Peak Expiratory Flow Variability in Asthma



PEF Variabilty

0-14 Variability: Uncharacteristic of Asthma
15-19 Variability: Supports dx of asthma
20-30 Variability: Mild Persistant Asthma
31-100 Variability: Moderate to severe persistant

Formula

AvgDailyVariability = 100 * (HighestPEF – LowestPEF) / HighestPEF

References:

1. Buzoianu E, Moiceanu M, Plesca DA. Asthma Control Assessment in Children: Correlation between Asthma Control Test and Peak Expiratory Flow. Maedica (Buchar) 2014; 9:338.

2. National Asthma Education and Prevention Program: Expert Panel Report III: Guidelines for the diagnosis and management of asthma. Bethesda, MD. National Heart, Lung, and Blood Institute, 2007. (NIH publication no. 08-4051)

ThePhysician.org includes risk tools and content intended for use by healthcare professionals. These tools do not give professional advice; physicians and other healthcare professionals who use these tools or databases should exercise their own clinical judgment as to the information they provide.
Please read Disclaimer for additional information.

PEF Variabilty

0-14 Variability: Uncharacteristic of Asthma
15-19 Variability: Supports dx of asthma
20-30 Variability: Mild Persistant Asthma
31-100 Variability: Moderate to severe persistant

Formula

AvgDailyVariability = 100 * (HighestPEF – LowestPEF) / HighestPEF

References:

1. Buzoianu E, Moiceanu M, Plesca DA. Asthma Control Assessment in Children: Correlation between Asthma Control Test and Peak Expiratory Flow. Maedica (Buchar) 2014; 9:338.

2. National Asthma Education and Prevention Program: Expert Panel Report III: Guidelines for the diagnosis and management of asthma. Bethesda, MD. National Heart, Lung, and Blood Institute, 2007. (NIH publication no. 08-4051)

ThePhysician.org includes risk tools and content intended for use by healthcare professionals. These tools do not give professional advice; physicians and other healthcare professionals who use these tools or databases should exercise their own clinical judgment as to the information they provide.
Please read Disclaimer for additional information.

PEF Variabilty

0-14 Variability: Uncharacteristic of Asthma
15-19 Variability: Supports dx of asthma
20-30 Variability: Mild Persistant Asthma
31-100 Variability: Moderate to severe persistant

Formula

AvgDailyVariability = 100 * (HighestPEF – LowestPEF) / HighestPEF

References:

1. Buzoianu E, Moiceanu M, Plesca DA. Asthma Control Assessment in Children: Correlation between Asthma Control Test and Peak Expiratory Flow. Maedica (Buchar) 2014; 9:338.

2. National Asthma Education and Prevention Program: Expert Panel Report III: Guidelines for the diagnosis and management of asthma. Bethesda, MD. National Heart, Lung, and Blood Institute, 2007. (NIH publication no. 08-4051)

ThePhysician.org includes risk tools and content intended for use by healthcare professionals. These tools do not give professional advice; physicians and other healthcare professionals who use these tools or databases should exercise their own clinical judgment as to the information they provide.
Please read Disclaimer for additional information.

PEF Variabilty

0-14 Variability: Uncharacteristic of Asthma
15-19 Variability: Supports dx of asthma
20-30 Variability: Mild Persistant Asthma
31-100 Variability: Moderate to severe persistant

Formula

AvgDailyVariability = 100 * (HighestPEF – LowestPEF) / HighestPEF

References:

1. Buzoianu E, Moiceanu M, Plesca DA. Asthma Control Assessment in Children: Correlation between Asthma Control Test and Peak Expiratory Flow. Maedica (Buchar) 2014; 9:338.

2. National Asthma Education and Prevention Program: Expert Panel Report III: Guidelines for the diagnosis and management of asthma. Bethesda, MD. National Heart, Lung, and Blood Institute, 2007. (NIH publication no. 08-4051)

ThePhysician.org includes risk tools and content intended for use by healthcare professionals. These tools do not give professional advice; physicians and other healthcare professionals who use these tools or databases should exercise their own clinical judgment as to the information they provide.
Please read Disclaimer for additional information.