Coordination of Pharyngeal and Laryngeal Swallowing Events During Single Liquid Swallows After Oral Endotracheal Intubation for Patients with Acute Respiratory Distress Syndrome.
Martin B Brodsky, Ishani De, Kalyan Chilukuri and 3 others
PMID 29713897WHAT IT FOUND
In 11 ARDS patients after intubation, the time the larynx stayed closed was unchanged compared with healthy volunteers, but time to close the larynx was longer and the whole swallow took longer; only one aspirated.
Key findings
01Duration of laryngeal closure showed no significant difference between groups (p=0.987).
02ARDS patients took a median 151 ms longer than healthy controls to achieve maximum laryngeal closure (p<0.001).
03Total pharyngeal swallow duration was a median 635 ms longer in ARDS patients (p<0.001), but only one patient aspirated during VFSS.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
The ARDS group had only 11 patients, so the results are imprecise and may not detect clinically important differences. Only 26 of 191 ARDS patients completed VFSS, and 11 of 26 met eligibility, so the findings may not represent all ARDS patients. The study included only orally intubated ARDS patients who were referred for VFSS, not all ARDS patients or other critically ill patients who were intubated. Recording media and frame rates differed between ARDS patients and healthy volunteers. Only one ARDS patient aspirated, so the study cannot determine whether the timing changes increase aspiration risk. The field of view was intentionally limited for ARDS patients to reduce radiation exposure, which differs from the healthy volunteers.
Declared interests
The authors declared no conflict of interest. The article is listed as supported by NIH extramural research.
The easy way to misread this
Do not conclude that delayed laryngeal closure causes aspiration or that these timing changes require a specific treatment. Only one of 11 ARDS patients aspirated, and the study compared timing in a small group without testing an intervention.