Peak flow

2007 ◽  
pp. 331-334
Keyword(s):  
Peak Flow ◽  
Full Inspiration ◽  
Expiratory Flow

Peak flow 332 Peak flow is defined as the greatest expiratory flow achieved from a maximally forced expiratory effort when starting from a position of full inspiration. • Measurement should be performed as best of three with standardized meter (EU scale). There is no need to return the measuring plunger to zero following each attempt....

scholarly journals Peak Expiratory Flow Measured by the Wright Peak Flow Meter

BMJ ◽  
1961 ◽  
Vol 1 (5236) ◽  
pp. 1365-1366 ◽  
Author(s):  
C. M. Tinker
Keyword(s):  
Peak Expiratory Flow ◽  
Peak Flow ◽  
Flow Meter ◽  
Expiratory Flow

Peak expiratory flow and the resistance of the mini-Wright peak flow meter

1996 ◽  
Vol 9 (4) ◽  
pp. 828-833 ◽  
Author(s):  
O.F. Pedersen ◽  
T.R. Rasmussen ◽  
Ø. Omland ◽  
T. Sigsgaard ◽  
Ph.H. Quanjer ◽  
...  
Keyword(s):  
Peak Expiratory Flow ◽  
Peak Flow ◽  
Flow Meter ◽  
Expiratory Flow

Peak Expiratory Flow(PEF) Measured by Peak Flow Meter and Correlation Between PEF and Other Ventilatory Parameters in Healthy Children

2001 ◽  
Vol 51 (3) ◽  
pp. 248
Author(s):  
Chul Ho Oak ◽  
Kai Hag Sohn ◽  
Ki Ryong Park ◽  
Hyun Myung Cho ◽  
Tae Won Jang ◽  
...  
Keyword(s):  
Peak Expiratory Flow ◽  
Peak Flow ◽  
Healthy Children ◽  
Flow Meter ◽  
Ventilatory Parameters ◽  
Expiratory Flow

Maximum airflow through the nose in humans

1991 ◽  
Vol 70 (3) ◽  
pp. 1369-1376 ◽  
Author(s):  
J. Pertuze ◽  
A. Watson ◽  
N. B. Pride
Keyword(s):  
Peak Flow ◽  
Maximum Flow ◽  
Nasal Breathing ◽  
Flow Capacity ◽  
Maximum Expiratory Flow ◽  
Maximum Effort ◽  
Flow Through ◽  
Expiratory Flow ◽  
Nasal Flow ◽  
Alpha Adrenergic Agonist

Inspiratory and expiratory flow via the nose and via the mouth during maximum-effort vital capacity (VC) maneuvers have been compared in 10 healthy subjects. Under baseline conditions maximum flow via the nose was lower than that via the mouth in the upper 50-60% of the VC on expiration and throughout the VC on inspiration. The mean ratio of maximum inspiratory to maximum expiratory flow at mid-VC was 1.38 during mouth breathing and 0.62 during nasal breathing. Inspiratory flow limitation with no increase in flow through the nose as driving pressure was increased above a critical value (usually between 12 and 30 cmH2O) was found in all six subjects studied. Stenting the alae nasi in seven subjects increased peak flow via the nose from a mean of 3.49 to 4.32 l/s on inspiration and from 4.83 to 5.61 l/s on expiration. Topical application of an alpha-adrenergic agonist in seven subjects increased mean peak nasal flow on inspiration from 3.25 to 3.89 l/s and on expiration from 5.03 to 7.09 l/s. Further increases in peak flow occurred with subsequent alan stenting. With the combination of stenting and topical mucosal vasoconstriction, nasal peak flow on expiration reached 81% and, on inspiration, 79% of corresponding peak flows via the mouth. The results demonstrate that narrowing of the alar vestibule and the state of the mucosal vasculature both influence maximum flow through the nose; under optimal conditions, nasal flow capacity is close to that via the mouth.

An evaluation of peak expiratory flow measured on the smart peak flow meter

2020 ◽  
Author(s):  
Shirley Coelho ◽  
Vicky Moore ◽  
Gareth Walters ◽  
Sherwood Burge
Keyword(s):  
Peak Expiratory Flow ◽  
Peak Flow ◽  
Flow Meter ◽  
Expiratory Flow

scholarly journals Comparison of peak expiratory flow measurement by Mini-Wright peak flow meter and electronic spirometer in healthy elementary school children

2016 ◽  
Vol 44 (6) ◽  
pp. 248
Author(s):  
Mardjanis Said ◽  
Sudigdo Sastroasmoro ◽  
Bambang Supriyatno ◽  
Yovita Ananta
Keyword(s):  
Peak Expiratory Flow ◽  
Peak Flow ◽  
Method Comparison ◽  
Cross Sectional Study ◽  
Flow Meter ◽  
Cross Sectional ◽  
History Of ◽  
Routine Physical Examination ◽  
The Subject ◽  
Expiratory Flow

Objective This study aims to compare peak expiratory flow mea-surement by peak flow meter and electronic spirometer in healthyelementary school children.Methods This was a cross-sectional study performed in an el-ementary school near Cipto Mangunkusumo hospital (SDNPegangsaan 01). The study group consisted of healthy childrenaged 6-12 year old. Data regarding identity and history of illnesswas taken in each subject. Routine physical examination was per-formed and recorded. Each subject performed lung function testsby means of electronic spirometer AS-7 as well as by Mini-Wrightpeak flow meter. The subject should perform a minimum of threemaneuvers for each method where only the best result was re-corded. Method comparison test to assess agreement betweentwo methods was employed in this study.Results There were 10 males and 15 females enrolled in this study.None of the subjects currently have any respiratory symptoms andsigns. This study found that the mean peak expiratory flow (PEF) byspirometer was 226.8±73.13 L/min while by peak flow meter was223.0±45.05. Mean difference between spirometer and peak flowmeter measurements is 6.2 with standard deviation of 60.82. Thesevalues resulted in limits of agreement of -115.44 to +127.84 L/min.Conclusions This study finds disagreement between electronicspirometer and Mini-Wright peak flow meter in measuring peakexpiratory flow, therefore these two devices cannot be usedinterchangeably. Mini-Wright peak flow meter still has a role inhome monitoring, but the physician should interpret the resultscarefully.

Self monitoring of peak expiratory flow rate in asthma

1982 ◽  
Vol 20 (19) ◽  
pp. 73-74 ◽  
Keyword(s):  
Peak Expiratory Flow ◽  
Flow Rate ◽  
Peak Expiratory Flow Rate ◽  
Peak Flow ◽  
Forced Expiration ◽  
Deep Inspiration ◽  
Ventilatory Function ◽  
Self Monitoring ◽  
Expiratory Flow ◽  
Predicted Values

Peak Expiratory Flow Rate (PEF) is a simple and reproducible indicator of ventilatory function.1 It is the maximal airflow sustained for at least 10 msec during a forced expiration after deep inspiration. PEF is easy to measure with the Wright Peak Flow Minimeter. Results from this simple lightweight instrument correlate well with those from the older, bigger model.2 Predicted values vary with age, sex and height in adults;3,4 in children they are related to height alone.4,5 It is usual to record the best of three readings.

Assessment of Peak Expiratory Flow Rate in Building Construction Workers in Maharashtra

2021 ◽  
Vol 11 (6) ◽  
pp. 388-391
Author(s):  
Aditi Tanna ◽  
Sambhaji B. Gunjal
Keyword(s):  
Peak Expiratory Flow ◽  
Flow Rate ◽  
Peak Expiratory Flow Rate ◽  
Peak Flow ◽  
Building Construction ◽  
Construction Workers ◽  
Dust Particles ◽  
Construction Sites ◽  
Flow Meter ◽  
Expiratory Flow

Background: In this era of globalization one of the growing industries is the construction industry and there are various occupational problems faced by the workers especially in Asian countries mostly in India; the problems are related to both physical and mental health. All the construction sites generate high concentration of dust particles from cement, silica, asbestos, concrete, wood, stand and stand that causes respiratory problems in the workers. PEFR is the maximum air that is generated after forceful expiration, after full lung inspiration. So if there is any accumulation of dust particles the PEFR decreases as the elasticity of lungs to recoil is distrusted due to the lodged particles. Material and Method: A descriptive observation study was carried out on 50 building construction workers. The purpose of the study was explained and informed consent was taken. The PEFR was measured using peak expiratory flow meter. The data was analyzed using standard statistical software. Result: The procedure of using peak flow meter that was carried out for 3 times and the highest value from the three was considered as peak flow rate, using statistical method mean and standard deviation were calculated. The mean of Peak Expiratory Flow Rate is 321.1 L/min. Conclusion: This study concluded that the peak expiratory flow rate is reduced in building construction workers those who are working for than 2 years on the construction sites. Key words: construction workers, occupation diseases, PEFR, peak expiratory flow meter.

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