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Cardiac > Cardiac Arrhythmias > Flashcards

Cardiac Arrhythmias Flashcards

Module 3

1
Q

What labs should be ordered when a cardiac arrhythmia is suspected?

A

CBC, CMP, TSH, and medication levels such as Digoxin

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2
Q

What causes systole?

A

Ventricular contraction

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3
Q

Fatigue is especially present in which arrhythmia?

A

Atrial fibrillation

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4
Q

Who is an electrophysiology referral done by?

A

Cardiology

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5
Q

What are the class I drugs for tachyarrhythmias?

A

Sodium channel blockade drugs

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6
Q

Name the 3 sodium channel blockade drugs from class Ia

A

Quinidine, Procainamide, Disopyramide

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7
Q

Name the 3 sodium channel blockade drugs from class Ib

A

Lidocaine, Mexiletine, Tocainide

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8
Q

Name the 3 sodium channel blockade drugs from class Ic

A

Flecainide, Propafenone, Moricizine

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9
Q

What are the class II drugs for tachyarrhythmias?

A

Beta-blockers

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10
Q

What are 3 selective beta-blockers?

A

Atenolol, Bisoprolol, Metoprolol

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11
Q

What are 2 non-selective beta-blockers?

A

Nadolol, Propranolol

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12
Q

What are the class III drugs for tachyarrhythmias?

A

Potassium channel blockers

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13
Q

Name 5 potassium channel blockers from class III

A

Sotalol, Dofetilide, Ibutilide, Amiodarone, Bretylium

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14
Q

What are the class IV drugs for tachyarrhythmias?

A

Calcium channel blockers

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15
Q

Name 4 dihydropyridine calcium channel blockers

A

Amlodipine, Felodipine, Nicardipine, Nifedipine

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16
Q

Name 2 non-dihydropyridine calcium channel blockers

A

Dilitazem, Verapamil

17
Q

Non-dihydropyridines affect which nodes?

A

SA and AV node

18
Q

What is the 1st intervention for a narrow-complex PSVT?

A

Carotid massage (caution with carotid plaque if present) or vagal maneuvers

19
Q

What medication is used for narrow-complex PSVT that should be used with caution in asthmatic patients?

A

Adenosine

20
Q

Which 2 drugs affect the AV node and can reduce the rate in narrow-complex PSVT?

A

Diltiazem or Verapamil

21
Q

What 3 drugs are used to slow AV conduction in narrow-complex PSVT?

A

Digoxin, CCBs, BBs

22
Q

Which class of antiarrhythmics can be used to suppress atrial automaticity?

A

Class Ia sodium channel blockers (Quinidine, Procainamide, Disopyramide), Class Ic sodium channel blockers (Flecainide, Propafenone, Moricizine), or Class III potassium channel blockers (Sotalol, Dofetilide, Ibutilide, Amiodarone, Bretylium)

23
Q

What are the 3 main components in treating atrial fibrillation or atrial flutter?

A
  1. Anticoagulation for stroke prevention
  2. Rate control
  3. Rhythm control
24
Q

Which drugs could be used for rate control?

A

BBs, Diltiazem, Verapamil, Digoxin, or combination therapy

25
Q

Stroke risk is measured using what score?

A

CHA2DS2-VASc score

26
Q

What CHA2DS2-VASc score or prior history requires anticoagulation?

A

Score of 2 or prior stroke

27
Q

What alternative medicine can affect the effectiveness of drugs used in atrial fibrillation or atrial flutter?

A

CBD oil

28
Q

Which drug can be used for a temporary increase in atrial rate but not for AV dysfunction?

A

Atropine

29
Q

Atropine should be used with caution in MI or ACS due to:

A

Risk of worsening ischemia

Cardiac (7 decks)

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