Diaphragm Ultrasound İn Children With OSAS
Key facts
- Who runs it
- Istanbul University
- Where
- Istanbul, TürkiyeSee the site
- Trial code
- Status
- Recruiting
- People taking part
- 60 people, planned
- Started
- 1 Sept 2025
- Planned end
- 30 Aug 2026
- Type of study
- Observational, 2 groups
- Record updated
- 2 February 2026
Who can take part
- Age
- 1 year to 12 years
- Sex
- Women and men
- Healthy volunteers
- Can take part
The registry criteria, word for word
Show all 12 criteriaShow less
Who can take part
- ASA physical status I-II
- Children aged 1 to 12 years
- Scheduled to undergo elective surgery under general anesthesia
- Written informed consent obtained from parents or legal guardians
- Availability of a completed pediatric sleep questionnaire (PSQ)
Who cannot take part
- Use of medications that may affect neuromuscular function
- Presence of a neuromuscular disease
- Refusal to participate in the study or failure to provide informed consent
- Patients younger than 1 year or older than 12 years
- Diaphragmatic paralysis
- ASA physical status III-IV
- Body mass index (BMI) > 35 kg/m²
Check if you might fit
Answer for yourself. This is not a decision: only the study team can say whether you can take part.
- Are you between 1 and 12 years old?
Where in Türkiye
- Istanbul University, Department of AnesthesiologyIstanbul, TürkiyeContact: Furkan Kelebek, ResidentTaking people
About the trial
What the trial wants to find out
This is a prospective observational study evaluating perioperative diaphragmatic function by ultrasonography in children aged 1-12 years undergoing elective surgery under general anesthesia.
Read full original descriptionShow less
Participants will be classified preoperatively based on the parent-completed Pediatric Sleep Questionnaire (PSQ). Children with suspected obstructive sleep apnea syndrome who are scheduled for adenotonsillectomy will form the study group, while children without clinical findings suggestive of obstructive sleep apnea who are scheduled for elective non-airway-related otolaryngologic surgeries will serve as controls.
Diaphragm ultrasound assessments will be performed before and after surgery in the supine position during spontaneous breathing. Measurements will include diaphragmatic thickness at end-inspiration and end-expiration, diaphragmatic thickening fraction, and diaphragmatic excursion during quiet and deep breathing.
The primary objective is to compare diaphragmatic excursion and thickening fraction between groups. Secondary objectives include evaluating the association between perioperative respiratory parameters, postoperative recovery, and diaphragm ultrasound measures.
The 2 groups in the trial
- Obstructive Sleep Apnea Group
Children with obstructive sleep apnea syndrome, defined by at least 8 "yes" responses out of 22 items on the Pediatric Sleep Questionnaire (PSQ), scheduled for adenotonsillectomy under general anesthesia.
- Control Group
Children without obstructive sleep apnea, defined by fewer than 8 "yes" responses out of 22 items on the Pediatric Sleep Questionnaire (PSQ), scheduled for elective non-airway-related otolaryngologic surgeries under general anesthesia.
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Contact the study team: see the registry record → Contacts and Locations
Print a page for my doctorData and sources
- Registry record
- Listed on ClinicalTrials.gov.
- Official title
- Perioperative Ultrasonographic Assessment Of Diaphragmatic Function İn Pediatric Obstructive Sleep Apnea
- Fit questions
- Built from NCT07380321, who can take part
- Record updated
- 2 February 2026