Ep2

Question 0

Procan

Answer 0

Blocks Ikr

Lupus like syndrome

Question 1

Quinidine

Answer 1

Slow na channels

It also slows Ito potassium current inhibits Ito receptor which reduces VF risk in brugada

Question 2

Ibutalide

Answer 2

Potassium Ikr current converts afib and flutter to sinus 1 mg followed by 1 mg
Torsades women, CHF non Caucasians

Question 3

Digoxin

Answer 3

IncreAse vagal tone
Inhibits sympathetic out flow
DecreSe AV nodal conduction and increase refractory ness
Blocks sodium potassium ATPase pump and increSes intra cellular calcium

Question 4

Adenosine

Answer 4

Decrease cAMP decreases AV node conduction decrease ca and na in to the cells.
Reduced automaticity by hyper polarization by increasing the K inflow

Question 5

AF anticoag chad score

Answer 5

0 Asa
1 Asa 81-325 or Coumadin INR 2-3
2 or more 2-3
Asa or no therapy acceptable in <60 yrs with no heart disease

Question 6

Has-bled

Answer 6

HTN 
Abnormal renal    Hasbled
Stroke
Bleeding
Liable INR          More than 3 high risk
Elderly
Drug or alcohol

Question 7

Maze

Answer 7

75-99% success

Question 8

Transplant

Answer 8

Can have high degree AV block

Question 9

AV dissociation

Answer 9

Seen 25-50% vt
Atrial rate slower than vent rate vt
Monophasic beat R wave in V1 vt road slurred qrs vt
r/s 100 in one leAd it VT
Triphasic R v1 svt

Question 10

aVR

Answer 10

R warv In AVR
r or a > 40 msec
Notch on the descending limb
ALL VT

Question 11

Sinus node dysfunction

Pacing indication

Answer 11

Class1 symptomatic bradycardia
Chronotropic incompetence
Bradycardia due to required drugs
Class2 asymptomatic or minimally symptomatic hr in 40s while awake or> 3 sec pause
Class 3 asymptomatic sinus node

Question 12

Icd

Answer 12

Vt VF
Cardiac arrest
Syncope with EP shoeing vt
Lvef 40 days EF <30%

Question 13

Sudden death WPW

Answer 13

0.15-0.25% over 10 years