Unformatted text preview: • His symptoms are worse with exercise and worse at night. • He notes that he often goes days without symptoms. TESTS • What tests need to be ordered? • Peak flow • PFT’s • Meth choline challenge • Response to treatment PHYSCIAL EXAM • On physical exam he appears well. • His vital signs are 120/76 mm Hg, RR 14, HR 72, afebrile. • His lung exam is normal without wheezing or prolonged expiratory phase. • His peak flow is 550 L/min or 87% of predicted. AIRWAY FUNCTION • Airway function is most commonly measured with peak expiratory flow (PEF’s). • Values are generally lowest in the morning and highest in mid-day. • PEF will vary by more than 20% in asthmatic patients over the course of the day....
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- Spring '14
- Differential diagnosis, Respiratory Disorders Case, occasional wheezing, pathologically narrow airways, Diagnoses & Therapeutics