The nurse administers a medication that binds to a beta receptor on the cardiac muscle, resulting in stimulation of the receptor. Which effect does the nurse anticipate when assessing the client?
1. A decrease in chest pain
2. An increase in heart rate
3. An increase in blood pressure
4. A decrease in electrical conduction
Correct Answer: 2
Rationale 1: Since stimulation of the beta receptors increases heart rate and workload, an increase in chest pain could occur.
Rationale 2: Stimulation of the beta receptors will cause an increase of sympathetic nervous system activity, resulting in an increased heart rate.
Rationale 3: Stimulation of the beta receptors is more likely to cause a decrease in blood pressure.
Rationale 4: Electrical conduction will be increased by beta stimulation.
Global Rationale: Stimulation of the beta receptors will cause an increase of sympathetic nervous system activity, resulting in an increased heart rate. Since stimulation of the beta receptors increases heart rate and workload, an increase in chest pain could occur. Stimulation of the beta receptors is more likely to cause a decrease in blood pressure. Electrical conduction will be increased by beta stimulation.
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