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Published on: June 6, 2020
Childhood Respiratory Conditions: Stridor
1Division of Otolaryngology in the Department of Pediatrics at University of Arizona College of Medicine, 1501 N. Campbell Ave, Tucson, AZ 85724.
Insights
Differentiating acute from chronic stridor in children is key. Acute stridor is often croup, while chronic stridor is commonly laryngomalacia, requiring specific diagnoses and management strategies.
Area of Science:
- Pediatrics
- Otolaryngology
- Respiratory Medicine
Background:
- Stridor in infants and children presents a diagnostic challenge, primarily distinguishing between acute and chronic etiologies.
- Prompt identification is crucial for appropriate management and patient outcomes.
Purpose of the Study:
- To outline the diagnostic approaches and management strategies for acute and chronic stridor in pediatric populations.
- To differentiate common causes of acute stridor (e.g., croup) from chronic stridor (e.g., laryngomalacia).
Main Methods:
- Clinical presentation analysis of acute stridor, focusing on characteristic signs of croup versus other emergent conditions.
- Review of common causes of chronic stridor, including laryngomalacia and its typical onset and progression.
- Discussion of diagnostic considerations for atypical presentations and severe cases requiring specialist consultation.
Main Results:
- Acute stridor is frequently viral croup, diagnosed by inspiratory stridor, barking cough, and hoarse cry; steroids are a primary treatment.
- Severe croup necessitates urgent care or emergency department evaluation, potentially requiring hospitalization.
- Chronic stridor is most often laryngomalacia, presenting in early infancy with positional symptoms; most cases resolve spontaneously.
- Severe laryngomalacia or diagnostic uncertainty may warrant otolaryngology consultation, with potential interventions including reflux pharmacotherapy or supraglottoplasty.
Conclusions:
- Accurate differentiation between acute and chronic stridor is essential for effective pediatric respiratory care.
- Management varies significantly, from supportive care and steroids for croup to watchful waiting or surgical intervention for laryngomalacia.
- Timely diagnosis and appropriate intervention, including specialist referral when needed, optimize outcomes for children with stridor.
Abstract:
The most important issue in diagnosing stridor in infants and children is determining whether it is acute or chronic. The most common cause of acute stridor is croup, a viral infection with a straightforward diagnosis when patients have typical signs and symptoms (ie, inspiratory or biphasic stridor, barking cough, hoarse voice or cry, chest wall retractions). Management of mild and severe cases includes steroids. Patients with severe croup should undergo evaluation in an urgent care center or emergency department; hospital admission may be required. When symptoms are atypical for croup, physicians should consider other causes of acute stridor, including foreign body aspiration, bacterial tracheitis, and epiglottitis. The most common cause of chronic stridor is laryngomalacia, an abnormality in the laryngeal structures that causes the collapse of supraglottic structures over the airway. Symptoms typically develop in the first 1 to 2 months of life, are positional, and do not interfere with growth and development. However, if the diagnosis is in doubt or if the laryngomalacia is severe and the patient has cyanosis, worsening stridor after feeding, or inadequate weight gain, consultation with an otolaryngology subspecialist can be helpful. Most infants outgrow symptoms as the airway enlarges, but some may need pharmacotherapy for gastroesophageal reflux disease and careful feeding until this occurs. Others may need supraglottoplasty. Other causes of chronic stridor include vocal fold paralysis, subglottic hemangiomas, and glottic webs.
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