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A 70-year-old with severe COPD presents with worsening dyspnea and lethargy. ABG: pH 7.29, PaCO₂ 66 mmHg, PaO₂ 58 mmHg on 3 L nasal cannula. The patient is drowsy but arousable and protecting their airway. There is no facial trauma and minimal secretions.   Which intervention is most appropriate at this time?

A 70-year-old with chronic systolic heart failure presents with acute respiratory distress. Findings: RR 36/min, SpO₂ 80% on room air, BP 170/94, crackles to mid-lung fields, pink frothy sputum, S3 present. The client is anxious and speaking in single words.   What is the nurse’s priority action?

A client with septic shock develops petechiae, oozing at IV sites, and ecchymoses. Labs show platelets 45,000/mm³, prolonged PT and aPTT, low fibrinogen, and elevated D-dimer.   Which interventions should the nurse anticipate? (Select all that apply.)

What are the valence shell electron configurations of the elements in the second column of the periodic table?

A 20-year-old athlete collapses during exertion. Echocardiogram shows asymmetric septal hypertrophy with dynamic LV outflow obstruction. The patient asks about risk.   Which teaching is most appropriate?

Select the formula that corresponds with the name nitrogen dioxide. 

What is the chemical formula formed when lithium cations combine with oxygen anions?

What is the chemical formula of the compound formed when calcium cations combine with chlorine anions?

Which of the following tests would be used to differentiate the Micrococcus group from the Staphylococcus group? 

Evaluate the following expression using order of operations (BEDMAS): 2 + 3*(-4)2