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NCLEX-RN cheat sheet · Gastrointestinal

Lower GI, gallbladder and pancreas

IBD, diverticulitis, obstruction and NG tubes, appendicitis, ostomies, cholecystitis, pancreatitis

AI-checkedChecked by AI against current guidelines, with spot-checks by a registered nurse.

Lower GI problems range from colitis flares to a ruptured appendix, and many clients go home with a stoma. The gallbladder and pancreas both help digest fat, and both can flare with severe, sudden belly pain.

At a glance

Ulcerative colitis or Crohn's disease

Ulcerative colitisCrohn's disease
WhereColon onlyAnywhere in the gut
PatternSpreads evenly up from the rectumJumps, with skip lesions
StoolBloody diarrhea with mucusDiarrhea, usually not bloody
PainOften on the leftRight lower belly
AlsoRemoving the colon can cure the bowel symptomsWeight loss, fistulas, abscesses and narrowing

Both: Fever, a fast heart rate and dehydration; both flare and settle. Diarrhea drains potassium and magnesium; blood loss causes anemia. Drugs are individualized: mesalamine for selected colitis, not Crohn's, plus steroids, immune modifiers and biologics. Many raise the risk of infection.

IBD nursing care

  • Track intake and output, stools, daily weight, potassium and magnesium.
  • Fever, a rising pulse, more pain or a rising white count can mean perforation.
  • Severe flare: IV fluids or parenteral nutrition may be needed.
  • In a flare, avoid dairy, caffeine, alcohol, and high-fat and high-fiber foods.
  • Teach: no anti-inflammatory pain relievers; regular colonoscopies for cancer risk.

Diverticulitis

  • Pouches where the colon wall is weak. Often silent, but they can bleed.
  • Inflamed: left lower belly pain, fever, nausea, a high white count.
  • A CT scan confirms it. Colonoscopy waits 6 to 8 weeks: it could perforate the colon.
  • Bowel rest, fluids, antibiotics, pain control: NPO in hospital, clear liquids at home.
  • No fiber during the flare; once it settles, a high-fiber diet helps prevent more pouches.

Bowel obstruction

  • Contents back up; the bowel swells and leaks fluid: dehydration, electrolyte loss and, if blood flow fails, perforation.
  • Pain, distension, vomiting that may smell like stool. No gas, and no stool or only liquid stool.
  • Bowel sounds may be loud early, then quiet or absent later.
  • Potassium falls with vomiting. A high white count or lactic acid suggests necrosis or perforation.
  • NPO, IV fluids, electrolytes, walking, fewer opioids. Some need surgery, which may create a stoma.
  • Signs of improvement: bowel sounds return and the client passes gas.

NG decompression (Salem sump)

  • Decompresses the stomach, prevents vomiting and measures the output.
  • Large double-lumen tube; drains by gravity or suction, as ordered.
  • The blue pigtail is the vent: never instill anything through it.
  • Check placement before using the tube. Document drainage amount and color every shift.
  • Turn the suction off before listening for bowel sounds.
  • Suction drains sodium, potassium and magnesium: watch the labs. Frequent mouth care; check the skin where the tube rests.

Appendicitis or peritonitis

AppendicitisPeritonitis
CauseAppendix blocked, often by hardened stool, and it swellsInflamed belly lining: perforation, rupture, or infection after surgery
PainStarts all over, then moves to the right lower belly; rebound tendernessVery tender, worse with movement; may feel firm, like a board
Other signsLoss of appetite, nausea and vomiting, feverFever, chills, a racing heart, nausea; little gas, stool or urine; curls up and guards the belly
CareCT preferred (ultrasound for children and in pregnancy). Surgery; until then, NPO, IV fluids, antibioticsAn emergency: surgery, antibiotics, or both

Before appendectomy: Urgent evaluation comes first: comfort measures like ice must not delay care, and heat is avoided. No enemas or laxatives. Rupture risk rises sharply 24 to 36 hours after symptoms start: report a change in pain or vital signs.

Ostomy care

Care and teaching
ColostomyColon through the belly wall, usually on the left; soft stool. Temporary (reconnected after about 12 weeks) or permanent
IleostomyEnd of the small intestine; watery output, so dehydration comes easily
Healthy stomaPink or red, moist, a little shiny. Swollen after surgery, shrinks over weeks; may bleed a little when cleaned
ReportStoma turns purple, black or white, or pulls in below the skin. Frequent leaks, raw skin, foul discharge, bulging around it
PouchEmpty at one third to one half full. Change per the system, the skin and the ostomy nurse's plan; at once for itching or leaks
Skin and fitMild soap and water, pat dry; no alcohol or oily products. Size the opening close to the stoma, not touching it
Ileostomy teachingFollow the prescribed fluid plan; monitor urine and output; oral rehydration when indicated. Chew well: nuts, seeds, popcorn, corn and raw pineapple can block the stoma

Gallbladder or pancreas?

CholecystitisAcute pancreatitis
PainRight upper belly, sometimes into the back or shoulder; trouble with fatty foodUpper middle (epigastric), often into the back
Key findingUltrasound shows stones. Murphy's sign: the breath stops short as the right upper belly is pressedHigh lipase and amylase
CausesGallstonesGallstones and heavy alcohol use
TreatmentMost need removal, usually by laparoscopy. Selected duct stones may come out first by ERCPMonitored IV fluids, pain relief and early feeding, not prolonged NPO

After gallbladder surgery

  • Low-fat diet before and soon after surgery.
  • Right shoulder pain after laparoscopy is common, from the gas. Walking helps; it eases within 2 to 3 days.
  • Report jaundice: yellow eyes, light stools or dark urine can mean a stone was left behind.

Pancreatitis

  • Mild: low-fat solid food usually within 24 to 48 hours, in small, frequent meals. Can't eat: nutrition by tube.
  • Chronic: greasy, foul-smelling stools and weight loss; diabetes can develop. Give enzyme pills and vitamins A, D, E and K.
  • Teach every client to stop alcohol completely, even after a mild attack, and to stop smoking.

Priority and safety calls

  • ★ Day after colostomy surgery, the stoma is dark purple: report it to the surgeon now. Swelling is expected; a color change isn't.
  • ★ Suspected appendicitis, and he asks for a heating pad: no heat; urgent evaluation comes first.
  • Sudden cramping, a swollen stoma, vomiting and very watery output can mean a blockage.
  • Pancreatitis with worsening pain, breathlessness or jaundice can mean infection or blockage, which can be fatal.

How the NCLEX tests it

  • Colitis is even and bloody; Crohn's skips and forms fistulas.
  • Diverticulitis: bowel rest and no fiber in a flare; fiber afterward.
  • Traps: heat for appendicitis, laxatives before surgery, fiber in a flare, calling a purple stoma normal.
  • Cholecystitis: right upper pain after fat, Murphy's sign. After surgery, jaundice is reported.
  • Pancreatitis: epigastric pain to the back, high lipase, IV fluids, early feeding. Routine prolonged NPO is a trap.

Practice it next

This sheet comes from Lower GI disorders and ostomies and Gallbladder and pancreas in our NCLEX-RN course. Try free practice questions, or see the lessons it was written from.

Free NCLEX practice questionsThe NCLEX-RN course

Quick self-quiz

  1. Ulcerative colitis spreads evenly up from the ___.
    Show answerrectum
  2. After a diverticulitis flare, colonoscopy waits 6 to ___ weeks.
    Show answer8
  3. Appendicitis rupture risk rises sharply ___ to 36 hours after symptoms start.
    Show answer24
  4. Empty an ostomy pouch at one third to one ___ full.
    Show answerhalf
  5. Acute pancreatitis raises serum lipase and ___.
    Show answeramylase

Sources

More gastrointestinal cheat sheets

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Educational use only. This sheet is a study aid for the NCLEX-RN, not a substitute for clinical judgment, your facility’s policy or the provider’s orders. Where practice varies, follow facility policy and state law. NCLEX® and NCLEX-RN® are registered trademarks of NCSBN, which does not endorse these materials.