Opioid Overdose Unresponsive Post Surgical Patient

You are a nurse on a surgical floor doing routine post-op rounds. Your patient is a 54-year-old woman who had a total abdominal hysterectomy 6 hours ago. She received morphine and fentanyl in recovery, then hydromorphone IV for breakthrough pain. When you enter the room for her next vital sign check, she does not respond to your greeting. Her breathing is slow and shallow, about 4 to 5 breaths per minute, and her pupils are pinpoint.