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How many cusps does the mitral valve have? 

Sinoatrial (SA) node

A patient with a possible pulmonary embolism complains of chest pain and difficulty breathing. Assessment reveals the following:HR 152RR 38SpO₂ 87% on 4 L/min NCBP 88/67Anxious, pale, and diaphoreticWhich action should the nurse implement FIRST?

A patient admitted with a diffuse axonal injury (DAI) has a systemic blood pressure (BP) of 106/52 mm Hg (MAP 70) and an intracranial pressure (ICP) of 14 mm Hg. Which action should the nurse take first?

A patient with multiple injuries has completed the primary survey and is now hemodynamically stable.  Which nursing action is most appropriate to perform during the secondary survey?

A nurse is preparing a client for transfer to the ICU for placement of a pulmonary artery catheter. The nurse should explain to the client that this catheter is used to monitor which of the following?

A triage nurse in an emergency department is prioritizing five walk‑in patients using Emergency Severity Index (ESI) principles.ESI CategoriesESI 1 – Immediate (Emergent – highest need)ESI 2 – High Risk (Urgent, Unstable)ESI 3 – Urgent, Stable (Multiple Resources Needed)ESI 4 – Less UrgentESI 5 – NonurgentPatientsPatient A:  A 62‑year‑old with a history of coronary artery disease reports crushing chest pain that began 20 minutes ago. Skin is pale and diaphoretic. Blood pressure is 82/50 mmHg.Patient B:  A 44‑year‑old with abdominal pain for 8 hours, nausea, and vomiting. Pain is rated 8/10. Vital signs are stable, but the patient appears uncomfortable and will require lab work and imaging.Patient C: A 29‑year‑old with shortness of breath and wheezing after exposure to a cat. Oxygen saturation is 93% on room air. Able to speak full sentences but appears anxious.Patient D: A 22‑year‑old with sore throat, fever, and body aches for 3 days. Vital signs are stable. Requests testing for strep throat.Patient E: A 36‑year‑old requesting evaluation for removal of sutures placed 10 days ago on a forearm laceration. No pain, redness, or drainage.Question Prompt:Match each patient to the appropriate Emergency Severity Index (ESI) category. Each ESI category will be used once.

Which assessment is NOT part of initial mass‑casualty triage?

A nurse is providing discharge teaching to a client who was hospitalized with a pelvic fracture and liver laceration following a motor vehicle collision. Which statements by the client indicate understanding of strategies to reduce the risk of future motor vehicle accidents or injury? Select all that apply.

A client who sustained a C4 spinal cord injury one week ago demonstrates ineffective coughing and crackles on lung auscultation. To promote airway clearance, the nurse should [BLANK-1].