01
Front
What is a dysrhythmia?
Back
A dysrhythmia is a change in the heart’s rate, rhythm, or electrical conduction.
Free Online Flashcard Deck
6 Dysrhythmias Free Online FlashCards
Study 6 Dysrhythmias with 12 free online flashcards. Review key terms, definitions, and concepts with this interactive flashcard deck.
12 cards
02
Front
How do you estimate an irregular ventricular rate?
Back
Count the QRS complexes in 6 seconds and multiply by 10 to estimate beats per minute.
03
Front
What is the normal PR interval?
Back
The normal PR interval is approximately 0.12–0.20 seconds.
04
Front
When does sinus bradycardia require treatment?
Back
Treat sinus bradycardia when symptoms or poor perfusion are present; a slow rate alone does not necessarily require treatment.
05
Front
What ECG pattern is typical of atrial fibrillation?
Back
Atrial fibrillation typically has irregularly irregular R–R intervals and no distinct, consistent P waves. It increases stroke risk, so anticoagulation is assessed individually.
06
Front
What ECG clue is characteristic of atrial flutter?
Back
Atrial flutter has repeating sawtooth flutter waves; the ventricular rhythm may be regular or variable.
07
Front
What initial approaches may be used for stable, regular SVT?
Back
For stable, regular SVT, vagal maneuvers may be used; adenosine may also be used when indicated under protocol or prescription.
08
Front
What ECG pattern identifies a premature ventricular complex?
Back
PVCs are early, wide QRS complexes without a preceding normal P wave, often followed by a pause. Assess symptoms and consider triggers such as ischemia, hypoxia, or electrolyte abnormalities.
09
Front
What pattern identifies Mobitz I AV block?
Back
Mobitz I shows progressive PR interval lengthening followed by a dropped QRS complex.
10
Front
What is the priority for tachycardia with a pulse and cardiopulmonary compromise?
Back
Activate emergency assistance and prepare for urgent synchronized cardioversion by trained clinicians. Hypotension, altered mental status, shock, ischemic chest discomfort, or acute heart failure indicate compromise.
11
Front
What is the initial response to pulseless VT or VF?
Back
Activate the code response, begin high-quality CPR, and defibrillate as soon as available; resume CPR immediately after a shock.
12
Front
When is a QRS complex considered wide?
Back
A QRS duration of 0.12 seconds or more is considered wide.
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