Most medications used to treat dysrhythmias block ion channels. Which ion is not blocked when treating dysrhythmia?
1. Magnesium
2. Sodium
3. Calcium
4. Potassium
Correct Answer: 1
Rationale 1: Magnesium channels are not blocked by antidysrhythmic medications.
Rationale 2: Blocking potassium, sodium, or calcium ion channels is the primary pharmacologic strategy used to prevent or terminate dysrhythmias.
Rationale 3: Blocking potassium, sodium, or calcium ion channels is the primary pharmacologic strategy used to prevent or terminate dysrhythmias.
Rationale 4: Blocking potassium, sodium, or calcium ion channels is the primary pharmacologic strategy used to prevent or terminate dysrhythmias.
Global Rationale: Magnesium channels are not blocked by antidysrhythmic medications. Blocking potassium, sodium, or calcium ion channels is the primary pharmacologic strategy used to prevent or terminate dysrhythmias.
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