Registered Practical Nurse (RPN) Practice Test

What vital signs change should a nurse assess before starting a patient on antidepressants?

1. Blood pressure

2. Heart rate

3. Both blood pressure and heart rate

4. Respiratory rate

The correct answer is: Both blood pressure and heart rate

Before starting a patient on antidepressants, it is essential for a nurse to assess both blood pressure and heart rate due to the potential effects these medications can have on the cardiovascular system. Antidepressants, particularly certain classes like tricyclics and some newer medications, can influence blood pressure by causing orthostatic hypotension (a drop in blood pressure when standing) or raise it in some cases. Monitoring the heart rate is also critical, as some antidepressants can lead to tachycardia (increased heart rate) or bradycardia (decreased heart rate). Assessing both vital signs ensures that any adverse reactions or baseline abnormalities can be identified and addressed appropriately. Understanding these changes is vital for ensuring patient safety and for making informed decisions regarding the treatment plan. In contrast, while the respiratory rate is an important vital sign, it is not primarily influenced by antidepressant medications in the same way that blood pressure and heart rate are.