After administering an IV dose of morphine, a patient has decreased respirations. What should the nurse do first?

The first action a nurse should take in response to decreased respirations after administering an IV dose of morphine is to administer naloxone. Morphine is an opioid analgesic that can depress the respiratory center in the brain, leading to respiratory depression, which is a potentially life-threatening condition.

Naloxone is an opioid antagonist that works quickly to reverse the effects of opioids, including respiratory depression. By administering naloxone, the nurse can rapidly restore the patient's respiratory function and prevent serious complications that may arise from inadequate breathing.

In this scenario, preparing for intubation may not be immediately necessary unless the patient's respiratory status deteriorates further or they are unable to regain adequate respiratory function after naloxone is given. Administering dopamine infusion is not appropriate in this situation, as it does not address the underlying cause of respiratory depression from opioid use. Starting an IV infusion of normal saline does not directly counteract the respiratory depression caused by morphine, making it a less urgent action. Therefore, administering naloxone is the most appropriate and immediate response to ensure the patient's safety.