HOW TO ASCERTAIN ASTHMA: THE DIAGNOSTIC TESTS – BREATH TESTS OR LUNG FUNCTION TESTS – PEAK-FLOW MONITORING – INTERPRETING PEFR READING
Friday, February 11th, 2011HOW TO ASCERTAIN ASTHMA: THE DIAGNOSTIC TESTS – BREATH TESTS OR LUNG FUNCTION TESTS – PEAK-FLOW MONITORING – INTERPRETING PEFR READINGKnowledge to read PEFR accurately can help predict the condition and provide valuable time and opportunity to take necessary steps to prevent an attack. More specifically, knowing PEFR helps in the following ways:A drop in PEFR indicates that there are allergenic substances in the environment. An effort should be made to localise the cause and prevent its recurrence.How to Ascertain Asthma 65In some cases, it also helps in the diagnosis of the disease. It has been seen that if within a day, there is variability of PEFR of up to 20 per cent, or an improvement of up to 20 per cent after giving a bronchodilator, it is quite likely that the condition is asthma.PEFR reading also helps in monitoring the progress of a particular mode of treatment.There are two very important reasons for taking peak flow reading at home. First, asthma does not behave the same way 24 hours a day. It tends to get worse at night and get better during the day. Taking a peak flow meter reading at home helps the physician to know the change in the condition. Second, having a peak flow meter at home gives sufficient time to consult the doctor and get proper instruction for its management. Nine out of ten times, a physician experienced with home Peak Flow Meter can help neutralize an attack quickly, and avoid the emergency room of a hospital.Who Should Use a Peak Flow Meter?• Children who experience severe attacks with little warning.• Children who need to travel long distance to receive medical attention.• Children who require high-dose inhaled corticosteroids or daily oral corticosteroids.• Children with wild variations in peak flow, i.e., greater than 20 per cent of their best peak flow.• Children whose medical history appears to provide an unsatisfactory guide to treatment.*56\260\8*