Diurnal Variation in Peak Expiratory Flow and Forced Expiratory Volume

Goel, Arun

doi:10.7860/jcdr/2015/15156.6661

Cited by 14 publications

(18 citation statements)

References 11 publications

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“…FEV1 is the volume which expired by the person in one second after a maximal inspiration. FEV1 reflects both small and larger airway function 10 and did not change much upon altitude induction 11 , which is also reflected in our study. FEV1/FVC ratio gives an index for airflow limitation 8 .…”

Section: Discussionsupporting

confidence: 82%

“…MEF 25 per cent is the flow rate when 25 per cent of FVC is remaining in the lungs and is an indicator of small airway function. MEF 75 per cent is the flow rate when 75 per cent of FVC is remaining and it reflects fairly large to medium size bronchi condition 10 . MEF 50 per cent is the flow rate when half of FVC is remaining and is indicative of small to medium airway function 10,18 .…”

Section: Discussionmentioning

confidence: 99%

“…MEF 75 per cent is the flow rate when 75 per cent of FVC is remaining and it reflects fairly large to medium size bronchi condition 10 . MEF 50 per cent is the flow rate when half of FVC is remaining and is indicative of small to medium airway function 10,18 . Wolf 19 , et al reported MEF 50 per cent and MEF 75 per cent increased with increasing altitude of 1580 m as compared to 171 m with a mean 11 per cent and 15 per cent rise respectively 19 .…”

Section: Discussionmentioning

confidence: 99%

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Effect of Altitude and Duration of Stay on Pulmonary Function in Healthy Indian Males

et al. 2018

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<p>The study was carried out with the objective to investigate the effect of varying altitude and duration of exposure on blood pressure, heart rate and lung function parameters in healthy Indian soldiers after adopting proper acclimatization schedule. For this purpose 17 soldiers of Indian Army, weight and height matched, were studied after obtaining written consent. Recording of Blood pressure (systolic and diastolic), heart rate and lung function variables (FVC, FEV1, FEV1/FVC%, MVV, FEF25-75%, MEF 25%, MEF 50%, MEF 75%, PEF) were measured at basal (290m), 800m, 3200m (day 10 and day 20) and upon de-induction. Our results demonstrate that with increasing altitude FVC declined, FEV1 did not change and due to these changes FEV1/FVC% increased. Expiratory flow rates including MEF 25%, MEF50% MEF 75%, PEF and mean expiratory flow rate (FEF25-75%) increased upon induction to high altitude. This increase may be due to reduction in air density causing less air resistance which accelerates lung emptying. Though the increase upon induction in all the values was transient and returned to baseline values after de-induction. MVV reflecting respiratory muscle function increased significantly upon induction to altitude in our study and returned to basal values upon de-induction. Understanding respiratory system in mountainous regions and its further correlation with other systems pertaining to acclimatization could help in laying step in unveiling mechanism of human high altitude adaptation.</p>

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Section: Discussionsupporting

confidence: 82%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Effect of Altitude and Duration of Stay on Pulmonary Function in Healthy Indian Males

et al. 2018

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“…The FEV1/FVC ratio is one of the well known markers of obstructive type of lung diseases [9]. FEF 25-75% flow rate is suggestive of anatomical region of mid-airway flow pathology [10]. In our study significant reduction in FEV1/FVC ratio and FEF 25-75% and no change in PEFR is suggestive of mild mid-airway obstruction after exposure to embalming fluid fumes.…”

Section: Rashmi Malhotra Et Al Embalming Fluid-a Poisonous Preservatmentioning

confidence: 46%

Embalming Fluid: A Poisonous Preservation Potion: Effects on Pulmonary Functions of Students

Malhotra¹,

Kathrotia²,

Goel³

et al. 2017

IJAR

Self Cite

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Objective: To explore the effects of acute exposure of embalming fluid fumes on the pulmonary functions in first year medical students. Materials and Methods:The present study was carried out on 40 healthy, non-smoker first year medical students. The participants were exposed to embalming fluid fumes during cadaver dissection for duration of two hours. Pulmonary Function Tests (PFTs) were performed with computerized spirometer, prior to and immediately after the exposure. The outcome measures were Vital capacity (VC), Forced expiratory volume in 1 second (FEV1), FEV1/ FVC ratio, Peak Expiratory Flow Rate (PEFR), FEF 25-75% and subjective symptoms reported by participants. Results:The acute exposure of embalming fluid fumes was associated with significant decrease in FEV1/FVC ratio and FEF 25-75% . Rest of the respiratory parameters did not show significant changes. The chief subjective complaints of the participants were pungent smell (92%), throat congestion (72%), burning sensation in eye (70%), headache (60%), nausea (52%) and rhinorrhoea (45%). Conclusion:The acute exposure to fumes of embalming fluid during cadaver dissection was suggestive of respiratory function dysfunction at the level of mid-airway obstruction and mucosal irritation.KEY WORDS: Embalming fluid fumes, FEV1/FVC ratio, FEF 25-75% .

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“…The subject was asked to take a mouthpiece in the sitting position, and to breathe in and out through the mouth using a nose plug. The forced vital capacity (FVC), forced expiratory volume in one second (FEV1), and maximal voluntary ventilation (MVV) were measured (Goel et al, 2015).…”

Section: Methodsmentioning

confidence: 99%

Aerobic training with rhythmic functional movement: Influence on cardiopulmonary function, functional movement and Quality of life in the elderly women

Shim

Choi²,

Lee³

2019

jhse

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The purpose of this study was to investigate the effects of rhythm of aerobic exercise in elderly women. Thirty subjects were randomly divided into two groups: The aerobic exercise with rhythm (experimental group, n=9) and aerobic exercise without rhythm (control group, n=10). All subjects performed aerobic exercise composed of functional movements. During the exercise, control group subjects were performed the functional movement exercise only to the beat without music or rhythm and experimental group subjects were performed the functional movement exercise to the rhythm of the music. All subjects performed exercise for 50 minutes, twice a week, total of 8 weeks. The forced vital capacity (FVC), forced expiratory volume in one second (FEV1), and maximal voluntary ventilation (MVV) were measured. Functional movements were assessed using FMS (Functional Movement Screen). Quality of life (QOL) were assessed using SF-36. Evaluation was performed before and after 8 weeks of exercise and one month later for follow-up. The FVV, FVC1, MVV, FMS, and SF-36 have shown a significant difference in time as a result of the twoway repeated-measures analysis. The post mean change of FVC1, MVV, FMS, and SF-36 were significantly different between groups. In this study, aerobic exercise, which is composed of rhythmic functional movement, helped improve functional movement and QOL for the elderly women. When the experimental group and the control group were compared, the improvement of the experimental group with music and rhythm was more positive than the exercise using the same functional movement.

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Diurnal Variation in Peak Expiratory Flow and Forced Expiratory Volume

Cited by 14 publications

References 11 publications

Effect of Altitude and Duration of Stay on Pulmonary Function in Healthy Indian Males

Effect of Altitude and Duration of Stay on Pulmonary Function in Healthy Indian Males

Embalming Fluid: A Poisonous Preservation Potion: Effects on Pulmonary Functions of Students

Aerobic training with rhythmic functional movement: Influence on cardiopulmonary function, functional movement and Quality of life in the elderly women

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