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Exam (elaborations)

Tachycardia

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Exam of 2 pages for the course MFRI VME: Principles of Vehicle Extrication Chapte at MFRI VME: Principles of Vehicle Extrication Chapte (Tachycardia)

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Tachycardia
Can AVRT & AVNRT can be see in both healthy & sick hearts? - ANS-Yes

Definition of Non-sustained Ventricular Tachycardia - ANS-3+ consecutive ventricular
beats (if only 1-2 it just PVCs); rate >120 bpm, duration <30 seconds

Diseases associated w/ NSVT - ANS-Hypertrophic CMP (HOCM), idiopathic DCM,
Valvular heart disease, chronic CHD, LV dysfunction

First Line Treatment of Torsades in Stable Pts - ANS-IV Mg

How to distinguish SVT from Sinus Tachycardia - ANS-SVT has more sudden onset &
abrupt cessation

Management of NSVT - ANS-optimize electrolytes (esp K & Mg), BB, Amiodarone,
catheter ablation (if aberrant pathway is found)

Multifocal Atrial Tachycardia - ANS-> or = 3 P wave morphologies

Narrow Complex Tachycardia - ANS-Sinus tachy, AVNRT, orthodromic AVRT, multifocal
atrial tachycardia, afib, aflutter

Rate need to be considered Sinus Tachycardia - ANS->100 bpm

Standard of care for WPW - ANS-Catheter ablation of accessory pathway (always
ablate even if it asymptomatic d/t risk of sudden death from a fib)

SVT Mgmt in Stable Patients - ANS-Vagal maneuvers, carotid massage, adenosine,
CCB or BB, consult EP for frequent attacks

SVT Mgmt in Unstable Patients - ANS-Try vagal maneuvers & carotid massage, if
unsuccessful then DC cardioversion

This is a potentially serious arrhythmia present in 1/3rd of WPW pts - ANS-Afib (may
result in RVR-> degeneration to Vfib -> sudden death)

Torsades de Pointes Triggers - ANS-Hypokalemia, Hypomegnesium, Drugs that prolong
QTc

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