A nurse is caring for a client on the medical stepdown unit….

A nurse is caring for a client on the medical stepdown unit. The following data are related to this client:Subjective InformationLaboratory AnalysisPhysical AssessmentShortness of breath for 20 minutesReports feeling frightened“Can’t catch my breath”pH: 7.32PaCO2: 28 mm HgPaO2: 78 mm HgSaO2: 88%Pulse: 120 beats/minRespiratory rate: 34 breaths/minBlood pressure 158/92 mm HgLungs have cracklesWhat action by the nurse is most appropriate?