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Self Operating of the Personal WheezoMeter by Intended Users - A Usability Study

This study has been completed.
Information provided by:
KarmelSonix Ltd. Identifier:
First received: May 11, 2009
Last updated: June 23, 2009
Last verified: May 2009

The NAEPP (National Asthma Education and Prevention Program) guidelines recommend that spirometry be performed on patients with asthma because they serve as an objective measure of airway obstruction. Unfortunately, most children under 5 years of age are unable to perform a forced expiratory maneuver making conventional spirometry unavailable in this age group in most venues. Furthermore, other population groups such as retarded people, elderly or physically handicapped share the same difficulty.

Karmel Sonix Ltd has developed the Personal WheezoMeter a hand-held pulmonary sounds analyzer that utilizes contact sensors to acquire, amplify, filter, record and quantify the presence of wheezing. This usability study was designed to test independent home use and device interface effectiveness of the Personal WheezoMeter in order to validate its safe and effective use by intended users.

Condition Intervention
Asthma Device: Personal WheezoMeter

Study Type: Observational
Study Design: Observational Model: Case-Only
Time Perspective: Prospective
Official Title: Self Operating of the Personal WheezoMeter by Intended Users - A Usability Study

Further study details as provided by KarmelSonix Ltd.:

Primary Outcome Measures:
  • Safety will be evaluated by success rate of task performance. [ Time Frame: At the end of the study meeting ]

Secondary Outcome Measures:
  • Number of questions addressed to the investigator required by the participant in order to complete tasks. [ Time Frame: during the study ]
  • User satisfaction will be evaluated by questionnaire that focuses on subjective impressions regarding usability and potential safety problems. [ Time Frame: At the end of the study meeting. ]

Estimated Enrollment: 30
Study Start Date: January 2009
Study Completion Date: April 2009
Primary Completion Date: April 2009 (Final data collection date for primary outcome measure)
Groups/Cohorts Assigned Interventions
Usability study of the Personal Wheezometer
Device: Personal WheezoMeter
pulmonary sounds analyzer


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Male/Female participants ages 18 and up that were either diagnosed as an asthmatic or are parent/guardian of an asthmatic child age under 18 years.

Inclusion Criteria:

  • Male/female age 18 years and up.
  • Subject is diagnosed as an asthmatic, or subject is parent/guardian of an asthmatic child age under 18 years.
  • Subject understands the study procedure.
  • Subject is able to read the User Manual.
  • Signed Informed Consent form
  • Compliance with study requirements.

Exclusion Criteria:

  • Major physical, motor, mental, behavioral, or psychiatric limitations.
  • Concurrent additional major illness.
  • Subject objects to the study protocol.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00901433

RAMBAM Health Care Campus
Haifa, Israel, 31096
Sponsors and Collaborators
KarmelSonix Ltd.
Study Director: Hanna Levy, Dr. KarmelSonix Ltd.
  More Information

Responsible Party: Dr. Hanna Levy - Director of clinical studies, KarmelSonix Ltd Identifier: NCT00901433     History of Changes
Other Study ID Numbers: KSI-PW-US-01
Study First Received: May 11, 2009
Last Updated: June 23, 2009

Keywords provided by KarmelSonix Ltd.:
Wheeze Rate
Respiratory Function Tests processed this record on June 23, 2017