Assessment, Diagnosis, and Treatment of Dysphagia in Patients Infected With SARS-CoV-2: A Review of the Literature and International Guidelines

The effects of noninvasive respiratory support on swallowing physiology, airway protection, and respiratory-swallow pattern in adults: A systematic review

PURPOSE

The use of noninvasive respiratory support- namely high flow of oxygen delivered via nasal cannula (HFNC), continuous positive airway pressure (CPAP), and noninvasive ventilation (NIV) - has been expanding in recent years. The physiologic mechanisms underlying each of these forms of support are generally well understood. In contrast, the effects on the sensorimotor mechanisms of swallowing movements, and of breathing and swallowing coordination ─ critical elements of airway protection and bolus clearance ─ remain unclear. The purpose of this systematic review is to assess the existing evidence about the impact of noninvasive respiratory support on swallowing mechanics, airway protection, and respiratory-swallowing patterns in adults.

METHODS

Six databases (PubMed, EMBASE, Web of Science, Scopus, CINAHL and ProQuest Dissertations & Theses) were searched using predetermined terms. Inclusion criteria were: 1) adult humans 2) use of noninvasive respiratory support, and 3) assessment of swallowing.

RESULTS

We identified 8727 articles for screening; 15 met the inclusion criteria. Six studies assessed noninvasive respiratory support in healthy adults, and 9 assessed participants with heterogenous respiratory diagnoses including chronic obstructive pulmonary disease (COPD), obstructive sleep apnea (OSA), acute respiratory failure, and chronic respiratory failure due to neuromuscular disease. Risk of bias was assessed using a modified NIH Quality Assessment Tool. In healthy adults, results demonstrated mixed effects of HFNC and CPAP on measures of swallowing function, airway protection, and respiratory swallowing patterns. Negative effects on respiratory-swallowing patterns were reported with NIV. In adults with heterogeneous respiratory diagnoses, six studies reported that HFNC, CPAP, or nasal NIV improved measures of swallowing and respiratory-swallowing patterns. HFNC has mixed effects on swallowing measures in ICU patients. NIV increased atypical respiratory-swallowing patterns in patients with stable COPD.

CONCLUSIONS

Due to small sample sizes and the wide variation in study designs, the impact of noninvasive respiratory support on swallowing, airway protection, and respiratory-swallowing patterns cannot be confidently assessed based on the current evidence. Future studies using standardized, validated, and reproducible methods to assess the impact of noninvasive respiratory support on swallowing physiology and airway protection are warranted.

Dysphagia management by nurses in Spanish intensive care units

INTRODUCTION/PURPOSE

Dysphagia is a disorder that presents with specific signs and symptoms in critically ill patients. Intensive care unit (ICU) nurses are responsible for monitoring and detecting abnormalities in critically ill patients, so they must be trained to assess swallowing and the complications that may arise. The aim of this research is to analyse the dynamics of the detection and assessment of dysphagia by ICU nurses.

METHOD

Cross-sectional descriptive study using an electronic questionnaire to nurses from different Spanish ICUs. The survey was adapted from previous research and consisted of 6 sections with 30 items of qualitative questions. The collection period was between December 2022 and March 2023. Statistical analysis was performed using frequencies and percentages, and the Chi-Square test was used for bivariate analysis.

OUTCOMES

43 nurses were recruited. Dysphagia is considered an important problem (90,7%) but in 50,3% of the units there is no standard or care protocol for this disorder. The most common technique is the swallowing test (32,6%). There is a consensus in our sample that aspiration pneumonia is the main problem; however, nurses in the busiest care units consider sepsis to be a frequent complication (p = ,029). The most common treatment is modification of food consistency (86,0%).

CONCLUSION

The findings of this research show a low systematisation of dysphagia screening in the units included. There is a need for greater implementation of interventions and clinical protocols for monitoring complications as well as for compensatory and rehabilitative management.

The impact of COVID-19 on head and neck cancer patients: A review of speech valve complications and patient experience during the COVID-19 pandemic in the United Kingdom

PURPOSE

Surgical voice restoration (SVR) is associated with improved patient quality of life following laryngectomy. This study aims to determine the impact of the COVID-19 pandemic on patients with SVR and analyse the complications in this cohort of patients.

METHOD

A retrospective review of all patients with SVR at a single tertiary ear, nose, and throat (ENT) unit in the UK for 12 months during the COVID-19 pandemic, with comparison to the preceding 12 months. A survey was also administered to assess patients' experiences during the pandemic.

RESULT

Thirty-six patients were included in this study. During the pandemic period, 19.5% (n = 7) patients had significant complications, with five patients needing surgery to restore speech. In the 12 months pre-pandemic, 13.5% (n = 5) had significant complications, although none required surgery to restore speech. Six patients (19.4%) felt these complications were avoidable in normal circumstances. Further, 30.5% (n = 11) of patients reported a delay in seeking medical attention due to concerns about their vulnerability to COVID-19.

CONCLUSION

The COVID-19 pandemic has had an impact on many patients with SVR. This has resulted in a large proportion of patients experiencing delayed care, a loss of voice, a need for further surgical intervention, and negative impacts on their quality of life.

Therapeutic approach to dysphagia in post-COVID patients in a rehabilitation unit: a descriptive longitudinal study

BACKGROUND

A high rate of hospitalized patients for COVID-19 had dysphagia, frequently underdiagnosed, and not treated, inducing a prolonged dysphagia with protracted recovery. Specific treatments and protocols have not been well described yet.

AIM

Given the potential benefits of respiratory muscle training (IEMT) and neuromuscular stimulation (NMES) in dysphagia treatment, this study aimed to assess the feasibility of the protocol used for treating dysphagia in patients who experienced prolonged hospitalization for COVID-19.

DESIGN

Observational, descriptive, prospective study.

SETTING

Department of Physical Medicine and Rehabilitation of a tertiary University hospital.

POPULATION

Fifty-eight COVID-19 patients were admitted for intensive rehabilitation (March 2020 to October 2021) were prospectively studied.

METHODS

Dysphagia was diagnosed using videofluoroscopy and treated with a 3-week protocol adapted from neuromuscular stimulation (NMES) in a motor threshold and inspiratory/expiratory muscle strength training (IEMST), five sets of five repetitions three times daily for 3 weeks. Feasibility was assessed with adherence, outcomes achieved, and occurrence of adverse/unexpected events. Respiratory function (peak cough flow, maximal inspiratory/expiratory pressures) and swallow function (Penetration-Aspiration Scale and Bolus Residue Scale measured by videofluoroscopy) were recorded descriptive statistics, Student's t test for numerical data, and Wilcoxon Test for ordinal variables were applied. SPPSS vs28 and STATA version 15.1 (StataCorp, College Station, TX, USA) were used for statistical analysis. P values 0.05 were considered significant.

RESULTS

Dysphagia was highly prevalent in severe COVID-19 patients (86.6%); all respiratory and swallow parameters improved after a 3-week intervention and 12 of 18 patients dependent on tube feeding resumed a normal diet (66.7%; McNemar P=0.03), and 84.09% attended a no restriction diet at discharge. Adherence to treatment was 85%. No significant adverse events were detected.

CONCLUSIONS

We conclude that a structured swallowing-exercise training intervention based on IEMT and NMES is feasible and safe in prolonged hospitalization post-COVID patients.

CLINICAL REHABILITATION IMPACT

To describe rehabilitation protocols used to treat dysphagia in post-COVID patients will help us to optimize the available techniques in each center and to induce a faster recovery avoiding potential complications.

Contribution of Wireless Wi-Fi Intraoral Cameras to the Assessment of Swallowing Safety and Efficiency

BACKGROUND

Clinical evaluation of swallowing provides important clinical information but is limited in detecting penetration, aspiration, and pharyngeal residue in patients with suspected dysphagia. Although this is an old problem, there remains limited access to low-cost methods to evaluate swallowing safety and efficiency.

PURPOSE

The purpose of this technical report is to describe the experience of a single center that recently began using a wireless Wi-Fi intraoral camera for transoral endoscopic procedures as an adjunct to clinical swallowing evaluation. We describe the theoretical structure of this new clinical evaluation proposal. We present descriptive findings on its diagnostic performance in relation to videofluoroscopic swallowing study as the gold standard in a cohort of seven patients with dysphagia following head and neck cancer. We provide quantitative data on intra- and interrater reliability. Furthermore, this report discusses how this technology can be applied in the clinical practice of professionals who treat patients with dysphagia and provides directions for future research.

CONCLUSIONS

This preliminary retrospective study suggests that intraoral cameras can reveal the accumulated oropharyngeal secretions and postswallow pharyngolaryngeal residue in patients with suspected dysphagia. Future large-scale studies focusing on validating and exploring this contemporary low-cost technology as part of a clinical swallowing evaluation are warranted.

Exploring perceptions of factors aiding the development of critical thinking in adult dysphagia: A study among fourth-year speech-language pathology students

BACKGROUND

The assessment and management of adult dysphagia in South Africa is complex as appropriate intervention requires a balance of theoretical knowledge and critical thinking to ensure service delivery is appropriate within a resource-constrained health care system. Critical thinking involves the skilful evaluation of information to make informed decisions for effective assessment and intervention. It is imperative for Speech-Language Pathologists (SLPs) to cultivate these skills from an early stage in their careers. This study therefore aims to investigate the factors perceived to enhance critical thinking to shed light on how students transition theory into clinical decision-making. This is vital to inform future practice in the realm of dysphagia and to enhance Speech Therapy education.

METHODS

A qualitative research design was utilised to identify what facilitators assist SLP students to develop critical thinking skills in adult dysphagia. Data were gathered from students across three universities. Fifteen participants answered a self-developed online survey, and of those, four participated in a follow-up focus group. The data were analysed using a top-down approach and reflexive thematic analysis.

RESULTS AND DISCUSSION

The results revealed that viewing videos on instrumental assessment measures, case studies and peer learning were perceived to expand critical thinking theoretically. Similarly, critical thinking was best supported in clinical contexts, which provided opportunities to observe expert clinicians at the bedside, obtain individual feedback and access supervision.

CONCLUSION

The findings yielded recommendations for clinical educators involved in dysphagia training. This is necessary to better prepare SLP students to provide contextually relevant and responsive dysphagia services.

Hospital management of the patient with dysphagia. Survey and recommendations of SEEN nutrition area

INTRODUCTION

The prevalence of dysphagia in hospitalized patients is extraordinarily high and little known. The goal of care should be to assess the efficacy and safety of swallowing, to indicate personalized nutritional therapy. The development of Dysphagia Units, as a multidisciplinary team, facilitates comprehensive care for this type of patient.

MATERIAL AND METHODS

A observational, cross-sectional, web-based survey-type study, focused on Spanish Society of Endocrinology and Nutrition department heads, was conducted in September-October 2021. The following data were analyzed: size and type of center, existence of a dysphagia unit, dysphagia screening, dietary and nutritional therapy, education and training of professionals and patients, codification, and quality of life evaluation.

RESULTS

65 responses (39% of the total Endocrinology and Nutrition departments). 37% of hospitals have a Dysphagia Unit and 25% are developing it. 75.4% perform screening, with MECV-V in 80.6%, and VED (61.4%) and VFS (54.4%) are performed as main complementary tests. The centers have different models of oral diet, thickeners and nutritional oral supplements adapted to dysphagia. In 40% of the centers, no information is offered on dysphagia, nor on the use of thickeners, dysphagia is coded in 81%, 52.3% have specific nursing protocols and only 8% have scales for quality-of-life evaluation.

CONCLUSIONS

The high prevalence and the risk of serious complications require early and multidisciplinary management at the hospital level. The information received by the patient and caregiver about the dietary adaptations they need, is essential to minimize risks and improve quality of life.

Current opinion of presentation of dysphagia and dysphonia in patients with coronavirus disease 2019

PURPOSE OF REVIEW

Dysphagia and dysphonia are common presentations of both acute and long coronavirus disease 2019 (COVID-19). The majority of peer-reviewed publications in 2020 and early 2021 were expert guidance and consensus statements to support dysphagia management in multidisciplinary teams while protecting clinicians and patients from the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus. This review discusses dysphagia and dysphonia primary data published in 2021-2022, focusing on patient presentations, pathophysiology, and evidence for interventions.

RECENT FINDINGS

Clinicians and researchers amassed knowledge of the cross-system presentation of dysphagia and dysphonia in patients with COVID-19, from severe disease requiring ICU stays to those with mild-to-moderate disease presenting to outpatient clinics. Pre-COVID-19 health status, hospitalization experience, presence of neurological symptoms, and impact of the virus to the upper aerodigestive and respiratory system need consideration in patient management. Long-term dysphagia and dysphonia manifested from COVID-19 require otolaryngologist and speech-language pathologist input.

SUMMARY

Changes in immunity through population vaccination and variations in COVID-19 from SARS-CoV-2 mutations means prevalence data are challenging to interpret. However, there is no doubt of the presence of long-term dysphagia and dysphonia in our clinics. Long-term dysphagia and dysphonia are complex and a multidisciplinary team with a tailored approach for each patient is required.

An International Commentary on Dysphagia and Dysphonia During the COVID-19 Pandemic

COVID-19 has had an impact globally with millions infected, high mortality, significant economic ramifications, travel restrictions, national lockdowns, overloaded healthcare systems, effects on healthcare workers' health and well-being, and large amounts of funding diverted into rapid vaccine development and implementation. Patients with COVID-19, especially those who become severely ill, have frequently developed dysphagia and dysphonia. Health professionals working in the field have needed to learn about this new disease while managing these patients with enhanced personal protective equipment. Emerging research suggests differences in the clinical symptoms and journey to recovery for patients with COVID-19 in comparison to other intensive care populations. New insights from outpatient clinics also suggest distinct presentations of dysphagia and dysphonia in people after COVID-19 who were not hospitalized or severely ill. This international expert panel provides commentary on the impact of the pandemic on speech pathologists and our current understanding of dysphagia and dysphonia in patients with COVID-19, from acute illness to long-term recovery. This narrative review provides a unique, comprehensive critical appraisal of published peer-reviewed primary data as well as emerging previously unpublished, original primary data from across the globe, including clinical symptoms, trajectory, and prognosis. We conclude with our international expert opinion on what we have learnt and where we need to go next as this pandemic continues across the globe.

The neurogenic dysphagia management via telemedicine: a systematic review

INTRODUCTION

Telerehabilitation is the provision of rehabilitation remotely through Information and Communication Technologies (ICT). Recently, there has been an increase of interest in its application thanks to increasing a new technology. The aim of this systematic review was to examine the evidence of the literature regarding the management of neurogenic dysphagia via telerehabilitation, compared to face-to-face rehabilitation treatment. The secondary aim was to create recommendations on telerehabilitation sessions for patients diagnosed with neurogenic dysphagia.

EVIDENCE ACQUISITION

The databases were: Medline, Embase, CINAHL, Scopus. A total of 235 records emerged from bibliographic research, manual search of full text and from gray literature, published until January 2021. Two blinded authors carried out titles and abstract screening and followed by full-text analysis. Sixteen articles were included in the systematic review and assessed through critical appraisal tools.

EVIDENCE SYNTHESIS

The research shows that the majority of the studies on neurogenic dysphagia involved the Clinical Swallow Examination via telerehabilitation, compared with the in-person modality. Significant levels of agreement and high satisfaction from clinicians and patients are reported to support the use of telerehabilitation. Based on the results of this systematic review and qualitative analysis, the authors developed practical recommendations for the management of telerehabilitation sessions for patients with neurogenic dysphagia.

CONCLUSIONS

Despite the presence of barriers, telerehabilitation allowed healthcare provision and increasing access to care and services with specialized professionals, remote rehabilitation can be a valid resource during the health emergency due to COVID-19.

Considerations for speech and language therapy management of dysphagia in patients who are critically ill with COVID-19: a single centre case series

Background/Aims

Patients treated with intubation and tracheostomy for COVID-19 infection are at risk of increased incidence of laryngeal injury, dysphagia and dysphonia. Because of the novelty of the SARS-CoV-2 virus, little is known about the type of dysphagia patients experience as a result of infection and critical illness. The aim of this case series report was to progress understanding of COVID-19 and dysphagia following admission to an intensive care unit and to guide speech and language therapy clinical practice in the ongoing pandemic.

Methods

A retrospective case review was conducted of all patients at Imperial College Healthcare NHS Trust, London who underwent a tracheostomy because of COVID-19 and received an instrumental assessment of swallowing in the early stages of the pandemic.

Results

A total of 11 patients were identified, and descriptive statistics were used to present demographic data, with a narrative account of their dysphagia profile used to describe presentation. Causes and presentation of dysphagia were heterogenous, with each patient requiring individualised clinical management to maximise outcome. A positive trend was seen in terms of recovery trajectory and progressing to oral intake.

Conclusions

This study reports on early experience of the presentation of dysphagia in patients with COVID-19 and demonstrates the value of instrumental assessment. It indicates the need for further research to consolidate knowledge and guide clinical practice.

Providing rehabilitation to patients recovering from COVID-19: A scoping review

OBJECTIVE

To synthesize the nature and extent of research on rehabilitation care provision to patients with COVID-19. Specifically, we aimed to (1) describe the impact of COVID on patients and associated rehabilitation needs, (2) outline the adaptations and preparations required to enable the provision of COVID rehabilitation, (3) describe the types of rehabilitation services and treatments provided to COVID patients, and (4) identify barriers and facilitators to delivering COVID rehabilitation.

LITERATURE SURVEY

We searched Medline, PsychINFO, Embase, and CINAHL on June 26, 2020 using key words such as "rehabilitation," "physical medicine," "allied health professionals," and variations of "COVID." The search was updated on October 13, 2020. We included articles published in English and that focused on some aspect of COVID rehabilitation for adults. We excluded articles focused on pediatric populations and those not focused (or minimally focused) on rehabilitation for COVID patients.

METHODOLOGY

Data were charted based on article type (ie, primary data, secondary data, guidelines). Key information extracted included (1) COVID sequelae; (2) rehabilitation adaptations; (3) structure, function, and content of rehabilitation services/programs; (4) facilitators and/or barriers to providing COVID rehabilitation; and (5) recommendations for COVID rehabilitation programming. Data were synthesized narratively.

SYNTHESIS

In total, 128 articles were included in the review that reported primary data (n = 33), secondary data (n = 82), and clinical practice/patient self-management guidelines (n = 13). Evidence begins to suggest that rehabilitation is necessary and valuable for addressing COVID-related declines in health, function, and well-being. Most articles recommended that an individualized rehabilitation program be provided across the continuum of care by an interdisciplinary team of professionals and that the nature and extent of rehabilitation be informed by the care setting and COVID severity. Most issues that challenged COVID rehabilitation delivery were directly addressed by the facilitators and adaptations identified.

CONCLUSIONS

Future recommendations include a greater emphasis on the psychosocial aspects of COVID rehabilitation, inclusion of families in rehabilitation planning, and the use of qualitative approaches to complement clinical data.

Dysphagia management during COVID-19 pandemic: A review of the literature and international guidelines

In this review, we present the safest and most effective diagnosis and treatment approaches to dysphagia during the novel coronavirus-2019 (COVID-19) pandemic in the light of available data, relevant literature, and personal experiences. Evaluations for dysphagia patients should be based on clinical assessment during the COVID-19 pandemic and instrumental assessment should be planned for very few number of patients. The main approach to rehabilitation must depend on compensatory methods, texture-modified foods, and postural strategies. Direct treatment methods should be avoided and home-based exercise programs should be encouraged. It is also obvious that there is a need for the development of new strategies for telemedicine/telerehabilitation practices in the new world order.

Speech-language pathology approaches to neurorehabilitation in acute care during COVID-19: Capitalizing on neuroplasticity

Neurologic manifestations associated with a coronavirus disease 2019 (COVID‐19) diagnosis are common and often occur in severe and critically ill patients. In these patients, the neurologic symptoms are confounded by critical care conditions, such as acute respiratory distress syndrome (ARDS). Patients with dual diagnoses of COVID‐19 and neurologic changes such as myopathy, polyneuropathy, and stroke are likely at a higher risk of experiencing deficits with swallowing, communication, and/or cognition. Speech‐language pathologists are an integral part of both the critical care and neurologic disorders multi‐disciplinary teams, offering valuable contributions in the evaluation, treatment, and management of these areas. Patients in intensive care units (ICUs) who require mechanical ventilation often experience difficulty with communication and benefit from early speech‐language pathology intervention to identify the most efficient communication methods with the medical team and caregivers. Moreover, patients with neurologic manifestations may present with cognitive‐linguistic impairments such as aphasia, thereby increasing the need for communication‐based interventions. Difficulties with voice and swallowing after extubation are common, often requiring frequent treatment sessions, possibly persisting beyond ICU discharge. After leaving the ICU, patients with COVID‐19 often experience physical, cognitive, and mental health impairments collectively called post‐intensive care syndrome. This is often a lengthy road as they progress toward full recovery, requiring continued speech‐language pathology treatment after hospital discharge, capitalizing on the principles of neuroplasticity.

Recovery Focused Nutritional Therapy across the Continuum of Care: Learning from COVID-19

Targeted nutritional therapy should be started early in severe illness and sustained through to recovery if clinical and patient-centred outcomes are to be optimised. The coronavirus disease 2019 (COVID-19) pandemic has shone a light on this need. The literature on nutrition and COVID-19 mainly focuses on the importance of nutrition to preserve life and prevent clinical deterioration during the acute phase of illness. However, there is a lack of information guiding practice across the whole patient journey (e.g., hospital to home) with a focus on targeting recovery (e.g., long COVID). This review paper is of relevance to doctors and other healthcare professionals in acute care and primary care worldwide, since it addresses early, multi-modal individualised nutrition interventions across the continuum of care to improve COVID-19 patient outcomes. It is of relevance to nutrition experts and non-nutrition experts and can be used to promote inter-professional and inter-organisational knowledge transfer on the topic. The primary goal is to prevent complications and support recovery to enable COVID-19 patients to achieve the best possible nutritional, physical, functional and mental health status and to apply the learning to date from the COVID-19 pandemic to other patient groups experiencing acute severe illness.

Aerosol-generating behaviours in speech pathology clinical practice: A systematic literature review

OBJECTIVE

To evaluate the evidence of aerosol generation across tasks involved in voice and speech assessment and intervention, to inform better management and to reduce transmission risk of such diseases as COVID-19 in healthcare settings and the wider community.

DESIGN

Systematic literature review.

DATA SOURCES AND ELIGIBILITY

Medline, Embase, Scopus, Web of Science, CINAHL, PubMed Central and grey literature through ProQuest, The Centre for Evidence-Based Medicine, COVID-Evidence and speech pathology national bodies were searched up until August 13th, 2020 for articles examining the aerosol-generating activities in clinical voice and speech assessment and intervention within speech pathology.

RESULTS

Of the 8288 results found, 39 studies were included for data extraction and analysis. Included articles were classified into one of three categories: research studies, review articles or clinical guidelines. Data extraction followed appropriate protocols depending on the classification of each article (e.g. PRISMA for review articles). Articles were assessed for risk of bias and certainty of evidence using the GRADE system. Six behaviours were identified as aerosol generating. These were classified into three categories: vegetative acts (coughing, breathing), verbal communication activities of daily living (speaking, loud voicing), and performance-based tasks (singing, sustained phonation). Certainty of evidence ranged from very low to moderate with variation in research design and variables.

CONCLUSIONS

This body of literature helped to both identify and categorise the aerosol-generating behaviours involved in speech pathology clinical practice and confirm the low level of evidence throughout the speech pathology literature pertaining to aerosol generation. As many aerosol-generating behaviours are common human behaviours, these findings can be applied across healthcare and community settings.

SYSTEMATIC REVIEW REGISTRATION

Registration number CRD42020186902 with PROSPERO International Prospective Register for Systematic Reviews.