The client is receiving digoxin (Lanoxin) for a dysrhythmia. Why does the nurse expect medication levels in the blood to be monitored closely?
1. Digoxin causes ventricular dysrhythmias.
2. Excessive levels can produce serious dysrhythmias.
3. Subtherapeutic levels are fatal.
4. Interactions with other medications are common.
2
Rationale 1: Digoxin (Lanoxin) is used for atrial dysrhythmias.
Rationale 2: Excessive levels can produce serious dysrhythmias, since the action of the drug is to decrease the automaticity of the SA node and slow the conduction through the AV node.
Rationale 3: Subtherapeutic levels can cause the atrial dysrhythmia to continue, which can produce symptoms, but might not be lifethreatening or fatal.
Rationale 4: Interactions with other medications are common, but not monitored by drug levels.
Global Rationale: Excessive levels can produce serious dysrhythmias, since the action of the drug is to decrease the automaticity of the SA node and slow the conduction through the AV node. Digoxin (Lanoxin) is used for atrial dysrhythmias. Subtherapeutic levels can cause the atrial dysrhythmia to continue, which can produce symptoms, but might not be lifethreatening or fatal. Interactions with other medications are common, but not monitored by drug levels.
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