The nurse is caring for a client on the medical step-down unit. Which of the following assessment data requires immediate nursing action? (Select all that apply.)

New onset of respiratory stridor

Shortness of breath for 20 minutes

Blood pressure of 150/84

Nervousness associated with anxiety

ABG results pH: 7.12, PaCO2: 28 mmHg, PaO2: 55 mmHg