HealthyNCT01410877
Assessment of Inspiratory Profiles Through Airflow Resistances Designed to Mimic Inhalers
An observational study of Healthy, run by Virginia Commonwealth University at 1 site in United States.
Trial summary
It is hypothesized that different inhalation profiles (inhalation flow rate versus time curves) result from different forms of patient training. Furthermore, significant inter-subject variability in these profiles should exist that can, under some circumstances, depend on the design of different inhalation devices… Read more about this study
- Who is it for?
- Ages 18 to 65 yearsHealthy volunteers can take part
- Conditions the study is for
- Healthy
- How many people
- 20 participants
- Where
- 1 siteUnited States
- Study dates
- Aug 2011to Sep 2011
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 65 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Study population: Greater Richmond Area, Virginia
- Must be healthy as determined by a health questionnaire
- Must not be currently pregnant (self reported)
- Must not have symptoms of an obstructive or restrictive lung disease or be suffering from allergies or congestion at the time of testing
- Must have Forced 'Expiratory Volume in one second' >'Lower Limit of Normal' predicted
- Must be medically stable with no evidence of acute medical or psychiatric illness,
- Must have never used or been trained to use a dry powder inhaler,
- Must not be currently using any inhaler, nasal spray or drug known to affect lung function, Bronchodilators and decongestants in any form are excluded
- Must be at least 4 feet 10 inch tall,
- Must weigh at least 110 pounds (50 kilograms) and be no more than 264 pounds (120 kilograms)
- Must not currently, or in the past year, have used tobacco products
Trial locations and contacts
1 site in 1 country.
United States1 site
Virginia Commonwealth University, School of Pharmacy
Richmond, Virginia, 23298
About this study
It is hypothesized that different inhalation profiles (inhalation flow rate versus time curves) result from different forms of patient training. Furthermore, significant inter-subject variability in these profiles should exist that can, under some circumstances, depend on the design of different inhalation devices; this is because dry powder inhalers have different airflow resistances. The investigators also hypothesize that the spread of flow rate versus time profiles for inhalation can be collected. Finally, these profiles can be analyzed from a group of human subjects and used to define a mean and statistical range of inhalation flow rate versus time curves.
The investigators propose to collect the inhalation profiles from 20 'inhaler naïve' healthy volunteers after they have (a) read a typical inhaler package insert and (b) been formally trained in inhaler use by a pharmacist. No drug exposure will occur. The data will be used from this pilot study to (a) show the inter-subject variability in the inhalation profiles used by adults inhaling through realistic airflow resistances (like those in inhalers) following different types of training (b) show how formal training changes inhalation technique and (c) provide a database of typical inspiratory profiles for use and improvement of realistic tests of inhalers in the laboratory. Since pulmonary deposition from inhalers greatly depends upon the way patients inhale through them, this research will result in a database to improve the design and in vitro characterization of inhalers.
- Conditions
- Healthy
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| Inhaler naive healthy volunteers | Not described |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in inhalation flow rate and inhalation volume after the formal training in use of inhaler
Inhalation Profiles will be collected through different airflow resistance, before and after formal training
Measured: 1 year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted5 Aug 2011 (estimated)
- Study startAug 2011
- Primary completionSep 2011
- Study completionSep 2011
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for HealthyStudies of the same condition, open and under way.
- More trials run by Virginia Commonwealth UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Time perspective
- Cross-sectional
- Enrolment
- 20 participants (actual)
Sponsor and investigators
- Lead sponsor
- Virginia Commonwealth University
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Peter R Byron, PhD, Principal investigator, Virginia Commonwealth University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01410877
- Sponsor's protocol ID
- HM13708
- Status last verified
- Jun 2013
- First submitted
- 1 Aug 2011
- Last updated
- 5 Jun 2013
- Results posted
- No
- Data monitoring committee
- Yes
Study at a glance
From the registry record, last updated by the sponsor on 5 Jun 2013. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Assessment of Inspiratory Profiles Through Airflow Resistances Designed to Mimic Inhalers
- ClinicalTrials.gov ID
- NCT01410877
- Acronym / sponsor ID
- HM13708
- Conditions
- Healthy
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 20 participants (actual)
- Lead sponsor
- Virginia Commonwealth UniversityUniversity, hospital or other
- Study start
- Aug 2011
- Primary completion
- Sep 2011 (actual)
- Study completion
- Sep 2011 (actual)
- First posted
- 5 Aug 2011 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
It is hypothesized that different inhalation profiles (inhalation flow rate versus time curves) result from different forms of patient training. Furthermore, significant inter-subject variability in these profiles should exist that can, under some circumstances, depend on the design of different inhalation devices; this is because dry powder inhalers have different airflow resistances. The investigators also hypothesize that the spread of flow rate versus time profiles for inhalation can be collected. Finally, these profiles can be analyzed from a group of human subjects and used to define a mean and statistical range of inhalation flow rate versus time curves.
The investigators propose to collect the inhalation profiles from 20 'inhaler naïve' healthy volunteers after they have (a) read a typical inhaler package insert and (b) been formally trained in inhaler use by a pharmacist. No drug exposure will occur. The data will be used from this pilot study to (a) show the inter-subject variability in the inhalation profiles used by adults inhaling through realistic airflow resistances (like those in inhalers) following different types of training (b) show how formal training changes inhalation technique and (c) provide a database of typical inspiratory profiles for use and improvement of realistic tests of inhalers in the laboratory. Since pulmonary deposition from inhalers greatly depends upon the way patients inhale through them, this research will result in a database to improve the design and in vitro characterization of inhalers.
Study design
- Time perspective
- Cross-sectional
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Inhaler naive healthy volunteers | – | – |
Who may qualify
- Ages
- 18 to 65 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
- Study population
- Greater Richmond Area, Virginia
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Change in inhalation flow rate and inhalation volume after the formal training in use of inhaler
Time frame: 1 year
Inhalation Profiles will be collected through different airflow resistance, before and after formal training
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 5 Jun 2013.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Peter R Byron, PhD principal investigator
Virginia Commonwealth University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Healthy, run by Virginia Commonwealth University at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 5 Jun 2013. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Change in inhalation flow rate and inhalation volume after the formal training in use of inhaler (time frame: 1 year). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 5 Jun 2013.