4.57+-1.28); Forced
Expiratory Volume in First Second (2.99+-0.61 vs.
Another study from People's Republic of China revealed that a lower peak
expiratory flow rate was associated with increased mortality from respiratory causes like bronchogenic carcinoma and also in cardiovascular diseases.
The mean lung volume for forced vital capacity was 2.21+-0.75, forced
expiratory volume in 1 second 2.08+-0.73, ratio between the two 92.9+-4.7, peak
expiratory flow 231.3 +- 70.5 and forced
expiratory flow between 25% and 75% expired volume was,,, 2.68+-1.2.
In addition, Biring et al, (14) found a reduction in
expiratory reserve volume, FVC, [FEV.sub.1], functional residual capacity, forced
expiratory flow 25-75%, and maximum voluntary ventilation in their study on adults with extreme obesity.
The respiratory parameters including FEV1%, FVC%, FEV1/FVC%, maximal voluntary ventilation (MVV), and peak
expiratory flow rate (PEFR) were measured using SPIROLAB II (MIR) software.
The maximum inspiratory pressure (MIP) and maximum
expiratory pressure (MEP) measurements were performed with an MDV-500 Globalmed digital manovacuometer, which is graduated from - 500 / + 500 cm[H.sub.2]O.
PERCENT PREDICTED PEAK
EXPIRATORY FLOW: Kew, et al, measured the effect of intravenous magnesium over percent-predicted peak
expiratory flow.
Peak
expiratory flow rate was determined via standard peak
expiratory flow rate device in both the groups after the inhalation of standard dose of salbutamol.
Often reported benefits are: Increased inspiratory muscle strength Increased
expiratory muscle strength Reduced breathlessness | OPEP: Designed to interrupt the
expiratory airflow, which results in the airways vibrating.
In the newest study conducted by American Thoracic Society, the researchers measured force
expiratory flows (FEFs) at 3 and 12 months of babies born to 252 mothers who smoked.
COPD mainly limits airflow during expiration, possibly limiting the diagnostic yield of inspiratory-only protocols; accordingly, the Fleischner Society has suggested the potential additive value of
expiratory acquisitions [18].
Expiratory muscle strength is important for breath out against water resistance.