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Dysphagia Post-Extubation Affects Long-Term Mortality in Mixed Adult ICU Patients-Data From a Large Prospective

Patrick Zuercher¹, Michel Moser¹, Jan Waskowski¹

¹All authors: Department of Intensive Care Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.

Critical Care Explorations

|June 29, 2022

Abstract:

Data on long-term effects of post-extubation dysphagia is lacking. We investigate mid- and long-term clinical outcomes in a large sample of ICU patients with systematic dysphagia screening.

Design:

Outcome analysis with a follow-up of 6 years or death (whichever occurred earlier) of ICU patients from a prospective observational trial (Dysphagia in Mechanically Ventilated ICU Patients study) with systematic dysphagia screening.

Setting:

ICU of a tertiary care academic center.

Patients:

Nine-hundred thirty-three mixed medical-surgical ICU patients (median age, 66 yr; interquartile range [IQR], 54-74, Acute Physiology and Chronic Health Evaluation II score 19 [IQR, 14-24], 71% male).

Interventions:

ICU patients were followed up for a mean follow-up period of 1,731 ± 772 days (4.7 ± 2.1 yr). Primary outcome measures were 180-day and 360-day all-cause mortality in ICU patients with versus without dysphagia.

Measurements And Main Results:

Two-hundred seventy-three patients died (29.3%) during the observational interval (n = 76 lost to follow-up). In dysphagia screening positive versus negative ICU patients, mortality at 180 days was 16% versus 5.8% (excess mortality 10.2%), whereas mortality at 360 days was 25% versus 9.1% (excess mortality 15.9%). Adjustment for confounders in a Cox model revealed a significant association of dysphagia with all-cause mortality in a time-dependent manner. The risk of death in ICU patients with versus without post-extubation dysphagia declined from about 2.5 times higher to about equal risk for both groups over the first year (i.e. 1.03 yr) post-ICU admission (at 360 d: hazard ratio [HR], 1.03; 95% CI, 0.42-3.70). The mean mortality HR for the first year post-ICU admission was HR 2.09 (95% CI, 1.34-3.24; p = 0.0009).

Conclusions:

Long-term follow-up of a large cohort of medical-surgical adult ICU patients systematically screened for dysphagia showed that dysphagia is associated with increased hazards for death for up to 1 year after ICU admission. Our data underline effects of post-extubation dysphagia on long-term clinical outcomes in affected critically ill patients.

Keywords:

critical deglutition disorder illness long-term outcomes mortality post-extubation dysphagia swallowing dysfunction

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