September 27, 2017

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Ushang Desai Article Published in Occupational Diseases and Environmental Medicine Journal

Ushang Desai (Florida) co-authored an article entitled "Evaluation of Spirometry for Medical Clearance in Occupations Requiring Respirator Usage" published in the in Occupational Diseases and Environmental Medicine Journal in Volume 5, Number 3 in August 2017.

His co-authors were Giffe T. Johnson, James D. McCluskey, and Raymond D. Harbison.

Occupational Diseases and Environmental Medicine (ODEM) is an open access journal. The goal of this journal is to provide a platform for researchers and practitioners all over the world to promote, share, and discuss various new issues and developments in all areas of Occupational Diseases and Environmental Medicine.

Scientific Research Publishing (SCIRP) is one of the largest Open Access journal publishers. It is currently publishing more than 200 open access, online, peer-reviewed journals covering a wide range of academic disciplines. SCIRP serves the worldwide academic communities and contributes to the progress and application of science with its publication. More than 5000 professional editorial board members support our publishing activities, and 51569 articles have already been published with SCIRP (2015-12-31).


Medical certification of workers for respirator use is an important activity of occupational medicine health professionals. Spirometry is a diagnostic tool to evaluate respiratory distress/insufficiency that may affect respirator use. The pulmonary function data of 337 subjects from different occupations that required medical evaluation to wear a respirator were analyzed to determine the effect of using various spirometric equations on respirator fitness outcomes. Of 337 subjects who were cleared for respiratory use by medical questionnaires for respirator compliance, 14 (4.15%) failed to pass respirator compliance by NFPA criteria and 5 (1.48%) failed to pass respirator compliance measures by ATS criteria. We compared the use of different spirometric equations to evaluate these measures, and it was determined that the Crapo equation cleared more workers for respirator use as compared to the Knudson and NHANES III equations. As some workers were able to qualify for respirator use based on questionnaire alone but failed respirator clearance after pulmonary function testing, it is recommended that spirometry is used to evaluate clearance for all workers who will use a respirator in the workplace. As well, using different spirometric equations can affect the outcome on passing or failing clearance for respirator use, and this should be considered in a respiratory medical certification program.

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