Pulmonary Function Studies
is a topic covered in the Davis's Lab & Diagnostic Tests
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Pulmonary function tests (PFTs).
To assess respiratory function to assist in evaluating obstructive versus restrictive lung disease and to monitor and assess the effectiveness of therapeutic interventions.
There are no fluid restrictions unless by medical direction. Instruct the patient to refrain from smoking tobacco or eating a heavy meal for 4 to 6 hr prior to the study. Protocols may vary among facilities. Instruct the patient to avoid bronchodilators (oral or inhalant) for at least 4 hr before the study, as directed by the health-care provider (HCP).
- Normal respiratory volume and capacities, gas diffusion, and distribution
- No evidence of chronic obstructive pulmonary disease (COPD) or restrictive pulmonary disease
Critical Findings and Potential Interventions
- Hypoxia occurs at oxygen saturation levels less than 90%. Significant hypoxia, levels less than 85%, require immediate evaluation and treatment.
Timely notification to the requesting HCP of any critical findings and related symptoms is a role expectation of the professional nurse. A listing of these findings varies among facilities.
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Bladh, Mickey Lynn., and Anne M. Van Leeuwen. "Pulmonary Function Studies." Davis's Lab & Diagnostic Tests, 7th ed., F.A. Davis Company, 2017. Nursing Central, nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425095/5.1/Pulmonary_Function_Studies.
Bladh ML, Van Leeuwen AM. Pulmonary Function Studies. Davis's Lab & Diagnostic Tests. 7th ed. F.A. Davis Company; 2017. https://nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425095/5.1/Pulmonary_Function_Studies. Accessed August 26, 2019.
Bladh, M. L., & Van Leeuwen, A. M. (2017). Pulmonary Function Studies. In Davis's Lab & Diagnostic Tests. Available from https://nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425095/5.1/Pulmonary_Function_Studies
Bladh ML, Van Leeuwen AM. Pulmonary Function Studies [Internet]. In: Davis's Lab & Diagnostic Tests. F.A. Davis Company; 2017. [cited 2019 August 26]. Available from: https://nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425095/5.1/Pulmonary_Function_Studies.
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