medium · NCLEX-RN Reduction of Risk Potential
The nurse is assessing the pulmonary artery (PA) pressure waveform. If the balloon is deflated, the nurse expects to see a waveform with a dicrotic notch.
What does the dicrotic notch represent in the PA waveform?
- Closure of the tricuspid valve.
- The start of atrial depolarization.
- Closure of the pulmonary valve.
- Opening of the mitral valve.
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