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Key Facts: OMSB Anesthesia (OEA) Exam

100 MCQs

Single-best-answer questions on the OEA

https://drive.google.com/file/d/1XQSO3SJ_do6TX0X4OcgbYyr0668iClUg/view

2 h 30 min

Examination duration

https://drive.google.com/file/d/1XQSO3SJ_do6TX0X4OcgbYyr0668iClUg/view

65%

Passing standard

https://drive.google.com/file/d/1XQSO3SJ_do6TX0X4OcgbYyr0668iClUg/view

USD 220

Examination fee

https://omsb.gov.om/home/infoPage?id=53

15 domains

Blueprint areas specified in August 2025 OMSB booklet

https://drive.google.com/file/d/1XQSO3SJ_do6TX0X4OcgbYyr0668iClUg/view

The OEA features 100 single-best-answer MCQs in 2 hours 30 minutes, costs USD 220, and requires a 65% score to pass (OMSB booklet, August 2025). It is administered via Pearson VUE worldwide and at the OMSB National Test Center in Muscat. These 100 independent practice questions cover all 15 blueprint areas, led by subspecialty anesthesia (15%), pharmacology (13%), physiology (13%), and critical care (9%).

Sample OMSB Anesthesia (OEA) Practice Questions

Try these sample questions to review concepts for the OMSB Anesthesia (OEA) exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1A 54-year-old patient undergoing craniotomy for clipping of an anterior communicating artery aneurysm requires temporary parent vessel clipping. Which physiological strategy is most appropriate during temporary arterial occlusion to minimize focal cerebral ischemia?
A.Induction of profound hypothermia to a core temperature below 28°C
B.Deliberate hypotension to reduce collateral vascular mural tension
C.Normotension to mild hypertension to maintain collateral cerebral perfusion
D.Hyperventilation to reduce arterial carbon dioxide tension below 25 mmHg
Explanation: During temporary parent artery occlusion for intracranial aneurysm clipping, maintaining normotension or mild induced hypertension enhances collateral blood flow through the circle of Willis and leptomeningeal vessels, thereby preserving cerebral perfusion in penumbral territories. Deliberate hypotension would worsen focal ischemic injury, profound hypothermia carries severe cardiac risks without proven benefit, and extreme hypocapnia causes cerebral vasoconstriction that exacerbates ischemia.
2During a posterior fossa craniotomy in the sitting position, which intraoperative monitoring modality is the most sensitive non-invasive monitor for detecting venous air embolism?
A.Pulmonary artery catheterization for mean pulmonary artery pressure
B.Precordial Doppler ultrasound
C.End-tidal carbon dioxide capnography
D.Transthoracic impedance plethysmography
Explanation: Precordial Doppler ultrasound is the most sensitive non-invasive monitor for detecting venous air embolism (VAE), capable of identifying intracardiac microbubbles as small as 0.25 mL (or 0.05 mL/kg). Transesophageal echocardiography (TEE) is more sensitive but is semi-invasive. Capnography shows a drop in end-tidal CO2 only after larger volumes of air enter the pulmonary circulation.
3During suspension microlaryngoscopy with carbon dioxide laser ablation of vocal cord papillomas, a sudden flash and smoke appear in the surgical field. What is the immediate first action the anesthesiologist must take?
A.Administer 100% oxygen via the breathing circuit to flush out smoke
B.Inject normal saline into the endotracheal tube lumen to extinguish the flame
C.Perform emergency needle cricothyroidotomy to secure the subglottic airway
D.Stop all airway gas flow and remove the tracheal tube
Explanation: The ASA airway-fire algorithm calls for simultaneous actions: remove the tracheal tube, stop the flow of all airway gases, remove sponges or other flammable material from the airway, and pour saline into the airway. Ventilation is then re-established, avoiding supplemental oxygen and nitrous oxide if possible, and the airway is examined (for example by rigid bronchoscopy) to assess injury and remove debris before deciding on reintubation.
4A 6-year-old child presents 6 hours following tonsillectomy with active oral bleeding, tachycardia of 145 bpm, blood pressure 85/50 mmHg, and pale, cool extremities. Which anesthetic induction technique is most appropriate for surgical re-exploration?
A.RSI with cricoid pressure after IV volume resuscitation
B.Inhalation induction with sevoflurane in 100% oxygen with the child in the lateral Trendelenburg position
C.Standard intravenous induction with propofol and fentanyl without gastric decompression
D.Awake fiberoptic oral intubation under topical lidocaine anesthesia
Explanation: Post-tonsillectomy hemorrhage patients frequently have significant hypovolemia from swallowed blood and are considered to have a full stomach of clotted blood. The initial management is aggressive intravenous fluid resuscitation to restore intravascular volume before induction, followed by rapid-sequence induction (RSI) using an agent that maintains hemodynamics (such as ketamine or titrated etomidate) with cricoid pressure and immediate suction availability (with two working suction catheters).
5During strabismus repair surgery under general anesthesia, traction on the medial rectus muscle leads to acute sinus bradycardia with a heart rate drop from 75 to 34 bpm. What are the afferent and efferent limbs of this reflex?
A.Afferent via glossopharyngeal nerve; efferent via vagus nerve
B.Afferent via optic nerve; efferent via sympathetic cardiac plexus
C.Afferent via trigeminal nerve (ophthalmic division); efferent via vagus nerve
D.Afferent via facial nerve; efferent via glossopharyngeal nerve
Explanation: The oculocardiac reflex (trigeminovagal reflex) is triggered by traction on extraocular muscles (most commonly the medial rectus), pressure on the globe, or retrobulbar hematoma. The afferent pathway runs through the ciliary nerves to the ophthalmic division of the trigeminal nerve (CN V1) and the Gasserian ganglion to the main sensory nucleus of the trigeminal nerve; the efferent pathway travels through the vagus nerve (CN X) to the sinoatrial and atrioventricular nodes, resulting in profound bradycardia, nodal rhythms, or asystole.
6A 32-year-old trauma victim with a penetrative open globe corneal laceration requires urgent repair 2 hours after consuming a full meal. Which neuromuscular blocking approach best balances aspiration prevention and the avoidance of intraocular extrusion?
A.Atracurium administered in standard intubating dose with 4 minutes of mask ventilation
B.High-dose rocuronium (1.2 mg/kg) RSI with sugammadex immediately available
C.Succinylcholine (1.5 mg/kg) without prior defasciculating pretreatment
D.Pancuronium (0.1 mg/kg) preceded by deep volatile anesthetic mask induction
Explanation: In an open globe injury with a full stomach, rapid control of the airway without coughing, straining, or increasing intraocular pressure (IOP) is critical. High-dose rocuronium (1.2 mg/kg) achieves intubating conditions comparable to succinylcholine within 60 seconds without causing transient increases in IOP or sustained extraocular muscle contracture, and its neuromuscular blockade can be rapidly reversed with sugammadex if a 'cannot intubate, cannot oxygenate' scenario occurs.
7One hour into a transurethral resection of the prostate (TURP) under spinal anesthesia with a 1.5% glycine irrigating solution, the patient becomes confused, restless, and hypertensive, with a heart rate of 48 bpm. Serum sodium is reported as 108 mEq/L. What is the most appropriate initial pharmacological treatment for this patient's acute severe hyponatremia?
A.3% hypertonic saline, limiting the rise to 8–10 mEq/L per 24 h
B.0.9% normal saline at 500 mL/h with intravenous furosemide 80 mg bolus
C.Intravenous infusion of 5% dextrose in water to balance plasma hyperosmolality
D.Intravenous calcium gluconate bolus followed by immediate desmopressin administration
Explanation: TURP syndrome results from intravascular absorption of large volumes of hypotonic irrigant (such as 1.5% glycine), producing acute hypervolemic hyponatremia and neurologic symptoms. For acute symptomatic severe hyponatremia (Na <115 mEq/L with mental status changes or seizures), the definitive treatment is 3% hypertonic saline to raise serum sodium by 3 to 5 mEq/L over the first few hours, while limiting total correction to 8-10 mEq/L over 24 hours to prevent osmotic demyelination syndrome.
8A 62-year-old male is undergoing robotic-assisted laparoscopic prostatectomy in 35-degree steep Trendelenburg position with carbon dioxide pneumoperitoneum at 15 mmHg. Which physiological alteration is expected under these combined surgical conditions?
A.Increased functional residual capacity and improved lung compliance
B.Decreased central venous pressure and reduced intracranial pressure
C.Decreased systemic vascular resistance and enhanced splanchnic blood flow
D.Raised intracranial and intraocular pressure with reduced pulmonary compliance
Explanation: The combination of steep Trendelenburg positioning and carbon dioxide pneumoperitoneum displaces abdominal viscera cephalad against the diaphragm, leading to a marked decrease in functional residual capacity, reduced thoracic compliance, and high airway pressures. Concurrently, cephalad venous pooling increases internal jugular venous pressure, which impedes cerebral venous outflow, significantly elevating intracranial pressure (ICP) and intraocular pressure (IOP).
9During total hip arthroplasty, immediately after the orthopedic surgeon pressurizes and inserts polymethylmethacrylate (PMMA) bone cement into the femoral canal, the patient develops sudden hypotension (BP 60/35 mmHg), hypoxemia (SpO2 86%), and a precipitously declining ETCO2 from 38 to 18 mmHg. What is the diagnosis and primary pathophysiology of this event?
A.Direct toxic histamine release caused by circulating unbound methacrylate monomer
B.Acute anaphylactic shock secondary to systemic cross-reactivity with antibiotic additives
C.BCIS from embolization of marrow, fat and air to the lungs
D.Tension pneumothorax caused by high airway pressures during mechanical ventilation
Explanation: Bone cement implantation syndrome (BCIS) typically occurs during femoral reaming, cement pressurization, and prosthesis insertion in cemented arthroplasty. Pressurization forces medullary contents (fat, bone marrow, cellular debris, air, and microthrombi) into femoral venous sinusoids, causing massive pulmonary microembolization, acute pulmonary hypertension, right ventricular strain, and sudden systemic cardiovascular collapse.
10A patient undergoing open reduction and internal fixation of a distal radius fracture has had a pneumatic tourniquet applied at 250 mmHg for 90 minutes. Upon sudden deflation of the tourniquet, what immediate systemic physiological changes are anticipated?
A.Hypertension, metabolic alkalosis, and a decrease in end-tidal carbon dioxide
B.Transient hypotension, transient rise in ETCO2, and mild metabolic acidosis
C.Profound hypercalcemia, bradycardia, and increased systemic vascular resistance
D.Sudden fall in core body temperature by 2°C with persistent hypernatremia
Explanation: Deflation of a pneumatic tourniquet releases built-up ischemic metabolites into the systemic circulation. This produces a transient decrease in systemic vascular resistance and central venous pressure (causing transient hypotension), an influx of carbon dioxide resulting in a rapid transient rise in ETCO2, and a transient metabolic (lactic) acidosis along with a slight decrease in core temperature as cold, pooled blood from the ischemic limb returns.

About the OMSB Anesthesia (OEA) Exam

The Omani Examination for Anesthesia (OEA) is the Oman Medical Specialty Board occupational classification examination conducted for anesthesia candidates applying for employment in local healthcare institutions across Oman. Delivered as a 100-question computer-based MCQ exam in English at the OMSB National Test Center or at Pearson VUE centres worldwide, the test assesses clinical readiness and patient safety. This bank provides independent OpenExamPrep practice questions organized across the 15 blueprint domains; it is not an official OMSB resource.

Exam sponsor: Oman Medical Specialty Board (OMSB), Occupational Classification Testing Section. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

100 single-best-answer MCQs in 2 hours 30 minutes across 15 domains: Anesthesia for other specialties 15%; Pharmacology 13%; Physiology 13%; Critical care 9%; Cardiovascular 6%; Clinical general anesthesia (pre-operative assessment and complications) 6%; Neuraxial 6%; Obstetric 6%; Pediatric 6%; Regional 6%; Acute pain medicine 5%; Thoracic 3%; Ethics/research/statistics 2%; Anatomy for anesthesia 2%; and Physics/monitoring/equipment 2% (each may vary by up to 5 percentage points).

Time Limit

2 hours 30 minutes

Passing Score

65%

Exam / Certification Fees

USD 220

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

15%

Anesthesia for other specialties

Specialty-specific anesthetic management including neuroanesthesia, pediatric surgery, ENT, ophthalmic, urologic, orthopedic, and plastic surgery procedures.

13%

Pharmacology

Pharmacokinetics and pharmacodynamics of intravenous and inhalational anesthetics, neuromuscular blocking agents, reversals, local anesthetics, analgesics, and autonomic drugs.

13%

Physiology

Cardiovascular, respiratory, neuro, renal, hepatic, endocrine, and acid-base physiology relevant to perioperative anesthesia management.

9%

Critical care

Resuscitation, shock management, sepsis, mechanical ventilation, acid-base imbalances, multi-organ dysfunction, and hemodynamic monitoring.

6%

Cardiovascular

Anesthetic management of coronary artery disease, valvular heart disease, arrhythmias, heart failure, and perioperative cardiovascular hemodynamic optimization.

6%

Clinical general anesthesia (pre-operative assessment and complications)

Preoperative evaluation, airway risk stratification, perioperative complications such as aspiration, anaphylaxis, malignant hyperthermia, and post-anesthesia care.

6%

Neuraxial

Spinal and epidural anesthesia techniques, spinal anatomy, physiological effects, post-dural puncture headache, and neuraxial complications.

6%

Obstetric

Maternal and fetal physiology, labor analgesia, anesthetic management for cesarean delivery, and obstetric emergencies including hemorrhage and preeclampsia.

6%

Pediatric

Anatomical and physiological distinctions of infants and children, pediatric airway management, fluid therapy, pharmacology, and congenital conditions.

6%

Regional

Peripheral nerve blocks of the upper and lower extremities, trunk blocks, ultrasound guidance techniques, and local anesthetic systemic toxicity (LAST).

5%

Acute pain medicine

Multimodal systemic analgesia, patient-controlled analgesia (PCA), regional analgesic infusions, neuropathic pain management, and non-opioid adjuvants.

3%

Thoracic

One-lung ventilation, lung isolation devices (double-lumen tubes, bronchial blockers), mediastinal masses, and hypoxic pulmonary vasoconstriction.

2%

Ethics/research/statistics

Informed consent, patient autonomy, research ethics, study designs, statistical testing, and evidence-based clinical practice.

2%

Anatomy for anesthesia

Upper airway anatomy, peripheral and cranial nerve pathways, and spinal cord and vascular anatomy relevant to anesthesia procedures.

2%

Physics/monitoring/equipment

Anesthesia machine function, vaporizers, breathing circuits, electrical safety, capnography, pulse oximetry, and invasive pressure monitoring.

Preparing for the OMSB Anesthesia (OEA) Exam

What You Need to Know

  • Passing score: 65%
  • Assessment: 100 single-best-answer MCQs in 2 hours 30 minutes across 15 domains: Anesthesia for other specialties 15%; Pharmacology 13%; Physiology 13%; Critical care 9%; Cardiovascular 6%; Clinical general anesthesia (pre-operative assessment and complications) 6%; Neuraxial 6%; Obstetric 6%; Pediatric 6%; Regional 6%; Acute pain medicine 5%; Thoracic 3%; Ethics/research/statistics 2%; Anatomy for anesthesia 2%; and Physics/monitoring/equipment 2% (each may vary by up to 5 percentage points).
  • Time limit: 2 hours 30 minutes
  • Exam / certification fees: USD 220 Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

OMSB Anesthesia (OEA): Suggested Study Strategy

1Prioritize high-yield domains: Subspecialty anesthesia (15%), pharmacology (13%), physiology (13%), and critical care (9%) make up 50% of the entire examination.
2Review core pharmacology thoroughly, focusing on intravenous induction agents, volatile anesthetics, muscle relaxants and their reversal agents, and local anesthetic systemic toxicity.
3Master clinical scenarios across obstetrics, pediatrics, and neuraxial/regional techniques, including physiological changes in pregnancy, pediatric airway anatomy, and ultrasound-guided nerve localization.
4Base revision on the recommended standard texts referenced in the OMSB booklet: Miller's Anesthesia, Stoelting's Anesthesia and Co-existing Disease, and Barash's Handbook for Clinical Anesthesia.

Frequently Asked Questions

What is the official name of the OMSB anesthesia exam?

OMSB designates this exam the Omani Examination for Anesthesia (OEA). It is an occupational classification examination conducted for anesthesia candidates seeking employment in healthcare institutions in Oman.

How many questions are on the OEA, and what is the time limit?

The OEA consists of 100 single-best-answer multiple-choice questions administered over 2 hours and 30 minutes, according to OMSB's August 2025 booklet.

What is the passing score and fee for the OEA?

The passing score is 65% and the examination fee is USD 220 paid through Pearson VUE. Candidates receive results via email within 24 hours of completing the test.

Who is eligible to take the OEA exam?

Eligibility criteria are classified as not published in the official booklet. Candidates must register through the OMSB Occupational Classification Testing Section before scheduling an appointment on Pearson VUE.

Where can candidates take the OEA exam?

Candidates residing in Oman take the exam at the OMSB National Test Center located at Innovation Park Muscat. Candidates residing outside Oman can take it at authorized Pearson VUE test centres worldwide.

Is this practice question bank an official OMSB resource?

No. This question bank provides independent OpenExamPrep practice questions on the 15 topic areas published in the OMSB examination blueprint. For official curriculum guidelines and examination booking, visit omsb.gov.om and pearsonvue.com/omsb.