When assessing a child after heart surgery to correct tetralogy of Fallot, which of the following should alert the nurse to suspect a low cardiac output? 1. Bounding pulses and mottled skin. 2....

When assessing a child after heart surgery to correct tetralogy of Fallot, which of the following should alert the nurse to suspect a low cardiac output?

1. Bounding pulses and mottled skin.

2. Altered level of consciousness and thready pulse.

3. Capillary refill of 2 seconds and blood pressure of 96/67 mm Hg.

4. Extremities warm to the touch and pale skin.