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Question 1
Incorrect
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A 38-year-old male presents with left-sided dull chest pain that has been present for five days. He reports no associated shortness of breath, cough, collapse, or pleuritic nature of the chest pain. The patient had a recent sore throat and headache last week, which has since resolved. There is no family history of sudden cardiac death in a first-degree relative, and the patient has never smoked.
Upon examination, the patient's blood pressure is 125/89 mmHg, heart rate is 95/min, temperature is 37.3ºC, and oxygen saturations are 97% on room air. Pulsus paradoxus is not present. Blood results reveal Hb of 154 g/L, platelets of 425 * 109/L, WBC of 11.5 * 109/L, Na+ of 137 mmol/L, K+ of 4.6 mmol/L, urea of 6.4 mmol/L, creatinine of 100 µmol/L, CRP of 40 mg/L, and Troponin T of 13 ng/L. The ECG shows ST-segment elevation in lead I, II, III, aVL, V5, and V6, and PR segment elevation in aVR.
What is the most likely diagnosis for this patient?Your Answer: Myocarditis
Correct Answer: Pericarditis
Explanation:The ECG changes in this patient suggest pericarditis, given their young age, widespread ST-segment elevation, and normal troponin levels. While PR segment depression is typically seen in pericarditis, note that the PR segment may be elevated in aVR. Myocarditis would be a possible diagnosis if the troponin levels were elevated. Infective endocarditis is less likely due to the absence of fever and ECG changes consistent with pericarditis. Although cardiac tamponade is a potential complication of pericarditis, it is unlikely in this case as the patient’s blood pressure is normal and pulsus paradoxus is not present.
Understanding Acute Pericarditis
Acute pericarditis is a medical condition characterized by inflammation of the pericardial sac that lasts for less than 4-6 weeks. The condition can be caused by various factors such as viral infections, tuberculosis, uraemia, post-myocardial infarction, autoimmune pericarditis, radiotherapy, connective tissue disease, hypothyroidism, malignancy, and trauma. Symptoms of acute pericarditis include chest pain, non-productive cough, dyspnoea, and flu-like symptoms. Patients may also experience pericardial rub.
To diagnose acute pericarditis, doctors may perform an electrocardiogram (ECG) to check for changes in the heart’s electrical activity. Blood tests may also be conducted to check for inflammatory markers and troponin levels. Patients suspected of having acute pericarditis should undergo transthoracic echocardiography.
Treatment for acute pericarditis depends on the underlying cause. Patients with high-risk features such as fever or elevated troponin levels may need to be hospitalized. However, most patients with pericarditis secondary to viral infection can be managed as outpatients. Strenuous physical activity should be avoided until symptoms resolve and inflammatory markers normalize. A combination of nonsteroidal anti-inflammatory drugs (NSAIDs) and colchicine is typically used as first-line treatment for patients with acute idiopathic or viral pericarditis. The medication is usually tapered off over 1-2 weeks.
Overall, understanding acute pericarditis is important for prompt diagnosis and appropriate management of the condition.
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This question is part of the following fields:
- Cardiovascular
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Question 2
Incorrect
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A 75 year old man with congestive cardiac failure is seen in cardiology clinic. He reports persistent shortness of breath with minimal activity. His current medications consist of furosemide, ramipril, bisoprolol, and spironolactone. An ECHO reveals an ejection fraction of 30%, while an ECG shows sinus rhythm with a QRS duration of 150ms. What is the optimal approach to enhance mortality?
Your Answer: Digoxin
Correct Answer: Cardiac resynchronisation therapy
Explanation:Heart failure patients with a left ventricular ejection fraction of less than or equal to 40% and symptoms no more severe than class III according to the New York Heart Association functional classification may benefit from digoxin in terms of reducing hospitalization. However, it does not have an impact on mortality. While increasing the dosage of furosemide may provide relief from fluid overload symptoms, it does not affect mortality.
Non-Drug Management for Chronic Heart Failure
Chronic heart failure is a condition that requires long-term management to improve symptoms and reduce hospitalization. While medication is often the first line of treatment, non-drug management options are also available. Two such options are cardiac resynchronization therapy and exercise training.
Cardiac resynchronization therapy involves biventricular pacing for patients with heart failure and wide QRS. This therapy has been shown to improve symptoms and reduce hospitalization in patients with NYHA class III heart failure. By synchronizing the heart’s contractions, this therapy can improve the heart’s pumping ability and reduce symptoms such as shortness of breath and fatigue.
Exercise training is another non-drug management option for chronic heart failure. While it may not reduce hospitalization or mortality rates, it has been shown to improve symptoms. Exercise can help improve the heart’s ability to pump blood and increase overall fitness levels. This can lead to a reduction in symptoms such as fatigue and shortness of breath, allowing patients to engage in daily activities with greater ease.
Overall, non-drug management options such as cardiac resynchronization therapy and exercise training can be effective in managing chronic heart failure. These options can improve symptoms and quality of life for patients, reducing the need for hospitalization and improving overall health outcomes.
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This question is part of the following fields:
- Cardiovascular
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Question 3
Incorrect
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An 80-year-old male presents to the low-risk chest pain clinic with intermittent substernal chest pains. The pain typically comes on with exertion and improves with rest. A trial of GTN has been given by his GP which helps with his pain. He is a known ex-smoker of 35 pack-years. He has no diabetes, hyperlipidaemia, hypertension, and no family history of coronary artery disease.
During examination, his observations are stable. On auscultations of his chest, his first and second heart sounds are audible with no added sounds and his lungs are clear.
What investigation should be prioritized given his risk for coronary artery disease?Your Answer: Stress test ECG
Correct Answer: Contrast-enhanced coronary CT angiography
Explanation:The preferred initial diagnostic test for individuals with stable chest pain suspected to be caused by coronary artery disease is a CT coronary angiogram with contrast enhancement.
Assessment of Patients with Suspected Cardiac Chest Pain
When it comes to assessing patients with suspected cardiac chest pain, NICE has updated its guidelines in 2016. For patients presenting with acute chest pain, immediate management of suspected acute coronary syndrome (ACS) is crucial. This includes administering glyceryl trinitrate and aspirin 300 mg, but not other antiplatelet agents like Clopidogrel outside of the hospital. Oxygen therapy should not be routinely given, but only if sats are less than 94%. Referral depends on the timing of chest pain and ECG results. For patients presenting with stable chest pain, NICE defines anginal pain as constricting discomfort in the front of the chest, neck, shoulders, jaw, or arms, precipitated by physical exertion, and relieved by rest or GTN in about 5 minutes. Non-invasive functional imaging is recommended for patients in whom stable angina cannot be excluded by clinical assessment alone. Examples of non-invasive functional imaging include myocardial perfusion scintigraphy with single photon emission computed tomography (MPS with SPECT), stress echocardiography, first-pass contrast-enhanced magnetic resonance (MR) perfusion, or MR imaging for stress-induced wall motion abnormalities.
In summary, assessing patients with suspected cardiac chest pain requires immediate management for acute chest pain and referral based on timing and ECG results. For stable chest pain, NICE defines anginal pain and recommends non-invasive functional imaging for patients in whom stable angina cannot be excluded by clinical assessment alone.
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This question is part of the following fields:
- Cardiovascular
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Question 4
Correct
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A 45-year-old otherwise healthy man presents to his General Practitioner (GP) with complaints of chest pain and shortness of breath on minimal exertion that have been worsening over the past few months. Investigations reveal normal angiogram and chest x-ray results, but an echocardiogram shows severe aortic stenosis. What is the most suitable management option?
Your Answer: Surgical aortic valve replacement
Explanation:Treatment Options for Aortic Stenosis
Aortic stenosis (AS) is a serious condition that requires prompt treatment. The gold standard treatment for symptomatic AS is surgical aortic valve replacement, which involves open-heart surgery and the use of mechanical or biological valves. However, for patients who are deemed too high risk for open-heart surgery, aortic balloon valvuloplasty or transcatheter aortic valve implantation (TAVI) may be considered as less invasive options.
Annual echocardiography monitoring is necessary to ensure the effectiveness of the treatment. It is important to note that oral nitrates are contraindicated in patients with AS as they can cause profound hypotension. Direct oral anticoagulants are also not licensed or indicated for the treatment of valvular heart disease. Overall, the choice of treatment depends on the patient’s individual risk factors and overall health status.
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This question is part of the following fields:
- Cardiovascular
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Question 5
Incorrect
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You are urgently requested to assess a 62-year-old female patient admitted to the cardiology ward with complaints of breathing difficulty. During the examination, you observe a raised JVP and bilateral fine crackles to the mid zones. The patient's blood pressure is 100/60 mmHg, and the pulse is irregular and ranges between 140-150. An ECG confirms atrial fibrillation, and there is no prior history of the condition in the patient's notes or previous ECGs. What is the most appropriate course of action for managing this patient?
Your Answer: Oral digoxin
Correct Answer: Urgent synchronised DC cardioversion
Explanation:Urgent synchronised DC cardioversion is necessary when heart failure is observed as an adverse sign.
Management of Peri-Arrest Tachycardias
The Resuscitation Council (UK) guidelines for the management of peri-arrest tachycardias have been simplified in the 2015 update. The previous separate algorithms for broad-complex tachycardia, narrow complex tachycardia, and atrial fibrillation have been replaced by a unified treatment algorithm. After basic ABC assessment, patients are classified as stable or unstable based on the presence of adverse signs such as hypotension, pallor, sweating, confusion, or impaired consciousness. If any of these signs are present, synchronised DC shocks should be given, up to a maximum of three shocks.
The treatment following this is based on whether the QRS complex is narrow or broad and whether the rhythm is regular or irregular. For broad-complex tachycardia, a loading dose of amiodarone followed by a 24-hour infusion is given if the rhythm is regular. If the rhythm is irregular, expert help should be sought as it could be due to atrial fibrillation with bundle branch block, atrial fibrillation with ventricular pre-excitation, or torsade de pointes.
For narrow-complex tachycardia, vagal manoeuvres followed by IV adenosine are given if the rhythm is regular. If unsuccessful, atrial flutter is considered, and rate control is achieved with beta-blockers. If the rhythm is irregular, it is likely due to atrial fibrillation, and electrical or chemical cardioversion is considered if the onset is less than 48 hours. Beta-blockers are usually the first-line treatment for rate control unless contraindicated. The full treatment algorithm can be found on the Resuscitation Council website.
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This question is part of the following fields:
- Cardiovascular
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Question 6
Incorrect
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A 70-year-old man comes to you with complaints of nocturnal dyspnea, intermittent palpitations, and chest tightness. During your examination, you observe a collapsing pulse and a displaced apex beat towards the left. Additionally, you notice his head nodding in sync with his pulse. What do you anticipate hearing upon auscultation of the precordium?
Your Answer: A late diastolic murmur
Correct Answer: An early diastolic murmur
Explanation:Aortic regurgitation is usually accompanied by an early diastolic murmur, along with Corrigan’s pulse and De Musset’s sign. Mitral regurgitation is characterized by a pansystolic murmur, while aortic stenosis is associated with an ejection systolic murmur. A patent ductus arteriosus is indicated by a continuous ‘machinery’ murmur, and mitral stenosis is associated with a late diastolic murmur.
Aortic regurgitation is a condition where the aortic valve of the heart leaks, causing blood to flow in the opposite direction during ventricular diastole. This can be caused by disease of the aortic valve or by distortion or dilation of the aortic root and ascending aorta. In the developing world, rheumatic fever is the most common cause of AR, while in developed countries, calcific valve disease and connective tissue diseases like rheumatoid arthritis and SLE are more common causes. Symptoms of AR include an early diastolic murmur, collapsing pulse, wide pulse pressure, Quincke’s sign, and De Musset’s sign. Echocardiography is used to investigate suspected AR. Management includes medical management of any associated heart failure and surgery for symptomatic patients with severe AR or asymptomatic patients with severe AR who have LV systolic dysfunction.
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This question is part of the following fields:
- Cardiovascular
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Question 7
Correct
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A 25-year-old woman presents with recurrent syncope following aerobics classes. On examination, a systolic murmur is heard that worsens with the Valsalva manoeuvre and improves on squatting. What is the most likely diagnosis?
Your Answer: Hypertrophic cardiomyopathy (HCM)
Explanation:Differentiating Causes of Syncope: A Guide
Syncope, or fainting, can be caused by a variety of underlying conditions. One such condition is hypertrophic cardiomyopathy (HCM), which often presents with syncope following exercise. Patients with HCM may also have a mid-systolic murmur and a jerky pulse, which worsens with Valsalva but improves with squatting.
Atrial fibrillation, on the other hand, typically presents with palpitations, fatigue, or shortness of breath, but not syncope. It does not cause a murmur and results in an irregularly irregular pulse.
Epilepsy is not a common cause of syncope, as typical seizures involve loss of consciousness, tensing, shaking, and postictal fatigue.
Aortic stenosis can cause dizziness and syncope, and is usually associated with angina. The murmur associated with aortic stenosis is a crescendo-decrescendo murmur that radiates to the carotids.
A vasovagal attack, while it can cause syncope, would not cause a murmur. If syncope is recurrent, other causes should be sought.
Dyspnea is a common complaint in patients with HCM, but they may also experience angina or syncope. A left ventricular apical impulse, a prominent S4 gallop, and a harsh systolic ejection murmur are typical findings. The Valsalva maneuver can increase the murmur. An echocardiogram is the diagnostic procedure of choice.
Most patients with aortic stenosis have gradually increasing obstruction for years but do not become symptomatic until their sixth to eighth decades.
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This question is part of the following fields:
- Cardiovascular
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Question 8
Incorrect
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A 26-year-old woman gives birth vaginally at 38 weeks gestation and chooses to have a physiological third stage of labor. She experiences a blood loss of 800 ml shortly after delivery. The medical team follows an ABCDE approach and starts a warmed crystalloid infusion. There is no history of medical issues or delivery-related trauma.
What should be the next course of action in managing her condition?Your Answer: Give IV oxytocin
Correct Answer: Compress the uterus and catheterise her
Explanation:To manage a postpartum haemorrhage, an ABCDE approach should be taken, with initial steps including compressing the uterus and catheterising the patient. This is known as ‘mechanical management’ and is appropriate for a primary postpartum haemorrhage (PPH) where uterine atony is the most common cause. IV warmed crystalloid should also be given. Medical management options such as IV oxytocin or IM/IV carboprost should only be considered if mechanical methods fail. It is important to note that IV carboprost should not be administered as it can lead to serious side effects.
Understanding Postpartum Haemorrhage
Postpartum haemorrhage (PPH) is a condition where a woman experiences blood loss of more than 500 ml after giving birth vaginally. It can be classified as primary or secondary. Primary PPH occurs within 24 hours after delivery and is caused by the 4 Ts: tone, trauma, tissue, and thrombin. The most common cause is uterine atony. Risk factors for primary PPH include previous PPH, prolonged labour, pre-eclampsia, increased maternal age, emergency Caesarean section, and placenta praevia.
In managing PPH, it is important to involve senior staff immediately and follow the ABC approach. This includes two peripheral cannulae, lying the woman flat, blood tests, and commencing a warmed crystalloid infusion. Mechanical interventions such as rubbing up the fundus and catheterisation are also done. Medical interventions include IV oxytocin, ergometrine, carboprost, and misoprostol. Surgical options such as intrauterine balloon tamponade, B-Lynch suture, ligation of uterine arteries, and hysterectomy may be considered if medical options fail to control the bleeding.
Secondary PPH occurs between 24 hours to 6 weeks after delivery and is typically due to retained placental tissue or endometritis. It is important to understand the causes and risk factors of PPH to prevent and manage this life-threatening emergency effectively.
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This question is part of the following fields:
- Cardiovascular
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Question 9
Correct
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A 48-year-old man comes back to the clinic for a blood pressure check following an increase in his ramipril dosage. During the check, his blood pressure is recorded as 152/96 mmHg, and he reports getting similar readings on his home monitor. Which medication would be the most suitable to initiate for this patient?
Your Answer: Amlodipine
Explanation:If a patient in this age group has poorly controlled hypertension despite taking an ACE inhibitor (or angiotensin II receptor blocker), the next step is to consider adding a calcium channel blocker or a thiazide-like diuretic. In this case, adding a calcium channel blocker would be the appropriate choice. Beta blockers are not recommended in the NICE guidelines for hypertension management. While a thiazide-like diuretic could also be an option, furosemide, a loop diuretic, is not suitable. It is important to note that adding another ACE inhibitor is not recommended since the patient is already taking one.
NICE Guidelines for Managing Hypertension
Hypertension, or high blood pressure, is a common condition that can lead to serious health problems if left untreated. The National Institute for Health and Care Excellence (NICE) has published updated guidelines for the management of hypertension in 2019. Some of the key changes include lowering the threshold for treating stage 1 hypertension in patients under 80 years old, allowing the use of angiotensin receptor blockers instead of ACE inhibitors, and recommending the use of a calcium channel blocker or thiazide-like diuretic in addition to an ACE inhibitor or angiotensin receptor blocker.
The guidelines also provide a flow chart for the diagnosis and management of hypertension. Lifestyle advice, such as reducing salt intake, caffeine intake, and alcohol consumption, as well as exercising more and losing weight, should not be forgotten and is frequently tested in exams. Treatment options depend on the patient’s age, ethnicity, and other factors, and may involve a combination of drugs.
NICE recommends treating stage 1 hypertension in patients under 80 years old if they have target organ damage, established cardiovascular disease, renal disease, diabetes, or a 10-year cardiovascular risk equivalent to 10% or greater. For patients with stage 2 hypertension, drug treatment should be offered regardless of age. The guidelines also provide step-by-step treatment options, including adding a third or fourth drug if necessary.
New drugs, such as direct renin inhibitors like Aliskiren, may have a role in patients who are intolerant of more established antihypertensive drugs. However, trials have only investigated the fall in blood pressure and no mortality data is available yet. Patients who fail to respond to step 4 measures should be referred to a specialist. The guidelines also provide blood pressure targets for different age groups.
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This question is part of the following fields:
- Cardiovascular
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Question 10
Correct
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A 68-year-old man comes to the clinic complaining of central chest pain that started 8 hours ago. The pain is spreading to his left jaw. He has a medical history of hypertension and hyperlipidaemia.
Upon conducting an ECG, it shows ST elevation in leads II, III and aVF. Troponin levels are significantly elevated. The patient is given 300mg of aspirin and sublingual glyceryl trinitrate.
Unfortunately, the nearest hospital that can provide primary percutaneous coronary intervention (PCI) is 4 hours away. What is the most appropriate course of action?Your Answer: Administer fibrinolysis
Explanation:For the management of STEMI, guidelines recommend primary PCI within 120 minutes of presentation or within 12 hours of symptom onset. As this patient presented with 10 hours of pain and transfer to the nearest hospital for PCI would take 3 hours, fibrinolysis should be offered instead. Giving unfractionated heparin and a glycoprotein IIb/IIIa inhibitor is inappropriate in this case. The patient should not be immediately transferred for PCI, but if the ST elevation is not resolved on a repeat ECG taken 90 minutes after fibrinolysis, then transfer for PCI should be considered. Rechecking troponin in 120 minutes is not necessary, and repeating an ECG in 120 minutes is not the next most important step. Administering fibrinolysis and taking a repeat ECG at the 90-minute mark are the appropriate next steps.
Managing Acute Coronary Syndrome: A Summary of NICE Guidelines
Acute coronary syndrome (ACS) is a common and serious medical condition that requires prompt management. The management of ACS has evolved over the years, with the development of new drugs and procedures such as percutaneous coronary intervention (PCI). The National Institute for Health and Care Excellence (NICE) has updated its guidelines on the management of ACS in 2020.
ACS can be classified into three subtypes: ST-elevation myocardial infarction (STEMI), non ST-elevation myocardial infarction (NSTEMI), and unstable angina. The management of ACS depends on the subtype. However, there are common initial drug therapies for all patients with ACS, such as aspirin and nitrates. Oxygen should only be given if the patient has oxygen saturations below 94%, and morphine should only be given for severe pain.
For patients with STEMI, the first step is to assess eligibility for coronary reperfusion therapy, which can be either PCI or fibrinolysis. Patients with NSTEMI/unstable angina require a risk assessment using the Global Registry of Acute Coronary Events (GRACE) tool to determine whether they need coronary angiography (with follow-on PCI if necessary) or conservative management.
This summary provides an overview of the NICE guidelines for managing ACS. The guidelines are complex and depend on individual patient factors, so healthcare professionals should review the full guidelines for further details. Proper management of ACS can improve patient outcomes and reduce the risk of complications.
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This question is part of the following fields:
- Cardiovascular
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