Journal/Magazine Articles
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This collection contains original research articles, review articles and case reports published in local and international peer reviewed journals by the staff members of the Faculty of Medicine
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Item Exploring clinical reasoning in child language assessment through decoloniality(Taylor & Francis Group, 2024) Samaraweera, B.P.; Pillay, M.; Muttiah, N.; Moodley, L.PURPOSE: Clinical reasoning has been taught, practised, and researched under Western epistemologies, which have been fallible in addressing the complexity of clinical reasoning within Indigenous cultures and societies. We explored how speech-language pathologists in Sri Lanka negotiate and value Indigenous and Western perspectives in clinical reasoning within a decolonial framework. METHOD: This study used participatory research methodology within the decolonised qualitative research paradigm to produce data collaboratively with eight Sri Lankan speech-language pathologists. Oral history narratives and object-based textual reflections generated the necessary data for the study. Systematic visual-textual analysis and reflexive thematic analysis were carried out iteratively, and the data analysis and interpretation were undertaken collaboratively with the participants. RESULT: We generated four key themes about professional education, individuality in practice, holistic thinking, and balancing interests and priorities. The results demonstrate that social, political, and economic forces impact practitioners' clinical reasoning. CONCLUSION: Practising science in its original form within Indigenous contexts is challenging. Colonial roots and imperialism impact the delivery of appropriate services in socially and politically marginalised communities. Practitioners' self-awareness about authentic identities and practical wisdom can develop culturally relevant knowledge for equitable practice.Item Availability of rehabilitation services for communication disorders in Sri Lanka: a cross-sectional survey(BMJ Publishing Group Ltd, 2023) Caldera, A.V.; Wickremasinghe, R.; Munasinghe, T.U.; Perera, K.M.N.; Muttiah, N.; Tilakarathne, D.; Peiris, M.K.R.R.; Thamilchelvan, E.; Sooriyaarachchi, C.; Nasma, M.N.; Manamperige, R.M.; Ariyasena, A.D.K.; Sumanasena, S.P.OBJECTIVES: To describe the rehabilitation services available for communication disorders in Sri Lanka and to estimate the adequacy of the services in provinces and districts of the country. SETTING: The study considered government and private institutions, which provide rehabilitation services for communication disorders in Sri Lanka. PARTICIPANTS: Institutions providing services of speech-language pathologists, audiologists and audiology technicians in Sri Lanka. PRIMARY AND SECONDARY OUTCOME MEASURES: We investigated the number of government hospitals and private institutions, which provide speech-language pathology and audiology services in Sri Lanka as the primary outcome measure. A number of speech-language pathologists, audiologists and audiology technicians working in the institutions were obtained from records and institution-based inquiries to identify the adequacy of the services in the country as the secondary outcome measure. RESULTS: Of the 647 government hospitals that provide free healthcare services in the country, 45 and 33 hospitals had speech and language therapy and audiology units, respectively. Government hospitals do not have audiologists but only have audiology technicians. The number of speech and language therapists and audiology technicians in the government sector per 100 000 population in the country was 0.44 and 0.18, respectively. There were wide variations in specialist to population ratio between districts. 77 private centres provide speech therapy services in 15 out of the 25 districts; 36 private centres provide audiological evaluations in 9 districts. CONCLUSIONS: The number of specialist speech and language therapists and audiologists is not sufficient to provide adequate rehabilitation services for communications disorder for the Sri Lankan population. Not recruiting audiologists to the government sector affects the management of hearing impairment in the affected.Item REACh for the preschoolers; a developmental assessment tool for 2-5 year old children in Sri Lanka(BioMed Central, 2023) Caldera, A.V.; Wickremasinghe, A.R.; Muttiah, N.; Godamunne, P.K.S.; Jayasena, B.N.; Chathurika, L.K.E.; Perera, K.M.N.; Mendis, M.; Tilakarathne, D.; Peiris, M.K.R.R.; Wijesinghe, T.; Senarathna, N.E.; Saubhagya, W.D.L.; Chandraratne, M.; Sumanasena, S.P.BACKGROUND: Preschool children in low resource settings are at higher risk of missing developmental potential due to the lack of standardized and validated methods for the timely detection of children with developmental delays or neurodevelopmental disorders. The preschool teacher is a non-specialist resourceful link within the community to detect and offer interventions early. This paper discusses the preliminary iteration of designing and testing the psychometric properties of a developmental assessment for children aged 24 to 60 months in Sri Lanka. This assessment is designed to be conducted by preschool teachers in their preschool setting. METHODS: Three processes followed: 1. Designing and development of the Ragama Early Assessment for Children (REACh) complete preschool developmental assessment and a tool kit 2. Testing and training teachers on conducting the REACh assessment 3. Preliminary assessment of the psychometric properties including content validity, internal consistency, interrater reliability and concurrent validity. RESULTS: A literature search identified 11 assessments and 542 items representing cognitive, social-emotional and adaptive, language and motor domains. Content validity was assessed to select and adapt items. A complete assessment tool was designed to be administered in four settings within the preschool. This was further improved during pre and pilot testing and teacher training. Cronbach's alpha measuring internal consistency was > 0.70 for cognitive, language, social-emotional and adaptive domains across all three age groups in 1809 children. Interrater reliability was > 65% for age groups 36-47 and 47- 60 months. Concurrent validity using a clinical gold standard demonstrated sensitivity of more than 0.75 for all age groups with variable specificities (24-35 months: 0.71, 36- 47 months: 0.43 and 48-60 months: 0.67) assessed in 75 children. CONCLUSIONS: This culturally and linguistically adapted tool was tested nationally in Sri Lanka. The inte-rrater reliability between teachers and research assistants was higher than 65% for all domains in children more than 36 months. The preliminary iteration confirms it as an acceptable screening assessment for all age groups but with significantly lower specificity in the 36-47 month age group. Further improvement in certain domains together with intense teacher training is likely to enhance the validity and reliability of the assessment.Item Parent perspectives on augmentative and alternative communication in Sri Lanka(Williams and Wilkins, 2022) Muttiah, N.; Seneviratne, A.; Drager, K.D.R.; Panterliyon, N.A.Parental support is an important part of introducing an augmentative and alternative communication (AAC) system to a child. Professionals providing AAC services to children with complex communication needs should practice family-centered service provision. The aim of this study was to explore Sri Lankan parents' perspectives on AAC and their lived experiences. Semi-structured interviews were conducted with 10 parents of children with complex communication needs. Thematic analysis was used to analyze the findings, with the following themes identified: (a) External Systems, (b) Impact on the Family, (c) Impact on the Child, and (d) Communication (including AAC). Findings from this study provide important information for speech-language therapists providing services to families from low- and middle-income countries. In particular, parents reported several positive aspects of AAC. However, parents also reported challenges, including speech-language therapist's lack of knowledge of and training in AAC.Item A scoping review of Augmentative and Alternative Communication (AAC) interventions in Low-and Middle-Income Countries (LMICs).(Taylor & Francis, 2022) Muttiah, N.; Gormley, J.; Drager, K.D.R.Currently, a small number of studies discuss augmentative and alternative (AAC) interventions in low- and middle-income countries (LMICs). The primary purpose of this scoping review was to summarize the current evidence base on communication-based interventions and partner training in LMICs, to explore and identify gaps in the AAC evidence base and guide future research. A total of 18 studies were identified. The results revealed many positive outcomes arising from AAC interventions, including increased communication, improved participation, increased knowledge about communication, and increased use of partner communication strategies, thus adding to the evidence base that AAC can be successfully implemented in LMICs. However, these studies did not broadly represent most LMICs and there were only a handful of indirect intervention studies training communication partners. To this end, there is an urgent need to expand the level of AAC intervention research conducted in LMICs in order to better serve individuals with complex communication needs living in these countries.Item Ground realities of autism spectrum disorders in Sri Lanka(Ubiquity Press., 2021) Muttiah, N.ABSTRACT: Autism spectrum disorders (ASD) are a group of developmental disabilities that impact children and adults globally. The majority of children diagnosed with ASD live in low- and middle-income countries (LMICs). There is, however, inadequate understanding of the prevalence, screening, diagnosis and treatment for these children in LMICs. As most of the current evidence comes from high-income countries, this narrative review will focus specifically on children with ASD living in Sri Lanka, a lower-middle-income country. It will discuss the prevalence of ASD, current screening and diagnostic assessments, and services available for these children, with a focus on speech therapy and augmentative and alternative communication (AAC). KEYWORDS: Autism spectrum disorders, low- and middle-income countries, augmentative and alternative communication, Avaz Sri LankaItem Protocol for the Sri Lankan Cerebral Palsy Register pilot study(BMJ Publishing Group Ltd., 2020) Heiyanthuduwage, T.M.; Sumanasena, S.P.; Kitnasamy, G.; Sheedy, H. S.; Khandaker, G.; Fernando, R.; Wijesekara, S.; Jagoda, J.; Ratnayake, P.; Wanigasinghe, J.; Mclntyre, S.; Goldsmith, S.; Waight, E.; Badawi, N.; Muhit, M.; Muttiah, N.INTRODUCTION: Cerebral palsy (CP) describes a heterogeneous group of motor disorders resulting from disturbance in the developing brain. CP occurs in approximately 2.1 per 1000 live births in high-income countries, but in low- and middle-income countries (LMICs) the prevalence and severity of CP may be greater and aetiological risk factors different. In Sri Lanka, a LMIC, there have been no epidemiological studies of CP to date. Systematically collected data are required to identify opportunities for primary and secondary prevention, to plan and establish services to support children and adults with CP and their families and to act as a sampling frame for new research. Here we describe a pilot study protocol for a CP register in Sri Lanka. METHODS AND ANALYSIS: The aim of this study is to establish a CP register in Sri Lanka. We will use different surveillance methodologies in two provinces of Sri Lanka: hospital and community surveillance in the Western Province and community surveillance in the Eastern Province. A common record form will collect demographic, clinical and service data for children with CP <18 years living in these two provinces. Data will be transferred to a secure online data repository and used to describe the epidemiology of CP in these regions. We will describe the strengths and challenges of the surveillance mechanisms and estimate the resources required for ongoing hospital and community based surveillance in the Western and Eastern provinces and to include additional provinces across the country. ETHICS AND DISSEMINATION: This study has ethical clearance from The University of Kelaniya, National Health Research Council, the Institutional Ethics Review Committee of the Lady Ridgeway Hospital, Colombo South Teaching Hospital and the Director of the North Colombo Teaching Hospital. Results from this research will be disseminated through local and international conferences and through publications in peer-reviewed journals. KEYWORDS: developmental neurology & neurodisability; perinatology; public health; rehabilitation medicine.Item The Effects of an intervention using Low-Tech visual scene displays and aided modeling with young children with complex communication needs(Sage Publishing, 2022) Muttiah, N.; Drager, K.D.R.; Beale, B.; Bongo, H.; Riley, L.Young children with complex communication needs are often severely restricted in their ability to communicate and develop language skills. A major barrier preventing these children from accessing communication is a lack of appropriate means to communicate. The present study investigated the implementation of nonelectronic visual scene displays (VSDs) as an augmentative and alternative communication (AAC) tool, in combination with aided modeling with preschool children with complex communication needs. A single case, multiple probe design across participants was used to evaluate an intervention combining low-tech VSDs and aided modeling to increase the number of communication turns and unique semantic concepts expressed by preschool children. All children demonstrated notable increases in the number of communication turns and unique semantic concepts expressed. The findings of this study indicate preliminary positive results for a novel, low-cost AAC intervention that could be useful for preschool children to increase their participation in social communication contextsItem Evaluating an AAC training for special education teachers in Sri Lanka,a low- and middle-income country.(Taylor & Francis, 2018) Muttiah, N.; Drager, K. D. R.; McNaughton, D.; Perera, N.A majority of people with disabilities live in low- and middle-income countries where communication services for individuals with complex communication needs are scarce. It is essential that communication partners of individuals who have complex communication needs receive training to support communication. To address this issue, the current study evaluated an augmentative and alternative communication training for special education teachers living in a low- and middle-income country, Sri Lanka. The training was based on four key practices identified when training in low- and middle-income countries: investigate learner needs, provide contextually relevant instructional content, use engaging instructional activities, and assess the impact of instructional activities. This investigation implemented an interrupted time-series design with nine teacher-student dyads. Special education teachers were taught to provide evocative communication opportunities. Following the training, all nine special education teachers significantly increased the number of evocative communication opportunities provided to students with complex communication needs. Additionally, all nine students with complex communication needs significantly increased their number of communication turns.