Oesophago-Gastro-Duodenoscopy (OGD) — Upper GI Endoscopy
OGD provides direct visualisation of the oesophagus, stomach and proximal duodenum using a flexible forward-viewing endoscope. It is a cornerstone diagnostic and therapeutic procedure in gastroenterology.
Indications
- Dysphagia — progressive difficulty swallowing solids then liquids
- Haematemesis / melaena — upper GI bleeding investigation and haemostasis
- Barrett's oesophagus surveillance — dysplasia monitoring per BSG protocol (2-yearly if no dysplasia, 6-monthly if low-grade)
- Persistent dyspepsia not responding to PPI — especially age >55 or alarm features
- Suspected peptic ulcer disease, gastric cancer screening, coeliac disease biopsy
- Foreign body removal, PEG tube insertion
Patient Preparation
- Fasting: 4 hours nil by mouth for solids and milk; 2 hours clear fluids permitted
- Medications: usual medications with small sip of water; omit antacids on the morning
- INR/anticoagulants: check if therapeutic/diagnostic procedure planned — bridge as per haematology guidance
- Consent: written informed consent for procedure AND sedation separately
- IV access: 18–20G cannula inserted if sedation planned
- Pre-procedure checks: allergy review, pregnancy test if applicable, conscious level baseline
Sedation Options
Conscious Sedation — Midazolam + Fentanyl
- Midazolam: 1–5 mg IV titrated (reduce in elderly/frail — start 0.5–1 mg)
- Fentanyl: 25–100 mcg IV for analgesia (avoid in respiratory compromise)
- Reversal agents: Flumazenil (midazolam) / Naloxone (opioid) — MUST be immediately available
- Monitoring: SpO2, HR, BP, respiratory rate, conscious level throughout
- Supplemental O2: 2–4 L/min via nasal cannula routine
- Post-sedation restriction: no driving for 24 hours, must have responsible adult escort
Throat Spray Only (Unsedated)
- Agent: Lidocaine 10% oropharyngeal spray (e.g., Xylocaine)
- Dose: 2–4 sprays to posterior pharynx — maximum 4 mg/kg total lidocaine
- Technique: patient sits upright, head tilted back, spray directed to soft palate and posterior throat; allow 60 seconds before procedure
- Bite guard: position before scope insertion — prevents scope damage and patient bite injury
- Advantage: patient may drive after; shorter recovery; suitable for day-case
- Contraindication: known lidocaine allergy, uncooperative patient
Procedure Monitoring
| Parameter | Target / Action Threshold | Frequency |
|---|
| SpO2 | ≥94% — if <90% stop procedure, reposition airway, increase O2 | Continuous |
| Heart Rate | 50–100 bpm — bradycardia from vagal response with scope tip in oesophagus | Continuous |
| Blood Pressure | Baseline ±20% — sedation-induced hypotension common | Every 5 min |
| Conscious Level | AVPU or modified Ramsay — patient should remain rousable to voice | Continuous |
| Respiratory Rate | ≥10 breaths/min — opioid-induced respiratory depression | Continuous |
Immediate Complications — Nurse Recognition
Perforation
Mackler's Triad
- Sudden severe chest/back pain
- Surgical emphysema (neck crepitus)
- Dysphagia / odynophagia
EMERGENCY: Stop procedure. IV access, nil by mouth, urgent surgical review. CXR/CT chest.
Haemorrhage
- Active bleeding from biopsy site or varix
- Haematemesis during/after procedure
- Falling SpO2 from aspiration of blood
IV access x2, cross-match/group & save, haemostatic intervention, monitor haemodynamics.
Aspiration
- Coughing, desaturation, wheeze
- Risk highest with inadequate fasting or active haematemesis
- Left lateral position reduces aspiration risk
Stop procedure. Suction. Sit upright if no spinal concerns. CXR post-procedure.
Post-Procedure Recovery
Immediate Recovery (0–30 min)
- Maintain left lateral position until gag reflex fully returns (test with tongue depressor)
- Continuous SpO2 and conscious level monitoring
- Supplemental O2 until SpO2 stable ≥94% on room air
- Nil by mouth for 30 minutes after throat spray (numbness persists — aspiration risk)
- Observe for delayed bleeding, especially post-biopsy
Discharge Criteria & Instructions
- SpO2 ≥94% on air, stable vital signs
- Alert, orientated, able to swallow safely
- If sedated: responsible adult present; no driving for 24 hours; no operating machinery; no alcohol
- Written discharge instructions provided
- Return advice: worsening pain, fever, haematemesis — attend ED
Colonoscopy & Lower GI Endoscopy
Colonoscopy allows complete visualisation of the colon from rectum to caecum/terminal ileum. Optimal bowel preparation is the single most important factor determining diagnostic quality and adenoma detection rate.
Bowel Preparation Protocol
Split-Dose Polyethylene Glycol (PEG)
- Products: Moviprep (2L), Klean-Prep (4L)
- Split-dose regimen: First dose evening before; second dose 4–6 hours before procedure start
- Day −2: Low-residue diet (no nuts, seeds, high-fibre vegetables, pulses)
- Day −1: Clear fluids only throughout the day
- Endpoint of adequate prep: Patient passing clear yellow fluid — no solid or brown particles
- Hydration: Encourage oral fluids to prevent dehydration — IV fluids if unable to tolerate PO
- Sodium picosulfate (Picolax) — alternative low-volume option; caution in renal impairment
Boston Bowel Preparation Scale (BBPS)
Scored 0–3 per segment (right colon, transverse, left colon) = total 0–9
| Score | Description |
|---|
| 0 | Unprepared — solid stool obscures mucosa |
| 1 | Portions of mucosa visible but other portions not |
| 2 | Minor residue, mucosa well seen |
| 3 | Entire mucosa seen; no residue |
Total score <6 = Inadequate preparation. Repeat preparation required before proceeding. Document and communicate to endoscopist.
Insufflation & Carbon Dioxide
CO2 vs Room Air
- CO2 insufflation: preferred — absorbed 150× faster than room air by colonic mucosa
- Benefits: significantly reduces post-procedure bloating, cramping and discomfort
- Caution: CO2 absorption increases with prolonged procedure — monitor SpO2; caution in COPD with CO2 retention
- Room air: still widely used but associated with more post-procedure discomfort for up to 24 hours
Water-Assisted Colonoscopy
- Water infusion instead of air — reduces sedation requirement
- Useful in patients with tortuous or difficult colons
- Associated with higher caecal intubation rates in some studies
Polypectomy Techniques
Endoscopic Techniques
| Technique | Polyp Size | Key Points |
|---|
| Cold snare | <10 mm | No diathermy — lowest bleeding/perforation risk |
| Hot snare | 10–20 mm | Diathermy — risk of delayed bleeding (up to 2 weeks) |
| EMR | 10–30 mm | Submucosal injection lifts lesion — piecemeal resection |
| ESD | >20 mm / en bloc | Higher perforation risk — specialist centres only |
Post-Polypectomy Complications
Haemorrhage
- Immediate: intra-procedural — endoscopic haemostasis (clips, adrenaline injection)
- Delayed: up to 14 days post-polypectomy — patient must be counselled
- Patient education: report any fresh rectal bleeding, large clots, lightheadedness within 2 weeks
Perforation
- Immediate severe abdominal pain, peritonism, fever
- Post-procedure abdominal X-ray if perforation suspected — free air under diaphragm
- CT abdomen/pelvis more sensitive — refer to surgery if confirmed
Post-Colonoscopy Nursing Care
- Recovery in left lateral — monitor for abdominal distension, pain, bleeding per rectum
- Vital signs every 15 minutes until awake and orientated
- Light diet when bowel sounds return; full diet 24 hours post-polypectomy
- If CO2 used — minimal bloating expected and reassure patient it will resolve quickly
- Anticoagulation restart: hot snare/EMR/ESD — discuss with endoscopist; typically 48–72 hour delay for high-risk resections
- Provide written delayed bleeding warning — clear escalation pathway to ED if concerned
ERCP Nursing — Endoscopic Retrograde Cholangiopancreatography
ERCP combines endoscopy and fluoroscopy to diagnose and treat conditions of the biliary tract and pancreas. It carries a higher complication risk than standard endoscopy and demands specialised nursing expertise.
Indications
- CBD stones — choledocholithiasis with jaundice or cholangitis
- Biliary strictures — malignant (cholangiocarcinoma, pancreatic head cancer) or benign (post-surgical)
- Primary sclerosing cholangitis (PSC) — dominant stricture dilation
- Biliary leak — post-cholecystectomy bile duct injury
- Sphincter of Oddi dysfunction
- Pancreatic duct stenting for chronic pancreatitis/leak
Patient Positioning & Equipment
- Prone position: preferred — optimal fluoroscopic views of biliary tree
- Left lateral: alternative — used in pregnancy, obese patients, intubated patients
- Duodenoscope: side-viewing optics (oblique view) — specialist scope differing from standard OGD
- Elevator channel raises accessories for cannulation of papilla
- Fluoroscopy C-arm positioned over RUQ/epigastrium
- Contrast medium drawn up — water-soluble iodinated contrast
Contrast Media & Radiation Safety
Iodinated Contrast
- Type: non-ionic low-osmolar iodinated contrast (e.g., Omnipaque, Optiray)
- Allergy pre-medication: known iodine/contrast allergy — prednisolone 40 mg oral ×3 doses pre-procedure + antihistamine
- Renal function: check creatinine/eGFR — contrast nephropathy risk if eGFR <30; pre-hydrate
- Metformin: withhold 48 hours before and after if contrast used (lactic acidosis risk with renal impairment)
Radiation Protection — Nursing Staff
- Lead apron: 0.25–0.5 mm lead equivalent — must be worn for all fluoroscopy
- Thyroid shield: lead collar — protect thyroid from scatter radiation
- Lead glasses: recommended for high-volume fluoroscopy staff
- Dosimeter: personal radiation monitoring badge worn above apron at collar level
- Distance: maximise distance from X-ray source; stand behind lead screen when possible
- Dosimeter review: monthly dose records checked by radiation protection supervisor
Therapeutic Interventions
Sphincterotomy
- Incision of sphincter of Oddi to allow stone extraction or stent placement
- Bleeding risk: 1–2% — higher if coagulopathic; correct INR to <1.5 pre-procedure
- Perforation risk: duodenal perforation — rare but serious (<1%)
- Post-sphincterotomy: monitor for bleeding per rectum, abdominal pain, fever
Stent Insertion
| Type | Use | Duration |
|---|
| Plastic stent (7–11.5 Fr) | Benign strictures, short-term | 3–6 months, then exchange |
| SEMS — uncovered | Malignant biliary obstruction | 6–12 months patency |
| SEMS — covered | Benign strictures, leak | Retrievable; 3–6 months |
Post-ERCP Complication Monitoring
1. Post-ERCP Pancreatitis (PEP) — 1–15% Risk
- Most common complication; risk increases with difficult cannulation, young female patients, sphincter of Oddi dysfunction, normal bilirubin
- Monitoring: serum amylase/lipase at 4 hours post-procedure
- Amylase >3× upper limit of normal at 4 hours + pain = PEP confirmed
- Nursing: monitor abdominal pain (severity, radiation to back), nausea/vomiting, tachycardia
- Management: aggressive IV fluid resuscitation (Hartmann's preferred), analgesia, nil by mouth, HDU if severe
- Prevention: rectal indomethacin 100 mg suppository routinely administered post-ERCP in many centres (reduces PEP by ~50%)
2. Post-ERCP Cholangitis
- Charcot's triad: fever + jaundice + right upper quadrant pain
- Reynolds' pentad: adds hypotension + confusion = septic shock / Gram-negative bacteraemia
- Nursing: monitor temperature every 2 hours, observe for rigors, hypotension
- Blood cultures ×2 before antibiotics; IV broad-spectrum antibiotics (piperacillin-tazobactam)
- Urgent repeat ERCP or surgical decompression if not responding
3. Post-Sphincterotomy Haemorrhage
- Melaena, haematemesis, haematochezia post-ERCP
- Check FBC, coagulation, group & save
- Endoscopic haemostasis (injection therapy, clips, coagulation)
- Interventional radiology embolisation if endoscopic failure
4. Perforation
- Retroperitoneal perforation from sphincterotomy — may present with subcutaneous emphysema, worsening pain
- CT abdomen — retroperitoneal air vs free peritoneal air determines management
- Retroperitoneal: conservative (NBM, IV antibiotics, NG tube) if contained
- Free perforation: urgent surgical referral
Advanced Endoscopy Procedures
Advanced endoscopic procedures extend diagnostic and therapeutic capabilities beyond standard luminal endoscopy, requiring specialist training, enhanced nursing competency, and prolonged procedural support.
Endoscopic Ultrasound (EUS)
Indications & Staging
- Oesophageal cancer staging: T-stage (depth of invasion) and N-stage (lymph nodes) — superior to CT for local staging
- Pancreatic cancer: tumour characterisation, vascular involvement, FNA of suspected malignancy
- Submucosal lesions: GIST, leiomyoma — layer of origin identification
- Rectal cancer: T-staging for neoadjuvant therapy planning
- Mediastinal lymphadenopathy: staging lung cancer (EBUS-guided — bronchoscopy variant)
- Pancreatic cyst characterisation, coeliac plexus block/neurolysis
EUS-FNA (Fine Needle Aspiration)
- 22G or 25G needle passed through scope under real-time ultrasound guidance
- Multiple passes (3–5) to improve cellular yield
- ROSE (Rapid On-Site Evaluation): cytopathologist in room for immediate adequacy assessment — increases yield
- Results timeline: cytology 24–72 hours; cell block histology 5–7 days
- Complications: pancreatitis (if pancreatic FNA), bleeding, infection; rare perforation
- Post-procedure: monitor amylase if pancreatic FNA; observe 2 hours minimum
Capsule Endoscopy
PillCam SB3 / Small Bowel Capsule
Indications
- Obscure gastrointestinal bleeding (overt or occult) — small bowel source
- Suspected Crohn's disease — small bowel extent assessment
- Surveillance in hereditary polyposis syndromes (FAP/Peutz-Jeghers)
- Suspected small bowel tumours (carcinoid, GIST, lymphoma)
Contraindications
- Suspected small bowel stricture/obstruction — capsule retention risk → test with PATENCY CAPSULE first (dissolves in 30 hours if retained)
- Swallowing disorders (endoscopic deployment possible)
- Pacemaker/ICD — check manufacturer compatibility; many modern devices compatible
- MRI scan within capsule transit period (8 hours) — delay MRI
Patient Instructions (Day of Procedure)
- Arrive fasted: nil by mouth from midnight (8 hours minimum fast)
- Nurse attaches sensor belt/vest with data recorder around waist/abdomen — check placement and signal
- Swallow capsule whole with small glass of water — do not chew
- Remain ambulatory — walking improves small bowel transit; avoid strenuous exercise
- No eating for 2 hours post ingestion; clear fluids from 2 hours; light meal from 4 hours
- Recording duration: approximately 8 hours — return to unit or post recorder if instructed
- Avoid MRI scanner until capsule confirmed passed in stool
- Report: abdominal pain, distension, vomiting (possible retention)
- Capsule is disposable — naturally excreted; confirm in stool (optional)
- Results reviewed by gastroenterologist within 5–7 working days
Double Balloon Enteroscopy (DBE)
DBE achieves deep small bowel access using an overtube with two balloons, allowing both diagnosis and therapy (polypectomy, haemostasis, balloon dilation). Antegrade (via mouth) or retrograde (via rectum) approach. Longer procedure time (60–120 min) — requires deep sedation or general anaesthetic in most centres. Main complication: pancreatitis (especially antegrade approach — 0.3–1%).
Endoscopic Submucosal Dissection (ESD)
Indications & Technique
- Early gastric cancer (T1a — confined to mucosa)
- Early colorectal cancer and large flat/sessile polyps
- Early oesophageal squamous cell carcinoma
- En-bloc resection allows accurate histological staging
- Procedure: submucosal injection → circumferential incision → dissection using needle knife/IT knife
Nursing Considerations
- Duration: 1–4 hours — patient positioning and pressure area care essential
- Perforation risk: higher than EMR (4–10% gastric ESD) — clips and CO2 insufflation reduce risk
- Post-ESD: NBM 12–24 hours; PPI infusion; observe for delayed bleeding (24–48 hours)
- Histology specimen: pinned flat on cork board immediately post-resection for pathology
POEM & Endoscopic Bariatric Procedures
POEM — Per-Oral Endoscopic Myotomy
- Indication: Achalasia (type I, II, III) — failure of lower oesophageal sphincter to relax
- General anaesthetic required; CO2 insufflation essential (mediastinal/peritoneal CO2 expected)
- Nurse monitoring: CO2 subcutaneous emphysema post-procedure — usually self-limiting
- Post-POEM: CXR, NBM 24 hours, liquid diet progression, PPI therapy
- Reflux oesophagitis in 30–40% — long-term PPI follow-up
Endoscopic Bariatric
- Intragastric balloon: placed endoscopically, inflated 400–700 mL, removed at 6 months
- Endoscopic sleeve gastroplasty (ESG): suturing reduces gastric volume by ~70%
- Nursing: nausea/vomiting management post balloon (antiemetics); monitor for balloon migration (abdominal pain, early satiety change)
Endoscope Decontamination & Infection Control
Endoscope reprocessing failures are a leading cause of healthcare-associated infection in endoscopy. Nurses must follow validated decontamination protocols rigorously and document every step of the reprocessing cycle.
Decontamination Step-by-Step Protocol
Stage 1 — Pre-Cleaning at Point of Use (Bedside)
- Immediately after procedure — wipe external surface with detergent wipe
- Aspirate detergent solution through all channels before scope leaves procedure room
- Cap all ports; transport in closed leak-proof container to reprocessing room
Stage 2 — Leak Testing
- Connect air supply to leak tester; pressurise scope to 22 mmHg
- Submerge fully in water; observe for bubbles (≥60 seconds)
- Flex all angulation controls during submersion
- If leak detected: remove from service immediately — damaged scope is a biofilm reservoir; send for repair before reprocessing
Stage 3 — Manual Cleaning
- Fully submerge in low-foam enzyme detergent solution (follow manufacturer dilution)
- Brush all accessible channels with correct-size channel brush — brush until no visible debris
- Brush biopsy port, instrument channel, suction channel — single-use brushes only
- Irrigate all channels with detergent using syringe
- Visually inspect all channels and connectors for residual debris
Stage 4 — Rinse
- Rinse all channels and external surface with potable water to remove detergent
- Flush channels with minimum 200 mL water each
Stage 5 — High-Level Disinfection
- AER (Automated Endoscope Reprocessor): load scope, connect all channel connectors, select correct cycle — scope-specific adaptor set essential
- Manual HLD: submerge in 2% glutaraldehyde (minimum 20 minutes at 20°C) OR peracetic acid (Steris/Medivator)
- Ensure all channels fully perfused with disinfectant — no air pockets
- Observe contact time per manufacturer specification
- Staff using glutaraldehyde: full PPE (gloves, apron, eye protection, fitted FFP2 mask) — glutaraldehyde is a respiratory sensitiser
Stage 6 — Final Rinse
- Rinse thoroughly with sterile water (or filtered/bacteria-free water)
- Flush all channels with minimum 300 mL sterile water
- Rinse water quality: Pseudomonas-free — microbiological testing quarterly
Stage 7 — Drying & Storage
- Flush all channels with 70% isopropyl alcohol (aids drying, inhibits residual organisms)
- Force-dry all channels with medical-grade filtered air (20 minutes minimum)
- Store scope hanging vertically in ventilated drying cabinet — caps REMOVED from all channels
- Do not coil or lay horizontally — pooling promotes biofilm
- Maximum hanging storage time before re-reprocessing: 72 hours (check local policy)
Duodenoscope Special Considerations
ERCP Scope (Duodenoscope) Elevator Channel — High-Risk Area
The elevator mechanism (used to direct accessories) has a complex recessed area that is difficult to clean mechanically. This was implicated in multiple international Pseudomonas aeruginosa and ESBL-producing Enterobacteriaceae outbreaks (2013–2019, USA/Europe/GCC). Enhanced reprocessing measures include:
- Targeted elevator channel brushing with dedicated micro-brush
- Elevator raised and lowered during channel perfusion
- Double HLD cycle for duodenoscopes in many guidelines
- Routine microbiological surveillance cultures (monthly)
- Single-use duodenoscopes (Exalt Model D) — now available; eliminates cross-contamination risk
- Sterilisation (EtO gas sterilisation or liquid chemical sterilant) for high-risk patients
Single-Use Components & Storage
Single-Use (Disposable) Accessories
- Biopsy forceps — never reuse; risk of cross-infection and degraded sample quality
- Injection needles (sclerotherapy, EMR submucosal injection)
- Polypectomy snares — heat degrades wire; reuse risks ineffective cutting and burns
- Sphincterotomes — ERCP papillotomes
- Guidewires — single patient use (ERCP)
- Documentation: lot number, expiry date, and scope ID recorded per item used
Audit Trail & Documentation
- Every reprocessing cycle: scope serial number, patient ID, AER cycle number/print-out, operator ID, date/time, disinfectant batch number and concentration
- Competency assessment for all reprocessing staff — annually
- AER maintenance records — quarterly servicing
- Disinfectant efficacy testing — daily MEC (minimum effective concentration) strips for glutaraldehyde
- Outbreak investigation: traceback to specific scope and patient list possible via audit trail
GCC Clinical Context & Regulatory Framework
Endoscopy nursing in the Gulf Cooperation Council (GCC) is shaped by high disease burden, international workforce diversity, and evolving national competency frameworks across Saudi Arabia, UAE, Qatar, Kuwait, Bahrain and Oman.
Colorectal Cancer Screening in GCC
Screening Programmes
- Saudi Arabia: CRC screening programme — FIT (faecal immunochemical test) + colonoscopy for positives; KFSH&RC leads national programme; screening from age 45 (aligned with ACS 2018 guideline)
- UAE: DHA/DOH-aligned colorectal screening; colonoscopy offered to at-risk populations; awareness campaigns through Ministry of Health
- Qatar: Hamad Medical Corporation (HMC) — national CRC screening programme; FIT annual + colonoscopy for FIT+ patients; Qatar Cancer Society public campaigns
- GCC CRC incidence rising — attributed to westernised diet, obesity, physical inactivity, and increasing life expectancy
H. pylori in GCC
- Prevalence: 50–80% in GCC populations — among highest globally
- Risk: H. pylori is WHO Group I carcinogen — primary risk factor for gastric cancer and MALT lymphoma
- Test-and-treat strategy: urea breath test (UBT) or stool antigen test — treat without endoscopy if age <50, no alarm features
- Treatment: 14-day concomitant quadruple therapy (PPI + amoxicillin + clarithromycin + metronidazole) — preferred in high-clarithromycin-resistance regions
- Post-treatment confirmation: UBT 4 weeks after completing antibiotics (stop PPI 2 weeks before UBT)
ERCP Services in GCC
Saudi Arabia
- KFSH&RC (Riyadh/Jeddah) — tertiary ERCP centre; complex hepatobiliary cases
- King Fahad Medical City — interventional GI
- SCFHS oversees training pathway for endoscopy specialist nurses
UAE
- Cleveland Clinic Abu Dhabi — advanced ERCP, EUS, POEM
- Mediclinic City Hospital (Dubai) — interventional endoscopy
- DHA/DOH endoscopy nursing competency framework — mandatory
Qatar
- Hamad General Hospital — national ERCP centre
- Sidra Medicine — advanced endoscopy including paediatric
- QCHP licensure required for all endoscopy nurses
Regulatory & Licensing Framework
Nursing Competencies & Pathways
| Body | Framework |
|---|
| SCFHS (Saudi) | Endoscopy Nursing Specialist pathway — Advanced Practice Registered Nurse (APRN) track; separate exam for endoscopy certification |
| DHA (Dubai) | Healthcare Professional Classification — Endoscopy RN requires documented competency log; continuing education hours (30 hrs/2 years) |
| DOH (Abu Dhabi) | HAAD/DOH examination; scope of practice document includes endoscopy-specific competencies |
| QCHP (Qatar) | Healthcare Practitioner Registration; primary source verification; no standalone endoscopy exam but competency in portfolio |
| MOH (Kuwait/Oman/Bahrain) | MOH licensure with evidence of relevant clinical experience; BSN minimum qualification |
Ramadan Endoscopy Considerations
- Bowel preparation scheduling: split-dose PEG — evening dose after Iftar (sunset meal); morning dose 4–6 hours before Suhoor (pre-dawn meal) or after — coordinate with prayer schedule
- Patients observing fast: daytime procedures require religious consultation — many scholars permit medical necessity exception
- IV fluids, medications via parenteral routes — most scholars permit during Ramadan for medical necessity
- Sedation during fasting hours: discuss with patient and family; anaesthesia team counselling re: spiritual concerns
- Staff fatigue management — shift patterns adjusted for nursing staff observing Ramadan (reduced evening shifts post-Tarawih)
- Hydration reminders pre-procedure in non-fasting GCC patients observing milder restriction
GCC / DHA / MOH / SCFHS / QCHP Exam MCQs
Q1. A patient undergoes ERCP and develops fever (38.9°C), rigors and jaundice 12 hours post-procedure. Which of the following is the MOST likely diagnosis?
- A. Post-ERCP pancreatitis
- B. Post-ERCP cholangitis
- C. Contrast allergy reaction
- D. Aspiration pneumonia
Answer: B. The combination of fever, rigors and jaundice after ERCP constitutes Charcot's triad — diagnostic of acute cholangitis from biliary obstruction/infection. Post-ERCP pancreatitis presents with abdominal pain and raised amylase without jaundice.
Q2. A nurse reviews a colonoscopy report documenting Boston Bowel Preparation Scale scores of 2 (right colon), 1 (transverse), 2 (left colon). What is the total score and the appropriate action?
- A. Score 5 — adequate; proceed as planned
- B. Score 5 — inadequate; repeat preparation required
- C. Score 5 — borderline; endoscopist discretion
- D. Score 7 — adequate; no action needed
Answer: B. BBPS total = 2+1+2 = 5. A score below 6 is considered inadequate. A score of 1 in any segment means significant portions of mucosa were not visualised, increasing miss rate for adenomas. Repeat preparation must be arranged before proceeding with diagnostic colonoscopy.
Q3. When reprocessing a duodenoscope after ERCP, which component requires SPECIAL additional attention due to its association with nosocomial Pseudomonas outbreaks?
- A. Biopsy channel
- B. Suction button
- C. Elevator mechanism (forceps lift channel)
- D. Insertion tube distal end
Answer: C. The elevator (Albarran lever) mechanism of duodenoscopes has a recessed, difficult-to-clean area that was implicated in multiple ESBL/Pseudomonas outbreaks worldwide. Enhanced reprocessing including dedicated micro-brush cleaning of the elevator channel and double HLD cycles is now recommended. Single-use duodenoscopes (e.g., Exalt Model D) eliminate this risk.
Q4. A patient is prescribed Moviprep for colonoscopy preparation and reports passing clear yellow fluid. They have completed the full preparation. According to BBPS criteria, what does this indicate?
- A. Inadequate preparation — reschedule
- B. Borderline — give rescue enema
- C. Adequate preparation — proceed with colonoscopy
- D. Possible perforation — seek immediate review
Answer: C. Passing clear yellow fluid is the clinical endpoint confirming adequate bowel preparation. This corresponds to a BBPS score likely ≥6. No solid or brown material in effluent indicates the colon is sufficiently cleared for high-quality colonoscopy.
Q5. A 42-year-old male in Dubai undergoes capsule endoscopy for obscure GI bleeding. The procedure is requested in Ramadan. He states he is fasting. Regarding scheduling, which is the MOST appropriate nursing action?
- A. Cancel the procedure — patients cannot fast for capsule endoscopy during Ramadan
- B. Schedule for night shift when patient has eaten at Iftar
- C. Counsel the patient that medical necessity may permit a religious exception; coordinate with his religious advisor and schedule the capsule ingestion close to Suhoor time to allow fasting compliance post-ingestion
- D. Proceed without counselling — fasting for capsule endoscopy is the same as Ramadan fasting
Answer: C. GCC nursing practice requires cultural and religious sensitivity. Many Islamic scholars permit medical procedures during Ramadan when medically necessary. The nurse should acknowledge the patient's religious beliefs, facilitate discussion with a religious advisor if needed, and attempt to schedule the procedure in a manner that is least disruptive to fasting — e.g., ingesting the capsule at/near Suhoor time. Documenting this counselling in the nursing notes is essential.