Trauma and Postextubation Stridor Biology essay
Laryngeal edema LE is a frequent complication of intubation and is caused by trauma to the larynx. 1, 2 The edema results in a reduction in size of the larynx. Post-extubation stridor is the presence of inspiratory sounds that indicate airway constriction may occur after extubation. are supraglottic, but usually glottic and infraglottic. The cuff leak test CLT has been widely accepted as a simple and noninvasive method for predicting stridor PES after extubation. However, despite the relatively small sample size in each randomized controlled trial and a wide range of ages and steroid administration regimens, our results suggest that the cuff leak test CLT has been widely accepted as a simple and non-invasive method for predicting post-extubation stridor PES. However, its accuracy, the absence of cuff leakage, indicates the presence of airway edema, which increases the risk of stridor after extubation and reintubation. However, the test isn't that great. Lack of cuff leakage may also occur. Laryngeal edema is a frequent complication of intubation. It often presents shortly after extubation as post-extubation stridor and results from damage to the mucosa of the larynx. Mucosal damage is caused by pressure and ischemia, resulting in an inflammatory response. Laryngeal edema can affect the airways, causing stridor after extubation, sometimes seen in adults, but common in young children of years old, with a reported incidence of -4. The pathophysiology of this condition involves local mucosal and submucosal trauma caused by the endotracheal tube with resultant transient intraluminal subglottic narrowing. Stridor is an abnormal, high-pitched sound produced by turbulent airflow through a partially blocked airway at the supraglottis, glottis, subglottis, or trachea. 1 However, the tonal characteristics are extremely variable, i.e. harsh, musical or breathy, in combination with the phase, volume, duration, initial velocity and pitch. The positive predictive value for post-extubation stridor with a cuff leak less ml. 80, the predictive value for the absence of postextubation stridor with cuff leak volume. Although clinical estimates of stridor after extubation may vary. endoscopic abnormalities may be present in more than half of patients after extubation. Gomes Cordeiro et al. 2004. Single-institutional studies have shown that minor changes such as edema, hyperemia, or mucosal edema may occur in infants and children. Laryngeal edema is not the only lesion responsible for postextubation upper airway obstruction and/or stridor. In a prospective study of patients receiving long-term mechanical ventilation, routine examination of the larynx after extubation revealed that laryngeal damage occurred in three-quarters of patients, with an even higher percentage after long-term mechanical ventilation.,