Objective: To examine possible differences in glottal airflow parameters according to oral contraceptive (OC) use. Subjects and Methods: The participants included 16 women, 20–24 years of age. Eight women were taking a triphasic OC; the remaining 8 women were not taking any form of oral contraception (NOC). All participants were recorded on days 7 and 14 of their menstrual cycle. Three repetitions of the sustained vowel /a/ were obtained using a circumferentially vented respiratory face mask connected to a wide-band pressure transducer. Measures of peak flow, minimum flow, alternating flow, fundamental frequency (F₀) and relative sound pressure level were obtained. Results: A multivariate analysis of variance with sound pressure level as a covariate revealed no significant effect of day of recording upon the dependent measures. As a group, the OC women exhibited significantly higher F₀, peak and alternating flow rates compared to the NOC women. Removal of data outliers from the OC women resulted in similar airflow rates for both groups. Conclusion: The findings from this preliminary study did not support the use of glottal airflow measures to distinguish OC women from NOC women. Differences in F₀ findings may reflect hormonally mediated changes in laryngeal tissue and warrant further investigation.

This content is only available via PDF.
Copyright / Drug Dosage / Disclaimer
Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, microcopying, or by any information storage and retrieval system, without permission in writing from the publisher.
Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug.
Disclaimer: The statements, opinions and data contained in this publication are solely those of the individual authors and contributors and not of the publishers and the editor(s). The appearance of advertisements or/and product references in the publication is not a warranty, endorsement, or approval of the products or services advertised or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements.
You do not currently have access to this content.