Accuracy of bedside clinical methods compared with fiberoptic endoscopic examination of swallowing (FEES) in determining the risk of aspiration in acute stroke …
SHB Lim, PK Lieu, SY Phua, R Seshadri… - Dysphagia, 2001 - Springer
SHB Lim, PK Lieu, SY Phua, R Seshadri, N Venketasubramanian, SH Lee, PWJ Choo
Dysphagia, 2001•SpringerThis prospective study was undertaken to determine the accuracy of bedside clinical
methods compared with fiberoptic endoscopic examination of swallowing (FEES®) for
detecting aspiration in acute stroke patients. Fifty patients underwent an examination of their
ability to swallow 50 ml of water in 10-ml aliquots. Later their oxygen saturation levels before
and after swallowing 10 ml of water were measured using a pulse oximeter. Oxygen
desaturation of more than 2%, was considered to be clinically significant. All patients then …
methods compared with fiberoptic endoscopic examination of swallowing (FEES®) for
detecting aspiration in acute stroke patients. Fifty patients underwent an examination of their
ability to swallow 50 ml of water in 10-ml aliquots. Later their oxygen saturation levels before
and after swallowing 10 ml of water were measured using a pulse oximeter. Oxygen
desaturation of more than 2%, was considered to be clinically significant. All patients then …
Abstract
This prospective study was undertaken to determine the accuracy of bedside clinical methods compared with fiberoptic endoscopic examination of swallowing (FEES®) for detecting aspiration in acute stroke patients. Fifty patients underwent an examination of their ability to swallow 50 ml of water in 10-ml aliquots. Later their oxygen saturation levels before and after swallowing 10 ml of water were measured using a pulse oximeter. Oxygen desaturation of more than 2%, was considered to be clinically significant. All patients then underwent a FEES assessment by a speech therapist and were followed up during their inpatient stay for evidence of aspiration pneumonia. The oxygen desaturation test had a sensitivity of 76.9% and specificity of 83.3% (χ2= 18.154, p= 0.00002), while the 50-ml water swallow test had a sensitivity of 84.6% and specificity of 75.0% (χ2= 18.001, p= 0.00002). However, when these two tests were combined into one test called ``bedside aspiration,'' the sensitivity rose to 100% with a specificity of 70.8% (χ2= 27.9, p= 0.000001). Five (10%) patients developed pneumonia during their inpatient stay. The relative risk (RR) of developing pneumonia, if there was evidence of aspiration on FEES, was 1.24 (1.03 < RR < 1.49). We conclude that the oxygen desaturation test combined with the 50-ml water swallow test is suitable as a screening test to identify all acute stroke patients at risk of aspiration for further evaluation and management.
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