Inspiratory Stridor: Causes & Reasons

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Possible Causes for Inspiratory Stridor

Congenital Laryngomalacia

Prolapse of supraglottic tissues produces a variable amount of airway obstruction and inspiratory stridor. [scholars.northwestern.edu]

When present in neonate/infancy period, they account for severe inspiratory stridor and failure to thrive. [laryngologyandvoice.org]

Most commonly, inspiratory stridor is caused by laryngomalacia. [med-ed.virginia.edu]

Croup

Bilateral vocal-cord paralysis produces a high-pitched inspiratory stridor. (Stridor doesn’t occur in unilateral vocal-cord paralysis.) [web.archive.org]

METHODS: Children were classified as having recurrent croup if they had had 2 or more episodes of barky cough, inspiratory stridor, and hoarseness. [ncbi.nlm.nih.gov]

Inspiratory stridor suggests a laryngeal obstruction, whereas expiratory stridor suggests tracheobronchial obstruction. [emedicine.medscape.com]

Acute Epiglottitis

On admission the patient was ill and severely distressed, sitting in the upright position, drooling saliva, showing severe inspiratory stridor, hyperventilation, but no trismus [ncbi.nlm.nih.gov]

Additionally, airway patency should be established when inspiratory stridor appears assuring uncomplicated recovery. [ncbi.nlm.nih.gov]

stridor or difficulties in swallowing, and (c) a temperature > or = 38 degrees C. [ncbi.nlm.nih.gov]

Foreign Body in the Larynx

They presented with severe attacks of inspiratory stridor, difficulty in breathing and spitting blood. [ncbi.nlm.nih.gov]

stridor, the foreign body is already caudal to the larynx and can no longer be coughed up. [med-college.hu]

Chest examination may reveal evidence of inspiratory noise/stridor suggesting lodged oesophageal foreign body with tracheal compression. [entsho.com]

Foreign Body in the Bronchus

His lung sounds showed mild wheezing with possible mild inspiratory stridor. An albuterol aerosol was administered but no improvement was noted. [dontforgetthebubbles.com]

Approximately 50% of children have inspiratory stridor or expiratory wheezing, with prolongation of the expiratory phase, and medium-to-coarse rhonchi. [9] Tachypnea; nasal [emedicine.medscape.com]

[…] have a higher rate of negative bronchoscopy for foreign body. [8] Physical Choking or coughing is present in 95% of patients presenting with foreign body aspiration. [4] Stridor [emedicine.medscape.com]

Tracheal Foreign Body

His lung sounds showed mild wheezing with possible mild inspiratory stridor. An albuterol aerosol was administered but no improvement was noted. [dontforgetthebubbles.com]

Foreign Body in the Esophagus

Haegen TW,Wojtczak HA, Tomita SS (2003)Chronic inspiratory stridor secondary to a retained penetrating radiolucent esophageal foreign body. J PediatrSurg38:e6. [jorl.net]

Angioedema

stridor, potentially life-threatening Possibly swelling of extremities and urogenital area (e.g., hands, feet, scrotum) Bradykinin-mediated angioedema Hereditary angioedema [amboss.com]

In severe cases, stridor of the airway occurs, with gasping or wheezy inspiratory breath sounds and decreasing oxygen levels. [en.wikipedia.org]

[…] blocker-induced): impaired bradykinin breakdown References:[1][2][3][4][5] Clinical features Common symptoms Facial edema (mouth, eyelids, tongue) Laryngeal involvement: dyspnea and inspiratory [amboss.com]

Tracheobronchial Injury

Inspiratory stridor is the hallmark of airway obstruction at or above the level of the vocal cords. [emedicine.com]

Bilateral Recurrent Laryngeal Nerve Paralysis

Case report An 80 year old patient was admitted to the emergency room of the local hospital for severe dyspnea with inspiratory stridor and tachypnea. [signavitae.com]

An inspiratory stridor and hoarse cry were noted at a few hours of age. [nature.com]

On 2nd postoperation day the patient developed inspiratory stridor. She also became agitated and breathless. The following day she was referred to the ENT department. [jpma.org.pk]

Spasmodic Croup

Our results show that stridor in this patient was due to dynamic inspiratory constriction of the vocal cords. [ncbi.nlm.nih.gov]

Inspiratory stridor in croup. Stridor Audio file courtesy of David W. Cugell, MD. [merckmanuals.com]

A barking, often spasmodic cough and sometimes inspiratory stridor (caused by subglottic edema) are the most prominent symptoms; symptoms are often worse at night. [merckmanuals.com]

Laryngospasm

Bilateral vocal-cord paralysis produces a high-pitched inspiratory stridor. (Stridor doesn’t occur in unilateral vocal-cord paralysis.) [americannursetoday.com]

Inspiratory Stridor Typically caused by obstruction at or above the level of the vocal cords Expiratory Stridor Usually localized to the more distal tracheobronchial tree [slideshare.net]

Patients usually present with inspiratory or biphasic stridor that may worsen as the hemangioma enlarges. [emedicine.medscape.com]

Acute Laryngitis and/or Tracheitis

The child then develops the characteristic “barking” cough, hoarseness, and inspiratory stridor. [clinicalgate.com]

Monitoring in a hospital is warranted in patients with clear inspiratory stridor and retraction on inspiration also in an upright position and at rest despite first aid medication [ebm-guidelines.com]

[…] on inhalation, aka inspiratory stridor, dyspnea, high fever, toxic appearance Management Hospitalization, endotracheal tube, penicillin, cephalosporin. [medical-dictionary.thefreedictionary.com]

Bacterial Tracheitis

A previously healthy young adult presented with inspiratory stridor and hoarseness but minimal dysphagia. [ncbi.nlm.nih.gov]

An 18-month-old girl was brought to the emergency room of Chang Gung Children's Hospital with inspiratory stridor, suprasternal retractions and imminent respiratory failure [ncbi.nlm.nih.gov]

Bacterial tracheitis is the term used to describe a severe infraglottic infection characterized by toxicity, brassy cough, inspiratory stridor, subglottic oedema and the presence [ncbi.nlm.nih.gov]

Vocal Cord Dysfunction

Myasthenic vocal cord dysfunction (VCD), presenting with severe inspiratory stridor, was successfully treated with nasal continuous positive airway pressure (nCPAP), thus [ncbi.nlm.nih.gov]

However, evaluation revealed inspiratory stridor and flattening of the inspiratory limb of the flow-volume curve. [ncbi.nlm.nih.gov]

During the specific inhalation challenge, the patients showed dysphonia, chest tightness, inspiratory stridor, and flattening of the inspiratory limb of the maximum flow-volume [ncbi.nlm.nih.gov]

Distal Spinal Muscular Atrophy Type 1

Patients typically have a history of intrauterine growth retardation, low birth weight, feeble cry, weak suck and failure to thrive and present with inspiratory stridor, recurrent [orpha.net]

Acute Subglottic Laryngitis

A low-grade fever, barking cough, inspiratory stridor and hoarseness then develop. [aafp.org]

Clinically it presents with protracted barking cough and inspiratory stridor due to mucosal edema resulting in tracheal narrowing. [radiopaedia.org]

In viral croup, narrowing of the subglottic trachea in a child’s airway results in audible inspiratory stridor. [atsu.edu]

Laryngeal Obstruction

Laryngeal obstruction typically induces inspiratory stridor as opposed to asthma causing expiratory wheeze. [bora.uib.no]

But slight inspiratory dyspnea and stridor may occur during crying or on exertion 5 Laryngeal obstruction classification: Ⅱ°slight inspiratory dyspnea during quiet respiration [slideplayer.com]

The first patient was a four-month-old infant with inspiratory stridor due to a subglottic haemangioma obstructing 80 per cent of the lumen. [ncbi.nlm.nih.gov]

Congenital Tracheomalacia

A 58-year-old woman with a history of polychondritis presented with inspiratory stridor and respiratory difficulties. [emedicine.com]

Mild laryngomalacia is an isolated, intermittent inspiratory stridor, accompanied by normal growth and development. [pedclerk.bsd.uchicago.edu]

CT image showing tracheal narrowing in a 58-year-old woman with a history of polychondritis who presented with inspiratory stridor and respiratory difficulties. [emedicine.com]

Cricoarytenoid Ankylosis

Shortly postextubation, the patient developed inspiratory stridor, which disappeared after a second dose of neostigmine. [paperity.org]

His symptoms progressed to increasingly noisy breathing, exertional dyspnea and finally inspiratory stridor. [jcdr.net]

Anaphylaxis : Hoarseness and inspiratory stridor. Accompanied by other symptoms of an allergic reaction. Usually within 30 minutes of exposure to an allergen. [patient.info]

Bilateral Vocal Cord Paralysis

Two neonates presented with inspiratory stridor due to bilateral vocal cord paralysis associated with occipital encephalocele, Chiari malformation, and hydrocephalus in one [ncbi.nlm.nih.gov]

Our patient was referred due to audible inspiratory stridor when he was seven days old. [ncbi.nlm.nih.gov]

METHODS: Four newborns had inspiratory stridor immediately after birth; two had to be intubated. Laryngotracheoscopy revealed bilateral vocal cord paralysis. [ncbi.nlm.nih.gov]

Tracheomalacia

A 58-year-old woman with a history of polychondritis presented with inspiratory stridor and respiratory difficulties. [emedicine.com]

Mild laryngomalacia is an isolated, intermittent inspiratory stridor, accompanied by normal growth and development. [pedclerk.bsd.uchicago.edu]

RESULTS: In all patients, surgical expansion of the malacic segment using ceramic rings was successfully carried out without major complications while inspiratory stridor [ncbi.nlm.nih.gov]

Airway Obstruction

Inspiratory stridor was evident on physical examination. [nejm.org]

Physical examination revealed inspiratory stridor, which indicated an airway obstruction caused by substernal thyrotoxic MNG. [ncbi.nlm.nih.gov]

Two patients with inspiratory stridor, anterior neck swelling, and facial edema progressed to respiratory distress and their hematomas were removed by surgery, during which [ncbi.nlm.nih.gov]

Thymoma

Thymomas generally arise from the thymus in the anterior mediastinum. Ectopic thymomas arising in the middle mediastinum are rare. We present a case of a thymoma arising from the ectopic thymic tissue in the right paratracheal region. The patient was a 67-year-old male who underwent an enhanced-computed[…] [ncbi.nlm.nih.gov]

Acute Tracheitis

Additionally, they demonstrate remarkable exam findings such as inspiratory stridor and possibly expiratory stridor, retractions, bark-like cough, and cyanosis. [symptoma.com]

Increasing deep or barking croup cough following a recent upper respiratory infection Crowing sound when inhaling (inspiratory stridor) 'Scratchy' feeling in the throat Chest [en.wikipedia.org]

The child then develops the characteristic “barking” cough, hoarseness, and inspiratory stridor. [clinicalgate.com]

Asphyxia

Clin Perinatol. 2016 Sep;43(3):501-10. doi: 10.1016/j.clp.2016.04.008. Author information 1 Department of Pediatrics, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Room F3.312B, Dallas, TX 75390-9063, USA. Electronic address: Lina.chalak@utsouthwestern.edu. Abstract Although therapies in[…] [ncbi.nlm.nih.gov]

Laryngeal Disease

see ENT Reasonably common Biphasic stridor inspiratory more prominent Most commonly idiopathic Occaisionally trauma Typically adult female with remote, routine intubation [quizlet.com]

Laryngomalacia results in partial airway obstruction, most commonly causing a characteristic high-pitched squeaking noise on inhalation (inspiratory stridor ). [en.wikipedia.org]

Diagnosis A history of early inspiratory stridor associated with signs of respiratory distress suggests bilateral vocal fold paralysis. [emedicine.medscape.com]

Foreign Body Aspiration

stridor if high in the airway (* listen to stridor ) Wheezing and decreased breath sounds if low in the airway 80% in mainstem or lobar bronchus, 20% in upper airway, righ [smartypance.com]

References:[2][1] Differential diagnoses See differential diagnoses of pediatric inspiratory stridor Bronchial asthma, acute obstructive bronchitis: Dyspnea;, coughing, bilateral [amboss.com]

His lung sounds showed mild wheezing with possible mild inspiratory stridor. An albuterol aerosol was administered but no improvement was noted. [dontforgetthebubbles.com]

Vocal Cord Paralysis

Two neonates presented with inspiratory stridor due to bilateral vocal cord paralysis associated with occipital encephalocele, Chiari malformation, and hydrocephalus in one [ncbi.nlm.nih.gov]

In the recovery room, he complained of sore throat and dyspnea with inspiratory stridor, which were not resolved after intravenous injection of 10 mg of dexamethasone. [ncbi.nlm.nih.gov]

stridor were detected. [ncbi.nlm.nih.gov]

Congenital Laryngeal Cyst

When present in neonate/infancy period, they account for severe inspiratory stridor and failure to thrive. [laryngologyandvoice.org]

She was tachypneic, and the inspiratory stridor was worse in the right lateral decubitus position. There were subcostal retractions. [arquivosdeorl.org.br]

Examination revealed a wasted baby weigh-ing 2.5 kg with tachypnea (respiratory rate 64/min), suprasternal recessions and inspiratory stridor. [indianpediatrics.net]