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→Arrhythmias
=Arrhythmias=
=Arrhythmias=
SA node -> AV node -> bundle of His -> left/right bundles -> Purkinje fibers
SA node -> AV node -> bundle of His -> left/right bundles -> Purkinje fibers
* Bradyarrhythmias and Conduction Abnormalities
* [[Bradyarrhythmias]] and Conduction Abnormalities
**H&P: syncope, nausea, vomiting, blurred vision, dizziness
**H&P: syncope, nausea, vomiting, blurred vision, dizziness
**DDx: sinus brady, SSS, 1st degree AV block, 2nd degree AV block (Mobitz 1), 2nd degree AV block (Mobitz 2), 3rd degree AV block
**DDx: sinus brady, SSS, 1st degree AV block, 2nd degree AV block (Mobitz 1), 2nd degree AV block (Mobitz 2), 3rd degree AV block
**Tx: correct electrolytes/hypothermia, atropine/dopamine, transcutaneous pacing, transvenous pacing, leadless pacing, permanent pacemaker
**Tx: correct electrolytes/hypothermia, atropine/dopamine, transcutaneous pacing, transvenous pacing, leadless pacing, permanent pacemaker
* Tachyarrhythmias
* [[Tachyarrhythmias]]
**H&P: palpitations, syncope
**H&P: palpitations, syncope
**DDx: Sinus tach, Afib, Aflutter, Vtach, Vfib, Vflutter, AVNRT, AVRT, WPW
**DDx: Sinus tach, Afib, Aflutter, Vtach, Vfib, Vflutter, AVNRT, AVRT, WPW