Asthma - Peak Flow Meter
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KURSUS PENGENDALIAN ASTHMA 5/10/06 KPL MAHMOODIAH
PEAK FLOW METER Penggunaan dan penilaian
WHAT IS PEAK FLOW METER?
A simple, portable, inexpensive device that you blow into
It measures the fastest rate of air (airflow) that you can blow out of the lungs or peak expiratory flow rate (PEFR).
It records air flow in litres/min
WHAT IS PEAK FLOW METER?
A peak flow for asthma is like a thermometer for fever, BP set for HPT
A tool that helps you monitor what’s going on inside your body.
A peak flow meter can help to determine airway changes & better management of asthma.
PEFR IN DIAGNOSIS OF ASTHMA
PEF increases > 15% 15-20min after inhalation of a rapid-acting B2-agonist.
PEF varies >20% from morning measurement upon arising to measurement 12hrs later in pts who are taking a bronchodilator( > 10% in pts who are not taking a bronchodilator).
PEF decreases more than 15% after 6 min of sustained running or exercise.
PEAK FLOW RATE – valuable tool in asthma management Determine the severity of asthma Response to treatment during an acute asthma episode Monitor progress in treatment of chronic asthma & provide objective information for any possible adjustments in therapy Detect worsening in lung function & thereby avoid a possible serious flare-up in asthma with early intervention
When should a PEAK FLOW METER be used?
Peak flow meters should be used regularly to check how well the asthma is being controlled.
The National Heart, Lung, and Blood Institute (NHLBI) recommends measuring lung function during the following times: every morning, before taking asthma medications during asthma symptoms or an asthma attack after taking medication for an asthma attack other times recommended by your physician
HOW TO USE A PEAK FLOW METER
Make sure the device reads zero or is at base level Stand up (unless you have a physical disability),hold the PFM without restricting movement of the marker. Take as deep of breath as possible Place the meter in your mouth & seal your lips around the mouthpiece. Breathe out as hard and as fast as possible
HOW TO USE A PEAK FLOW METER
Do not cough, spit or let your tongue block the mouthpiece Write down the value obtained Return the marker to zero. Repeat the process two additional times, and record the highest of the three numbers in your chart. Record PEFR before & after using inhalers
PEAK FLOW CHART
Keep a chart of peak flow reading with each day recorded in.
PEAK FLOW VARIABILITY
PEAK FLOW VARIABILITY Important measure of asthma control Without asthma or well-controlled asthma, PEFR vary less 15%. PEFR is useful in monitoring the severity of asthma at night. A decrease of 15% or greater from the previous night’s measurement may indicate nocturnal asthma
PEAK FLOW CHART American Lung Association
WHAT IS NORMAL PEAK FLOW READING?
Normal PEFR reading vary. Depending on age, height & gender Normally, in healthy people, peak flow readings vary slightly from time to time. The reading is often slightly higher in the evening compared to the morning.
PEAK FLOW READING & HEIGHT & PEFR ZONING
PERSONAL BEST READING
a 25-year-old man, who is 6'1" (185cm or 1.85m) tall, to have an average peak flow of 635 litres per minute.
a 40-year-old woman, who is 5'2" (157cm or 1.57m) tall, to have an average peak flow of 465 litres per minute.
a child who is between 6 and 15 years of age and 4'7" (140cm or 1.40m) tall, to have an average peak flow of 300 litres per minute.
“PERSONAL BEST READING”
The personal best peak flow is the highest PEFR of a patient. Can be achieve over 2 – 3 week period when the asthma is under good control. Personal best values will change as children grow taller & as disease status changes ‘periodically readjust’
DETERMINE PERSONAL BEST Always use the same peak flow meter. Record peak flow reading twice a day for 2 weeks. The highest PEFR value is the ‘personal best. Asthmatic patient should make every effort to maintain values within 80% of personal best value.
WHAT ARE PEAK FLOW ZONES
Peak flow zones are based on the traffic light concept: red means danger, yellow means caution, and green means safe. The goal of the peak flow zones is to help to recognize when the asthma may start to become uncontrolled. The goal is to stay within the 80 percent value of the personal best peak flow measurement.
PEAK FLOW ZONES Green: PEFR 80 – 100% of
personal best; asthma is under control. Relatively symptom-free Patient can maintain current asthma management. PEFR constantly in the green zone with minimal variation – consider gradually decreasing daily medication
PEAK FLOW ZONES
Yellow: PEFR 50 -79% of personal best ‘Caution’ as asthma is getting worse; A temporary increase in asthma medication is indicated If on chronic medication, maintenance therapy need to be increased.
PEAK FLOW ZONES Red: PEFR below 50% of personal best
‘Danger’- medical alert, Asthma management program is failing to control symptoms. Used inhaled bronchodilator. If PEFR reading do not return to yellow zone, seek medical help immediately. Maintenance therapy need to be increased
TERIMA KASIH …..
PEAK FLOW METER Penggunaan dan penilaian
WHAT IS PEAK FLOW METER?
A simple, portable, inexpensive device that you blow into
It measures the fastest rate of air (airflow) that you can blow out of the lungs or peak expiratory flow rate (PEFR).
It records air flow in litres/min
WHAT IS PEAK FLOW METER?
A peak flow for asthma is like a thermometer for fever, BP set for HPT
A tool that helps you monitor what’s going on inside your body.
A peak flow meter can help to determine airway changes & better management of asthma.
PEFR IN DIAGNOSIS OF ASTHMA
PEF increases > 15% 15-20min after inhalation of a rapid-acting B2-agonist.
PEF varies >20% from morning measurement upon arising to measurement 12hrs later in pts who are taking a bronchodilator( > 10% in pts who are not taking a bronchodilator).
PEF decreases more than 15% after 6 min of sustained running or exercise.
PEAK FLOW RATE – valuable tool in asthma management Determine the severity of asthma Response to treatment during an acute asthma episode Monitor progress in treatment of chronic asthma & provide objective information for any possible adjustments in therapy Detect worsening in lung function & thereby avoid a possible serious flare-up in asthma with early intervention
When should a PEAK FLOW METER be used?
Peak flow meters should be used regularly to check how well the asthma is being controlled.
The National Heart, Lung, and Blood Institute (NHLBI) recommends measuring lung function during the following times: every morning, before taking asthma medications during asthma symptoms or an asthma attack after taking medication for an asthma attack other times recommended by your physician
HOW TO USE A PEAK FLOW METER
Make sure the device reads zero or is at base level Stand up (unless you have a physical disability),hold the PFM without restricting movement of the marker. Take as deep of breath as possible Place the meter in your mouth & seal your lips around the mouthpiece. Breathe out as hard and as fast as possible
HOW TO USE A PEAK FLOW METER
Do not cough, spit or let your tongue block the mouthpiece Write down the value obtained Return the marker to zero. Repeat the process two additional times, and record the highest of the three numbers in your chart. Record PEFR before & after using inhalers
PEAK FLOW CHART
Keep a chart of peak flow reading with each day recorded in.
PEAK FLOW VARIABILITY
PEAK FLOW VARIABILITY Important measure of asthma control Without asthma or well-controlled asthma, PEFR vary less 15%. PEFR is useful in monitoring the severity of asthma at night. A decrease of 15% or greater from the previous night’s measurement may indicate nocturnal asthma
PEAK FLOW CHART American Lung Association
WHAT IS NORMAL PEAK FLOW READING?
Normal PEFR reading vary. Depending on age, height & gender Normally, in healthy people, peak flow readings vary slightly from time to time. The reading is often slightly higher in the evening compared to the morning.
PEAK FLOW READING & HEIGHT & PEFR ZONING
PERSONAL BEST READING
a 25-year-old man, who is 6'1" (185cm or 1.85m) tall, to have an average peak flow of 635 litres per minute.
a 40-year-old woman, who is 5'2" (157cm or 1.57m) tall, to have an average peak flow of 465 litres per minute.
a child who is between 6 and 15 years of age and 4'7" (140cm or 1.40m) tall, to have an average peak flow of 300 litres per minute.
“PERSONAL BEST READING”
The personal best peak flow is the highest PEFR of a patient. Can be achieve over 2 – 3 week period when the asthma is under good control. Personal best values will change as children grow taller & as disease status changes ‘periodically readjust’
DETERMINE PERSONAL BEST Always use the same peak flow meter. Record peak flow reading twice a day for 2 weeks. The highest PEFR value is the ‘personal best. Asthmatic patient should make every effort to maintain values within 80% of personal best value.
WHAT ARE PEAK FLOW ZONES
Peak flow zones are based on the traffic light concept: red means danger, yellow means caution, and green means safe. The goal of the peak flow zones is to help to recognize when the asthma may start to become uncontrolled. The goal is to stay within the 80 percent value of the personal best peak flow measurement.
PEAK FLOW ZONES Green: PEFR 80 – 100% of
personal best; asthma is under control. Relatively symptom-free Patient can maintain current asthma management. PEFR constantly in the green zone with minimal variation – consider gradually decreasing daily medication
PEAK FLOW ZONES
Yellow: PEFR 50 -79% of personal best ‘Caution’ as asthma is getting worse; A temporary increase in asthma medication is indicated If on chronic medication, maintenance therapy need to be increased.
PEAK FLOW ZONES Red: PEFR below 50% of personal best
‘Danger’- medical alert, Asthma management program is failing to control symptoms. Used inhaled bronchodilator. If PEFR reading do not return to yellow zone, seek medical help immediately. Maintenance therapy need to be increased
TERIMA KASIH …..
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