Nursing Field Notes / GI ยท Pathophysiology Course
Appendicitis ๐จ
The Classic RLQ Surgical Abdomen
NG-302GIADHD-friendly visual edition
Inflammation of the appendix, located in the RLQ (Right Lower Quadrant) of the abdomen. Untreated, it can perforate โ peritonitis โ a medical emergency.
๐ฏ Pain migratesStarts at umbilicus โ moves to RLQ / McBurney's point.
๐ 3 NEVERsNO heat ยท NO laxatives ยท NO enemas.
๐ NPO + IV fluids firstPain meds ONLY after the surgeon has seen the client.
๐จ Sudden pain relief = ๐ฉCan mean the appendix just ruptured โ not that it's "better."
๐งจ
CAUSE
STEP 1 ยท A BLOCKED TUBE
One obstruction explains the entire cascade โ from swelling to rupture.
๐งญ Where it lives & the obstruction โ perforation cascade
๐ง "Blocked pipe, backed-up pressure, blown gasket." Fecalith blocks โ pressure builds โ tissue dies โ the appendix bursts.
๐ค Common trigger
Most often a fecalith (hardened stool) obstructs the appendiceal lumen. Can also be lymphoid tissue swelling, a foreign body, or a tumor.
๐ง Appendicitis = "the left-behind organ that gets clogged." No real digestive job โ but it can still get plugged and become dangerous.
โ ๏ธ Why it's an emergency
๐ซ The appendix has no room to swell โ a rigid tube
๐ฉธ Swelling โ cuts off its own blood supply โ ischemia
๐ฅ Ischemic tissue ruptures โ gut contents spill into the sterile peritoneal cavity
๐ง A ruptured appendix is a race against the clock โ this is why "watch and wait" is never the plan.
๐
CLUES
STEP 2 ยท READ THE PAIN PATTERN
Where the pain starts, where it ends up, and what happens when you press and let go.
๐ฏ The classic pain migration โ this IS the exam question
COMMON EXAM QUESTION What's the typical pain presentation? Pain starts around the umbilicus, then moves to the right lower quadrant โ described as "pain between the right hip area and belly button."
๐ต Vague, dull pain around the umbilicus (belly button)
โผ hours later
๐ด Sharp, localized pain at McBurney's point (RLQ)
๐ง Wrong-answer traps on this question: pain starting in the LUQ, radiating to the shoulder, or "diffuse all over" are distractors โ the correct pattern is umbilicus โ RLQ.
๐ฉ Signs & symptoms
๐ก๏ธ Low-grade fever
๐ RLQ pain with rebound tenderness
๐คข Nausea, vomiting, anorexia
๐ชต Rigid, "board-like" abdomen
๐ Tachycardia, tachypnea
๐ง "Rebound tenderness" = pain that spikes when you release the pressure, not when you press it โ this is the hallmark peritoneal sign.
๐งช Diagnostics
๐งช CBC โ leukocytosis (โ WBC)
๐ท CT scan โ confirms diagnosis
๐ก Ultrasound โ preferred in children & pregnancy
๐จ Complication: perforation = peritonitis โ a medical emergency
๐ก๏ธ Fever โ over 100.3ยฐF
๐คฒ Rebound tenderness
๐ชต "Rigid" or "board-like" abdomen
๐ Increasing pain, tenderness
๐ฐ Restless
๐ Fast HR & RR (tachycardia / tachypnea)
๐ง Sudden, total pain relief after hours of steady RLQ pain is NOT a good sign โ it can mean the appendix just ruptured and the pressure released. Report it immediately, don't chart it as "improved."
๐ฉบ
CARE
STEP 3 ยท PROTECT THE SURGICAL PICTURE
Before surgery: don't mask it, don't move it, don't feed it. After surgery: get them up and breathing.
๐ Pre-op interventions, in order
1
๐ซ NPO โ nothing by mouth, surgery is likely
2
๐ง IV normal saline or LR (Lactated Ringer's)
3
๐ Pain meds: IV morphine/hydromorphone โ ONLY after the surgeon has assessed the client
๐ง Why wait on pain meds? Masking the pain and exam findings too early can hide the very signs (rebound tenderness, location, rigidity) the surgeon needs to make the call.
โ The 3 NEVERs
๐ฅNO heat pador blanket
๐NO laxatives
๐ฆNO enemas
All three can increase pressure or blood flow to an inflamed appendix and trigger rupture.
๐ง Constipation care (fiber, fluid, laxatives โ see NG-301) is the opposite of what an inflamed appendix needs.
๐ช Surgery: appendectomy
Definitive treatment โ surgical removal of the appendix, done urgently once diagnosis is confirmed to prevent rupture.
๐ง Appendectomy = PRIORITY once diagnosed โ this is not a "schedule it for next week" surgery.
๐ฉน Post-op care
๐ถEarly ambulation
๐ฌ๏ธDeep breathe & cough+ incentive spirometer
๐Shower ONLYno tub baths
๐๏ธAvoid heavy lifting
๐Report redness/swelling/drainageat incision site
Prevent pneumonia: assist with early ambulation, deep breathing/coughing, incentive spirometer. Prevent infection: shower-only bathing, monitor incision.
๐ง "Walk, breathe, watch the wound." The three post-op jobs that prevent the two big complications โ pneumonia and wound infection.
โก
QUICK RECALL
SAY IT OUT LOUD
๐ฏ Umbilicus โ RLQthe classic pain migration.
๐ NO heat, laxatives, enemasall can trigger rupture.
๐ NPO + IV fluids firstpain meds only after surgeon sees them.
Q1: Describe the classic pain pattern of appendicitis.
Pain starts around the umbilicus, then migrates to the right lower quadrant (McBurney's point).
Q2: Name the 3 never-do interventions before an appendicitis diagnosis is confirmed.
No heat pad/blanket, no laxatives, no enemas โ all can increase pressure or blood flow and trigger rupture.
Q3: When can the client receive pain medication?
Only after the surgeon has assessed the client โ masking pain too early can hide key exam findings.
Q4: A client's RLQ pain suddenly disappears entirely โ what should you think?
Possible perforation/rupture, not improvement โ report immediately and watch for peritonitis signs (fever, rigid abdomen, tachycardia).
๐
STUDY SHEETS
FROM YOUR SAVED SET
Appendicitis โ the blocked lumen, pain that starts at the umbilicus and moves to the right lower quadrant, and the NPO-before-surgery rule. — swipe it sideways if it is cut off, or tap to open it full size.
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