Clinical trial Recruiting at 3 sites Observational Ages 18 to 46 Women only

Impact of e-cigarettes during pregnancy on children's health

Official title: The Impact of E-cigarettes During Pregnancy on Childhood Health Outcomes (ECHO) Study.

Run by University College Dublin · NCT06297005 · Data updated 2026-11-12

This study looks at how using e-cigarettes during pregnancy affects the health of children in their early years.

More Pregnancy Related trials

Quick facts

Study typeObservational
Ages18 Years to 46 Years
SexWomen only
Enrollment1200 (estimated)
SponsorUniversity College Dublin
Academic / other
Locations3 sites (Dublin and 2 other locations)
StatusRecruiting
StartedOctober 9, 2023
Main results expectedAugust 31, 2027
Study endsAugust 31, 2027
Registry record updatedApril 12, 2024
Trial IDNCT06297005 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include pregnant women aged 18 to 46 who smoke, vape, or are dual users, as well as non-smokers willing to participate.

Probably not a fit

Patients who are pregnant with twins or higher order multiples, or those with major congenital abnormalities, may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study investigates the effects of e-cigarette use during pregnancy on the health outcomes of children. It aims to gather data on pregnant women who smoke, vape, or are dual users, and follow their children for two years postnatally. The study will assess various health parameters, including respiratory diseases and developmental issues, to understand the long-term implications of e-cigarette exposure in utero. The research is motivated by the rising popularity of e-cigarettes and the need for more evidence regarding their safety compared to traditional tobacco smoking.

Why it matters

Potential benefit: If successful, this study could provide critical insights into the safety of e-cigarettes during pregnancy and inform guidelines for expectant mothers.

How similar studies have gone: While there is limited data on the long-term effects of e-cigarettes during pregnancy, previous studies have shown significant health risks associated with traditional tobacco smoking, indicating a need for further investigation into e-cigarettes.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Women aged 18 or greater and less than 46 years of age at booking
* Pregnant with a singleton fetus
* Smokers (exhaled CO reading of greater than or equal to 4) or
* Self-reported vaper or
* Dual user (smoker/vaper)
* Non-smokers
* Able to understand and read English.
* Willing to agree to follow-up for the two-year duration of the study in the postnatal period (ie. unlikely to move out of the catchment area).

Exclusion Criteria:

* Women pregnant with twins or higher order multiples
* Late bookers - defined as booking after 24+0 weeks' gestational age
* Fetus or infant diagnosed with a major congenital abnormality (major structural abnormality, ie congenital diaphragmatic hernia (CDH), omphalocele, major cardiac defects ie. which require immediate admission to NICU +/- transfer to cardiology for surgery, chromosomal abnormalities, syndromes - Turner's/Noonan's) or a lethal fetal anomaly
* Any inherited disorder of metabolism or Cystic Fibrosis on Guthrie Card/ neonatal blood spot screening
* History of significant medical disorder in pregnancy e.g. cardiac, haematological, or endocrine disease (including gestational diabetes requiring insulin)
* Significant maternal psychiatric disorder, e.g. delusional or psychotic disorders, severe depression requiring hospitalisation, use of \>1 psychotropic drugs for treatment
* Serious co-morbid addiction issues e.g. opiate abuse, methadone maintenance program
* Severe intellectual disability or lack of capacity

Where it's running

  • Rotunda Hospital
    Dublin, Ireland
    Recruiting
  • National Maternity Hospital, Holles Street
    Dublin, Ireland
    Recruiting
  • Coombe Womens Hospital
    Dublin, Ireland
    Recruiting

Study contacts

  • Principal investigator: Des Cox, MB BCh BAO — University College Dublin
  • Study coordinator: Des W Cox, MB BCh BAO
  • Email: desmond.cox@ucd.ie
  • Phone: +35314282638

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.