A child diagnosed with tetralogy of Fallot becomes upset, crying and thrashing around when a blood specimen is obtained. The child's color becomes blue and the respiratory rate increases to 44...

A child diagnosed with tetralogy of Fallot becomes upset, crying and thrashing around when a blood specimen is obtained. The child's color becomes blue and the respiratory rate increases to 44 breaths/min. Which of the following actions should the nurse do first?

1. Obtain a prescription for sedation for the child.

2. Assess for an irregular heart rate and rhythm.

3. Explain to the child that it will only hurt for a short time.

4. Place the child in a knee-to-chest position.