ECG CPO EXAM QUESTIONS AND ALL CORRECT ANSWERS
100% SOLVED AND GUARANTEED SUCCESS!
`What does the bundle of His do? - ✔✔Carries impulses
rapidly from AV junction to the right and left bundle branches
Following the AV node, the conduction pathway goes to what
part next? What does this part do? - ✔✔It does to the AV
junction. It lies between the AV node and Bundle of His. It will
carry the impulse quickly. It can also act as a backup
pacemaker if the SA node fails.
How do you decide what level to pace a patient at? - ✔✔Turn
up the mA slowly (20-80mA), until capture is obtained (spike
followed by a wide QRS). Then add 10% mA (in order to
maintain reliable pacing)
How do you define myocardial injury using an ECG? - ✔✔You
need to have ST changes in at least two leads - so you need a
12 lead ECG
How do you distinguish a junctional beat? - ✔✔The P wave
will be inverted, buried or after the QRS complex
The PR interval will be less than 0.12
,How do you distinguish a wandering pacemaker? - ✔✔There
will be a P wave before every QRS and a QRS after P, but the
PR interval will vary, and the morphology of the P waves will
vary (all look different)
How do you distinguish PVC's? - ✔✔-Wide and bizarre QRS
-T wave will have an opposite deflection of the QRS
How do you treat a 2nd degree AV block type 2? -
✔✔Atropine
Dopamine
Epi
Pacing
Monitor for deterioration into type 3
How do you treat a PVC? - ✔✔-Consider treatment if they are
increasing in frequency or severity (ie associated with MI,
couplets, bigeminy, trigeminy, multifocal, more than 6 in a
minute)
-Treat underlying cause
-Meds: Amiodarone, Mg, Lidocaine
,How do you treat a sinus arrhythmia? - ✔✔Usually no
symptoms and no treatment
How do you treat a sinus pause? - ✔✔If symptomatic treat the
cause
Give Atropine (0.5mg)
Dopamine or Epi infusion
Pacemaker
How do you treat a ventricular escape rhythm? - ✔✔-Treat
cause
-Maintain ventricular rate to produce adequate BP
-Pacing
-Atropine not given because it acts on the atria's and not
ventricles (won't work)
-DO NOT give anti-arrhythmic (you will knock out the last
working pacemaker)
How do you treat Long QT? - ✔✔In an emergency: IV Mg,
Defib, Pacing, Meds that increase HR
, Long term: monitor the interval, discontinue drugs that
increase QT interval if it increases over 0.5 sec
How do you treat MAT and PAT? - ✔✔If symptomatic:
electrical cardioversion or consider adenosine
If stable: treat cause, vagal maneuvers, adenosine, CCB/BB,
digoxin, amiodarone
How do you treat PAC's? - ✔✔Treat if frequent and
symptomatic - and treat the cause (not a lot you can do)
How do you treat PEA? - ✔✔-CAB/ABC
-CPR
-Search for cause
How do you treat pulseless v tach? - ✔✔CPR, defib,
Meds:
Epi 1mg IV/IO Q3-5min bolus
Amiodarone 300mg IV/IO, 150mg IV/IO
Lidocaine 1-1.5mg/kg IV push then 0.5-0.75mg/kg Q3-5min
100% SOLVED AND GUARANTEED SUCCESS!
`What does the bundle of His do? - ✔✔Carries impulses
rapidly from AV junction to the right and left bundle branches
Following the AV node, the conduction pathway goes to what
part next? What does this part do? - ✔✔It does to the AV
junction. It lies between the AV node and Bundle of His. It will
carry the impulse quickly. It can also act as a backup
pacemaker if the SA node fails.
How do you decide what level to pace a patient at? - ✔✔Turn
up the mA slowly (20-80mA), until capture is obtained (spike
followed by a wide QRS). Then add 10% mA (in order to
maintain reliable pacing)
How do you define myocardial injury using an ECG? - ✔✔You
need to have ST changes in at least two leads - so you need a
12 lead ECG
How do you distinguish a junctional beat? - ✔✔The P wave
will be inverted, buried or after the QRS complex
The PR interval will be less than 0.12
,How do you distinguish a wandering pacemaker? - ✔✔There
will be a P wave before every QRS and a QRS after P, but the
PR interval will vary, and the morphology of the P waves will
vary (all look different)
How do you distinguish PVC's? - ✔✔-Wide and bizarre QRS
-T wave will have an opposite deflection of the QRS
How do you treat a 2nd degree AV block type 2? -
✔✔Atropine
Dopamine
Epi
Pacing
Monitor for deterioration into type 3
How do you treat a PVC? - ✔✔-Consider treatment if they are
increasing in frequency or severity (ie associated with MI,
couplets, bigeminy, trigeminy, multifocal, more than 6 in a
minute)
-Treat underlying cause
-Meds: Amiodarone, Mg, Lidocaine
,How do you treat a sinus arrhythmia? - ✔✔Usually no
symptoms and no treatment
How do you treat a sinus pause? - ✔✔If symptomatic treat the
cause
Give Atropine (0.5mg)
Dopamine or Epi infusion
Pacemaker
How do you treat a ventricular escape rhythm? - ✔✔-Treat
cause
-Maintain ventricular rate to produce adequate BP
-Pacing
-Atropine not given because it acts on the atria's and not
ventricles (won't work)
-DO NOT give anti-arrhythmic (you will knock out the last
working pacemaker)
How do you treat Long QT? - ✔✔In an emergency: IV Mg,
Defib, Pacing, Meds that increase HR
, Long term: monitor the interval, discontinue drugs that
increase QT interval if it increases over 0.5 sec
How do you treat MAT and PAT? - ✔✔If symptomatic:
electrical cardioversion or consider adenosine
If stable: treat cause, vagal maneuvers, adenosine, CCB/BB,
digoxin, amiodarone
How do you treat PAC's? - ✔✔Treat if frequent and
symptomatic - and treat the cause (not a lot you can do)
How do you treat PEA? - ✔✔-CAB/ABC
-CPR
-Search for cause
How do you treat pulseless v tach? - ✔✔CPR, defib,
Meds:
Epi 1mg IV/IO Q3-5min bolus
Amiodarone 300mg IV/IO, 150mg IV/IO
Lidocaine 1-1.5mg/kg IV push then 0.5-0.75mg/kg Q3-5min
