An occupational health nurse at a group of health care clinics is planning activities to prevent and control the spread of communicable disease. The nurse should identify that which of the following activities is a secondary level of prevention?

A. A blood pressure of 94/68 mm Hg is within the normal range for a 7-year-old child and may indicate compensated dehydration rather than severe dehydration.

B. A urinary output of 30 mL/hr is insufficient and may indicate dehydration, but it does not specifically indicate severe dehydration.

C. A respiratory rate of 24/min is within the normal range for a 7-year-old child and is not specifically indicative of severe dehydration.

D. Tachycardia (heart rate >100 beats per minute) is a common finding in severe dehydration as the body attempts to compensate for decreased blood volume by increasing heart rate.

A. An air leak noted at the insertion site would result in continuous bubbling in the water seal chamber, not the absence of tidaling.

B. If the tubing is kinked or obstructed, it can prevent the movement of air in and out of the water seal chamber, leading to the absence of tidaling.

C. If water needs to be added to the suction-control chamber, this would affect the level of suction, not the tidaling in the water seal chamber.

D. If the suction is set too low, it would not necessarily affect the tidaling in the water seal chamber; instead, it would result in inadequate drainage or lack of suction.