A nurse is monitoring a patient post-surgery. Which of the following findings would indicate a potential complication?

Choice A reason: Pain is expected post-surgery due to tissue trauma and inflammation, activating nociceptors. While it requires management, it is not necessarily a complication unless severe or persistent, as it does not directly indicate infection or other acute issues compared to fever, which signals systemic involvement. Choice B reason: Bradycardia (low heart rate) may occur post-surgery due to anesthesia or vagal stimulation but is not a primary complication unless symptomatic (e.g., causing hypotension). It is less specific to acute postoperative issues like infection compared to high fever, which requires immediate investigation. Choice C reason: High fever post-surgery suggests a complication like infection (e.g., wound infection or pneumonia). Elevated body temperature reflects immune activation and cytokine release in response to pathogens, requiring urgent evaluation to identify and treat the source, preventing sepsis or other systemic complications. Choice D reason: Constipation is common post-surgery due to anesthesia, opioids, or immobility slowing gastrointestinal motility. While uncomfortable, it is not an immediate complication like infection. It requires management with laxatives or mobilization but is less urgent than fever, which indicates a potentially life-threatening issue.