Document Detail


Physiologic effects of respirator dead space and resistance loading.
MedLine Citation:
PMID:  7131109     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Air-purifying respirators impose several loads on breathing. The effects of inspiratory flow resistance, respiratory dead space such as that of a full-face mask, and moderate exercise and maximal exercise were assessed alone and in combination in nine normal volunteers. There were significant effects on respiratory timing variables (e.g., inspiratory time, inspiratory: expiratory time ratio), peak mouth pressure and peak inspiratory flow rate. Only minimal effects on heart rate were noted. These results suggest that prospective workers who must utilize respirators should be observed during exercise as well as at rest and that a respirator dead space and inspiratory resistance should not produce a significant heart rate change but should lead to adaptation of the inspiratory: expiratory time ratio. Workers who show atypical responses should be assessed particularly carefully.
Authors:
P Harber; R J Tamimie; A Bhattacharya; M Barber
Related Documents :
9239989 - Lactic threshold vs ventilatory threshold during a ramp test on a cycle ergometer.
948739 - Ventilatory and heart rate adjustments during submaximal and maximal exercise in patien...
21492089 - Exercise for the overweight and obese.
11915979 - Alternans in qrs amplitude during ventricular tachycardia.
8153449 - Does peak inspiratory flow contribute to setting vo2max? a test of symmorphosis.
10228119 - Physiologic response of ventilator-dependent patients with chronic obstructive pulmonar...
11174349 - Effect of metoprolol on rest and exercise left ventricular systolic and diastolic funct...
8104879 - Increased immune activation during and after physical exercise.
21993029 - The effect of rest interval length on multi and single-joint exercise performance and p...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of occupational medicine. : official publication of the Industrial Medical Association     Volume:  24     ISSN:  0096-1736     ISO Abbreviation:  J Occup Med     Publication Date:  1982 Sep 
Date Detail:
Created Date:  1982-12-21     Completed Date:  1982-12-21     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  7502807     Medline TA:  J Occup Med     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  681-9     Citation Subset:  IM; S    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Adult
Female
Heart Rate
Humans
Male
Physical Exertion
Protective Devices*
Respiration*
Respiratory Dead Space
Respiratory Protective Devices*
Tidal Volume
Work of Breathing

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Control of manual lifting hazards: II. Job redesign.
Next Document:  Role of exercise testing in assessing functional respiratory impairment due to asbestos exposure.