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Match the electrolyte with the effect of blocking rapid potentials Calcium    Potassium    Sodium A....

Match the electrolyte with the effect of blocking rapid potentials

Calcium
  

Potassium
  

Sodium
A.

Blocking this ion slows impulse conduction
B.

Blocking this ion delays repolarization
C.

Blocking this ion reduces myocardial contractility
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Answer #1

Electrolytes with the effect of blocking rapid potentials.

Calcium
  

Potassium
  

Sodium
C.

Blocking this ion reduces myocardial contractility

Example - Class Iv (Veramapil, Diltiazem)
B.

Blocking this ion delays repolarization

Example - Class III (Amiodarone)
A.

Blocking this slows impulse conduction

Example - Class I (Quinidine, Lidocaine)
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