You are treating a patient who has a history of cardiac disease. Before the treatment, you take the patient's vital signs and find the following:
-Heart rate: 60 bpm and steady
-Respiratory rate: 10 breaths per minute
- Blood pressure: 120/75 mmHg
- Oral temperature: 96.8°F
Which vital sign presents the most concern?
1. Respiratory rate
2. Heart rate
3. Blood pressure
4. Temperature
The solution will be posted in a few days.