A patient is beginning therapy with isosorbide dinitrate (Isordil). When will the nurse know that the patient has maximal tolerance?
A) When nausea develops
B) When halos are seen around lights
C) When a headache develops
D) When the heart rate increases to 100
C
Feedback:
Isosorbide dinitrate's effective dose is usually determined by increasing the dose until the patient experiences a headache, which will indicate maximum tolerable dose. The development of nausea does not indicate maximum tolerable dose. The patient should not see halos around lights with isosorbide dinitrate. The patient will not have an increase in heart rate.
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