While caring for a patient in the intensive care unit, when would the nurse plan to conduct the square wave test on the patient's arterial pressure monitoring system? Note: Credit will be given only if all correct choices and no incorrect
choices are selected. Select all that apply. 1. At the beginning of the shift
2. After drawing blood
3. When the arterial tracing is not consistent with an auscultated blood pressure
4. When the monitoring cable is disconnected from the flush system
5. Any time the patient's position is changed
1,2,3
Rationale 1: The square wave test should be performed during every shift.
Rationale 2: The square wave test should be performed after opening the system, such as when drawing blood.
Rationale 3: The square wave test should be performed when values are suspected to be inaccurate.
Rationale 4: Zeroing should be done when the monitoring cable is disconnected from the flush system.
Rationale 5: Releveling is to be done any time the patient's position is changed.
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