A 69-yeаr-оld client with severe chrоnic оbstructive pulmonаry diseаse, with a forced expiratory volume in 1 second (FEV1) of 25% predicted, arrives in the emergency department with worsening dyspnea.Assessment Findings:• Respiratory rate: 32/min• Heart rate: 124/min• Blood pressure: 158/90 mm Hg• Oxygen saturation: 78% on room air• Marked accessory-muscle use• Unable to speak in complete sentences• Diffuse expiratory wheezes• Alert, anxious, and increasingly fatiguedArterial Blood Gas Results:• pH: 7.28• Partial pressure of carbon dioxide: 68 mm Hg• Bicarbonate: 31 mEq/L• Partial pressure of oxygen: 48 mm HgWhich intervention should the nurse anticipate first?