Skip to main content
OpenTrials
Not Yet Recruiting

NCT Number: NCT07370051

Effect of Topical Oxygen and LED Light Therapy on Nipple Crack

The World Health Organization and UNICEF define the protection and support of breastfeeding as one of the key determinants of maternal and newborn health. Nipple cracks are common in the postpartum period and cause breastfeeding problems. If not addressed early, they can lead to interrupted or complete cessation of breastfeeding. It is important to develop methods for effective, safe, and mother-friendly care of nipple cracks. Various care approaches, such as lanolin, natural products, and hydrogels, have been described in the literature. However, evidence for non-invasive agents that support wound healing at the cellular level is limited. Evidence for LED light application is limited, and there is no evidence regarding the effect of topical oxygen application on nipple cracks.

This project is designed as a randomized controlled trial to investigate the effect of topical oxygen and LED light therapy applied to nipple cracks on wound healing, pain, and breastfeeding success. The study will be conducted at the Lactation Unit of Istanbul Haseki Training and Research Hospital, Ministry of Health, between March and December 2026. The sample size was calculated using the G*Power program; with an effect size of 0.20, a significance level of 5%, and a power of 80%, a total of 51 mothers will be included in the study. Participants will be divided into three groups using the block randomization method: Topical Oxygen (n=17), LED Light Therapy (n=17), and Control (n=17). Standard breastfeeding counseling will be provided to all groups. In addition to the intervention groups, topical oxygen will be applied at a flow rate of 10 liters per minute for 20 minutes; LED light therapy will be applied at 630 nm red and 850 nm infrared wavelengths, at an energy dose of 15.3 J/cm², for 5 minutes. Interventions will be performed on days 0, 3, and 7. Data will be collected using a personal information form, wound size measurement, Nipple Trauma Score, Visual Analog Scale, and LATCH score. The validity and reliability of the Nipple Trauma Score in Turkish will be assessed within the scope of the project.

To reduce measurement and analysis bias, support will be obtained from an independent observer and a statistician.

Not Yet Recruiting

Trial opening soon.

Get Notified

Key information

Conditions

Breastfeeding Behavior Breast Breast Feeding Feeding Behavior Midwifery Newborn Infant

Age range

18 year–40 year

Sex eligibility

Female

Study type

Interventional

Phase

Not applicable

Primary location

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Individuals aged 18-40,
  • Those who gave birth at term (37-42 weeks),
  • Those whose baby was 0-28 days old at the first visit,
  • Those diagnosed with nipple fissures,
  • Breastfeeding their baby,
  • Those who have had a single birth,
  • Those without a diagnosis of psychiatric illness and who are not taking related medication.

Exclusion criteria

  • Those with infection, mastitis, abscess, etc. accompanying nipple injury,
  • Those who have started medical treatment for nipple injury,
  • Those who are unable to continue breastfeeding,
  • Those who feed their baby by expressing breast milk,
  • Those who show any adverse reaction to photosensitivity or exposure to sunlight.

Treatment and study plan

Topical oxygen therapy

Procedure

Topical oxygen will be applied directly to the nipple crack using an oxygen mask. The oxygen mask will be washed and dried before and after use. The mask, which is specific to the individual, will be stored in a transparent, sealed plastic bag until it is reused.

In the literature, free-flow oxygen applications are frequently administered at a rate of 5-15 liters/min for 10-180 minutes.

The size of the nipple fissure is smaller than most wound types reported in the literature. Therefore, considering the wound size and the need to avoid long application times that would compromise maternal comfort, the therapeutic dose was adjusted accordingly. In line with this, after consulting a surgical specialist, it was planned to administer one session at a flow rate of 10 liters per minute for 20 minutes. The determined application parameters will be tested in a pilot study.

LED light therapy

Device

An LED light device based on the photobiomodulation principle, commonly used in clinical dermatology applications, will be used in LED light therapy. The LED light will be applied directly to the nipple crack. The device is recommended to be used at a distance of 3 inches (~8 cm). The application time was determined by calculating the formulation used in similar studies in the literature: Time (sec) = Energy dose (J/cm²) ÷ Light intensity (W/cm²). Thus, the ideal duration for the device to be used was determined to be 300 seconds (5 minutes), as 15.3 J/cm² ÷ 0.051 W/cm². LED light will only be applied to Group B and a total of three times (day 0, day 3, day 7).

Primary outcomes

  1. Nipple Trauma Severity

    Time frame: Day 1 (pre- and post-intervention), Day 3 (post-intervention), and Day 7 (post-intervention)

    Nipple trauma severity will be assessed using the Nipple Trauma Score (NTS), which evaluates breastfeeding-related nipple tissue damage based on objective observational criteria. The scale categorizes nipple changes into six severity levels scored from 0 to 5, with higher scores indicating more severe nipple trauma. The Turkish version of the scale will be developed and used in this study.

  2. Nipple Pain Intensity

    Time frame: Day 1 (pre- and post-intervention), Day 3 (post-intervention), and Day 7 (post-intervention)

    Nipple pain intensity will be measured using the Visual Analog Scale (VAS), a 10-cm subjective pain scale ranging from 0 (no pain) to 10 (unbearable pain). Participants will indicate the intensity of pain related to nipple trauma by marking the scale, with higher scores reflecting greater pain severity.

Secondary outcomes

  1. Breastfeeding Effectiveness (LATCH Score)

    Time frame: Day 1 (pre- and post-intervention), Day 3 (pre-intervention), and Day 7 (pre-intervention)

    Breastfeeding effectiveness will be evaluated using the LATCH Breastfeeding Assessment Tool, which assesses latch, audible swallowing, nipple type, maternal comfort, and need for assistance. Each component is scored from 0 to 2, yielding a total score range of 0 to 10, with higher scores indicating more effective breastfeeding.

  2. Infant Weight Change

    Time frame: Day 1 (pre-intervention), Day 3 (pre-intervention), and Day 7 (pre-intervention)

    Infant weight will be measured using a calibrated digital infant scale to assess changes in body weight over time. Weight measurements will be recorded in grams, and changes in infant weight will be used as an indicator of early feeding adequacy.

Study contacts

Contact information is provided by the study sponsor or research team.

Elif DOGAN

CONTACT

[email protected]

+90 539 601 15 88

Sponsors and collaborators

Lead sponsor

Istanbul University - Cerrahpasa

Other

Registry information

Official study title

Effect of Topical Oxygen and LED Light Therapy on Nipple Crack: A Randomized Controlled Trial

Important dates

Study start
2026
Primary completion
2027
Study completion
2027
First posted
Jan 27, 2026
Registry last updated
May 27, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Related clinical trials

Published trials that share one or more normalized conditions with this study.