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Abstract
The present study was carried out to correlate the ventilatory function test in the form of (FEV1, FVC, FVC/ FEV1) with bed side tests:
-Snider match test.
-Forced expiratory time.
-Peak expiratory flow.
The patients were classified into two groups:
Group I: Comprised 100 selected healthy non-smokers persons 65 males and 35 females with age ranging from 27-55 years with mean age (35.3±9.2).
Group II: Comprised 300 patients with airflow limitation according to FEV1 less than 70% of predicted. (Manning and Schwartazstein, 1994), 170 males and 130 females, with age ranging from 35-75 years with mean age (53.9±12.7). There were 215 smokers and 85 non smokers.
The patients in group II subdivided according FEV1% to:
- Mild (FEV1 50-70%) 100 patients.
- Moderate (FEV1 30-50%) 150 patients.
- Severe (FEV1 > 30%) 50 patients.
All of studied groups were subjected to:
-Full history taking.
-Clinical examination.
-Investigation :
•Plain chest X-ray (P-A).
•Pulmonary function (Flow – volume loop)
•Bed side test:
oSnider match test.
oFET
oPEFR
-There was positive significant correlation between bed side tests and ventilatory functions.
1.No patients with FEV1 of less than 1.5 liters passed the match test. However 60 patients with FEV1 of greater than 1.5 liters failed.
2.Prolongation of forced expiratory time more than 6 seconds indicate airflow limitation and according to the classification of patients in group II there was prolongation of FET from (6-7 sec. in mild, 7-9 sec. in moderate, 9-12 sec. in severe) airflow limitation.
3.PEF from (250-350 L/M in mild, 130-250 L/M in moderate, less than 130 L/M in severe) air flow limitation.