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Intro to Clinical Anesthesia > ECG Interpretation > Flashcards

ECG Interpretation Flashcards

1
Q

What are examples of Sodium & Potassium channel blockers?

A

Procainamide
Quinidine
Amiodarone

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2
Q

What is the mechanism of action of Sodium & Potassium channel blockers?

A

decrease Na+ & K+ to prolong QT interval

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3
Q

What are Sodium & Potassium channel blockers used to treat?

A

ventricular dysrhythmias

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4
Q

What are examples of Sodium Channel Blockers?

A

Lidocaine
Phenytoin

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5
Q

What is the mechanism of action of Sodium Channel Blockers?

A

decreased Na+ prolongs the QRS

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6
Q

What are Sodium Channel blockers used to treat?

A

atrial & ventricular arrhythmias

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7
Q

What are examples of Potassium Channel Blockers?

A

Ibutillide
Bretylium
Sotalol

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8
Q

What is the mechanism of action of Potassium Channel Blockers?

A

decreases K+ efflux during repolarization to prolong QT interval

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9
Q

What are examples of Beta Blockers?

A

Esmolol
Propranolol
Labetalol
Metoprolol

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10
Q

What is the mechanism of action of Beta Blockers?

A

decrease Ca+ influx
negative inotrope/chronotrope

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11
Q

What are examples of Calcium Channel Blockers?

A

Verapamil
Diltiazem

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12
Q

What is the mechanism of action of Calcium Channel Blockers?

A

decrease SA/AV node automaticity
decrease AV conductivity
negative inotrope

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13
Q

What is the mechanism of action of Adenosine?

A

decreases Ca+ influx
increases K+ efflux
hyperpolarization of membrane

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14
Q

What is the mechanism of action of Digoxin?

A

inhibits Na+/K+ pump
increases intracellular Ca+
increases contractility
decreases AV conduction velocity

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15
Q

What is the mechanism of action of Magnesium?

A

regulates the movement of ions within myocardium

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16
Q

Which phase does Calcium Channel Blockers work at?

A

Phase 0 at the SA and AV nodes
Phase 2 on ventricular action

17
Q

Which phase does Beta Blockers work at?

A

Phase 0 slow atrial rate

18
Q

Which phase does Sodium Channel Blockers work at?

A

Phase 0 reducing velocity of action potential

19
Q

Which phase does Potassium Channel Blockers work at?

A

Phase 3 prolong QT interval and increase effective refractory period

Intro to Clinical Anesthesia (1 decks)

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