Bronchopulmonary DysplasiaMicroplasticsNCT07848646
Preliminary Study on Microplastics Deposition in Ventilator Circuit and the Risk of Bronchopulmonary Dysplasia in Premature Infants
An observational study of Bronchopulmonary Dysplasia, run by Huiyi Li.
Trial summary
In this study, the premature infants with gestational age less than 30 weeks were taken as the object, and the deposition characteristics of microplastics in ventilator circuit and its correlation with the risk of bronchopulmonary dysplasia were systematically discussed through prospective observation design. Read more about this study
- Who is it for?
- Ages 1 minute to 1 monthHealthy volunteers can take part
- Conditions the study is for
- Bronchopulmonary Dysplasia
- How many people
- 100 participants
- Where
- No sites listed yet
- Study dates
- 1 Oct 2026to 30 Oct 2027
- How long will I take part?
- 1 Month
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
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 1 minute to 1 month
- All sexes
- Healthy volunteers accepted
- Child
Study population: Neonates with invasive mechanical ventilation
Inclusion criteria：Neonates with invasive mechanical ventilation Exclusion criteria：1、Children who died of genetic metabolism and congenital heart disease 2、Family members refused to carry out the experiment.
About this study
In this study, the premature infants with gestational age less than 30 weeks were taken as the object, and the deposition characteristics of microplastics in ventilator circuit and its correlation with the risk of bronchopulmonary dysplasia were systematically discussed through prospective observation design. The research is divided into two parts: firstly, the release and deposition of microplastics in the ventilator circuit (water storage tank and simulated lung) are detected; Secondly, the changes of microplastics load in airway secretions of children with bronchopulmonary dysplasia on the 0-7th day, 14th day and 28th day were dynamically monitored, and samples of bottle milk and newborn blood were collected simultaneously to evaluate the exposure level of multi-channel microplastics. Microplastics was qualitatively and quantitatively analyzed by confocal micro-Raman spectroscopy, and the dose-response relationship between microplastics load and bronchopulmonary dysplasia was analyzed in combination with clinical data, so as to provide scientific basis for risk prevention and control of iatrogenic microplastics exposure in neonatal intensive care unit. In this study, the blood sample only used the remaining venous blood collected by routine clinical diagnosis and treatment (such as blood routine and blood gas analysis) on the 7th, 14th and 28th day (2 days) after the newborn was admitted to the hospital, and the dosage was 0.5-1 mL, which was placed in a glass anticoagulant tube. Each child is collected at most once. If there is no clinical blood collection at this time point, no additional puncture blood collection will be carried out to ensure that the operating burden and risk of children will not be increased.
Read the detailed description
Objective To investigate the relationship between microplastics deposition in ventilator circuit and bronchopulmonary dysplasia (BPD) in premature infants, and to evaluate the risk of iatrogenic microplastics exposure in NICU.
Methods A prospective observational cohort study was conducted. Premature infants with gestational age less than 30 weeks who needed mechanical ventilation were divided into groups according to whether BPD occurred or not. Samples of condensate water, simulated lung lavage fluid, airway secretions, blood and milk were collected, and microplastics characteristics were detected by acid digestion, vacuum filtration and confocal micro Raman spectrometer. Clinical data were collected and analyzed by multivariate statistics.
Hypothesis: It is expected that microplastics such as polyethylene and polypropylene can be detected in the ventilator circuit. Microplastics load of airway secretion in BPD group increased significantly, which was positively correlated with ventilation duration and showed an increasing trend with the course of disease. Inhalation is the main exposure route, and airway microplastics load may be an independent risk factor for BPD.
This study provides a basis for the safety assessment and clinical prevention and control of medical equipment and materials in NICU.
- Conditions
- Bronchopulmonary Dysplasia
- Keywords
- Premature baby; Microplastics; Ventilator circuit; Bronchopulmonary dysplasia
- Medical subject headings
- Bronchopulmonary Dysplasia, Premature Birth
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 |
|---|---|---|
| BPD group | Not described | |
| Non-BPD group | Not described |
What is being measured
The primary outcome is the main question the study is designed to answer.
Microplastics deposition of airway secretions.
Measure the average particle size, quantity and type of microplastics.
Measured: up to 4 weeks
Secondary outcomes (1)
Incidence of bronchopulmonary dysplasia
incidence rate
Measured: 1 month
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted30 Sep 2026
- Study start1 Oct 2026 (estimated)
- Primary completion30 Oct 2027 (estimated)
- Study completion30 Oct 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Bronchopulmonary DysplasiaStudies of the same condition, open and under way.
- 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
- Observational model
- Case-control
- Time perspective
- Prospective
- Enrolment
- 100 participants (estimated)
- Target duration
- 1 Month
Sponsor and investigators
- Lead sponsor
- Huiyi Li
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor-investigator, Huiyi Li, Guangdong Second Provincial General Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07848646
- Sponsor's protocol ID
- 2026-KY-KZ-146-02
- Acronym
- Microplastics
- Status last verified
- Sep 2026
- First submitted
- 14 Sep 2026
- Last updated
- 30 Sep 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 30 Sep 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Preliminary Study on Microplastics Deposition in Ventilator Circuit and the Risk of Bronchopulmonary Dysplasia in Premature Infants
- ClinicalTrials.gov ID
- NCT07848646
- Acronym / sponsor ID
- Microplastics / 2026-KY-KZ-146-02
- Conditions
- Bronchopulmonary Dysplasia
- Keywords
- Premature baby; Microplastics; Ventilator circuit; Bronchopulmonary dysplasia
- Study type
- Observational
- Recruitment status
- Not yet recruiting
- Enrolment
- 100 participants (estimated)
- Lead sponsor
- Huiyi LiUniversity, hospital or other
- Study start
- 1 Oct 2026 (estimated)
- Primary completion
- 30 Oct 2027 (estimated)
- Study completion
- 30 Oct 2027 (estimated)
- First posted
- 30 Sep 2026 (actual)
- 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.
In this study, the premature infants with gestational age less than 30 weeks were taken as the object, and the deposition characteristics of microplastics in ventilator circuit and its correlation with the risk of bronchopulmonary dysplasia were systematically discussed through prospective observation design. The research is divided into two parts: firstly, the release and deposition of microplastics in the ventilator circuit (water storage tank and simulated lung) are detected; Secondly, the changes of microplastics load in airway secretions of children with bronchopulmonary dysplasia on the 0-7th day, 14th day and 28th day were dynamically monitored, and samples of bottle milk and newborn blood were collected simultaneously to evaluate the exposure level of multi-channel microplastics. Microplastics was qualitatively and quantitatively analyzed by confocal micro-Raman spectroscopy, and the dose-response relationship between microplastics load and bronchopulmonary dysplasia was analyzed in combination with clinical data, so as to provide scientific basis for risk prevention and control of iatrogenic microplastics exposure in neonatal intensive care unit. In this study, the blood sample only used the remaining venous blood collected by routine clinical diagnosis and treatment (such as blood routine and blood gas analysis) on the 7th, 14th and 28th day (2 days) after the newborn was admitted to the hospital, and the dosage was 0.5-1 mL, which was placed in a glass anticoagulant tube. Each child is collected at most once. If there is no clinical blood collection at this time point, no additional puncture blood collection will be carried out to ensure that the operating burden and risk of children will not be increased.
Detailed description
Objective To investigate the relationship between microplastics deposition in ventilator circuit and bronchopulmonary dysplasia (BPD) in premature infants, and to evaluate the risk of iatrogenic microplastics exposure in NICU.
Methods A prospective observational cohort study was conducted. Premature infants with gestational age less than 30 weeks who needed mechanical ventilation were divided into groups according to whether BPD occurred or not. Samples of condensate water, simulated lung lavage fluid, airway secretions, blood and milk were collected, and microplastics characteristics were detected by acid digestion, vacuum filtration and confocal micro Raman spectrometer. Clinical data were collected and analyzed by multivariate statistics.
Hypothesis: It is expected that microplastics such as polyethylene and polypropylene can be detected in the ventilator circuit. Microplastics load of airway secretion in BPD group increased significantly, which was positively correlated with ventilation duration and showed an increasing trend with the course of disease. Inhalation is the main exposure route, and airway microplastics load may be an independent risk factor for BPD.
This study provides a basis for the safety assessment and clinical prevention and control of medical equipment and materials in NICU.
Study design
- Observational model
- Case-control
- Time perspective
- Prospective
- Target follow-up
- 1 Month
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| BPD group | – | – |
| Non-BPD group | – | – |
Who may qualify
- Ages
- 1 minute to 1 month
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child
- Study population
- Neonates with invasive mechanical ventilation
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
Microplastics deposition of airway secretions.
Time frame: up to 4 weeks
Measure the average particle size, quantity and type of microplastics.
1 secondary outcome
Incidence of bronchopulmonary dysplasia
Time frame: 1 month
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 30 Sep 2026.
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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.
The record lists no contact. Use the official record to reach the sponsor.
Questions about this trial
What is this clinical trial studying?
An observational study of Bronchopulmonary Dysplasia, run by Huiyi Li.
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: opening soon, as of the sponsor's last update on 30 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.
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?
This study is still under way. Results are not available in the source record yet.
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?
Microplastics deposition of airway secretions. (time frame: up to 4 weeks). 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 30 Sep 2026.