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Free Practice Questions for Iraqi Board Thoracic & Cardiovascular Surgery

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Key Facts: Iraqi Board Thoracic & Cardiovascular Surgery Exam

F.I.B.M.S.

Credential Awarded

60%

Written Pass Standard

3 Stages

Primary, Mid-Term, Final

English

Examination Language

The Iraqi Board of Thoracic & Cardiovascular Surgery certification is governed by the Scientific Council of Thoracic and Cardiovascular Surgery under the Iraqi Board for Medical Specializations (IBMS / المجلس العراقي للاختصاصات الطبية) and MOHESR. The pathway features structured residency training, a Primary Examination (basic surgical sciences and fundamentals, pass mark 60%), a Mid-term clinical/OSCE evaluation in Year 4, and a Final Board Examination comprising a two-day written MCQ/EMQ exam (pass mark 60% per paper), a clinical OSCE/viva examination, and thesis defense. Note that the full board credential requires clinical operative training and practical assessment; this 100-question practice bank is an independent English-language preparation resource focused exclusively on the theoretical written knowledge base tested across Part 1 and Part 2.

Sample Iraqi Board Thoracic & Cardiovascular Surgery Practice Questions

Try these sample questions to review concepts for the Iraqi Board Thoracic & Cardiovascular Surgery exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1During median sternotomy and initiation of cardiopulmonary bypass for coronary artery bypass grafting, the surgeon introduces a finger into the transverse pericardial sinus to encircle the ascending aorta. Which anatomical structures form the anterior and posterior boundaries of this surgical space?
A.Ascending aorta and pulmonary trunk anteriorly; superior vena cava and left atrium posteriorly
B.Superior vena cava anteriorly; right pulmonary veins and inferior vena cava posteriorly
C.Right and left pulmonary arteries anteriorly; esophagus and descending aorta posteriorly
D.Pulmonary trunk and left atrium anteriorly; inferior vena cava posteriorly
Explanation: The transverse pericardial sinus lies behind the arterial outflow tract (ascending aorta and pulmonary trunk) and in front of the venous inflow tract (superior vena cava, right and left atria, and pulmonary veins). Passing an index finger through this sinus allows rapid, safe placement of an aortic cross-clamp or an aortic tape without vascular injury.
2A cardiothoracic surgeon is placing a retrograde cardioplegia catheter through a right atriotomy. The cannula must enter the coronary sinus ostium located in the inferior aspect of the right atrium. What anatomical landmark or valve guards this ostium, and what is the primary risk of aggressive blind instrumentation?
A.Eustachian valve; laceration of the inferior vena cava junction
B.Thebesian valve; perforation of the thin posterior coronary sinus wall into the pericardial space
C.Tendon of Todaro; laceration of the membranous ventricular septum
D.Valve of Vieussens; avulsion of the anterior interventricular vein
Explanation: The ostium of the coronary sinus is guarded by the Thebesian valve (valvula sinus coronarii), a semilunar fold of endocardium. Aggressive, forceful, or blind advancement of a retrograde cannula can rupture this thin-walled structure, causing severe hemorrhage into the posterior transverse sinus or pericardial space requiring complex surgical repair.
3During tricuspid valve annuloplasty for functional tricuspid regurgitation, the surgeon must strictly avoid placing sutures in the apex of the Triangle of Koch. Which boundaries delineate this critical triangular zone, and what conduction structure resides at its apex?
A.Tendon of Todaro, septal tricuspid leaflet hinge line, and coronary sinus ostium; containing the atrioventricular (AV) node
B.Terminal crest, oval fossa rim, and inferior vena cava orifice; containing the sinoatrial (SA) node
C.Anterior tricuspid leaflet, membranous septum, and right bundle branch; containing the penetrating His bundle
D.Medial papillary muscle, Eustachian ridge, and Koch's ligament; containing the Bachmann bundle
Explanation: The Triangle of Koch is bounded by the tendon of Todaro superiorly, the hinge line of the septal leaflet of the tricuspid valve inferiorly/anteriorly, and the ostium of the coronary sinus posteriorly. The compact atrioventricular (AV) node is located at the apex of this triangle where the tendon of Todaro meets the central fibrous body; deep sutures placed here cause complete heart block.
4A 62-year-old male is scheduled for elective aortic valve replacement. Before aortic cannulation and initiation of cardiopulmonary bypass (CPB), systemic heparin is administered at 300-400 units/kg. What is the molecular mechanism of unfractionated heparin, and what target Activated Clotting Time (ACT) is mandatory prior to bypass initiation?
A.Direct inhibition of factor Xa; target ACT >250 seconds
B.Irreversible blockade of thrombin receptor PAR-1; target ACT >300 seconds
C.Potentiation of antithrombin III activity against thrombin and factor Xa; target ACT >400-480 seconds
D.Chelation of ionized calcium in the common coagulation pathway; target ACT >600 seconds
Explanation: Unfractionated heparin binds to antithrombin III (ATIII), inducing a conformational change that accelerates its inhibition of thrombin (Factor IIa) and Factor Xa by over 1,000-fold. On cardiopulmonary bypass, an ACT greater than 400 to 480 seconds is required to prevent widespread microvascular and circuit clotting during contact with synthetic surfaces.
5A 58-year-old patient with non-ST-elevation myocardial infarction who has been receiving an intravenous unfractionated heparin infusion for 4 days is in the operating room for urgent CABG. After receiving a standard bolus of 300 IU/kg of heparin, the baseline ACT of 140 seconds increases only to 280 seconds. A repeat bolus of 100 IU/kg raises the ACT to only 310 seconds. What is the most likely cause, and what is the definitive immediate management?
A.Heparin-induced thrombocytopenia; administer argatroban bolus and infusion
B.Acquired antithrombin III deficiency; administer 2 units of Fresh Frozen Plasma (FFP) or purified antithrombin concentrate
C.Severe factor VIII deficiency; administer recombinant factor VIIa
D.Protamine contamination in the CPB circuit; flush the circuit with normal saline
Explanation: Prolonged pre-operative heparin therapy consumes circulating antithrombin III (ATIII), leading to heparin resistance where heparin cannot achieve the target ACT (>400-480 seconds). The definitive treatment is replenishing ATIII by administering 2 units of fresh frozen plasma (FFP) or purified human antithrombin III concentrate.
6Following uncomplicated separation from cardiopulmonary bypass, protamine sulfate is infused intravenously to neutralize heparin. Two minutes into the infusion, the patient experiences profound systemic hypotension, severe right ventricular distension, and a precipitous rise in mean pulmonary artery pressure from 22 mmHg to 55 mmHg. What is the pathophysiological mechanism of this catastrophic Type III protamine reaction?
A.Thromboxane A2 release and complement activation causing acute severe pulmonary vasoconstriction
B.Histamine-mediated peripheral systemic vasodilatation with decreased systemic vascular resistance
C.Direct depression of left ventricular myocardial beta-1 adrenergic receptors
D.Acute anaphylactic IgE-mediated bronchospasm causing hypercarbia and hypoxia
Explanation: A Type III catastrophic protamine reaction is characterized by severe pulmonary hypertension, right ventricular dilation and failure, and systemic hypotension. It is mediated by heparin-protamine complexes triggering classical complement pathway activation and massive pulmonary generation of thromboxane A2 and endothelin, leading to intense pulmonary arterial vasoconstriction.
7Del Nido cardioplegia has gained widespread acceptance in adult and pediatric cardiac surgery. Which statement accurately describes its formulation and key cellular mechanism of myocardial protection compared to conventional 4:1 blood cardioplegia?
A.It is a 4:1 blood-to-crystalloid ratio solution utilizing high potassium (30 mEq/L) to arrest the heart in systole
B.It is a 1:4 blood-to-crystalloid solution containing lidocaine and magnesium to prevent intracellular calcium overload and permit up to 90 minutes of arrest
C.It is an intracellular-type crystalloid solution completely devoid of calcium and sodium to induce electromechanical silence
D.It utilizes adenosine as the sole polarizing arrest agent and requires continuous cold re-infusion every 15 minutes
Explanation: Del Nido cardioplegia utilizes a 1:4 blood-to-crystalloid base (Plasma-Lyte A) with added potassium chloride, mannitol, magnesium sulfate, sodium bicarbonate, and lidocaine. The lidocaine (a Class Ib sodium channel blocker) and magnesium (a natural calcium antagonist) block sodium influx and prevent intracellular calcium overload, providing reliable electromechanical arrest for up to 60-90 minutes from a single dose.
8A key objective of cardioplegic arrest and systemic hypothermia on cardiopulmonary bypass is the dramatic reduction of myocardial oxygen consumption (MVO2). By approximately what percentage does the combination of electromechanical cardiac arrest and moderate hypothermia (28°C) reduce basal normothermic beating MVO2?
A.25% to 35%
B.50% to 60%
C.90% to 95%
D.10% to 15%
Explanation: Normothermic beating empty heart consumes about 5-6 mL O2/100g/min. Electromechanical arrest alone abolishes pressure-volume work and reduces MVO2 by roughly 80-85%. Combining arrest with hypothermia (28°C-32°C) reduces cellular basal metabolic rate further, yielding an overall reduction of 90% to 95% in myocardial oxygen consumption.
9During initiation of cardiopulmonary bypass, the perfusionist notes that as arterial pump flow is increased toward full support (2.4 L/min/m2), the arterial line pressure suddenly spikes to >300 mmHg while systemic radial arterial pressure falls to 35 mmHg. Simultaneously, the surgical field reveals a localized bluish discoloration and subadventitial hematoma around the ascending aortic cannulation site. What catastrophic event has occurred, and what is the immediate management?
A.Kinking of the venous reservoir line; clamp the venous line immediately
B.Acute iatrogenic aortic dissection; immediately cease pump flow, relocate the arterial cannula to the femoral or axillary artery, and re-establish perfusion
C.Air embolus into the coronary arteries; deliver retrograde blood cardioplegia
D.Protamine overdose in the pump prime; administer intravenous calcium chloride
Explanation: A high arterial line perfusion pressure paired with systemic hypotension and aortic wall hematoma/bluing pathognomonically indicates acute iatrogenic aortic dissection from the aortic cannula tip dissecting into the false lumen. The perfusionist must immediately stop pumping into the false lumen, and arterial cannulation must be urgently established at an alternate site (e.g., right axillary, femoral, or innominate artery) to restore true lumen flow.
10Which surgical cardiac procedure strictly requires bicaval cannulation with snared superior and inferior vena cavae, rather than single dual-stage (cavoatrial) venous cannulation?
A.Isolated coronary artery bypass grafting (CABG)
B.Aortic valve replacement for calcific aortic stenosis
C.Tricuspid valve repair with right atriotomy and open right heart exposure
D.Ascending aorta and hemiarch replacement for ascending aneurysm
Explanation: When opening the right heart chambers (as in tricuspid valve surgery, right atrial myxoma excision, or closure of atrial septal defects), bicaval cannulation with tourniquets/snares cinched around the SVC and IVC is mandatory. This isolates the right atrium, prevents systemic venous air entrainment into the bypass circuit, and maintains a bloodless operative field.

About the Iraqi Board Thoracic & Cardiovascular Surgery Exam

The Fellowship of the Iraqi Board for Medical Specializations (F.I.B.M.S.) in Thoracic and Cardiovascular Surgery is the premier national postgraduate surgical qualification in Iraq, certifying clinical, operative, and academic mastery across cardiac, thoracic, and vascular surgery.

Exam sponsor: Iraqi Board for Medical Specializations (IBMS) — Scientific Council of Thoracic and Cardiovascular Surgery. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Postgraduate certification under the Scientific Council of Thoracic and Cardiovascular Surgery of the Iraqi Board for Medical Specializations (IBMS) requires completion of a multi-year structured surgical residency encompassing cardiothoracic, vascular, general surgical, and intensive care rotations. Assessment proceeds in distinct milestones: the Primary Examination (Part 1) tests core surgical sciences and surgical fundamentals using single-best-answer MCQs with a 60% passing standard; the Mid-term Examination in Year 4 evaluates clinical decision-making via a slide-based exam and 8 OSCE stations; and the Final Board Examination (Part 2) comprises a rigorous two-day written examination (3 hours per session of single-best-answer and extended matching questions; pass mark 60% per paper), followed by clinical OSCE stations, operative case defense and vivas, and thesis defense. The council publishes a pass mark of 60 out of 100 for both the Primary and the Final Examination and does not publish any overall composite residency average.

Time Limit

3 hours per written session (two written papers over two consecutive days for Part 2 Final Written)

Passing Score

60 out of 100 for the Primary Examination (a single best answer paper conducted by the Scientific Council of General Surgery) and 60 out of 100 for the Final Examination, as published by the Scientific Council of Thoracic and Cardiovascular Surgery. No overall composite residency average is published.

Exam / Certification Fees

Prescribed by IBMS and Ministry of Higher Education and Scientific Research (MOHESR) regulatory bylaws and tuition schedules.

Exam sponsor website

Reported exam pass rate: Official specialty pass rates are not published publicly as a continuous series by the Iraqi Board for Medical Specializations.. The Iraqi Board for Medical Specializations does not release public annual specialty pass percentages for thoracic and cardiovascular surgery. 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.

20% of bank

Cardiothoracic Anatomy, Physiology, Pathology & Cardiopulmonary Bypass

Coronary and cardiac surgical anatomy, pulmonary segments, tracheobronchial tree, mediastinal compartments, cardiac and respiratory physiology, myocardial ischemia/reperfusion, extracorporeal circulation circuits, oxygenators, systemic heparinization, protamine reversal, and cardioplegia delivery strategies.

25% of bank

Adult Cardiac Surgery

Surgical revascularization for ischemic heart disease, on-pump and off-pump CABG, arterial and venous conduit selection, aortic valve replacement and repair, mitral valve repair and replacement, tricuspid interventions, infective endocarditis, aortic root and ascending aortic aneurysm reconstruction, and mechanical circulatory support (IABP, ECMO, VADs).

20% of bank

General Thoracic Surgery

Staging and surgical resection of non-small cell lung cancer, sleeve resections, anterior/middle/posterior mediastinal tumors, thymoma, myasthenia gravis, pleural space infections, empyema management, spontaneous and secondary pneumothorax, chest wall deformities, blunt and penetrating thoracic trauma, tracheobronchial disruption, and surgical stabilization of rib fractures.

15% of bank

Congenital Heart Disease

Pathophysiology and surgical management of simple left-to-right shunts (ASD, VSD, PDA, AVSD), cyanotic congenital anomalies, Tetralogy of Fallot complete repair and systemic-to-pulmonary shunts, transposition of the great arteries (arterial switch operation), coarctation of the aorta, aortic arch interruption, and single ventricle palliation staging.

20% of bank

Vascular Surgery & Critical Postoperative Management

Descending thoracic and thoracoabdominal aortic aneurysms and dissections (Stanford and DeBakey classifications), open and endovascular interventions (TEVAR), peripheral arterial occlusive disease, carotid artery revascularization, vascular trauma, and post-cardiotomy critical care (low cardiac output syndrome, vasoactive inotropic support, postcardiotomy bleeding, tamponade, and tachyarrhythmias).

Preparing for the Iraqi Board Thoracic & Cardiovascular Surgery Exam

What You Need to Know

  • Passing score: 60 out of 100 for the Primary Examination (a single best answer paper conducted by the Scientific Council of General Surgery) and 60 out of 100 for the Final Examination, as published by the Scientific Council of Thoracic and Cardiovascular Surgery. No overall composite residency average is published.
  • Assessment: Postgraduate certification under the Scientific Council of Thoracic and Cardiovascular Surgery of the Iraqi Board for Medical Specializations (IBMS) requires completion of a multi-year structured surgical residency encompassing cardiothoracic, vascular, general surgical, and intensive care rotations. Assessment proceeds in distinct milestones: the Primary Examination (Part 1) tests core surgical sciences and surgical fundamentals using single-best-answer MCQs with a 60% passing standard; the Mid-term Examination in Year 4 evaluates clinical decision-making via a slide-based exam and 8 OSCE stations; and the Final Board Examination (Part 2) comprises a rigorous two-day written examination (3 hours per session of single-best-answer and extended matching questions; pass mark 60% per paper), followed by clinical OSCE stations, operative case defense and vivas, and thesis defense. The council publishes a pass mark of 60 out of 100 for both the Primary and the Final Examination and does not publish any overall composite residency average.
  • Time limit: 3 hours per written session (two written papers over two consecutive days for Part 2 Final Written)
  • Exam / certification fees: Prescribed by IBMS and Ministry of Higher Education and Scientific Research (MOHESR) regulatory bylaws and tuition schedules. Official sources

Using Our Practice Resources

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Iraqi Board Thoracic & Cardiovascular Surgery: Suggested Study Strategy

1Master cardiopulmonary bypass and myocardial protection physiology: Review hypothermic arrest protocols, cardioplegia composition (extracellular vs intracellular, del Nido, blood cardioplegia), circuit prime dynamics, and management of protamine reactions and post-perfusion coagulopathies.
2Review coronary anatomy, grafting configurations, and revascularization guidelines: Understand the anatomical indications for total arterial revascularization (LIMA-LAD, bilateral internal thoracic arteries, radial artery) versus saphenous vein grafts, on-pump versus off-pump techniques, and emergency CABG criteria.
3Thoroughly learn lung cancer TNM 8th/9th edition staging and thoracic oncology margins: Focus on surgical resectability criteria, N2 nodal stations, mediastinoscopy/EBUS indications, bronchoplastic sleeve resections, and multimodal management of Pancoast tumors and thymic malignancies.
4Differentiate congenital lesions and stage-based repair timing: Understand pulmonary blood flow physiology in cyanotic versus acyanotic heart disease, timing of corrective surgery for Tetralogy of Fallot and transposition of the great arteries, Norwood/Glenn/Fontan pathway staging, and coarctation repair anatomy.
5Practice postcardiotomy critical care decision-making: Focus on hemodynamic differentiation between cardiac tamponade, right ventricular failure, vasoplegia, and left ventricular failure, including indications for inotropes, pulmonary vasodilators, intra-aortic balloon pump (IABP), and emergency resternotomy.

Frequently Asked Questions

What is the Iraqi Board of Thoracic & Cardiovascular Surgery (البورد العراقي - جراحة القلب والصدر)?

The Iraqi Board in Thoracic and Cardiovascular Surgery is the highest national postgraduate surgical qualification in Iraq, administered by the Scientific Council of Thoracic and Cardiovascular Surgery under the Iraqi Board for Medical Specializations (IBMS / المجلس العراقي للاختصاصات الطبية) and the Ministry of Higher Education and Scientific Research (MOHESR). Successful graduates are awarded the Fellowship of the Iraqi Board for Medical Specializations (F.I.B.M.S.) and certified as consultant-track cardiothoracic surgeons.

What are the components and progression of the IBMS Cardiothoracic examination pathway?

The examination pathway comprises three core evaluation milestones: (1) The Primary Examination (Part 1), sat after foundational training, testing core surgical sciences, anatomy, physiology, and pathology using single-best-answer MCQs (pass mark 60%); (2) The Mid-term Examination in Year 4, featuring 10 slide-based questions and 8 OSCE stations; and (3) The Final Board Examination (Part 2), which includes a two-day written MCQ and extended matching paper (3 hours per session, pass mark 60% per paper), followed by clinical OSCE stations, operative viva voce, and thesis defense, with an overall composite standard of 70% required by IBMS regulations.

Does this 100-question practice bank simulate the clinical OSCE or replace operative residency?

No. This practice bank is strictly an independent English-language cognitive study resource covering the core theoretical syllabus for the Part 1 and Part 2 written examination papers. It does not provide clinical OSCE station simulations, practical operative assessments, or live viva voce examinations, nor does it substitute for the multi-year supervised operative residency required by the Iraqi Board.

In what language are the Iraqi Board surgical examinations conducted?

The Iraqi Board for Medical Specializations publishes this council's curriculum, syllabus and reference list in English, and English-language proficiency appears among the admission requirements set by the Ministry. The council's published curriculum does not, however, contain any statement of the language in which the examination papers themselves are set, so no language of assessment is asserted here. Bedside clinical assessment necessarily involves communicating with Arabic-speaking patients, but the council does not publish how that is handled in the examination. This site is an independent English-language study resource and is not affiliated with, endorsed by, or connected to the Iraqi Board for Medical Specializations; candidates should confirm the language of their sitting directly with their Scientific Council.

What are the candidate eligibility requirements for entry into the IBMS Cardiothoracic training program?

Applicants must hold an MBChB or equivalent primary medical degree from an accredited medical college recognized by MOHESR, have completed a mandatory one-year foundation internship, hold permanent registration with the Iraqi Medical Association (IMA), and achieve a competitive ranking in the Iraqi national competitive entrance examination.