| Effects of respirator dead space, inspiratory resistance, and expiratory resistance ventilatory loads. | |
MedLine Citation:
|
PMID: 2773947 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
The effects of respiratorlike inspiratory resistance (IR), expiratory resistance (ER), and dead space (DS) were assessed in a group of 11 normal volunteers during moderate steady-state (SS) and rapidly incremented (RI) exercise. The physiologic effects of IR were predominant, increasing inspiratory time, duty cycle, and several measures of ventilatory work. Effects of DS appear related to increased minute ventilation and include increasing flow rates and duty cycle and requiring greater ventilatory work; during RI exercise, the DS effect became relatively smaller at higher exercise levels. ER compressed expiratory time. These results characterize the response to IR, ER, and DS loads and suggest that DS may be relatively less physiologically significant than IR. |
Authors:
|
P Harber; S Shimozaki; T Barrett; P Losides; G Fine |
Related Documents
:
|
6473947 - The effect of sulfur dioxide on the response of rabbits to expiratory loads. 1902457 - Effect of increased inspired co2 on respiratory dead space in ponies. 3147577 - Effects of exercise and co2 inhalation on the breathing pattern in man. 3610917 - Breathing pattern during exercise in young black and caucasian subjects. 21924847 - Exercise, physical activity and healthcare utilization: a review of literature for olde... 8708577 - Design of the oxygen and substrate pathways. vii. different structural limits for oxyge... |
Publication Detail:
|
Type: Journal Article; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
|
Title: American journal of industrial medicine Volume: 16 ISSN: 0271-3586 ISO Abbreviation: Am. J. Ind. Med. Publication Date: 1989 |
Date Detail:
|
Created Date: 1989-09-27 Completed Date: 1989-09-27 Revised Date: 2007-11-14 |
Medline Journal Info:
|
Nlm Unique ID: 8101110 Medline TA: Am J Ind Med Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 189-98 Citation Subset: IM |
Affiliation:
|
Department of Medicine, University of California, Los Angeles 90024. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Airway Resistance* Equipment Design Exercise Humans Protective Devices* Respiratory Dead Space* Respiratory Protective Devices* |
| Grant Support | |
ID/Acronym/Agency:
|
R0I-OH-2005/OH/NIOSH CDC HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Lead exposure among lead-acid battery workers in Jamaica.
Next Document: Predisposing factors in laboratory animal allergy: a study of atopy and environmental factors.