According to data reported in literature tidal @entity1353 parameters and especially tidal expiratory flow pattern parameters can be useful in distinguishing @entity1030 . The purpose of the present study was to investigate the parameters of the tidal @entity1353 in healthy @entity1 and @entity1 with @entity1030 . The study sample included 158 @entity1 with @entity1030 in clinically stable condition and different degree of functional disturbances (FEV1% pred. = 42% +/- 15%; ATS @entity1353 scale = 2.5 +/- 0.9; mean +/- SD). The control group of healthy subjects consisted of 43 @entity1 and 37 @entity1 . The obtained results show that TPTEF/TE (the time necessary to reach the peak expiratory flow in tidal @entity1353 over the total expiratory time) and VPTEF/VE (the volume necessary to reach the peak expiratory flow in tidal @entity1353 over the total expiratory volume) are an independent aspect of tidal @entity1353 . In healthy @entity1 these parameters show weak negative correlation with age and high variability. In @entity1030 they are statistically significantly lower than those of healthy @entity1 but, since they are highly variable, they cannot be used for an individual assessment. The increase of the mean inspiratory flow (TV/Tin) and the shortening of VPTEF/VE, TPTEF/TE and Tin/Ttot, are indicative of the lung mechanics changes which have a bearing on @entity1353 , too. According to factor analysis the parameters of tidal @entity1353 are four separate dimensions: 1. Breathing frequency and respiratory times; 2. Relationship between the respiratory times; 3. Minute ventilation, mean expiratory flow, mean inspiratory flow and tidal volume; 4. Parameters of the expiratory flow VPTEF/VE and TPTEF/TE. The parameters of forced expiration and those of tidal @entity1353 are separate dimensions of the functional profile of @entity1 with @entity1030 .

Characteristics of tidal expiratory flow pattern in healthy XXXX and @entity1 with @entity1030 .

@entity1 :: ('9606', 'Species') :: ['women', 'patients', 'people', 'men'] @entity1030 :: ('MESH:D029424', 'Disease') :: ['chronic obstructive pulmonary disease', 'airflow obstruction', 'COPD'] @entity1353 :: ('MESH:D004417', 'Disease') :: ['breathing', 'dyspnea']
@entity1 :: (9606,Species) :: ['people']
