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  • Question 1 - A 80 yr. old male was found on the floor. His blood pressure...

    Incorrect

    • A 80 yr. old male was found on the floor. His blood pressure was 100/60 mmHg. His core temperature was 31ºC. His FBC and serum electrolytes were within normal limits. Which of the following would be found in his ECG?

      Your Answer: Second degree heart block

      Correct Answer: Long QT interval

      Explanation:

      Hypothermia is defined as a core body temperature of < 35 °C.
      Hypothermia may produce the following ECG changes:
      -Bradyarrhythmia
      -Osborne Waves (= J waves)
      -Prolonged PR, QRS and QT intervals
      -Shivering artefact
      -Ventricular ectopics
      -Cardiac arrest due to VT, VF or asystole

    • This question is part of the following fields:

      • Cardiology
      26.4
      Seconds

  • Question 2 - A 50 yr. old male presented with acute severe central chest pain and...

    Incorrect

    • A 50 yr. old male presented with acute severe central chest pain and acute ST elevation myocardial infarction was diagnosed. He was treated with streptokinase. 2 days later he was sweating excessively and he was found to be hypotensive. Which of the following cannot be considered as a reason for this presentation?

      Your Answer: Pulmonary embolus

      Correct Answer: Hypotensive effect of streptokinase

      Explanation:

      Hypotensive effect of streptokinase occurs during the streptokinase infusion which is usually transient. Acute mitral regurgitation due to rupture of papillary muscles, ventricular septal defects and reinfarctions (left or right) are known to cause hypotension after 24 hrs. Pulmonary embolism is less likely but cannot be excluded.

    • This question is part of the following fields:

      • Cardiology
      35.5
      Seconds

  • Question 3 - A 30 yr. old male was brought in with a history of a...

    Correct

    • A 30 yr. old male was brought in with a history of a stab injury to left chest. He was complaining of chest pain. On examination he was tachycardic, hypotensive and had an elevated JVP, pulsus paradoxus and muffled heart sounds. Respiratory examination was unremarkable. Which of the following is most probable diagnosis?

      Your Answer: Cardiac tamponade

      Explanation:

      Becks triad (hypotension, elevated systemic venous pressure, often with jugular venous distention and muffled heart sounds) is a characteristic collection of clinical findings found in cardiac tamponade. Pulsus paradoxus is also associated with it. The history and clinical findings in this scenario are compatible with the diagnosis of cardica tamponade. The normal respiratory examination excludes tension pneumothorax.

    • This question is part of the following fields:

      • Cardiology
      26.7
      Seconds

  • Question 4 - A 62 yr. old male presented with worsening breathlessness and fatiguability. On examination...

    Correct

    • A 62 yr. old male presented with worsening breathlessness and fatiguability. On examination there was bilateral ankle swelling and pulsatile liver. Auscultation revealed a pansystolic murmur best heard at the lower left sternal border. Which of the following is the most probable diagnosis?

      Your Answer: Tricuspid regurgitation

      Explanation:

      All the clinical features are suggestive of tricuspid regurgitation. The pansystolic murmur of mitral regurgitation is best heard at the apex.

    • This question is part of the following fields:

      • Cardiology
      29.1
      Seconds

  • Question 5 - A 40 yr. old female presented with palmar xanthomas and tuberoeruptive xanthomas on...

    Incorrect

    • A 40 yr. old female presented with palmar xanthomas and tuberoeruptive xanthomas on her elbows and knees. Which of the following is the most probable diagnosis?

      Your Answer: Type IV hyperlipoproteinaemia

      Correct Answer: Type III hyperlipoproteinaemia

      Explanation:

      Palmar xanthomas and tuberoeruptive xanthomas are found in type III hyperlipoproteinemia (dysbetalipoproteinemia,broad-beta disease, remnant removal disease)

    • This question is part of the following fields:

      • Cardiology
      15.7
      Seconds

  • Question 6 - A 60 yr. old male with no past medical history presented to Casualty...

    Incorrect

    • A 60 yr. old male with no past medical history presented to Casualty with acute chest pain. ST elevation myocardial infarction (STEMI) is diagnosed following an ECG on arrival. He was subsequently successfully thrombolysed. Which of the following combinations of drugs is the most suitable combination for him to be taking 4 weeks after his STEMI?

      Your Answer: ACE inhibitor + beta-blocker + statin + aspirin

      Correct Answer: ACE inhibitor + beta-blocker + statin + aspirin + clopidogrel

      Explanation:

      According to NICE guidelines (2013) all people who have had an acute MI, treatment should be offered with ACE inhibitor, dual antiplatelet therapy (aspirin plus a second antiplatelet agent), beta-blocker and a statin.

    • This question is part of the following fields:

      • Cardiology
      45.9
      Seconds

  • Question 7 - A 55 yr. old female with a history of hypertension presented with severe...

    Incorrect

    • A 55 yr. old female with a history of hypertension presented with severe central chest pain for the past one hour, associated with sweating and vomiting. Her ECG showed ST elevation myocardial infarction, evident in leads V2-V4. Which of the following is an absolute contraindication for thrombolysis?

      Your Answer:

      Correct Answer: Intracranial neoplasm

      Explanation:

      Absolute contraindications for fibrinolytic use in STEMI

      Prior intracranial haemorrhage (ICH)
      Known structural cerebral vascular lesion
      Known malignant intracranial neoplasm
      Ischemic stroke within 3 months
      Suspected aortic dissection
      Active bleeding or bleeding diathesis (excluding menses)
      Significant closed head trauma or facial trauma within 3 months
      Intracranial or intraspinal surgery within 2 months
      Severe uncontrolled hypertension (unresponsive to emergency therapy)
      For streptokinase, prior treatment within the previous 6 months

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 8 - A 85 yr. old male with a history of hypertension presented with a...

    Incorrect

    • A 85 yr. old male with a history of hypertension presented with a couple of pre-syncopal episodes. He describes these episodes as him having felt as if he was going to faint and he has had to sit down. There were no precipitating factors, associated chest pain or palpitations. He doesn't have chest pain, shortness of breath on exertion, orthopnoea or paroxysmal nocturnal dyspnoea. On examination he looked well. Blood pressure was 140/80 mmHg and pulse rate was 78 bpm which was irregular. His lungs were clear and heart sounds were normal. ECG showed sinus rhythm with occasional ventricular ectopic beats. Which of the following is an indication for permanent pacemaker implantation?

      Your Answer:

      Correct Answer: Second-degree block associated with symptoms

      Explanation:

      Indications for permanent pacemaker implantation

      -Sinus node dysfunction
      -Acquired Atrioventricular(AV) block (Complete third-degree AV block with or without symptoms, Symptomatic second degree AV block, Mobitz type I and II, Exercise-induced second or third degree AV block in the absence of myocardial infarction, Mobitz II with widened QRS complex)
      -Chronic bifascicular block
      -After acute phase of myocardial infarction
      -Neurocardiogenic syncope and hypersensitive carotid sinus syndrome
      -Post cardiac transplantation
      -Hypertrophic cardiomyopathy
      -Pacing to detect and terminate tachycardia
      -Cardiac resynchronization therapy in patients with severe systolic heart failure
      -Patients with congenital heart disease

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 9 - A 72 yr. old male presented to the Emergency Department with a broad...

    Incorrect

    • A 72 yr. old male presented to the Emergency Department with a broad complex tachycardia. Which of the following features is more suggestive that this has resulted because of a supraventricular tachycardia (SVT) rather than a ventricular tachycardia (VT)?

      Your Answer:

      Correct Answer: Absence of QRS concordance in chest leads on ECG

      Explanation:

      To differentiate ventricular tachycardia (VT) from supraventricular tachycardia (SVT) with aberrant conduction the following electrocardiographic features should be looked for:

      Evidence of preceding atrial activity for SVT. Oesophageal leads are helpful if P waves are hidden in the QRS complex.
      QRS duration more than 140 ms for VT.
      QRS morphology: Features of QRS morphology that favour SVT are RBBB or triphasic patterns like rSR in V1 and qRS in V6. Monophasic pattern like R or qR in V1 and rS or QS in V6 or multiple morphology QRS complexes favour VT.
      AV dissociation for VT.

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 10 - A 28 yr. old primigravida in her 24th week of pregnancy presented with...

    Incorrect

    • A 28 yr. old primigravida in her 24th week of pregnancy presented with a history of palpitations, which are fast and regular. She doesn't complain of any episodes of collapse. On examination she was well, pulse rate was 102 bpm, which was regular and her blood pressure was 110/70 mmHg. Her JVP was not elevated. Heart sounds were normal. ECH showed sinus tachycardia. Which of the following can be expected because of the  physiological changes which occur in the boy during pregnancy?

      Your Answer:

      Correct Answer: Tachycardia

      Explanation:

      The cardiovascular alterations which occur during pregnancy are for the optimal growth and development of the foetus and help to protect the mother from the risks of delivery, such as haemorrhage. The changes are characterized by an increased vascular volume, cardiac output, and heart rate, with a marked fall in vascular resistance and reduction in blood pressure.

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 11 - A 65 yr. old heavy smoker presented with acute central chest pain for...

    Incorrect

    • A 65 yr. old heavy smoker presented with acute central chest pain for 2 hours. Which of the following ECG findings is an indication for thrombolysis in this patient?

      Your Answer:

      Correct Answer: 1 mm ST elevation in 2 limb leads

      Explanation:

      Thrombolytic therapy is indicated in patients with evidence of ST-segment elevation MI (STEMI) or presumably new left bundle-branch block (LBBB) presenting within 12 hours of the onset of symptoms if there are no contraindications to fibrinolysis. STEMI is defined as new ST elevation at the J point in at least two contiguous leads of 2 mm (0.2 mV) or more in men or 1.5 mm (0.15 mV) in women in leads V2-V3 and/or 1 mm (0.1 mV) or more in other contiguous limb leads.

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 12 - A 55 yr. old male with a history of myocardial infarction 4 years...

    Incorrect

    • A 55 yr. old male with a history of myocardial infarction 4 years ago, was admitted with a history of fever for the past 2 weeks. On investigation, his echocardiography revealed a small vegetation around the mitral valve. His blood culture was positive for Streptococcus viridans. Which of the following is the most appropriate antibiotic therapy?

      Your Answer:

      Correct Answer: IV benzylpenicillin

      Explanation:

      According to the American Heart Association (AHA) penicillin-susceptible S viridans, S bovis, and other streptococci (MIC of penicillin of ≤0.1 mcg/mL) should be treated with penicillin G or ceftriaxone or penicillin G + a gentamicin combination or vancomycin (if allergy to penicillin).

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 13 - A 52 yr. old female who was a smoker, with a history of...

    Incorrect

    • A 52 yr. old female who was a smoker, with a history of asymptomatic atrial septal defect (ASD) presented with difficulty in breathing on exertion and ankle oedema for the past 2 weeks. She has defaulted on her follow up for ASD. On examination she was cyanosed and clubbing was noted. Her pulse rate was 92 and blood pressure was 100/60 mmHg. Echocardiography revealed a dilated right ventricle of the heart. The right ventricular pressure was 90 mmHg. Significant tricuspid and pulmonary regurgitation were also noted. Which of the following is the most probable diagnosis?

      Your Answer:

      Correct Answer: Eisenmenger’s syndrome

      Explanation:

      According to echocardiography findings pulmonary pressure is closer to systemic blood pressure and it is evidence of pulmonary hypertension. Because of the reversal of shunt due to pulmonary hypertension, cyanosis and clubbing have developed. So the most probable diagnosis is Eisenmenger’s syndrome.

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 14 - A 65 yr. old man with hypertension presented with sudden onset right arm...

    Incorrect

    • A 65 yr. old man with hypertension presented with sudden onset right arm weakness which resolved after 10 hrs. He has had 2 similar episodes during the last 6 weeks. On examination his blood pressure was 140/80 mmHg and pulse rate was 88 bpm. His ECG showed atrial fibrillation and the CT scan of his brain was normal. Which of the following is the most appropriate management for this patient?

      Your Answer:

      Correct Answer: Warfarin

      Explanation:

      CHA₂DS₂-VASc score is used for atrial fibrillation stroke risk calculation.
      Congestive heart failure – 1 point
      Hypertension – 1 point
      Age ≥75 years – 2 points
      Diabetes mellitus – 1 point
      Stroke/Transient Ischemic Attack/Thromboembolic event – 2 points
      Vascular disease (prior MI, PAD, or aortic plaque) – 1 point
      Age 65 to 74 years – 1 point
      Sex category (i.e., female sex) – 1 point
      Score of 2 or more is considered as high risk and anticoagulation is indicated. This patient’s score is 4, so he needs life-long warfarin to prevent a stroke.

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 15 - A 60 yr. old previously well male patient was admitted with acute severe...

    Incorrect

    • A 60 yr. old previously well male patient was admitted with acute severe central chest pain associated with excessive sweating and nausea for the past 45 minutes. On examination he was found to have xanthelasma. His blood pressure was 170/100 mmHg and pulse rate was 104 bpm. His ECG showed ST elevation more than 2mm in leads II, III and aVF. His troponin T was 120 ng/ml. His FBC and renal functions were normal. He was given aspirin, clopidogrel, morphine and IV 5mg of atenolol. Which of the following is the most appropriate next step?

      Your Answer:

      Correct Answer: Immediate referral to cardiologist for primary angioplasty

      Explanation:

      The diagnosis is acute inferior ST elevation myocardial infarction so the most appropriate management is primary angioplasty.

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 16 - A 26 yr. old male was being investigated further following several hypertensive episodes....

    Incorrect

    • A 26 yr. old male was being investigated further following several hypertensive episodes. There was a marked difference in his systolic blood pressures between the right brachial and the right femoral arteries. Which of the following is most probable diagnosis?

      Your Answer:

      Correct Answer: Coarctation of the aorta

      Explanation:

      From the given physical findings (the difference in BP between the radial and femoral arteries), the most probable diagnosis is coarctation of the aorta.

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 17 - A 60 yr. old male patient with NSTEMI was started on low dose...

    Incorrect

    • A 60 yr. old male patient with NSTEMI was started on low dose aspirin as secondary prevention. Which of the following, describe the action of aspirin as an antiplatelet agent?

      Your Answer:

      Correct Answer: Inhibits the production of thromboxane A2

      Explanation:

      The antithrombotic action of aspirin is due to inhibition of platelet function by acetylation of the platelet cyclooxygenase (COX) at the functionally important amino acid serine529. This prevents the access of the substrate (arachidonic aid) to the catalytic site of the enzyme at tyrosine385 and results in an irreversible inhibition of platelet-dependent thromboxane formation.

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 18 - A 28 yr. old male was admitted with palpitations and chest discomfort for...

    Incorrect

    • A 28 yr. old male was admitted with palpitations and chest discomfort for the past 1 hour. On examination his pulse rate was 200 bpm and blood pressure was 80/50 mmHg. His ECG revealed narrow complex tachycardia with a heart rate of 200 bpm. Which of the following is the most appropriate management of this patient?

      Your Answer:

      Correct Answer: Synchronised DC synchronised cardioversion

      Explanation:

      Narrow complex tachycardia with hypotension is a medical emergency. Immediate synchronized cardioversion is the ideal management.

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 19 - A 30 yr. old male patient presented with palpitations that occur randomly at...

    Incorrect

    • A 30 yr. old male patient presented with palpitations that occur randomly at rest. There have however been episodes of fast palpitations and dizziness on exertion. On examination there was a systolic murmur at the apex as well as a prominent apex beat and the chest was clear. Which of the following is LEAST likely to suggest a diagnosis of hypertrophic cardiomyopathy?

      Your Answer:

      Correct Answer: A history of hypertension for 10 years

      Explanation:

      Hypertrophic cardiomyopathy is an autosomal dominant condition. Patients present with sudden cardiac death, dyspnoea, syncope and presyncope, angina, palpitations, orthopnoea and paroxysmal nocturnal dyspnoea, Congestive heart failure and dizziness. Physical findings include double or triple apical impulse, prominent a wave in the JVP, an ejection systolic crescendo-decrescendo murmur and a holosystolic murmur at the apex and axilla of mitral regurgitation.
      ECG shows ST-T wave abnormalities and LVH, axis deviation (right or left), conduction abnormalities (P-R prolongation, bundle-branch block), sinus bradycardia with ectopic atrial rhythm, atrial enlargement, abnormal and prominent Q wave in the anterior precordial and lateral limb leads.
      2D echocardiography shows abnormal systolic anterior leaflet motion of the mitral valve, LVH, left atrial enlargement, small ventricular chamber size, septal hypertrophy with septal-to-free wall ratio greater than 1.4:1, mitral valve prolapse and mitral regurgitation, decreased midaortic flow, partial systolic closure of the aortic valve in midsystole

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 20 - A 70 yr. old man underwent temporary transvenous pacing. While in the coronary...

    Incorrect

    • A 70 yr. old man underwent temporary transvenous pacing. While in the coronary care unit he developed pre-syncope. His pulse rate was 30 bpm. His ECG showed pacing spikes which were not related to QRS complexes. What is the most appropriate action that can be taken?

      Your Answer:

      Correct Answer: Increase the pacing voltage to a maximum

      Explanation:

      Pacemaker spikes on the ECG indicate that pacemaker is functioning. The most probable cause for this presentation is the change of the position of the tip of the pacing wire. Increasing the voltage will solve the problem. If it works, repositioning of the pacing wire should be done.

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 21 - A 85 yr. old previously well man was found to have a BP...

    Incorrect

    • A 85 yr. old previously well man was found to have a BP of 155/90 mmHg. His average reading from the monitoring of his ambulatory BP was 147/92 mmHg. His calculated 10 year cardiovascular risk was 15%. Which of the following is the most appropriate management of this patient?

      Your Answer:

      Correct Answer: Give lifestyle advice and repeat blood pressure in 6 months

      Explanation:

      According to different guidelines for patients above 80 years, the targeted systolic blood pressure varies from 140-150 mmHg. As this patient’s BP is within that range, he can be kept under observation.

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 22 - Which of the following is not an indication for an implantable cardiac defibrillator?...

    Incorrect

    • Which of the following is not an indication for an implantable cardiac defibrillator?

      Your Answer:

      Correct Answer: Wolff-Parkinson White syndrome

      Explanation:

      Class I indications (i.e., the benefit greatly outweighs the risk, and the treatment should be administered): -Structural heart disease, sustained VT
      -Syncope of undetermined origin, inducible VT or VF at electrophysiologic study (EPS)
      -Left ventricular ejection fraction (LVEF) ≤35% due to prior MI, at least 40 days post-MI, NYHA class II or III
      -LVEF ≤35%, NYHA class II or III
      -LVEF ≤30% due to prior MI, at least 40 days post-MI
      -LVEF ≤40% due to prior MI, inducible VT or VF at EPS

      Class IIa indications (i.e., the benefit outweighs the risk and it is reasonable to administer the treatment):
      -Unexplained syncope, significant LV dysfunction, nonischaemic cardiomyopathy
      -Sustained VT, normal or near-normal ventricular function
      -Hypertrophic cardiomyopathy with 1 or more major risk factors
      -Arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVD/C) with 1 or more risk factors for sudden cardiac death (SCD)
      -Long QT syndrome, syncope or VT while receiving beta-blockers
      -Nonhospitalized patients awaiting heart transplant
      -Brugada syndrome, syncope or VT
      -Catecholaminergic polymorphic VT, syncope or VT while receiving beta-blockers
      -Cardiac sarcoidosis, giant cell myocarditis, or Chagas disease

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 23 - A 25 yr. old male presented with acute severe central chest pain which...

    Incorrect

    • A 25 yr. old male presented with acute severe central chest pain which radiated backwards between his scapulae. He didn't have difficulty in breathing and the pain wasn't exacerbated by deep inspiration or a change in position. His father had died due to a heart disease when he was small. He also has a cardiac murmur which was never properly investigated. On examination he was tachycardic with a BP of 165/60 mmHg. There was a diastolic murmur at lower left sternal border which is best heard with the patient sitting forward. Which of the following is the most probable cause for his chest pain?

      Your Answer:

      Correct Answer: Aortic dissection

      Explanation:

      The most probable diagnosis is Marfan’s syndrome because of a family history of cardiac death and heart murmurs. A characteristic feature is pain which radiates to the back. A wide pulse pressure and a diastolic heart murmur is suggestive of aortic dissection.

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 24 - A 54 yr. old heavy smoker presented with acute chest pain for 3...

    Incorrect

    • A 54 yr. old heavy smoker presented with acute chest pain for 3 hrs which associated with excessive sweating and vomiting. His past medical history was unremarkable but his father has passed away due to a heart attack at the age of 50. Examination findings were normal and ECG was also normal. He was pain free after 12 hours from admission. What is the most appropriate investigation that cab be done at this moment?

      Your Answer:

      Correct Answer: Troponin T

      Explanation:

      The positive family history and the smoking make him an ideal candidate for a myocardial infarction. The chest pain is also a suggestive symptom. So troponin is needed to rule out MI.

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 25 - A 55 yr. old man presented with retrosternal chest pain associated with excessive...

    Incorrect

    • A 55 yr. old man presented with retrosternal chest pain associated with excessive sweating and vomiting. On examination his BP was 100/60 mmHg and pulse rate was 72 bpm. Bibasal crepitations were auscultated. His ECG showed ST elevation in V1 to V4 and ST depression in leads II, III and aVF. Which of the following would be the finding during angioplasty?

      Your Answer:

      Correct Answer: Complete occlusion of the left anterior descending artery

      Explanation:

      The ECG findings are suggestive of anterior myocardial infarction and the most likely artery affected is the left anterior descending artery. Occlusion of the right coronary artery will be shown by ST elevation in lead II, III, aVF and occlusion of the circumflex artery will show changes in leads I, aVL, V5 and V6. To have ST elevation, there should be complete occlusion of the artery.

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 26 - A 60 yr. old man with previous history of myocardial infarction and hypertension...

    Incorrect

    • A 60 yr. old man with previous history of myocardial infarction and hypertension presented with severe retrosternal chest pain for the past 2 hours. During initial management he collapsed and pulseless ventricular tachycardia was detected. The external defibrillator arrived in 3 minutes. From the following answers, what is the most appropriate immediate management of this patient?

      Your Answer:

      Correct Answer: He should be given a precordial thump

      Explanation:

      A precordial thumb is not routinely recommended because of its very low success rate for cardioversion of a shockable rhythm. It’s only recommended when there is a delay in getting the defibrillator.

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 27 - Which of the following indicates the opening of tricuspid valve in jugular venous...

    Incorrect

    • Which of the following indicates the opening of tricuspid valve in jugular venous waveform?

      Your Answer:

      Correct Answer: y descent

      Explanation:

      The a wave indicates atrial contraction. The c wave indicates ventricular contraction and the resulting bulging of tricuspid valve into the right atrium during isovolumetric systole. The v wave indicates venous filling. The x descent indicates the atrium relaxation and the movement of the tricuspid valve downward. The y descent indicates the filling of the ventricle after tricuspid opening.

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 28 - A 25 yr. old female presented with a history of sudden collapse. She...

    Incorrect

    • A 25 yr. old female presented with a history of sudden collapse. She had been playing netball and had suddenly collapsed. This collapse had been accompanied by a brief period of loss of consciousness. She experienced palpitations for a brief period prior to losing consciousness. On examination her BP was 120/70 mmHg and pulse rate was 72 bpm, which was regular. The rest of the examination was also normal. She had similar experience of collapse, about two years ago. She was well except for these two incidents and she has not been on any medication. All the investigations done at the first presentation (2 years ago), including FBC, ECG and echocardiography were normal. Her ECG done at this presentation revealed QT prolongation of 0.50 s. FBC, CXR and other investigations were normal. Which of the following is the best way of managing this patient?

      Your Answer:

      Correct Answer: Start on a beta-blocker

      Explanation:

      Beta-blockers are drugs of choice for patients with LQTS. The protective effect of beta-blockers is related to their adrenergic blockade, which diminishes the risk of cardiac arrhythmias. They may also reduce the QT interval in some patients.

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 29 - A 60 yr. old previously well male was admitted with a suspected pulmonary...

    Incorrect

    • A 60 yr. old previously well male was admitted with a suspected pulmonary embolism. On examination his BP was 130/80 mmHg and pulse rate was 88 bpm. His CXR was normal. He was treated with low molecular weight heparin. Which of the following is the most appropriate initial lung investigation for this patient?

      Your Answer:

      Correct Answer: Computed tomographic pulmonary angiography

      Explanation:

      Computed tomographic pulmonary angiography (CTPA) is the standard investigative tool, used for diagnosing a pulmonary embolism. Pulmonary angiography is indicated if CTPA is not available.

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 30 - A 50 yr. old male patient with schizophrenia complained of chest pain and...

    Incorrect

    • A 50 yr. old male patient with schizophrenia complained of chest pain and palpitations. His ECG revealed torsades de pointes ventricular tachycardia. He was on thioridazine for schizophrenia. What is the most appropriate management for his presentation?

      Your Answer:

      Correct Answer: IV magnesium

      Explanation:

      Thioridazine has a quinidine-like action on the heart and is known to cause cardiac arrhythmias including prolonged PR and QT intervals and widening of QRS complexes. Intravenous magnesium sulphate is regarded as the treatment of choice for this arrhythmia.

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 31 - A 60 yr. old male smoker and a known hypertensive presented with central...

    Incorrect

    • A 60 yr. old male smoker and a known hypertensive presented with central chest pain radiating to the back. On examination he was tachycardic and hypotensive. His ECG showed inferior ST elevation and his transoesophageal echocardiogram showed a double lumen in the ascending aorta. Which of the following is the most probable diagnosis?

      Your Answer:

      Correct Answer: Dissecting aortic aneurysm

      Explanation:

      The classic history in this high risk patient is suggestive of a dissecting aortic aneurysm. His transoesophageal echocardiogram confirms the diagnosis. ST elevation in ECG is probably due to the extension of the dissection of the aorta which results in compromised coronary blood supply.

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 32 - A 32 yr. old male who was on methadone has suddenly collapsed while...

    Incorrect

    • A 32 yr. old male who was on methadone has suddenly collapsed while running and was found dead. What is the most likely cause for his death?

      Your Answer:

      Correct Answer: Prolonged QT

      Explanation:

      Methadone and cocaine can cause QT prolongation through the direct effects on the resting membrane potential. Methadone can increase QT dispersion in addition to QT interval. Methadone inhibits the Human Ether-a-go-go Related Gene (hERG) and causes QTc prolongation and development of Torsades de point. Brugada-like syndrome is another condition found in methadone users which predisposes the users to life-threatening ventricular tachycardia and sudden cardiac death.

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 33 - Which one of the following responses is the least likely to be associated...

    Incorrect

    • Which one of the following responses is the least likely to be associated with primary pulmonary hypertension?

      Your Answer:

      Correct Answer: Recurrent pulmonary embolism

      Explanation:

      Connective-tissue diseases, liver cirrhosis, exposure to anorexigens and likely other alpha-adrenergic stimulants [e.g., cocaine, amphetamines] and HIV infection are associated with primary pulmonary hypertension. Recurrent pulmonary emboli, chronic lung diseases, left heart diseases are causes for secondary pulmonary hypertension. Pulmonary vascular hypertension after use of fenfluramine is rarely reported.

    • This question is part of the following fields:

      • Cardiology
      0
      Seconds

  • Question 34 - A 30 yr. old male, who is the brother of a patient with...

    Incorrect

    • A 30 yr. old male, who is the brother of a patient with hypertrophic cardiomyopathy has come for the screening. Which of the following is the most appropriate method of screening?

      Your Answer:

      Correct Answer: Echocardiography

      Explanation:

      12-lead electrocardiography and transthoracic echocardiography are recommended as a screening method for family members of patients with HCM.

    • This question is part of the following fields:

      • Cardiology
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  • Question 35 - A 28 yr. old male was screened for hypertrophic cardiomyopathy (HOCM). His father...

    Incorrect

    • A 28 yr. old male was screened for hypertrophic cardiomyopathy (HOCM). His father has passed away recently at the age of 48 and found to have HOCM during post mortem examination. On examination of this patient his BP was 142/84 mmHg and pulse rate was 68 bpm which was regular. There was a mid systolic murmur and a double apex beat. Echocardiography showed a septal wall thickness of 3.3 cm. What is the factor most closely linked to his 20 year risk of sudden cardiac death?

      Your Answer:

      Correct Answer: Septal wall thickness of 3.3 cm

      Explanation:

      There are five prognostic factors which indicate poor prognosis in HOCM:
      -family history of HOCM-related sudden cardiac death
      -unexplained recent syncope
      -large left ventricular wall thickness (MLVWT ≥ 30 mm)
      -multiple bursts of nsVT on ambulatory electrocardiography
      -hypotensive or attenuated blood pressure response to exercise

    • This question is part of the following fields:

      • Cardiology
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  • Question 36 - A 60 yr. old female presented after an acute overdose of amiodarone. Her...

    Incorrect

    • A 60 yr. old female presented after an acute overdose of amiodarone. Her blood pressure was 110/70 mmHg and pulse rate was 35 bpm. She was given 500mcg of atropine but there was no response. Which of the following is the most appropriate next step?

      Your Answer:

      Correct Answer: Isoprenaline

      Explanation:

      Permanent pacing is not indicated as the bradycardia is reversible. Temporary pacing is the definite treatment. Isoprenaline can be used until temporary pacing is available.

    • This question is part of the following fields:

      • Cardiology
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  • Question 37 - A 60 yr. old patient with hypertension attended his regular clinic. His compliance...

    Incorrect

    • A 60 yr. old patient with hypertension attended his regular clinic. His compliance was poor. His blood pressure was 180/100 mmHg. His pulse rate was 85 bpm which was irregularly irregular. On examination there was bibasal crepitation. No murmurs were heard. What is the most likely cause for these findings?

      Your Answer:

      Correct Answer: Left ventricular hypertrophy

      Explanation:

      Left ventricular hypertrophy due to long standing hypertension is the most probable cause. The irregularly irregular pulse was suggestive of atrial fibrillation, which is due to diastolic dysfunction. Poor ventricular filling causes pulmonary congestion which manifests as bibasal crepitations.

    • This question is part of the following fields:

      • Cardiology
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  • Question 38 - A 30 yr. old male with Down's Syndrome was found to have a...

    Incorrect

    • A 30 yr. old male with Down's Syndrome was found to have a systolic murmur during routine clinical examination. Which of the following is the most common cardiac defect associated with Down's Syndrome which will explain this finding?

      Your Answer:

      Correct Answer: Endocardial cushion defect

      Explanation:

      Atrioventricular septal defect (AVSD) also known as endocardial cushion defect is the most common cardiac abnormality in Down’s Syndrome.

    • This question is part of the following fields:

      • Cardiology
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  • Question 39 - A 50 yr. old male with a history of type II diabetes mellitus...

    Incorrect

    • A 50 yr. old male with a history of type II diabetes mellitus and hypertension presented with exertional dyspnoea and chest pain for 2 weeks. On examination his blood pressure was 145/80 mmHg. On auscultation reversed splitting of the second heart sound and bibasal crepitations were detected. What would be the most likely finding on his ECG?

      Your Answer:

      Correct Answer: Left bundle branch block

      Explanation:

      When closure of the pulmonary valve occurs before the aortic valve, reversed splitting occurs. The causes of reversed splitting are aortic stenosis, hypertrophic cardiomyopathy, left bundle branch block (LBBB), and a ventricular pacemaker.

    • This question is part of the following fields:

      • Cardiology
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  • Question 40 - What is correct statement regarding pulsus alternans? ...

    Incorrect

    • What is correct statement regarding pulsus alternans?

      Your Answer:

      Correct Answer: It is found in association with a third heart sound

      Explanation:

      Pulsus alternans is the alternation of one strong and one weak beat without a change in the cycle length. It occurs most commonly in heart failure due to increased resistance to LV ejection, as occurs in hypertension, aortic stenosis, coronary atherosclerosis, and dilated cardiomyopathy. Pulsus alternans is usually associated with an S3 gallop, which is associated with a poor prognosis. It usually disappears with treatment of the heart failure.

    • This question is part of the following fields:

      • Cardiology
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SESSION STATS - PERFORMANCE PER SPECIALTY

Cardiology (2/6) 33%
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