obstruction causes colicky pain, distension, vomiting, and obstipation; high obstructions vomit early, low obstructions distend more and may have feculent vomiting.
- Pancreatitis nursing care centers on aggressive fluid resuscitation, pain control, and watching for hypocalcemia, hyperglycemia, and ARDS.
Appendicitis and Cholecystitis
Acute appendicitis is the classic surgical abdomen. Pain begins periumbilical (visceral) and migrates to the right lower quadrant (somatic) over 12-24 hours, accompanied by anorexia, nausea, and low-grade fever. The Alvarado (MANTRELS) score captures the tested features: Migration, Anorexia, Nausea, Tenderness RLQ, Rebound, Elevated temperature, Leukocytosis, and left Shift. Examine for McBurney point tenderness, Rovsing, psoas, and obturator signs. A retrocecal appendix gives a positive psoas sign; a pelvic appendix gives a positive obturator sign.
A critical exam trap: sudden relief of pain followed by diffuse pain, rigidity, and rising fever signals perforation, not improvement.
Acute cholecystitis is RUQ pain, often after a fatty meal, with fever and a positive Murphy sign (inspiratory arrest when the examiner palpates the RUQ). Pain may radiate to the right scapula/shoulder. Ultrasound shows gallstones, wall thickening, and pericholecystic fluid. Watch for ascending cholangitis — Charcot triad of fever, RUQ pain, and jaundice — which is a sepsis emergency requiring antibiotics and biliary decompression.
Acute Pancreatitis
Acute pancreatitis presents with severe, steady epigastric pain radiating straight through to the back, often relieved by leaning forward and worsened by lying flat. The leading causes are gallstones and alcohol. Diagnosis requires two of three: characteristic pain, lipase (or amylase) elevated more than three times the upper limit of normal, and imaging findings. Lipase is more specific and stays elevated longer than amylase. Two skin signs indicate hemorrhagic pancreatitis and a worse prognosis: Cullen sign (periumbilical ecchymosis) and Grey Turner sign (flank ecchymosis).
Severity is graded with Ranson criteria or APACHE II; a Ranson score of 3 or more predicts a complicated course. Nursing priorities:
- Aggressive isotonic fluid resuscitation — third-spacing causes large volume deficits and hypotension.
- Pain control with opioids and antiemetics; keep the patient NPO initially to rest the pancreas.
- Monitor for hypocalcemia (check Chvostek/Trousseau signs), hyperglycemia, hypovolemic shock, and acute respiratory distress syndrome (ARDS).
- Anticipate electrolyte replacement, possible insulin, and ICU admission for severe disease.
Bowel Obstruction
Bowel obstruction blocks the forward flow of intestinal contents and is small-bowel (most common; adhesions, hernias, tumors) or large-bowel (cancer, volvulus, diverticular stricture). The cardinal features are colicky abdominal pain, distension, vomiting, and obstipation (no passage of stool or flatus). Location predicts the picture:
| Feature | High (proximal small bowel) | Low (distal/large bowel) |
|---|---|---|
| Vomiting | Early, bilious, profuse | Late, may be feculent |
| Distension | Minimal | Marked |
| Bowel sounds | Early high-pitched/tinkling, later absent | Variable |
| Imaging | Air-fluid levels, dilated loops | Dilated colon, possible volvulus |
Nursing care: keep the patient NPO, place a nasogastric tube to low intermittent suction for decompression, give isotonic IV fluids, and replace electrolytes (vomiting drives hypokalemia and metabolic alkalosis). The exam emphasizes recognizing a strangulated obstruction — fever, tachycardia, peritoneal signs, rising lactate, and severe constant (not colicky) pain — which signals ischemia and the need for emergent surgery.
Special Populations and Severity Markers
The scenario stem often hides the answer in who the patient is. Pediatric and pregnant patients with appendicitis present atypically and perforate faster; in pregnancy the appendix is displaced upward, so RLQ tenderness may instead be midabdominal or right upper quadrant. Young children cannot localize pain and may show only irritability, anorexia, and vomiting, so a high suspicion is required. Older adults with appendicitis perforate sooner because of delayed presentation and blunted signs.
In pancreatitis, the nurse watches for systemic deterioration: a Ranson score of 3 or more, persistent hypotension despite fluids, falling urine output, hypoxia signaling ARDS, and signs of hypocalcemia such as perioral numbness or a positive Trousseau sign. Gallstone pancreatitis with obstruction may need ERCP for biliary decompression.
Connecting Cue to Action
The payoff in every scenario question is matching the dominant cue to the correct first action.
- Migratory RLQ pain + anorexia → appendicitis → surgical consult, NPO, watch for rupture.
- Epigastric pain to the back + lipase >3x normal → pancreatitis → aggressive fluids and pain control.
- RUQ pain + Murphy sign after a fatty meal → cholecystitis → antibiotics, NPO, surgery.
- Colicky pain + distension + obstipation → obstruction → NPO, NG suction, fluids.
When two answers look reasonable, choose the one that fits the timing and the role of the emergency nurse — recognizing the emergency and initiating the right priority intervention — rather than the one that simply names a plausible diagnosis. The exam rewards the action that prevents the next, worse complication.
Reading the stem methodically
Work each scenario in a fixed order so a single salient word does not pull you to the wrong answer. First identify the patient and risk factors (age, pregnancy, comorbidities, alcohol use, gallstones). Second, pin the pain pattern and location. Third, find the confirming sign or lab the stem provides. Fourth, ask what stage the process is in — early and stable, or decompensating toward perforation, strangulation, or shock. Only then choose the action. When two options remain, eliminate the one that delays care or treats a less acute problem, and select the intervention an emergency nurse can and should initiate now.
This disciplined read is what separates a confident pass from second-guessing between two plausible distractors.
A patient with several hours of RLQ pain that began near the umbilicus suddenly reports the pain has nearly vanished, then develops diffuse abdominal pain, rigidity, and a rising fever. How should the nurse interpret this change?
Which laboratory finding best supports a diagnosis of acute pancreatitis?
A patient with a small-bowel obstruction has copious bilious vomiting, high-pitched bowel sounds, and air-fluid levels on imaging. Which intervention set is most appropriate?
A patient presents with right upper quadrant pain after a fatty meal, a fever, and inspiratory arrest when the examiner palpates beneath the right costal margin. This positive sign is most consistent with which condition?