What is repeatability criteria for spirometry?

Repeatability alone criteria was defined as: Whether or not acceptability criteria were met, the highest and second highest FVC values, and the highest and second highest FEV1 values from all efforts were within 200 mL of each other (for years 2004 and 2005) or 150 mL of each other (for years 2006 to 2008).

What is the American Thoracic Society standard for accuracy when measuring flows during pulmonary function testing?

The volume at each flow should meet the accuracy requirement of ¡3.5%.

When is spirometry contraindicated?

Conditions that may be negatively impacted by the increases in myocardial demand or changes in blood pressure associated with spirometry: These include recent (< 1 week) myocardial infarction, systemic hypotension or severe hypertension, significant atrial/ventricular arrhythmia, noncompensated heart failure.

What patient preparation is required for spirometry?

Spirometry Test Preparation Patients are advised to not smoke at least an hour prior to the test. Patients reporting for the test should ensure that they do not eat a large meal at least 2 hours prior to the test. Patients should not consume alcohol at least 4 hours before reporting for the test. Patients should avoid vigorous exercises at least an hour before the test.

Is there a role for screening spirometry?

Another role for screening spirometry in patients with respiratory symptoms is to rule out airway obstruction as a cause of the symptoms. For example, dyspnea from a restrictive lung disease would present with a low VC and FEV

How is spirometry used to diagnose asthma?

These lung function tests are commonly used to diagnose and monitor asthma: Spirometry is the most common of the lung function tests used for asthma. It’s a simple, quick, and painless way to check your lungs and airways . You just take a deep breath and exhale into a hose attached to a device called a spirometer.

How useful is spirometry?

Spirometry is a useful measure for detecting early change in disease and provides physiological confirmation for diagnoses. When performed correctly, it can be used to assess disease progression and response to therapy. With the introduction of portable meters, it can be performed anywhere and by anyone with good training.