Appendicitis — Diagnosis
Pathophysiology
Understanding the cascade from obstruction to perforation is essential for timely nursing assessment.
| Stage | Mechanism | Clinical Implication |
|---|---|---|
| 1 Luminal obstruction | Faecalith, lymphoid hyperplasia, foreign body or tumour blocks appendix lumen | Vague periumbilical pain begins |
| 2 Bacterial overgrowth | Intraluminal pressure rises; bacteria multiply rapidly | Increasing pain, nausea, low-grade fever |
| 3 Ischaemia | Venous congestion → arterial occlusion → mucosal breakdown | Pain localises to RIF, fever rises, leucocytosis |
| 4 Perforation risk | Gangrene → wall necrosis → perforation in 20–30% of cases if untreated | Sudden pain relief then diffuse peritonitis |
Perforation risk increases significantly after 36–72 hours of symptom onset.
Classic Clinical Features
Pain Progression
- Periumbilical colicky pain (early) — visceral
- Migration to RIF / McBurney's point (late) — somatic peritoneal
- McBurney's: 1/3 distance from ASIS to umbilicus
Associated Symptoms
- Anorexia (earliest symptom — highly sensitive)
- Nausea and vomiting (after pain onset — key sequence)
- Low-grade fever 37.5–38.5°C
- Constipation or diarrhoea (pelvic appendix)
Signs on Examination
- Rebound tenderness — peritoneal irritation
- Rovsing's sign — LIF pressure causes RIF pain
- Psoas sign — extend hip causes RIF pain (retrocaecal)
- Obturator sign — flex + internally rotate hip causes RIF pain (pelvic)
- Guarding / rigidity — suggests perforation
Alvarado (MANTRELS) Score
AIR Score — Appendicitis Inflammatory Response
More recent scoring system with improved specificity, especially for high-grade appendicitis.
| Criterion | Points |
|---|---|
| Vomiting | 1 |
| RIF pain | 1 |
| Rebound / muscular defence (mild) | 1 |
| Rebound / muscular defence (moderate–severe) | 2 |
| Temp 38.5–38.9°C | 1 |
| Temp ≥39°C | 2 |
| WBC 10.0–14.9 × 10⁹/L | 1 |
| WBC ≥15.0 × 10⁹/L | 2 |
| CRP 10–49 g/L | 1 |
| CRP ≥50 g/L | 2 |
Imaging & Diagnostics
Ultrasound (USS)
- First-line in children, pregnant women, young women
- No radiation — safe in pregnancy
- Operator dependent — 75–90% sensitivity
- Looks for: non-compressible appendix >6mm, periappendiceal fat stranding
- Limitation: poor in obese patients, gas-filled bowel
CT Abdomen & Pelvis
- Gold standard for appendicitis diagnosis
- Sensitivity >94%, specificity >95%
- Identifies perforation, abscess, alternative diagnoses
- Consideration: ionising radiation — caution in young, pregnant
- IV contrast enhances wall assessment
- Low-dose CT protocols increasingly used
Diagnostic Laparoscopy
- Diagnostic + therapeutic in one procedure
- Preferred in women of childbearing age where USS/CT equivocal
- Can identify: ovarian pathology, Meckel's, adhesions
- Negative appendicectomy rate: target <10%
Blood Tests
- FBC: WBC, neutrophilia (shift to left)
- CRP (rises after 12h)
- U&E, LFTs, amylase
- Urinalysis (exclude UTI, renal colic)
- Pregnancy test (all females of childbearing age)
Appendicitis — Management
Antibiotic-First (Non-Operative) Approach
Evidence-based for uncomplicated appendicitis (no perforation, phlegmon or abscess).
Suitable Candidates (Alvarado 5–7)
- No perforation or abscess on CT
- Appendix diameter <1.1cm (no faecalith)
- Clinically well, tolerating oral medication
- Reliable follow-up available
Antibiotic Regimen
- IV co-amoxiclav or IV cefuroxime + metronidazole
- 48–72h IV, then switch to oral amoxicillin-clavulanate × 7 days
Nursing Monitoring
- Hourly obs — report deterioration immediately
- Pain trend (VAS every 2–4h)
- Temperature, WBC trend
- Escalate if pain worsens, fever spikes, or signs of peritonism develop
Laparoscopic Appendicectomy
Standard of care for acute appendicitis in most GCC hospitals.
Advantages Over Open
- Faster recovery, earlier mobilisation
- Reduced wound infection rate
- Better visualisation — identify differential diagnoses
- Lower post-op ileus rate
Open Appendicectomy Indications
- Laparoscopy unavailable / contraindicated
- Complicated appendicitis (perforation with dense adhesions)
- Conversion from laparoscopy
- Haemodynamic instability
Intra-operative Nursing Notes
- Patient positioning: supine or slight Trendelenburg, left lateral tilt
- Diathermy pad placement and check
- Extraction bag — mandatory for perforated appendix (prevent port-site contamination)
- Specimen: label, fix in formalin for histology
- Irrigation if perforation present
Pre-operative Nursing Care
Preparation
- IV access × 2 (large bore 16–18G)
- NBM: 6h solids/2h clear fluids
- IV fluids if nil by mouth >4h or dehydrated
- Consent obtained and witnessed
- Site marking (rarely required — RIF standard)
- VTE risk assessment — TED stockings / LMWH
Antibiotics
- IV antibiotics within 1 hour of diagnosis/admission
- Common: IV co-amoxiclav 1.2g TDS or IV cefuroxime + metronidazole
- Continue until appendicectomy for uncomplicated
- Extended 3–5 days post-op for perforated/gangrenous
- Document allergy status before prescribing
Analgesia (Pre-op)
- Paracetamol 1g IV/oral — first line
- NSAIDs (if no contraindication)
- Morphine IV (titrate) — does NOT mask diagnosis
- Anti-emetics: ondansetron / cyclizine
- Document VAS pain scores every 30–60min
Bloods / Imaging
- Group & save (crossmatch if complicated)
- Coagulation if anticoagulated
- ECG if >40 years or cardiac history
- Ensure CT/USS results reviewed by surgeon
Post-operative Nursing Care
Immediate Recovery (0–4h)
- ABCDE assessment on arrival from theatre
- Obs every 15min × 1h, then every 30min
- Pain assessment (VAS) — target <4/10
- Nausea / vomiting — anti-emetics PRN
- Wound check — per port site dressings
- Drain output (if drain placed — perforated only)
- Urine output ≥0.5 ml/kg/h
Day 0–1 Nursing
- Oral fluids when alert and not nauseous
- Progress to light diet if tolerating fluids
- Mobilise day 0 if stable — VTE prevention
- Remove urinary catheter (if placed) early
- Wound care — port sites usually closed with sutures/clips
- Shoulder tip pain — diaphragmatic irritation from CO₂ (reassure)
Discharge Criteria
- Tolerating oral diet and fluids
- Pain controlled on oral analgesia
- Afebrile >24h (uncomplicated)
- Passing flatus (bowel sounds present)
- Mobile and independent
- Written discharge advice given
Discharge Advice
- No heavy lifting × 4–6 weeks
- Return to work: 1 week (laparoscopic), 2–4 weeks (open)
- Return to ED if fever, increasing pain, wound red/swollen/discharge
- Histology results explained — rare carcinoid tumour
Complicated Appendicitis
Perforated Appendicitis
- Signs: generalised peritonitis, rigidity, absent bowel sounds, high fever (>38.5°C)
- Emergency laparoscopy / laparotomy
- IV antibiotics × 3–5 days post-op (or until afebrile + WBC normalised)
- Peritoneal washout + drain placement
- Extended ITU/HDU care may be required
Appendix Abscess / Phlegmon
- Localised collection — walled off by omentum
- Conservative initial management:
- IV antibiotics (broad spectrum)
- CT-guided percutaneous drainage if >3cm
- NPO / IV fluids
- Interval appendicectomy at 6–8 weeks — debated but commonly practiced in GCC
- Follow-up CT or colonoscopy to exclude underlying tumour
Gangrenous Appendicitis
- Full-thickness necrosis without frank perforation
- High infection risk — extraction bag essential
- Post-op antibiotics × 48–72h
- Higher risk: diabetics, immunosuppressed, elderly
HR >120 + SBP <90 (sepsis), board-like abdomen, sudden pain relief (perforation), temp >39°C
Cholecystitis & Biliary Disease
Gallstone Types
| Type | Composition | Proportion | Risk Factors |
|---|---|---|---|
| Cholesterol | Cholesterol crystals + bile salt matrix | 80% | Female, Fat, Forty, Fertile, Family (5 Fs), rapid weight loss, TPN, high fat diet |
| Pigment (black) | Calcium bilirubinate | 15% | Haemolysis (sickle cell, spherocytosis), cirrhosis |
| Pigment (brown) | Calcium bilirubinate + fatty acids | 5% | Biliary infection, bile duct stasis, parasites (in Asia) |
Note: Gallstones extremely common in GCC populations — high-fat diet, obesity rates, and genetic predisposition all contribute.
Biliary Colic
Presentation
- Episodic severe RUQ or epigastric pain
- Precipitated by fatty food — gallbladder contracts against obstructed cystic duct
- Radiates to right shoulder tip (diaphragmatic irritation)
- Duration: 30 minutes to 6 hours (resolves spontaneously)
- No fever, no leucocytosis (key distinction from cholecystitis)
Investigations
- USS — first line: gallstones visible, normal GB wall
- LFTs — usually normal (may be mildly raised if stones passed)
- Amylase / lipase — exclude pancreatitis
Management
- Analgesia: diclofenac IM/IV (biliary antispasmodic) or opioids
- Elective laparoscopic cholecystectomy
- Low-fat diet until surgery
Acute Cholecystitis
Clinical Features
- Persistent RUQ pain (>6 hours, unlike biliary colic)
- Fever (>38°C), nausea, vomiting
- Murphy's sign — arrest of inspiration on deep palpation of RUQ
- Leucocytosis, raised CRP
- May have mild jaundice (10%) from pericholecystic inflammation of CBD
Investigations
- USS: gallstones + GB wall >4mm + pericholecystic fluid + sonographic Murphy's
- CT: if USS equivocal or complications suspected
- HIDA scan: if acalculous cholecystitis suspected (GB ejection fraction <35%)
- FBC, LFTs, CRP, amylase, blood cultures
Tokyo Guidelines — Severity Grading
Acalculous Cholecystitis
- Cholecystitis WITHOUT gallstones
- Accounts for 5–10% of acute cholecystitis
- Critically ill patients: ICU, major trauma, burns, post-op major surgery
- Mechanism: bile stasis + ischaemia + bacterial translocation
- Worse prognosis — high perforation rate (up to 40%)
- Diagnosis: HIDA scan, CT (GB wall thickening, sludge, pericholecystic fluid)
- Treatment: percutaneous cholecystostomy (most patients too unwell for surgery)
Biliary Emergencies — Key Clinical Triads
Charcot's Triad = Ascending Cholangitis
- 1 RUQ pain
- 2 Jaundice (obstructive — dark urine, pale stools)
- 3 Fever with rigors
Caused by CBD stone obstructing common bile duct → infection tracking up biliary tree
Reynolds' Pentad = Severe/Suppurative Cholangitis
- All three of Charcot's triad PLUS:
- 4 Septic shock (hypotension, tachycardia)
- 5 Altered mental status (confusion, drowsiness)
Mortality without prompt drainage can exceed 50%. Requires urgent ERCP/PTBD and ICU.
Cholecystitis — Management
IV Antibiotics
Principles
- Broad-spectrum covering Gram-negative enterics and anaerobes
- Target organisms: E. coli, Klebsiella, Enterococcus, Bacteroides
| Regimen | Coverage | Notes |
|---|---|---|
| Piperacillin-tazobactam (Tazocin) 4.5g TDS | Broad Gram+/-, anaerobes | First choice in moderate-severe (Grade II-III) |
| Co-amoxiclav 1.2g TDS | Good biliary penetration | Grade I / mild disease |
| Cefuroxime + metronidazole | Gram-negative + anaerobes | Penicillin allergy alternative |
| Meropenem (reserve) | Very broad spectrum | Sepsis / resistant organisms |
Add metronidazole if anaerobic cover required and not included in regimen.
Analgesia for Biliary Disease
| Agent | Mechanism | Notes |
|---|---|---|
| Diclofenac 75mg IM | NSAID — biliary smooth muscle relaxant, anti-inflammatory | First choice for biliary colic. Reduces biliary pressure. Avoid in renal impairment. |
| Morphine IV/IM | Opioid receptor agonist | Older teaching: morphine causes sphincter of Oddi spasm — modern evidence shows this is minimal and clinically insignificant. Safe to use. |
| Pethidine IM | Opioid — less sphincter spasm historically cited | Largely replaced by morphine. Metabolite (norpethidine) may cause seizures. |
| Paracetamol 1g IV/oral | Central + peripheral analgesia | Safe, use regularly as baseline |
| Hyoscine butylbromide (Buscopan) | Antispasmodic | Mild relief for colic |
Early Laparoscopic Cholecystectomy
Timing — Why Early?
- Within 72 hours of symptom onset (Grade I–II) is superior to interval surgery
- Reduces: total hospital stay, recurrent attacks, readmissions, complications
- Early surgery: easier tissue planes, less fibrosis, less inflammation dissection difficulty
- After 72h: inflammation increases risk of conversion and bile duct injury
Grade III (Severe) — Not for Immediate Surgery
- Stabilise in ICU first
- Percutaneous cholecystostomy (PCT) — drain gallbladder under radiological guidance
- Delayed cholecystectomy once recovered (6–8 weeks)
Pre-operative Nursing
- NBM 6h food / 2h clear fluids
- IV access, bloods, group & save
- LFTs + USS reviewed — CBD stones excluded or managed
- VTE prophylaxis — LMWH + TED stockings
- Consent for possible open conversion
- Antibiotic prophylaxis: single dose cefuroxime at induction
Intra-operative Notes
- Patient supine, slight reverse Trendelenburg + right lateral tilt
- Critical view of safety (CVS) — surgeon must identify cystic duct and artery clearly before clipping (prevents bile duct injury)
- Intra-operative cholangiogram (IOC) if CBD stones suspected
ERCP — Endoscopic Retrograde Cholangiopancreatography
Indication
- Choledocholithiasis (CBD stones) — confirmed on MRCP or USS
- Ascending cholangitis — urgent decompression
- Pre-cholecystectomy CBD clearance
Pre-procedure Nursing
- Written consent obtained by endoscopist
- NBM as per conscious sedation protocol
- IV access, bloods: LFTs, coagulation, FBC
- Stop anticoagulants (timing per protocol)
- Midazolam + fentanyl titration for sedation
- Prophylactic antibiotics (ciprofloxacin)
Post-procedure Monitoring (2–4 hours)
- Pancreatitis — most common complication (3–5%): rising amylase, severe epigastric pain, nausea
- Bleeding — after sphincterotomy: haematemesis, melaena, dropping BP
- Perforation — rare: severe pain, peritonism, air on X-ray
- Cholangitis — fever post-procedure despite decompression
- Vital signs every 30min × 2h post-procedure
- Resume diet when alert and no complications
MRCP — Magnetic Resonance Cholangiopancreatography
Role
- Non-invasive imaging of biliary tree and pancreatic duct
- Performed BEFORE ERCP to confirm CBD stones
- Sensitivity ~95% for choledocholithiasis
- No radiation, no contrast (usually)
- Cannot be therapeutic — ERCP required for stone removal
Percutaneous Cholecystostomy (PCT) Drain Nursing
- Placed under USS/CT guidance — liver through to gallbladder
- Drain nursing:
- Record output volume and colour (bile = green/yellow)
- Check tube position (mark at skin)
- Flush per protocol (usually 10mL saline TDS)
- Dressing changes and securing
- Escalate: sudden drop in output (blockage/displacement), pain, fever, bile leak at site
Post-cholecystectomy Nursing Care
Early Recovery (Day 0–1)
- Monitor port site dressings (3–4 port sites for laparoscopic)
- Drain if placed — record output, colour (dark blood = alarm)
- Shoulder tip pain — CO₂ diaphragmatic irritation — reassure, mobilise, analgesia
- Nausea management (common post-laparoscopy)
- Urine output monitoring
Diet Advice Post-operatively
- Low-fat diet × 6 weeks post-op
- Bile released continuously (no reservoir) — high fat causes diarrhoea initially
- Gradually introduce normal diet at 4–6 weeks
- Small, frequent meals better tolerated
- Avoid: fried food, pastries, high-fat dairy early on
Bile Leak — Early Warning Signs
- Increasing RUQ/epigastric pain post-op day 1–3
- Fever, rising CRP, leucocytosis
- Bile from drain (green-tinged, large volume)
- Bilious vomiting
- Jaundice developing post-op
Complications & Differential Diagnoses
Appendicitis Complications
Peritonitis (Perforated Appendicitis)
- Generalised rigidity — board-like abdomen
- Guarding — involuntary abdominal muscle contraction
- Absent or reduced bowel sounds
- Severe systemic sepsis — HR >120, fever >39°C, hypotension
Management Options
| Approach | Criteria | Nursing Notes |
|---|---|---|
| IV antibiotics + CT-guided drainage | Localised abscess >3cm, clinically stable | Monitor drain output, trend fever/WBC, IV antibiotics x5–7 days |
| Re-look laparotomy | Generalised peritonitis, clinical deterioration, failed conservative management | Prepare for emergency theatre, resuscitate (IV fluids, vasopressors if needed), ITU post-op |
Cholecystitis Complications
| Complication | Description | Key Feature |
|---|---|---|
| Empyema | Pus-filled gallbladder — bacterial proliferation | Swinging fever, toxicity, USS: layering fluid in GB |
| Mirizzi Syndrome | Large gallstone impacted in Hartmann's pouch or cystic duct compressing CBD externally | Obstructive jaundice without CBD stone on MRCP; ERCP may confuse — suspect at surgery |
| Gallstone Ileus | Large gallstone erodes through GB wall into bowel (cholecystoenteric fistula) → obstructs at terminal ileum | Rigler's triad: SBO + pneumobilia + ectopic stone. Rare but classic exam question. |
| Bouveret Syndrome | Gallstone erodes into duodenum → gastric outlet obstruction | Vomiting + weight loss. Very rare. Requires endoscopic / surgical removal. |
| Perforation | Full-thickness GB wall necrosis → bile leak → biloma or peritonitis | Sudden worsening pain, peritonism, USS: free fluid, GB wall defect |
Differential Diagnoses — RIF Pain (Don't Miss!)
Gynaecological (Women)
- Ovarian torsion — sudden onset severe pain, USS: absent ovarian blood flow, surgical emergency
- Ectopic pregnancy — missed period, haemodynamic instability, +ve pregnancy test, USS: empty uterus + free fluid. LIFE-THREATENING
- Ovarian cyst — rupture / haemorrhage
- Pelvic inflammatory disease (PID) — bilateral tenderness, cervical excitation, fever, discharge
- Endometriosis — cyclical pain, chronic history
GI / Surgical
- Meckel's diverticulitis — 2% population, 2 feet from ileocaecal valve, clinically identical to appendicitis
- Mesenteric adenitis — children, preceding viral URTI, tender RIF, self-limiting
- Crohn's ileitis — terminal ileum inflammation, diarrhoea, weight loss, anal disease history
- Psoas abscess — insidious onset, flexion deformity of hip, Crohn's / TB / immunosuppressed
- Caecal carcinoma — elderly, anaemia, weight loss, change in bowel habit
- Intestinal obstruction — colicky pain, distension, vomiting, high-pitched bowel sounds
Urological & Thoracic
- Right renal colic — loin-to-groin pain, haematuria, inability to lie still (vs appendicitis: still), USS: hydronephrosis, CT KUB: calculus
- UTI / pyelonephritis — dysuria, frequency, loin pain, costovertebral angle tenderness
- Right lower lobe pneumonia — referred RIF pain, respiratory symptoms, productive cough, fever, crepitations on auscultation. Chest X-ray essential if respiratory symptoms
- Testicular torsion (males) — scrotal pain + swelling — examine genitalia!
Differential Diagnoses — RUQ Pain
GI Causes
- Peptic ulcer disease (PUD) — epigastric, relationship to food, antacid relief
- GERD — burning, regurgitation, worse lying down
- Hepatitis (viral/alcoholic/autoimmune) — tender hepatomegaly, deranged LFTs, jaundice
- Hepatic abscess — swinging fever, diaphragmatic pleurisy, USS: hypoechoic lesion
Surgical / Vascular
- Subphrenic abscess — post-abdominal surgery complication, diaphragmatic elevation on X-ray
- Fitz-Hugh-Curtis syndrome — perihepatitis from PID / chlamydia, RUQ pain + pelvic symptoms in women
- Right hepatic flexure carcinoma — change in bowel habit, weight loss, anaemia
- Budd-Chiari syndrome — hepatic vein thrombosis, hepatomegaly, ascites
Cardiorespiratory
- Right heart failure / congestive cardiac failure — tender hepatomegaly, elevated JVP, peripheral oedema, S3 gallop
- Right pleural effusion — reduced breath sounds, stony dull percussion, USS: pleural fluid
- Right lower lobe pneumonia — fever, cough, RUQ referred pain
- Pulmonary embolism — pleuritic chest pain + RUQ (rare but possible)
GCC Context & Exam Preparation
GCC-Specific Clinical Context
Gallstone & Biliary Disease
- Gallstones highly prevalent in GCC due to: high-fat dietary patterns, high obesity rates, genetic predisposition, rapid weight loss cycles (yo-yo dieting), and metabolic syndrome
- Cholecystitis is among the most common acute surgical presentations in GCC emergency departments
- Early cholecystectomy widely performed in major GCC centres (Dubai, Abu Dhabi, Riyadh, Doha)
Appendicitis in Pregnancy
- Appendix shifts superiorly and laterally as uterus enlarges — pain may be in RUQ or flank rather than RIF, especially in 3rd trimester
- Delayed diagnosis common due to atypical presentation
- USS preferred (no radiation); MRI used if USS equivocal
- Perforation rates higher in pregnancy — fetal mortality up to 20-35% with perforation
- GCC note: obstetric nurses must be aware of this shift — do not dismiss abdominal pain in pregnant patients
Ramadan Fasting Considerations
- Post-cholecystectomy patients: counsel on low-fat diet during Iftar (breaking fast) — large fatty meal after prolonged fasting can cause significant GI distress
- Advise: break fast with light, low-fat foods; avoid oily/rich dishes for first 4–6 weeks post-op
- Patients on antibiotics during Ramadan — counsel on oral antibiotic timing relative to Suhoor and Iftar
- Coordinate with religious care coordinator if patient requires IV medications during daylight hours
Regulatory & Practice Standards
DHA (Dubai Health Authority)
- Nursing scope of practice — registered nurses in Dubai must practice within DHA-defined scope
- Pre-operative nursing assessment — DHA surgical nursing standards require documented assessment including allergy, VTE risk, surgical site, consent verification
- DHA exam topics: post-operative monitoring, drain care, antibiotic administration
DOH (Department of Health — Abu Dhabi)
- JAWDA quality framework — nursing documentation standards
- Medication administration — 10 rights of safe medication administration
- Patient safety — surgical timeout (WHO Surgical Safety Checklist) compliance
- DOH exam: focus on clinical assessment, patient education, pharmacology
SCFHS (Saudi Commission for Health Specialties)
- Saudi nursing licensing — HAAD/SCFHS pathway for surgical nursing
- Surgical nursing exam topics: wound care, drain management, post-op complications, pharmacology
- High-volume surgical nursing in Saudi tertiary centres — King Faisal, KFSH&RC, KAMC
- Antibiotic stewardship protocols increasingly important in SCFHS accredited facilities
Antibiotic-First Approach in GCC
- Non-operative management for uncomplicated appendicitis not uniformly adopted across GCC
- Patient and family preference often favours surgery in GCC cultural context
- Private hospital volume pressure may favour surgery
- Nurses should be able to explain antibiotic-first option and its evidence base to patients
High-Volume Laparoscopic Nursing in GCC Private Hospitals
Nurse Competencies Required
- Laparoscopic instrument knowledge: trocars, graspers, clip applicators, stapling devices
- CO₂ insufflation — pressure settings, leak detection
- Diathermy — monopolar and bipolar safety
- Extraction bag handling
- Scope care and processing (sterilisation per manufacturer)
- Positioning: Lloyd-Davis, lithotomy, reverse Trendelenburg
Scrub Nurse Responsibilities
- Instrument counts before and after — document
- Sterile field maintenance
- Specimen labelling and chain of custody
- Recording operative findings
- Anticipate surgeon needs — faster turnaround
- Communicate any sharps injuries immediately
Post-op Recovery — Laparoscopic Specific
- Shoulder tip pain from CO₂ — common, usually resolves in 24–48h
- Port site dressings — 3–4 sites (10mm, 5mm)
- Urinary retention — monitor first void post-GA
- Nausea — high incidence post-laparoscopy; prophylactic anti-emetics important
- Day surgery candidacy — most laparoscopic cholecystectomies discharged same day in GCC private hospitals
DHA / DOH / SCFHS Exam Key Points Summary
Must-Know Clinical Facts
| Topic | Key Fact |
|---|---|
| Alvarado score | MANTRELS mnemonic; 7+ = surgical review; 5–6 = observe; <4 = low risk; max score = 10 |
| Murphy's sign | Arrest of inspiration on palpation of RUQ; positive = acute cholecystitis |
| Charcot's triad | RUQ pain + jaundice + fever = ascending cholangitis |
| Reynolds' pentad | Charcot's + septic shock + altered consciousness = severe/suppurative cholangitis |
| Perforation rate | 20–30% of appendicitis if untreated |
| Tokyo Grade III | Organ dysfunction — percutaneous cholecystostomy, ICU |
| NBM guidelines | 6h solids / 2h clear fluids before surgery |
| Post-cholecystectomy diet | Low fat × 6 weeks |
| APPAC trial | 73% appendicitis treated antibiotics alone, 27% need appendicectomy at 5 years |
| Bile duct injury prevention | Critical View of Safety (CVS) — surgeon identifies cystic duct and artery before clipping |
Common Exam Scenarios
Interactive: Alvarado Score Calculator
Select Yes or No for each MANTRELS criterion to calculate the Alvarado score and receive clinical guidance.