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      Recovery from Dysphagia Symptoms after Oral Endotracheal Intubation in Acute Respiratory Distress Syndrome Survivors. A 5-Year Longitudinal Study

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          Abstract

          Nearly 60% of patients who are intubated in intensive care units (ICUs) experience dysphagia after extubation, and approximately 50% of them aspirate. Little is known about dysphagia recovery time after patients are discharged from the hospital.

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          Postextubation dysphagia is persistent and associated with poor outcomes in survivors of critical illness

          Introduction Dysphagia is common among survivors of critical illness who required mechanical ventilation during treatment. The risk factors associated with the development of postextubation dysphagia, and the effects of dysphagia on patient outcomes, have been relatively unexplored. Methods We conducted a retrospective, observational cohort study from 2008 to 2010 of all patients over 17 years of age admitted to a university hospital ICU who required mechanical ventilation and subsequently received a bedside swallow evaluation (BSE) by a speech pathologist. Results A BSE was performed after mechanical ventilation in 25% (630 of 2,484) of all patients. After we excluded patients with stroke and/or neuromuscular disease, our study sample size was 446 patients. We found that dysphagia was present in 84% of patients (n = 374) and classified dysphagia as absent, mild, moderate or severe in 16% (n = 72), 44% (n = 195), 23% (n = 103) and 17% (n = 76), respectively. In univariate analyses, we found that statistically significant risk factors for severe dysphagia included long duration of mechanical ventilation and reintubation. In multivariate analysis, after adjusting for age, gender and severity of illness, we found that mechanical ventilation for more than seven days remained independently associated with moderate or severe dysphagia (adjusted odds ratio (AOR) = 2.84 [interquartile range (IQR) = 1.78 to 4.56]; P < 0.01). The presence of severe postextubation dysphagia was significantly associated with poor patient outcomes, including pneumonia, reintubation, in-hospital mortality, hospital length of stay, discharge status and surgical placement of feeding tubes. In multivariate analysis, we found that the presence of moderate or severe dysphagia was independently associated with the composite outcome of pneumonia, reintubation and death (AOR = 3.31 [IQR = 1.89 to 5.90]; P < 0.01). Conclusions In a large cohort of critically ill patients, long duration of mechanical ventilation was independently associated with postextubation dysphagia, and the development of postextubation dysphagia was independently associated with poor patient outcomes.
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            Readmission diagnoses after hospitalization for severe sepsis and other acute medical conditions.

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              Persistent neuromuscular and neurophysiologic abnormalities in long-term survivors of prolonged critical illness.

              To establish the prevalence, clinical characteristics, and electrophysiologic features of residual neuromuscular dysfunction after prolonged critical illness. Prospective follow-up study of survivors of prolonged critical illness. A university hospital and two district general hospitals in the UK. The study occurred for a period of 5 yrs. All patients during that time who were in the intensive care unit for >28 days were entered in the study. At follow-up, length of intensive care unit and hospital stay, duration of mechanical ventilation and admission Acute Physiology and Chronic Health Evaluation II score were recorded from the case notes. A clinical history was obtained, a Barthel Index disability score was calculated, and a full neurologic examination was performed. Nerve conduction studies, needle electromyography, single-fiber electromyography and thermal thresholds were performed. A total of 195 patients were identified. There were 86 survivors, of whom 47 could be contacted and 22 consented to be studied. The median time from intensive care unit discharge to follow-up was 43 months (range, 12-57 months). All gave a clear history of severe weakness and functional impairment after hospital discharge and, in all, recovery was prolonged. Motor or sensory deficits were present on clinical examination in 59% of the patients studied. Common peroneal nerve palsy was present in two patients. A total of 21 of 22 (95%) patients had electromyographic evidence of chronic partial denervation at follow-up, findings indicative of a preceding axonal neuropathy. The single-fiber electromyographic studies were also consistent with a preceding motor neuropathy. Severe weakness requiring prolonged rehabilitation and abnormal clinical neurologic findings are extremely common in survivors of protracted critical illness. Neurophysiologic evidence of chronic partial denervation of muscle consistent with previous critical illness polyneuropathy is almost invariable and can be found up to 5 yrs after intensive care unit discharge in >90% of these long-stay patients. Evidence of myopathy is unusual. These findings have important implications for the management and rehabilitation of intensive care survivors.
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                Author and article information

                Journal
                Annals of the American Thoracic Society
                Annals ATS
                American Thoracic Society
                2329-6933
                2325-6621
                March 2017
                March 2017
                : 14
                : 3
                : 376-383
                Article
                10.1513/AnnalsATS.201606-455OC
                5427721
                27983872
                bd2376e3-dd31-4d1c-9c72-7080aa739bfd
                © 2017
                History

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