NCT06392984

Ultrasonographic Measurement of Diaphragmatic Thickness in Adolescents With Pectus Deformity

Ultrasonographic Measurement of Diaphragmatic Thickness in Adolescents With Pectus Deformity: Is it an Early Predictor of Respiratory Dysfunction?

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 61 (actual)
• Sponsor: Gaziosmanpasa Research and Education Hospital · Other Government
• Sex: All
• Age: 6 Years – 18 Years
• Healthy volunteers: —

Summary

Pectus deformities are among the most common anterior chest wall pathologies. Pectus excavatum is the most common chest deformity with an incidence of 0.1-0.3%. In severe deformities, a decrease in lung volume is observed. This can cause decreased pulmonary function and affect the function of the right ventricle. The diaphragm is the main respiratory muscle, and diaphragm contraction is associated with respiratory functions. So, investigators aimed to measure diaphragmatic thickness in adolescents with pectus deformity and to show whether diaphragmatic thickness is an early predictor of respiratory disorder in participants who do not show any clinical symptoms or whose respiratory functions are normal.

Detailed description

Pectus deformities are among the most common anterior chest wall pathologies. Pectus excavatum is the most common chest deformity with an incidence of 0.1-0.3%. It is more common in boys than girls at a ratio of 4:1. This deformity involves the lower part of the body of the sternum; The chest wall has shifted posteriorly. Pectus excavatum is a cosmetic defect that in most cases does not have physiological consequences. In severe deformities, a decrease in lung volume is observed. This can cause decreased pulmonary function and affect the function of the right ventricle. Funnel chest defects can cause chest pain, shortness of breath, decreased cardiac output, and decreased exercise capacity, depending on the depth of the deformity. The alignment of the skeletal system in the chest and its harmony with the compliance of the chest wall are related to respiratory function; changes in the rib cage lead to a decrease in lung capacity. The diaphragm is the main respiratory muscle, and diaphragm contraction is associated with respiratory functions. In recent years, ultrasonography (USG) has gained increasing utility for visualizing the diaphragm and assessing its function, with several advantages. Based on this, investigators aimed to measure diaphragmatic thickness in adolescents with pectus deformity and to show whether diaphragmatic thickness is an early predictor of respiratory disorder in participants who do not show any clinical symptoms or whose respiratory functions are normal.

Conditions

• Pectus Deformity
• Pectus Excavatum
• Pectus Carinatum
• Pectus Abnormalities

Interventions

Type	Name	Description
DIAGNOSTIC_TEST	Pectus deformity study form	Pectus deformity study form consisting of clinical and radiological measurements of participants aged 6-18 years who applied to the outpatient clinic with chest deformity will be filled in detail.
DIAGNOSTIC_TEST	Pulmonary function test	Pulmonary function tests (PFTs) are noninvasive tests that show how well the lungs are working. The tests measure lung volume, capacity, rates of flow, and gas exchange. This information can help your healthcare provider diagnose and decide the treatment of certain lung disorders. Investigators will use handheld spirometry device for measurement. Three measurements will be made. In these three measurements; FEV1(Forced Expiratory Volume In One Second) (Liter-L), FEV1 (%predicted), FVC (Forced Vital Capacity) (Liter-L), FVC (%predicted), FEV1/FVC (%) and FEV1/FVC (%predicted) will be evaluated. The arithmetic average of the results of these three measurements will be taken.
DIAGNOSTIC_TEST	Ultrasonographic Diaphragm Thickness Measurement	Diaphragm thickness (millimeter-mm) will be measured in the supine position with a 6-14 Mhz lineer, conventional ultrasound probe (Mindray DC-8, Shenzen Mindray Bio-Medical Electronics CO. LTD.,P.R. China) at the end of inspiration and expiration from the intercostal space on the anterior axillary line. The measurements will be evaluated by making three measurements from the right 8-9. intercostal space where the diaphragm is best visualized. End-expiratory (Forced residual capacity-FRC) (millimeter-mm), end-inspiratory (Total Lung Capacity-TLC) (millimeter-mm)) and thickening rate (%) (thickness TLC / thickness FRC) will be evaluated three times and the arithmetic average of these three measurements will be taken.

Timeline

• Start date: 2023-10-01
• Primary completion: 2024-05-27
• Completion: 2024-05-27
• First posted: 2024-05-01
• Last updated: 2026-01-08

Locations

1 site across 1 country: Turkey (Türkiye)