Arrhythmias – Bradycardia Test Questions & Answers

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Arrhythmias – Bradycardia Test Questions & Answers Conduction block of bradyarrythmias? - ✔✔Tissue that is electrically unexcitable- can be transient or permanent, bidirectional or unidirecti... onal Usually results in an escape beat/rhythm What things can cause a conduction block? - ✔✔Ischemia, fibrosis, inflammation, drugs Resting rate of SA node? - ✔✔60-100 Resting rate of AV node? - ✔✔50-60 bpm resting rate of bundle of his? - ✔✔40-60 bpm Purkinje system rate? - ✔✔30-40 Which pacemaker provides the "escape rhythm"? - ✔✔Purkinje network (bundle branches and purkinje fibers) Sinus arrest? - ✔✔failure of sinus node discharge absence of atrial depolarization "exit block" Periods of asystole Sinus bradycardia - ✔✔slow heart beat Brady/Tachy syndrome - ✔✔Sudden changes, these pts are more symptomatic Exit block? - ✔✔transient block of impulses from SA node P-P interval relationship Delayed conuction through AV node and PR interval > 200 ms? - ✔✔1st degree AV block Progressive prolongation of PR interval until beat is dropped, SKRILLEX - ✔✔2nd degree AV block, mobitz 1 Regularly droppe ventricular beats? - ✔✔Higher mobitz 2, still second degree AV block No impulse conduction from atria to ventricles, ventricular rate like 37 bpm, atrial rate like 130 bpm, PR is very variable - ✔✔Third degree AV block What are the bradyarrythmia impulse formation disorders? - ✔✔Sinus arrest Sinuse bradycardia Brady/Tachy syndrome What are the bradyarrythmia impulse CONDUCTION disorders? - ✔✔Exit block, 1st,2nd (I and II), 3rd degree heart block Bi/trifascicular block FIfascicular block - ✔✔high risk of cardiac mortality and sudden cardiac death [Show More]

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