Cardiac Arrhythmias Lecture 2: Supraventricular Arrhythmias

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Questions and Answers

Which arrhythmia is usually asymptomatic but may give the sensation of a missed beat or an abnormally strong beat?

  • Atrial fibrillation
  • Atrial flutter
  • Atrial tachycardia
  • Atrial ectopic beats (correct)

Which type of arrhythmia is characterized by a large re-entry circuit?

  • Atrial tachycardia
  • Atrial fibrillation
  • Atrial ectopic beats
  • Atrial flutter (correct)

What is the treatment for atrial tachycardia?

  • Calcium channel blockers
  • ACE inhibitors
  • Î’-blockers (correct)
  • Anticoagulants

What can frequent atrial ectopic beats potentially herald the onset of?

<p>Atrial fibrillation (D)</p> Signup and view all the answers

What does the ECG for atrial flutter show?

<p>Saw tooth flutter waves (A)</p> Signup and view all the answers

What is the most common sustained cardiac arrhythmia?

<p>Atrial fibrillation (A)</p> Signup and view all the answers

Which method is used to establish the diagnosis of atrial flutter?

<p>Carotid sinus pressure (D)</p> Signup and view all the answers

What is the preferred method for achieving rhythm control in atrial flutter?

<p>Direct current (DC) cardioversion (C)</p> Signup and view all the answers

What is the characteristic pulse produced during episodes of atrial fibrillation?

<p>Irregularly irregular pulse (A)</p> Signup and view all the answers

What type of AF involves intermittent self-terminating episodes within 7 days?

<p>Paroxysmal AF (A)</p> Signup and view all the answers

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Study Notes

Arrhythmias

  • Premature atrial complexes (PACs) are usually asymptomatic but may give the sensation of a missed beat or an abnormally strong beat.

Atrial Tachycardia

  • Macro-reentrant atrial tachycardia is characterized by a large re-entry circuit.
  • The treatment for atrial tachycardia involves identifying and addressing the underlying cause.

Atrial Ectopic Beats

  • Frequent atrial ectopic beats potentially herald the onset of atrial fibrillation (AF).

Atrial Flutter

  • The ECG for atrial flutter shows a "sawtooth" pattern of flutter waves.
  • Atrial flutter is the most common sustained cardiac arrhythmia.
  • The diagnosis of atrial flutter is established through a 12-lead electrocardiogram (ECG).
  • Cardioversion is the preferred method for achieving rhythm control in atrial flutter.

Atrial Fibrillation

  • The characteristic pulse produced during episodes of atrial fibrillation is irregularly irregular.
  • Paroxysmal atrial fibrillation involves intermittent self-terminating episodes within 7 days.

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