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CompletedNCT06380023Updated Apr 23, 2024

An Investigation Into the Dispersion Pattern During Coughing and Open Nasopharyngeal Suction Using Various Barrier Devices

An observational study in Airway Aspiration, sponsored by North District Hospital. Completed at 1 site in Hong Kong. Per ClinicalTrials.gov, last updated 2024-04-23.

Sponsored by North District Hospital · Observational

Study type
Observational
Model
Other
Time perspective
Prospective
Enrollment
13
Sex
All
01

Study summary

The aim of the study is to examine the air dispersion pattern and the environmental influence of open airway suction in general ward setting. Secondly, the study is aimed at identifying a simple \& practical enclosure device in general ward. Suction will be performed in manikin in supine lying.

Nasopharyngeal suction will be performed by physiotherapist with working experience more than 1 years. Besides, surgical mask \& enclosure tent will be adopted as the enclosure barrier device in this study.

Research Question

  1. To assess the extent of the environmental contamination during coughing and simulated airway suction
  2. To measure the air particle count during coughing and simulated open airway suction.
  3. To evaluate how effective the enclosure barrier in reducing the air particle dispersion during open airway suction.
02

Conditions studied

  • Airway Aspiration
03

In context

Lead sponsor

North District Hospital is the lead sponsor of 6 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Non-probability sample

Study population

Registered physiotherapist

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • physiotherapists with working experience more than one year

Exclusion criteria

Exclusion Criteria:

  • physiotherapists with working experience less than one year
05

Study design

Observational model
Other
Time perspective
Prospective
Enrollment
13 participants (actual)
Patient registry
No

Groups and cohorts

  • coughing with suction

    Suction performed on manikin in simulated setting

  • coughing with suction covered by surgical mask

    Suction performed on manikin in simulated setting

    Device: Enclosure barrier

  • coughing with suction covered by enclosure tent

    Suction performed on manikin in simulated setting

    Device: Enclosure barrier

Interventions

  • DeviceEnclosure barrier

    Surgical mask \& Enclosure tent compared with open suction

06

What researchers measure

Primary outcomes

  1. Air particle count

    The calibrated sizes are 0.3, 0.5. 1.0, 2.0, 5.0 and 10 microns

    Time frame: one minute

Secondary outcomes

  1. A fluorescent Dye

    The extent and area of the fluorescent dye spreading are measured

    Time frame: one minute

07

Study locations

1 site
  • North District Hospital
    Hong Kong, 000000, Hong Kong
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Sep 2022 to primary completion in Mar 2024, 18 months.

How these figures are worked out, and which studies are left out of them.

Registered
Apr 9, 2024
First posted
Apr 23, 2024
StartActual
Sep 1, 2022
Primary completionActual
Mar 3, 2024
CompletionActual
Mar 3, 2024
Last update
Apr 23, 2024
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Apr 23, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06380023
Lead sponsor
North District Hospital
Collaborators
The Hong Kong Polytechnic University
Responsible party
TO YUK LING (Principal Investigator, North District Hospital) — Principal investigator
First posted
Apr 23, 2024
Start date
Sep 1, 2022
Primary completion
Mar 3, 2024
Completion
Mar 3, 2024
Last update
Apr 23, 2024

Study contacts

Connie TO, Msc
principal investigator · NDH

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Apr 2024. You cannot join it, but the record below documents what was studied.

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Discussion

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