Respiratory Medicine Flashcards
What is peak flow?
An easy and cheap measurement for disease progression e.g. for asthma
How are peak flow measurements interpretted?
Via table depending on pts height, age, and sex
What does spirometry measure?
Volume of air the patient is able to expel from the lungs after maximal inspiration
What is FEV1?
Forced expiratory volume - volume of the air expelled in the first second of forced expiration
What is FVC?
Forced vital capacity - total volume of air the patient can forcibly exhale in one breath
What are the RCP 3 questions used for?
Identifying patients with poor asthma control in general practice and to monitor the effect of changes of treatment
What are the 3 RCP questions for asthma?
- Have you had any difficulty sleeping because of asthma symptoms?
- Have you had your usual asthma symptoms during the day?
- Have your asthma symptoms interfered with your usual activities?
How does spirometry change for a patient with COPD compared to a patient with normal airways/lungs?
Obstructive picture gives reduced FEV1, however FVC can be normal or slightly reduced, so FEV1/FVC is reduced to below 70%
How does spirometry change for a patient with ILD compared to a patient with normal airways/lungs?
Restrictive picture gives reduced FEV1 and FVC, for FEV1/FVC is normal