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Intensive Care Med. 2010 Jun;36(6):991-8. doi: 10.1007/s00134-010-1847-z. Epub 2010 Mar 18.

Post-intubation laryngeal injuries and extubation failure: a fiberoptic endoscopic study.

Author information

1
Service de Réanimation Médicale, Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges Pompidou, 20-40, rue Leblanc, 75908, Paris Cedex 15, France. jean-marc.tadie@egp.aphp.fr

Abstract

PURPOSE:

To describe laryngeal injuries after intubation in an intensive care unit and assess their risk factors and their association with post-extubation stridor (PES) and extubation failure.

METHODS:

Prospective study including 136 patients extubated after more than 24 h of mechanical ventilation. Fiberoptic endoscopic examination of the larynx was systemically performed within 6 h after extubation in order to record four types of laryngeal anomalies: edema, ulceration, granulation, and abnormal vocal cord (VC) mobility.

RESULTS:

Median duration of intubation was 3 days (min 24 h, max 56 days). Laryngeal injuries were frequent (73% of patients) and were associated with duration of intubation [odds ratios (OR) 1.11, 95% confidence interval (CI) 1.02-1.21, P = 0.02] and absence of use of myorelaxant drugs at intubation (OR 0.13, 95% CI 0.01-0.99, P = 0.05). Eighteen patients presented a PES. Lesions associated with PES were edema (67%, P < 0.01) and abnormal VC mobility (67%, P < 0.01). These injuries were associated with duration of intubation (OR 1.05, 95% CI 1.01-1.09, P = 0.04), emergency intubation (OR 2.7, 95% CI 1.2-6.4, P = 0.02), and height/endotracheal tube size ratio (OR 0.97, 95% CI 0.95-0.99, P = 0.01). Seventeen patients were reintubated within 48 h following extubation. Laryngeal examination of these patients more frequently showed granulation (29.4%, P = 0.02) and abnormal VC mobility (58.8%, P < 0.01).

CONCLUSION:

This study found a high frequency of laryngeal injuries after extubation in ICU, which were associated with intubation duration and patient's height/ETT size ratio. Edema was not the only injury responsible for PES, and although edema is frequent it is not the only injury associated with reintubation.

PMID:
20237758
DOI:
10.1007/s00134-010-1847-z
[Indexed for MEDLINE]

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