What vital sign is typically assessed first during a physical examination?

During a physical examination, the respiratory rate is typically assessed first because it provides immediate insight into the patient's respiratory function and overall stability. Observing the respiratory rate can often reveal critical information about a patient's condition, including the presence of respiratory distress or compromised oxygenation.

Assessing the respiratory rate first allows the clinician to ensure that the patient is breathing adequately, which is essential for all other aspects of assessment. If a patient is in respiratory distress, other vital signs and aspects of the examination might be less relevant until the airway and breathing are stabilized. Therefore, starting with the respiratory rate helps prioritize patient safety and addresses any urgent needs promptly.

While heart rate, blood pressure, and temperature are also important vital signs, they may be assessed in conjunction with respiratory observations or immediately afterward, depending on the situation and protocols in place.