Respirator effects during real-life activity: multidimensional methodology.
Harber-P; Santiago-S; Liu-D; Sies-M; Boomus-C
Am J Respir Crit Care Med 2007 Apr; 175(Abstracts):A171
BACKGROUND: Faced with terrorism or respiratory epidemics (or threat thereof), respirators may be widely used by community members in nonoccupational settings. Many may have mild pre-existing or post exposure impairment Most respirator research studies were based upon heavy exertion in healthy subjects typical of occupational settings. PURPOSE: To study respirator effects in persons with mild impairment during a variety of real life work activities. METHODS: We developed a multifaceted approach: (I) Multidimensional 16 point Borg scales (major domains include exertion, mask comfort, sensory impact, thermal comfort, work productivity); (2) Work productivity measurements during work activities [including sedentary and moderate exertIon]; (3) videorecording and scoring of proper respirator placement throughout work; (4) Physiologic parameters using unobtrusive respiratory inductive plethysmography (Vivologic Wifi system). RESULTS: Preliminary results demonstrate: (1) Although N95 devices produce less physiologic response than half mask respirators, subjective Impacts may be greater for some domians. (2) Exertion level affects magnitude and domains of subjective response. (3) Respiratory parameters may be effectively measured unobtrusively during a variety of work tasks. IMPLICATIONS: Study of respirator effects in the general population optimally employs multidimensional measurement technlques, including impact upon productivity as well as subjective and physiologic parameters. Such studies may inform the public policy decision about shelter in place continue work with respirators.
Face-masks; Personal-protection; Personal-protective-equipment; Physical-stress; Protective-equipment; Protective-measures; Quantitative-analysis; Respirators; Respiratory-equipment; Respiratory-protective-equipment; Risk-analysis; Statistical-analysis; Task-performance
American Journal of Respiratory and Critical Care Medicine
University of California, Los Angeles