Cardiology Quiz on Arrhythmias and Heart Function
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Questions and Answers

What is the heart rate classification for tachycardia?

  • Between 60 and 100 beats per minute
  • More than 100 beats per minute (correct)
  • Less than 60 beats per minute
  • More than 120 beats per minute
  • Which of the following symptoms can be caused by bradycardia?

  • Excessive sweating
  • Fainting spells (correct)
  • Fast heartbeat
  • Chest pain
  • What type of tachycardia involves only the ventricles?

  • Supraventricular tachycardia
  • Sinus tachycardia
  • Atrial fibrillation
  • Ventricular tachycardia (correct)
  • Which factor can contribute to the development of arrhythmias?

    <p>Blood chemical imbalances</p> Signup and view all the answers

    What is a serious consequence of ventricular fibrillation?

    <p>The heart quivering and unable to pump blood</p> Signup and view all the answers

    What can help correct the symptoms of bradycardia?

    <p>Implanting an electronic pacemaker</p> Signup and view all the answers

    Which symptom is NOT associated with arrhythmias?

    <p>Excessive thirst</p> Signup and view all the answers

    What do P waves indicate in relation to the heart's electrical activity?

    <p>The top of the heart received electrical activity</p> Signup and view all the answers

    What is the role of QRS waves in heart function?

    <p>They reflect the electrical activity causing the heart to contract</p> Signup and view all the answers

    Which effect is commonly associated with antiarrhythmic drugs?

    <p>Negative inotropic effects</p> Signup and view all the answers

    What does angina pectoris primarily signify?

    <p>Chest pain due to myocardial ischaemia</p> Signup and view all the answers

    Which of the following drug classifications is associated with prolonged repolarization?

    <p>Potassium Channel Blockade</p> Signup and view all the answers

    Which of the following is a symptom of arrhythmias?

    <p>Dizziness or lightheadedness</p> Signup and view all the answers

    What type of heart condition does bradycardia refer to?

    <p>Slow heart rate</p> Signup and view all the answers

    How are antiarrhythmic drugs classified?

    <p>According to their mechanism of action</p> Signup and view all the answers

    What is the primary characteristic of congestive heart failure?

    <p>Impaired ventricular performance</p> Signup and view all the answers

    Which side of the heart failure is likely to cause blood backup in the lungs?

    <p>Left-sided heart failure</p> Signup and view all the answers

    Which of the following conditions is a common cause of heart failure?

    <p>Coronary artery disease</p> Signup and view all the answers

    What type of dysfunction in heart failure is characterized by thickened ventricular walls?

    <p>Diastolic dysfunction</p> Signup and view all the answers

    Which of the following best describes systolic dysfunction?

    <p>Inadequate wall tension to pump blood effectively</p> Signup and view all the answers

    What physical habit may increase the occurrence of heart failure?

    <p>Advancing age</p> Signup and view all the answers

    What effect does heart failure have on other organs in the body?

    <p>Oxygen and nutrient deficiency</p> Signup and view all the answers

    Which of the following is a type of heart failure that affects the ability to fill the ventricles?

    <p>Diastolic dysfunction</p> Signup and view all the answers

    What is the primary function of HDL cholesterol?

    <p>To transport cholesterol from tissues to the liver</p> Signup and view all the answers

    What condition is characterized by excess LDL cholesterol in the blood?

    <p>Hyperlipidemia</p> Signup and view all the answers

    What is the potential consequence of a clot forming in a narrowed artery due to atherosclerosis?

    <p>Heart attack or stroke</p> Signup and view all the answers

    Which class of drugs works primarily by inhibiting the HMG-CoA reductase enzyme?

    <p>Statins</p> Signup and view all the answers

    How do bile acid-binding resins lower cholesterol levels?

    <p>By preventing the enterohepatic cycling of bile acids</p> Signup and view all the answers

    What is the unique action of the drug Ezetimibe?

    <p>It blocks the absorption of dietary cholesterol</p> Signup and view all the answers

    Niacin primarily affects lipid levels by:

    <p>Inhibiting lipolysis in adipose tissue</p> Signup and view all the answers

    What is a characteristic feature of statins?

    <p>They are used to decrease LDL cholesterol levels</p> Signup and view all the answers

    What is the primary goal of drug therapy for essential hypertension?

    <p>To lower blood pressure to prevent serious consequences</p> Signup and view all the answers

    What is the most common adverse effect of drugs that increase the excretion of sodium and water?

    <p>Excessive loss of water</p> Signup and view all the answers

    What do beta-blockers primarily block in the heart to lower blood pressure?

    <p>Beta-1 receptors</p> Signup and view all the answers

    Which mechanism do alpha-blockers primarily inhibit to produce their antihypertensive effects?

    <p>Alpha-1 adrenergic receptors</p> Signup and view all the answers

    What do calcium channel blockers interfere with to achieve vasodilation?

    <p>Calcium influx in smooth muscle</p> Signup and view all the answers

    What is the function of angiotensin converting enzyme (ACE) inhibitors?

    <p>Inhibit conversion of angiotensin I to angiotensin II</p> Signup and view all the answers

    Which type of drug decreases sympathetic activity and blood pressure from the central nervous system?

    <p>Centrally acting sympatholytics</p> Signup and view all the answers

    What is the primary action of vasodilators?

    <p>Cause relaxation of vascular smooth muscle</p> Signup and view all the answers

    Which type of hypertension is caused by an underlying condition?

    <p>Secondary hypertension</p> Signup and view all the answers

    What type of receptors are responsive to the stretching of vessel walls?

    <p>Baroreceptors</p> Signup and view all the answers

    Phase 3 of the cardiac action potential is characterized by what process?

    <p>K+ efflux</p> Signup and view all the answers

    Calcium channel blockers primarily reduce which aspect of heart function?

    <p>Cardiac contractility</p> Signup and view all the answers

    What condition is characterized by quivering ventricles that prevents proper blood pumping?

    <p>Ventricular fibrillation</p> Signup and view all the answers

    Which of the following is NOT considered an anti-arrhythmic drug?

    <p>Nitrates</p> Signup and view all the answers

    Which of the following statements about heart rate is INCORRECT?

    <p>Tachycardia refers to a heart rate of less than 60 beats per minute.</p> Signup and view all the answers

    What type of angina occurs unpredictably at rest or during sleep due to coronary vasospasm?

    <p>Prinzmetal’s angina</p> Signup and view all the answers

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    Test your knowledge on cardiac conditions like tachycardia and bradycardia in this comprehensive quiz. Explore symptoms, drug classifications, and essential heart functions related to arrhythmias. Perfect for students and professionals in the field of cardiovascular health.

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