Continuous Positive Airway Pressure for Upper Airway Obstruction in Infants with Pierre Robin Sequence
Alessandro AmaddeoVéronique AbadieChristel ChalouhiNatacha KadlubAnnick FrapinAlexandre LapillonneNicolas LeboulangerE.N. GarabédianA. PicardBrigitte Fauroux
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The aim of the study was to evaluate noninvasive continuous positive airway pressure as first-line treatment for upper airway obstruction in neonates with Pierre Robin sequence. Forty-four neonates were enrolled and classified in 4 groups: ventilator-dependent patients (severe upper airway obstruction group), patients with clinical upper airway obstruction, an abnormal (moderate upper airway obstruction group) or normal polygraphy (mild upper airway obstruction group), and those with no clinical upper airway obstruction (no upper airway obstruction group). Five neonates in the severe upper airway obstruction group (n = 9) were successfully managed by noninvasive continuous positive airway pressure and 4 required a tracheotomy. The moderate upper airway obstruction group (n = 4) was successfully managed by noninvasive continuous positive airway pressure and the other patients by prone positioning. Continuous positive airway pressure represents an effective treatment of upper airway obstruction in Pierre Robin sequence and may be recommended in selected patients.Therapeutic, IV.Keywords:
Airway obstruction
Pierre Robin syndrome
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During respiration, upper airway collapse occurs when the forces generated from the airway negative pressures become greater than the forces of the airway wall muscles. For patients diagnosed with moderate to severe obstructive sleep apnea (OSA), Continuous Positive Airway Pressure (CPAP) is the most effective non-invasive treatment. The CPAP provides a continuous humidified and pressurized air to prevent airway collapse. The use of the CPAP has been reported to be associated with some side effects including nasal congestion and dry nose. Also stroke symptoms were recorded for cardiovascular disease patients due to the high operating pressure. Using MRI scans, this paper investigates the effects of using the pressure oscillations superimposed on the CPAP to keep the airway open at lower pressure distributions inside the upper airway and consequently increase the patients’ comfort and reduce their rejection to the CPAP.
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Pierre Robin sequence (PRS), also called Robin sequence, is a congenital anomaly characterized by a triad of micrognathia, glossoptosis, and upper airway obstruction. Infants with PRS can present with varying degrees of respiratory difficulty secondary to upper airway obstruction. There has been no consensus for the treatment of upper airway obstruction in infants with PRS, but recent studies recommend attempting non-surgical interventions before surgical treatment. In this case report, we present 3 cases of infants diagnosed with PRS who showed persistent respiratory difficulties after birth. Before considering surgical intervention, insertion of a nasopharyngeal airway was attempted in these infants. Following this procedure, symptoms of upper airway obstruction were relieved, and all infants were discharged without surgical interventions; the nasopharyngeal airway was removed 1 to 2 months later. To date, no infant has shown signs of upper airway obstruction. Nasopharyngeal airway insertion is a highly effective and less invasive treatment option for infants with PRS. However, it is not widely known and used in Korea. Nasopharyngeal airway insertion can be preferentially considered before surgical intervention for upper airway obstruction in such infants. Keywords: Pierre Robin syndrome; Upper airway obstruction; Nasopharyngeal airway
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A retrospective review was carried out of 11 consecutive patients with the Pierre Robin sequence referred to a tertiary paediatric referral centre over a five year period from 1993 to 1998. Ten patients were diagnosed with significant upper airway obstruction; seven of these presented late at between 24 and 51 days of age. Failure to thrive occured in six of these seven infants at the time of presentation, and was a strong indicator of the severity of upper airway obstruction. Growth normalised on treatment of the upper airway obstruction with nasopharyngeal tube placement. All children had been reviewed by either an experienced general paediatrician or a neonatologist in the first week of life, suggesting that clinical signs alone are insufficent to alert the physician to the degree of upper airway obstruction or that obstruction developed gradually after discharge home. The use of polysomnography greatly improved the diagnostic accuracy in assesssing the severity of upper airway obstruction and monitoring the response to treatment. This report highlights the prevalence of late presentation of upper airway obstruction in the Pierre Robin sequence and emphasises the need for close prospective respiratory monitoring in this condition. Objective measures such as polysomnography should be used, as clinical signs alone may be an inadequate guide to the degree of upper airway obstruction.
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Topicalisation of the airway by various techniques has routinely been recommended for awake fibre-optic bronchoscopy in cases of difficult airway. However, topicalisation by itself can cause airway obstruction by decreasing the tone of the laryngeal muscles and causing a dynamic air inflow obstruction. Two cases of difficult airway are illustrated where anaesthetising upper airway with nebulisation with 4% lignocaine (Xylocaine™) or 2% lignocaine (Xylocaine™) jelly resulted in stridor and upper airway obstruction. This is the first reported case of airway obstruction after lignocaine (Xylocaine™) jelly. We would like to highlight that topicalisation of airway, once thought as a relatively safe technique, can cause airway collapse if not detected and anticipated at the earliest. Pre-operative spirometry and airway ultrasonography can be useful in detecting the patients at risk of developing airway obstruction. Using a nasopharyngeal airway during topicalisation can serve as a valuable device in preventing total airway obstruction in susceptible patients.
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Abstract We developed a technique to determine the site of upper airway obstruction in patients with idiopathic obstructive sleep apnea (OSA). This technique is based on the analysis of inspiratory airflow pressures at various levels of the pharyngeal airway during sleep. Pharyngeal pressure was measured by a moveable Millar catheter pressure transducer. The catheter's position in the airway was localized radiographically. Ten patients with OSA were tested: five patients were found to have upper airway obstruction at the level of the soft palate, and five had upper airway obstruction at the base of the tongue. We concluded that measuring airway pressures at multiple sites along the airway is useful in localizing the site of obstruction in patients with OSA, and may have important implications in terms of the patient's response to surgical treatment.
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The aim of the study was to evaluate noninvasive continuous positive airway pressure as first-line treatment for upper airway obstruction in neonates with Pierre Robin sequence. Forty-four neonates were enrolled and classified in 4 groups: ventilator-dependent patients (severe upper airway obstruction group), patients with clinical upper airway obstruction, an abnormal (moderate upper airway obstruction group) or normal polygraphy (mild upper airway obstruction group), and those with no clinical upper airway obstruction (no upper airway obstruction group). Five neonates in the severe upper airway obstruction group (n = 9) were successfully managed by noninvasive continuous positive airway pressure and 4 required a tracheotomy. The moderate upper airway obstruction group (n = 4) was successfully managed by noninvasive continuous positive airway pressure and the other patients by prone positioning. Continuous positive airway pressure represents an effective treatment of upper airway obstruction in Pierre Robin sequence and may be recommended in selected patients.Therapeutic, IV.
Airway obstruction
Pierre Robin syndrome
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Airway obstruction
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Le Fort fractures are a part of the facial fracture spectrum, sustained from significant forces of impact to the midface. The mechanism of airway obstruction in Le Fort fractures is attributed to midface instability with posterior inferior displacement into the oropharyngeal airway. Otolaryngologists often participate in the evaluation and management of such patients, securing the airway, if necessary. It is important, therefore, to understand the mechanisms responsible for acute airway obstruction in these types of fractures. A retrospective review of 64 cases of Le Fort fractures, representing a 3-year period, was performed to determine the factors responsible for acute airway obstruction. The review disclosed that airway obstruction is due most often to hemorrhage into the upper airway from multiple sources, with inability to handle blood and the oral secretions. An emergency airway was required by one third of the patients with Le Fort fractures in this review.
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