When caring for a client with an arterial line, the nurse performs the square wave test. What is the desired response? Select all that apply.
- One to two oscillations follow the initial downstroke.
- Pressure wave drops, squares off, and is followed by one or two oscillations.
- Pressure wave rises rapidly, squares off, and is followed by one or two oscillations.
- Intervals between oscillations are less than 0.12 second (three small boxes).
- Oscillations have an initial downstroke, which extends below the baseline.
