A comprehensive clinical reference for nurses working in pre-operative assessment, operating theatre (scrub and scout roles), anaesthesia nursing, and surgical safety across GCC healthcare settings.
Clear fluids: 2 hours pre-op | Solids & milk: 6 hours pre-op
Apply to adults and children >1 year. Breast milk: 4 hours. Formula: 6 hours.
| Class | Description | Examples | Mortality Risk |
|---|---|---|---|
| ASA I | Normal healthy patient | No medical conditions, non-smoker, BMI <30 | <0.1% |
| ASA II | Mild systemic disease | Well-controlled DM/HTN, mild asthma, smoker, BMI 30–40, pregnancy | 0.2% |
| ASA III | Severe systemic disease | Poorly controlled DM/HTN, COPD, morbid obesity, active hepatitis, end-stage renal disease | 1.8% |
| ASA IV | Life-threatening disease | Recent MI (<3 months), CVA, severe valve disease, sepsis | 7.8% |
| ASA V | Moribund — not expected to survive without surgery | Ruptured AAA, massive trauma, intracranial bleed with herniation | 9.4% |
| ASA VI | Brain-dead for organ donation | Brain death declaration, organ harvest | N/A |
Suffix "E" added for emergency procedures (e.g., ASA III-E). Emergency surgery increases mortality risk by approximately 3-fold for each ASA class.
| Investigation | Indications | Notes |
|---|---|---|
| ECG (12-lead) | Age >45 years; known cardiac history; hypertension; diabetes | Baseline for comparison if perioperative cardiac event |
| Chest X-ray (CXR) | Known cardiac/pulmonary disease; recent respiratory symptoms; major thoracic/abdominal surgery | Not routine for all patients |
| FBC (Full Blood Count) | Major surgery; known anaemia; haematological disorders; elderly; chronic disease | Hb target >80 g/L for elective; transfusion trigger discussion with surgeon |
| U&E (Urea & Electrolytes) | Renal disease; diuretics/ACEi/ARB; diabetes; liver disease; age >60 | Check K⁺ — hypokalaemia increases cardiac arrhythmia risk |
| Group & Save / Crossmatch | Expected blood loss >500 mL; vascular/cardiac surgery; Jehovah's Witness (cell salvage plan) | G&S for moderate risk; crossmatch for high-risk/cardiac |
| Clotting Screen (PT/INR/APTT) | Anticoagulant therapy; liver disease; haematological conditions; history of abnormal bleeding | INR target <1.5 for elective surgery |
| Blood Glucose / HbA1c | Diabetes; suspected undiagnosed diabetes | HbA1c >69 mmol/mol (8.5%) — consider postponing elective surgery |
| Pregnancy Test (urine/serum βHCG) | All females of childbearing potential undergoing anaesthesia | Confirm with patient; perform same day as surgery |
SIGN IN
Before induction of anaesthesia
Patient confirms identity, site, procedure, consent. Anaesthetic machine/medication check. Pulse oximeter. Known allergy check. Difficult airway/aspiration risk. Blood loss risk >500 mL.
TIME OUT
Before skin incision
Team introduces themselves. Confirms patient, site, procedure. Antibiotic prophylaxis given within 60 min. Anticipated critical events discussed (surgeon, anaesthetist, nursing team). Imaging displayed.
SIGN OUT
Before patient leaves theatre
Procedure name confirmed. Instrument/sponge/needle counts correct. Specimens labelled. Equipment problems to address. Surgeon, anaesthetist, nurse review key recovery concerns.
WHO evidence: Implementation of WHO SSC reduces major surgical complications by 36% and mortality by 47% (Haynes et al., NEJM 2009). Mandatory at all JCI-accredited GCC facilities.
| Agent | Key Points |
|---|---|
| Propofol | Most common; rapid onset/offset; watch for apnoea and hypotension; pain on injection |
| Ketamine | Dissociative; bronchodilator — useful in asthma/haemodynamic instability; emergence reactions; increases secretions |
| Thiopentone | Barbiturate; used in rapid sequence induction (RSI); causes histamine release; contraindicated in porphyria |
| Etomidate | Cardiovascular stability; adrenal suppression risk with infusion; myoclonus on induction |
| Drug | Type | Notes |
|---|---|---|
| Suxamethonium | Depolarising | RSI — fastest onset (60 s); triggers MH; hyperkalaemia risk in burns/cord injury; short duration (5–10 min) |
| Rocuronium | Non-depolarising | RSI dose 1.2 mg/kg; reversed by sugammadex; preferred over suxamethonium if MH history |
| Vecuronium | Non-depolarising | Intermediate duration; renal/hepatic caution |
| Atracurium | Non-depolarising | Hofmann elimination — safe in organ failure |
| Block | Use | Key Watch |
|---|---|---|
| Femoral nerve block | Knee surgery, femur fracture | Quadriceps weakness — fall risk post-op |
| Brachial plexus block (interscalene/supraclavicular) | Shoulder / arm surgery | Phrenic nerve palsy (interscalene) — caution in poor respiratory reserve |
| TAP (Transversus Abdominis Plane) | Abdominal surgery analgesia | LA toxicity — monitor LAST (Local Anaesthetic Systemic Toxicity) |
| Adductor canal block | TKR — preserves quad function better than femoral | Incomplete coverage for posterior knee |
LAST (Local Anaesthetic Systemic Toxicity): Perioral tingling → seizures → cardiovascular collapse. Treatment: 20% lipid emulsion 1.5 mL/kg IV bolus immediately.
| Score | Level |
|---|---|
| 1 | Awake, anxious, agitated |
| 2 | Awake, co-operative, orientated (TARGET for conscious sedation) |
| 3 | Drowsy, responds to commands only |
| 4 | Asleep, brisk response to stimulation |
| 5 | Asleep, sluggish response |
| 6 | No response — over-sedation |
LMA contraindicated: full stomach / aspiration risk, restricted mouth opening, pharyngeal pathology, prolonged prone position.
Failed intubation: Call for help immediately. Follow Difficult Airway Society (DAS) algorithm — video laryngoscopy, supraglottic airway, surgical airway (FONA) as last resort.
LIFE-THREATENING emergency. Hypermetabolic crisis of skeletal muscle triggered by volatile anaesthetic agents and suxamethonium. Incidence ~1:10,000–1:50,000 anaesthetics.
MH kit must be available in all theatres using trigger agents. Dantrolene must be checked and in date. Contact EMHG (European MH Group) hotline for guidance.
Retained surgical items (RSI) are a never event. Counting is a shared responsibility between scrub nurse and circulator. All counts must be performed verbally and recorded.
Incorrect Count Protocol: If final count is incorrect — (1) Inform surgeon and stop closure if still open; (2) Search wound, drapes, floor systematically; (3) Request intraoperative X-ray (plain abdominal film) BEFORE patient leaves theatre; (4) Complete incident report; (5) Retain all soiled items in sealed bags for recount. Do not attempt to close until item is accounted for or X-ray is reviewed by surgeon.
Fuel: Drapes, skin prep solutions (alcohol-based — allow 3 min drying time), hair, bowel gas | Heat/Ignition: Diathermy, laser, light sources | Oxidiser: O₂, N₂O
Fire response: RACE — Remove patient from fire, Alarm activation, Contain fire, Extinguish (CO₂ extinguisher near patient, not water). If patient airway fire: stop gases, remove ETT, flood airway with saline.
| Position | Procedures | Key Risks & Precautions |
|---|---|---|
| Supine | Abdominal, cardiac, most general surgery | Pressure points: heels, sacrum, occiput — pad all. Arm boards <90°. Brachial plexus stretch if arm abducted >90°. |
| Lithotomy | Gynaecological, perineal, rectal, urological | Compartment syndrome risk >2 hours — lower leg swelling, pain post-op. Bilateral leg lowering simultaneously to prevent haemodynamic shifts. Common peroneal nerve injury at fibula head (padding essential). DVT risk. |
| Prone | Spinal surgery, posterior fossa, burns | Eye protection essential (corneal abrasion/blindness risk). Dedicated prone pillows/frame (Montreal mattress, Jackson table). Pressure: breasts, genitalia, iliac crests, knees, toes. Airway — secure ETT before turning. Venous pooling → haemodynamic instability on turning. |
| Lateral (decubitus) | Thoracic, renal, hip surgery | Axillary roll under dependent arm (not axilla) — prevents brachial plexus/axillary vessel compression. Padding: fibular head, lateral eye, ear, shoulder. Sandbags/beanbag for stabilisation. Head neutral. |
| Trendelenburg | Laparoscopic pelvic, robot-assisted surgery | Head-down 15–30°. ICP elevation — eye pressure, cerebral oedema. Shoulder supports must not compress brachial plexus. Facial/airway oedema in prolonged cases. Avoid in raised ICP. |
| Reverse Trendelenburg | Head/neck, upper abdominal laparoscopic | Venous pooling → hypotension. Foot support (anti-slip board) — prevent patient sliding. Monitor BP closely after position change. |
Position documentation: Record time in position, padding locations, pressure point checks (every 2 hours for prolonged cases), and any intraoperative repositioning in the intraoperative nursing notes.
Emergency conversion: If robotic emergency, undock immediately, convert to open or standard laparoscopic approach. All robotic theatre teams must drill emergency scenarios annually.
High-impact issue in day surgery — leading cause of unplanned admission.
Apfel Score risk factors: Female sex; non-smoker; PONV/motion sickness history; opioid use post-op (1 pt each — score 3–4 = high risk)
| Risk | Prophylaxis Strategy |
|---|---|
| Low (0–1) | No prophylaxis or ondansetron 4 mg alone |
| Medium (2) | Ondansetron 4 mg + dexamethasone 4–8 mg |
| High (3–4) | Triple therapy + TIVA + avoid N₂O + minimise opioids |
Written instructions: Mandatory in GCC for day surgery discharge — include emergency contact number, no driving/alcohol for 24 h, wound signs of infection, follow-up appointment.
| Centre | Location | Speciality Focus |
|---|---|---|
| Cleveland Clinic Abu Dhabi | Abu Dhabi, UAE | Cardiac, neurosurgery, oncology |
| American Hospital Dubai | Dubai, UAE | Oncology, orthopaedic, robotic surgery |
| NMC Healthcare | UAE (multi-site) | General surgery, obstetrics, orthopaedics |
| Johns Hopkins Aramco Healthcare | Dhahran, KSA | Tertiary care, occupational medicine, trauma |
| King Faisal Specialist Hospital | Riyadh, KSA | Transplant, oncology, paediatric surgery |
| Hamad Medical Corporation | Doha, Qatar | Trauma, emergency surgery, burns |
Clinical significance: During Ramadan, fasting from dawn (Fajr) to sunset (Maghrib) — typically 13–16 hours. Muslim patients may refuse elective surgery during Ramadan fasting hours or decline IV fluids out of religious duty.
Theatre cleaning: Between-case clean (5 min), enhanced clean (30 min after contaminated case), terminal clean (end of list, 1 hour). Surfaces, equipment, floor with 1000 ppm chlorine solution.
| Scrub Nurse | ODP | |
|---|---|---|
| Background | Registered nurse with theatre specialisation | ODP diploma/degree (UK) or equivalent |
| Scope in GCC | Most common model in UAE/KSA/Qatar | Increasingly recruited — UK-trained ODPs valued |
| Anaesthesia role | Limited unless additional qualification | Core competency — anaesthetic ODP role |
| Recognition | DOH/DHA/MOH licensed as RN speciality | Recognised by NHS-affiliated hospitals; DoH review ongoing |
Recommended certification: CNOR (Certified Nurse Operating Room) — offered by AORN. Widely recognised by GCC JCI-accredited hospitals as a perioperative nursing credential.
1. A patient presents for elective cholecystectomy. They last ate solid food at 08:00. The earliest time surgery should proceed, based on NBM guidelines, is:
2. During a spinal anaesthetic for caesarean section, the block rises to T4. Which TWO complications should you most anticipate? (Choose the best single answer covering both)
3. The EARLIEST clinical sign of malignant hyperthermia is typically:
4. During an abdominal laparotomy the scrub nurse's final count reveals one swab is missing. The abdomen is about to be closed. The correct immediate action is:
5. A patient in lithotomy position for a 3-hour hysteroscopy begins to complain of severe calf pain post-operatively with a tense, swollen lower leg. The most serious concern is:
6. When placing a diathermy patient return electrode, which site is MOST appropriate?
7. An ASA III patient is brought in for emergency repair of a ruptured femoral artery aneurysm. How should this patient's anaesthetic risk be classified?
8. Dantrolene is the specific treatment for malignant hyperthermia. What is the initial dose?
9. In a patient undergoing laparoscopic surgery who complains of severe shoulder tip pain in the recovery room, the nurse should explain that this is most likely caused by:
10. During the WHO SSC Time Out, which member of the surgical team should VERBALLY confirm the patient's name, procedure, and incision site?