ecg rhythms

Question 1

Left bundle branch block

Answer 1

caused by htn, hyperkalemia, dig toxicity, aortic stenosis, extensive MI

Question 2

Right BBB

Answer 2

caused by CAD*, PE, myocarditis, cardiomyopathy, right ventricular hypertrophy

Question 3

3rd degree heart block

Answer 3

cause: MI, dig toxicity
treatment: check pt, check electrolytes, meds, TCP, TIP, dopamine & epi gtt, PPM if needed

Question 4

Mobitz II

Answer 4

Cause: anteroseptal MI
Treat: watch for advancing black, TCP, TIP, PPM

Question 5

Mobitz I/Wenkebach

Answer 5

cause: ischemia at AV node, meds, dig toxicity, post-cardiac cath if through femoral
Treat: meds, watch for advancing block, check electrolytes

Question 6

First degree av block

Answer 6

cause: congenital, meds, MI, beta blockers post MI
treat: check meds, electrolytes, no trestment unless symptomatic

Question 7

Torsades de pointes

Answer 7

Cause: R on T, pronged QT, electrolyte imbalances, hypothermia, non sedating antihistamines, severe brady
Treat: code blue, cpr, Magsulf, defib

Question 8

Vfib

Answer 8

Cause: MI, R on T
Treatment: epi, CPR, defib

Question 9

Vtach

Answer 9

Treatment: stable: notify md, watch for hemodynamic compromise, amiodarone
Unstable: cardiovert (if pulse), defib if no pulse

Question 10

Accelerated idioventricular

Answer 10

60-100 bpm

Treat: atropine if symptomatic

Question 11

Idioventricular rhythm

Answer 11

40bpm or less

Prepare for tcp/tip, dopamine gtt, epi gtt

Question 12

PVC

Answer 12

observe frequency (3 or more-problem), check meds, check electrolytes