What vital sign should particularly concern the nursing supervisor in this case?

A blood pressure reading of 90/54 mmHg is a critical sign to monitor closely, as it indicates hypotension. In a skilled care unit, lowering blood pressure can affect organ perfusion, lead to inadequate blood flow to vital organs, and result in serious complications such as shock or organ failure. This particular reading suggests that the patient's blood pressure is below the normal range, which could also indicate underlying issues such as dehydration, significant blood loss, or cardiac problems.

While a heart rate of 100 bpm may indicate tachycardia and a respiration rate of 20 breaths per minute may suggest mild tachypnea, these findings alone do not necessarily indicate immediate danger. A temperature within normal limits does not pose any immediate concern in the context of vital sign assessments. Therefore, the significantly low blood pressure reading stands out as particularly concerning in this scenario, warranting further investigation and potential intervention to ensure patient safety and stability.