Emma Daly1, Anna Miles2, Samantha Scott3, Michael Gillham4. 1. The University of Auckland, Auckland, New Zealand. Electronic address: edal913@aucklanduni.ac.nz. 2. The University of Auckland, Auckland, New Zealand. Electronic address: a.miles@auckland.ac.nz. 3. Auckland District Health Board, Auckland, New Zealand. Electronic address: SamanthaSc@adhb.govt.nz. 4. Auckland District Health Board, Auckland, New Zealand. Electronic address: MGillham@adhb.govt.nz.
Abstract
PURPOSE: This retrospective audit set out to identify referral rates, swallowing characteristics, and risk factors for dysphagia and silent aspiration in at-risk patients after cardiac surgery. Dysphagia and silent aspiration are associated with poorer outcomes post cardiac surgery. METHODS: One hundred ninety patients who survived cardiac surgery and received more than 48 hours of intubation were included. Preoperative, perioperative, and postoperative information was collected. RESULTS: Forty-one patients (22%) were referred to speech-language pathology for a swallowing assessment. Twenty-four of these patients (13%) underwent instrumental swallowing assessment, and silent aspiration was observed in 17 (70% of patients diagnosed as having dysphagia via instrumental assessment). Multilogistic analysis revealed previous stroke (P < .05), postoperative stroke (P < .001), and tracheostomy (P < .001) independently associated with dysphagia. The odds ratio for being diagnosed as having pneumonia, if a patient was diagnosed as having dysphagia, was 3.3. CONCLUSIONS: Patients identified with dysphagia after cardiac surgery had a high incidence of silent aspiration and increased risk of pneumonia. However, referral rates were low in this at-risk patient group. Early identification and ongoing assessment and appropriate management of dysphagic patients by a speech-language pathologist are strongly recommended.
PURPOSE: This retrospective audit set out to identify referral rates, swallowing characteristics, and risk factors for dysphagia and silent aspiration in at-risk patients after cardiac surgery. Dysphagia and silent aspiration are associated with poorer outcomes post cardiac surgery. METHODS: One hundred ninety patients who survived cardiac surgery and received more than 48 hours of intubation were included. Preoperative, perioperative, and postoperative information was collected. RESULTS: Forty-one patients (22%) were referred to speech-language pathology for a swallowing assessment. Twenty-four of these patients (13%) underwent instrumental swallowing assessment, and silent aspiration was observed in 17 (70% of patients diagnosed as having dysphagia via instrumental assessment). Multilogistic analysis revealed previous stroke (P < .05), postoperative stroke (P < .001), and tracheostomy (P < .001) independently associated with dysphagia. The odds ratio for being diagnosed as having pneumonia, if a patient was diagnosed as having dysphagia, was 3.3. CONCLUSIONS:Patients identified with dysphagia after cardiac surgery had a high incidence of silent aspiration and increased risk of pneumonia. However, referral rates were low in this at-risk patient group. Early identification and ongoing assessment and appropriate management of dysphagic patients by a speech-language pathologist are strongly recommended.
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