Reduction of peak expiratory flow after a 5-meter dive with extreme exertion

2020 ◽  
pp. 461-466
Author(s):  
Nico A.M. Schellart ◽  
◽  
Keyword(s):  
Peak Expiratory Flow ◽  
Pulmonary Ventilation ◽  
Swimming Velocity ◽  
Forced Expiration ◽  
Small Contribution ◽  
Expiratory Muscle ◽  
Open Sea ◽  
Expiratory Flow ◽  
Flow Variables ◽  
Mean Heart Rate

The effects of physically exerting scuba dives on the airways are expected to affect the respiratory system and therefore the spirometric flow indices directly after surfacing. After on-air open-sea dives, the flow indices were examined with standard spirometry (maximal forced expiration) within 10 minutes pre- and post-dive. Twenty volunteers, age 49±14 years (m±SD) equipped with a dive computer to record the dive profile, cylinder pressures and water temperature (27°C), as well as a hear rate monitor, performed 5-meter dives of 27 minutes at maximal swimming velocity (v). Mean pulmonary ventilation (PV) was 48±10 ambient L/minute (aL.min-1). Mean v was 34±6 meters/minute and mean heart rate 143 beats per minute, about 80% of the on-land theoretical maximum. None of the flow variables changed except a decrease of 7.1%±8.3 (p=0.001) of the peak expiratory flow (PEF), pre-dive of 11.2±2.7 L/minute. A likely major cause of the reduction of PEF is expiratory muscle fatigue. A small contribution of subclinical pulmonary edema cannot be excluded. The inhalation of dry air and the cooling of the airways are expected to affect PEF minimally. Although the change is normally clinically irrelevant, during emergency it may be of importance.

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.

scholarly journals Gambaran Arus Puncak Ekspirasi (APE) dan Kontrol Asma pada Pasien Asma

2019 ◽  
Vol 10 (3) ◽  
pp. 193
Author(s):  
Akbar Nur ◽  
Muhammad Amin ◽  
Muhammad Sajidin ◽  
Kusnanto Kusnanto
Keyword(s):  
Asthma Control ◽  
Peak Expiratory Flow ◽  
Peak Flow ◽  
Forced Expiration ◽  
Control Test ◽  
Asthma Control Test ◽  
Flow Meter ◽  
Asthmatic Patients ◽  
Expiratory Flow ◽  
And Control

Asthma is a chronic inflammatory airway disease characterized by episodic wheezing, coughing, and chest tightness due to airway obstruction. The aim of this study was to identify the peak expiratory flow (APE) and control of asthma in asthmatic patients at the Poly Paru Airlangga University Hospital and Home Haji General Hospital) Surabaya. This research method was descriptive study with a sample of 78 respondents. APE was measured using a Peak Flow Meter and asthma control using the Asthma Control Test (ACT) questionnaire. This study showed that APE and asthma control in all study subjects were 27-88% of the standard value. It can be concluded that there was a decrease in Peak Forced Expiration Flow and control of asthma in asthmatic patients. This study is expected to be a source of information for health professionals especially nurses regarding the value of Forced Expiration Peak Flow (APE) and asthma control in asthmatic patients. Keywords: forced peak expiratory flow (APE); asthma control ABSTRAK Asma adalah penyakit jalan napas inflamasi kronis yang ditandai dengan mengi episodik, batuk, dan sesak dada akibat obstruksi jalan napas.tujuan penelitian ini adalah untuk mengidentifikasi Arus Puncak Ekspirasi (APE) dan kontrol asma pada pasien asma di poli Paru Rumah Sakit Universitas Airlangga dan Rumah Sakit Umum Haji) Surabaya. Metode penelitian ini studi deskriptif dengan ukran sampel 78 responden. APE diukur menggunakan Peak Flow Meter dan kontrol asma menggunakan kuisioner Asthma Control Test (ACT). Penelitian ini menunjukkan bahwa APE dan kontrol asma pada seluruh subyek penelitian 27-88 % dari nilai standar.dapat disimpulkan bahwa terdapat penurunan Arus Puncak Ekspirasi Paksa dan kontrol asma pada pasien asma. Penelitian ini diharapkan menjadi sumber informasi bagi tenaga kesehatan khsusnya perawat mengenai nilai Arus Puncak Ekspirasi Paksa (APE) dan kontrol asma pada pasien asma. Kata kunci: arus puncak ekspirasi paksa (APE); kontrol asma

Peak expiratory flow rate and thoracic mobility in people with fibromyalgia. A cross sectional study

2019 ◽  
Vol 19 (4) ◽  
pp. 755-763
Author(s):  
Kent Jonsson ◽  
Magnus Peterson
Keyword(s):  
Peak Expiratory Flow ◽  
Flow Rate ◽  
Peak Expiratory Flow Rate ◽  
Respiratory Function ◽  
Spinal Mobility ◽  
Forced Expiration ◽  
Healthy Controls ◽  
Cross Sectional ◽  
Chest Expansion ◽  
Expiratory Flow

Abstract Background and aims Fibromyalgia (FM) is characterized by chronic widespread pain and affects approximately 1–3% of the general population. Respiratory function has not been given much consideration in people with FM. Few studies have been published concerning FM and respiratory function and conflicting data still exist. The aim of this study was to compare differences in forced expiration, but also to investigate chest expansion, spinal mobility and segmental pain intensity between a group with fibromyalgia and healthy controls. Methods Forty-one women with diagnosed FM based on American College of Rheumatology 1990 criteria and forty-one controls without pain matched for age and gender participated in this cross-sectional study. For evaluation of forced expiration, a Wright peak expiratory flow rate meter was used. A tape measure was used to measure the mobility of the thorax at maximum inhalation and exhalation known as chest expansion. Spinal mobility was measured with the Cervico-thoracic ratio method. The spinal mobility was measured as range of motion from C7 to 15 cm below in flexion and manual palpation was conducted between C7-T5. For differences in pain intensity a palpation-index was defined for each level, respectively; C7-T1, T1-2, T2-3, T3-4 and T4-5 by calculating the mean value for the four different palpation points for each motion segment. A combined measure of expiration and thoracic mobility (expiratory/inspiratory ratio) was calculated by dividing peak expiratory flow rate (L/min) with chest expansion (cm). Statistical analyses included descriptive statistics to describe subjects and controls, means and standard deviation to compare differences between groups and student-t and Chi-square (χ2) tests, using SPSS 22 software. Confidence interval was set to 95%. Results In the FM group 17 had the diagnosis for more than 5 years and 24 less than 5 years. The FM group demonstrated significantly lower forced expiration (p < 0.018), less thoracic expansion (p < 0.001), reduced spinal mobility (p < 0.029), higher expiratory-inspiratory ratio value (p < 0.001) and increased palpation pain over C7-T5 (p < 0.001) compared to healthy controls. There were more smokers in the FM group (n = 9) compared to the controls (n = 5) though this difference was not statistically significant (p < 0.24) and excluding the few smokers yielded similar result. No significant correlations for manual palpation, chest expansion, peak expiratory flow rate and spinal mobility were found in the FM group. Conclusions Women with FM demonstrated significantly lower forced expiration and thoracic mobility compared to healthy controls. Implications The results of this study point to a plausible restriction of respiratory function which in turn may have effect on physical endurance and work capacity in people with FM.

No effect of artificial gravity on lung function with exercise training during head-down bed rest

2015 ◽  
pp. 1-7
Author(s):  
Longxiang Su ◽  
Yinghua Guo ◽  
Yajuan Wang ◽  
Delong Wang ◽  
Changting Liu
Keyword(s):  
Lung Function ◽  
Pulse Rate ◽  
Vital Capacity ◽  
Pulmonary Ventilation ◽  
Bed Rest ◽  
Forced Expiratory Volume ◽  
Observation Time ◽  
Artificial Gravity ◽  
Postural Changes ◽  
Expiratory Flow

AbstractTo explore the effectiveness of microgravity simulated by head-down bed rest (HDBR) and artificial gravity (AG) with exercise on lung function. Twenty-four volunteers were randomly divided into control and exercise countermeasure (CM) groups for 96 h of 6° HDBR. Comparisons of pulse rate, pulse oxygen saturation (SpO2) and lung function were made between these two groups at 0, 24, 48, 72, 96 h. Compared with the sitting position, inspiratory capacity and respiratory reserve volume were significantly higher than before HDBR (0° position) (P&lt; 0.05). Vital capacity, expiratory reserve volume, forced vital capacity, forced expiratory volume in 1 s, forced inspiratory vital capacity, forced inspiratory volume in 1 s, forced expiratory flow at 25, 50 and 75%, maximal mid-expiratory flow and peak expiratory flow were all significantly lower than those before HDBR (P&lt; 0.05). Neither control nor CM groups showed significant differences in the pulse rate, SpO2, pulmonary volume and pulmonary ventilation function over the HDBR observation time. Postural changes can lead to variation in lung volume and ventilation function, but a HDBR model induced no changes in pulmonary function and therefore should not be used to study AG CMs.

EFFECT OF BODY MASS INDEX ON PEAK EXPIRATORY FLOW RATE

2019 ◽  
Vol 3 (9) ◽  
Author(s):  
K. Subramanyam ◽  
Dr. P. Subhash Babu
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
Peak Expiratory Flow ◽  
Flow Rate ◽  
Peak Expiratory Flow Rate ◽  
Normal Weight ◽  
The Body ◽  
Health Care Centre ◽  
Expiratory Flow ◽  
Group B

Obesity has become one of the major health issues in India. WHO defines obesity as “A condition with excessive fat accumulation in the body to the extent that the health and wellbeing are adversely affected”. Obesity results from a complex interaction of genetic, behavioral, environmental and socioeconomic factors causing an imbalance in energy production and expenditure. Peak expiratory flow rate is the maximum rate of airflow that can be generated during forced expiratory manoeuvre starting from total lung capacity. The simplicity of the method is its main advantage. It is measured by using a standard Wright Peak Flow Meter or mini Wright Meter. The aim of the study is to see the effect of body mass index on Peak Expiratory Flow Rate values in young adults. The place of a study was done tertiary health care centre, in India for the period of 6 months. Study was performed on 80 subjects age group 20 -30 years, categorised as normal weight BMI =18.5 -24.99 kg/m2 and overweight BMI =25-29.99 kg/m2. There were 40 normal weight BMI (Group A) and 40 over weight BMI (Group B). BMI affects PEFR. Increase in BMI decreases PEFR. Early identification of risk individuals prior to the onset of disease is imperative in our developing country. Keywords: BMI, PEFR.

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