Which vital sign indicates adequate perfusion during the primary assessment?

Adequate perfusion is essential in assessing a patient's physiological stability, particularly during the primary assessment in Advanced Life Support. Blood pressure is one of the key vital signs that provides valuable insight into perfusion status.

A blood pressure reading in the range of 105/70 mmHg indicates that there is sufficient pressure in the arterial system to ensure proper blood flow to vital organs, which reflects adequate perfusion. This range is generally considered normal for many patients, especially when they are alert and responsive.

The other vital signs provided do not indicate adequate perfusion. A pulse rate of 200 beats per minute often suggests tachycardia, which could indicate a variety of underlying issues, including hypovolemia or cardiac distress. A respiration rate of 30 breaths per minute is classified as tachypnea and may indicate respiratory distress or inadequate oxygenation, which also compromises perfusion. Lastly, a temperature of 100.4°F is within a slightly elevated range, which could suggest the presence of an infection or other inflammatory process, but it does not directly indicate the state of perfusion.

Thus, the blood pressure reading is the most reliable indicator of adequate perfusion within the context of the primary assessment.