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The hypothesis of the study is that laryngeal US can accurately and reliably diagnose laryngomalacia in infants with congenital stridor.
Stridor is a respiratory noise caused by partial obstruction of the large airways at the level of the pharynx, larynx and/or trachea. The most prevalent congenital cause of stridor is laryngomalacia. Flexible laryngobronchoscopy (FLB) under sedation is regarded as the gold standard. However, FLB under sedation has some drawbacks as it requires venous access, use of sedative agents, may cause discomfort for the patient and is costly.
Ultrasound (US) is a noninvasive, painless, radiation free, well tolerated imaging technique. It allows for dynamic assessment of moving structures in an awake patient and the results can be easily displayed and recorded.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| laryngeal ultrasound stridor | Experimental | During the study period, infants referred for FLB and bronchoscopy due to congenital stridor at the Department of Pediatric Pulmonology, Critical Care and Sleep Medicine at the Tel Aviv Sourasky Medical Centre will undergo an awake US of the larynx prior to performing the Flexible bronchoscopy. |
|
| laryngeal ultrasound -control | Other | Infants matched for age referred for flexible bronchoscopy for reasons other than stridor will undergo an awake US of the larynx. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| laryngeal ultrasound | Other |
|
| Measure | Description | Time Frame |
|---|---|---|
| The yield of US in diagnosing laryngomalacia in comparison to FLB. | December 2013- January 2015 (13 months) |
| Measure | Description | Time Frame |
|---|---|---|
| The yield of US in diagnosing other causes of congenital stridor compared to FLB. | December 2013- January 2015 (13 months) |
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Inclusion Criteria:
Infants referred for FLB and bronchoscopy due to congenital stridor at the Department of Pediatric Pulmonology, Critical Care and Sleep Medicine at the Tel Aviv Sourasky Medical Centre
Exclusion Criteria:
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| ID | Term |
|---|---|
| D012135 | Respiratory Sounds |
| D055092 | Laryngomalacia |
| ID | Term |
|---|---|
| D012818 | Signs and Symptoms, Respiratory |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D002357 | Cartilage Diseases |
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| D009140 | Musculoskeletal Diseases |
| D007818 | Laryngeal Diseases |
| D012140 | Respiratory Tract Diseases |
| D010038 | Otorhinolaryngologic Diseases |
| D009139 | Musculoskeletal Abnormalities |
| D000013 | Congenital Abnormalities |
| D009358 | Congenital, Hereditary, and Neonatal Diseases and Abnormalities |
| D003240 | Connective Tissue Diseases |
| D017437 | Skin and Connective Tissue Diseases |