Faculty of Health Sciences (ETDs)

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Start date: 2021Subject: search.filters.subject.South Africa

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    Voiding cystourethrography in the renal pre-transplantation workup: an essential investigation?
    (University of the Witwatersrand, Johannesburg, 2022-10) Sofianos, Zelia; Rajkumar, Leisha; Lucas, Susan
    INTRODUCTION: Due to resource constraints in the South African public healthcare sector, patients with End-Stage Renal Disease (ESRD) are eligible for renal replacement therapy only if they are also found to be eligible for renal transplant. AIM: The aim of this study is to document Voiding Cystourethrogram (VCUG) findings in potential renal transplant candidates to assess the contribution of the VCUG as a standard investigation in the renal transplant workup. METHODS: Of the patients who underwent VCUG in Klerksdorp/Tshepong Hospital Complex (North West province, South Africa) from 1 January 2019 to 31 March 2020, 85 patients were included in the study and their VCUG findings retrospectively analysed. RESULTS: The mean age was 40.0 years (range 21-62 years), with males constituting 57.7% of patients and females 42.3%. Lower urinary tract abnormalities were identified in 24.7% of patients, some of whom had more than one abnormality. Of the total abnormalities, VUR (vesicoureteral reflux) accounted for 15.3%, bladder diverticula for 5.9%, urethral strictures for 3.5% and a significant post-void residual volume for 4.7%. No comorbidities were found to have a statistically significant association with the presence of VCUG abnormalities. CONCLUSIONS: To ensure that patients with End-Stage Renal Disease are adequately prepared for renal dialysis and potential renal transplant, and that their comorbidities and lower urinary tract are optimised should abnormalities be identified on VCUG, the VCUG remains an essential investigation in the renal transplant workup.
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    Maternal death at Leratong Regional Hospital: a six-year retrospective review, South Africa
    (University of the Witwatersrand, Johannesburg, 2021-11) Motau, Tumelo Ngaka; Chauke, Lawrence
    Background: The aim of the study was to systematically examine the main causes of maternal deaths and contributing factors at Leratong Regional Hospital in order to recommend strategies that can assist in reducing maternal mortality at this level of healthcare. Objectives: The objectives of the study were to: determine the institutional maternal mortality rate at Leratong Regional Hospital between 2012 to 2017, compare the trend (year on year) in the iMMR over the study period, describe the profile of women who died during the period under study, describe the clinical and surgical management of the women who died, and to determine the leading causes of maternal deaths, contributing factors and avoidable factors. Methods: A hospital based retrospective study based on patient clinical records at Leratong hospital. It included all the maternal deaths that occurred at Leratong Regional Hospital during the six-year study period (2012-2017). Results: There was a total of 78 maternal deaths with 32441 live births giving the MMR of 240 per 100 000 live births. However only 74 files could be analysed. The results showed that there was a rise in the maternal mortality rate over a six years period. The majority (70, 94.5%) of the women who died were African, aged between 20-35 years (56, 76%), multigravida (54,73%) with a parity of three or more (23, 31%). Obstetric haemorrhage was the leading cause of maternal death particularly postpartum haemorrhage (11.14%) followed by non-pregnancy related infections, sepsis and eclampsia. Conclusion: Maternal mortality has decreased according to recent confidential enquiry into maternal death in South Africa (2017-2019) However our study did not demonstrate a decline but rather an increase in the maternal mortality rate at Leratong. It showed that most of the maternal deaths were avoidable and the need for urgent interventions in terms of education, improving access to health care facilities, intensifying health care worker skills training and better transport systems between health care facilities is important.
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    Adherence to the Standard Treatment Guidelines in managing patients with hypertension at Chiawelo Community Health Centre, Gauteng, South Africa
    (University of the Witwatersrand, Johannesburg, 2022-04) Dawduth, Nikkeeta; Torlutter, Michele
    Background: Hypertension is a highly prevalent chronic disease, causing significant morbidity and mortality and is poorly managed and controlled in primary care, with only 24.5 to 56% of patients being controlled. Aim: The aim of the study was to determine health care worker adherence to the Standard Treatment Guidelines in managing hypertensive patients in primary care. Methods: The study was conducted at Chiawelo Community Practice Johannesburg. A retrospective file review was done on 261 hypertensive patients and information extracted to determine whether health care workers performed correct baseline tests at diagnosis; correct investigations were done on ongoing basis; lifestyle modification was addressed; and correct pharmacological therapy was prescribed and titrated. Data analysis included descriptive statistics and bivariate analysis. Results: A total of 77% of participants were female and 23% were male of which 80.5% participants had co-morbidities. Patients were treated by a doctor in 97% of cases; 84.3% by clinical associate, and 0.6% by a nurse only over time. Baseline findings recorded in the file at diagnosis were: weight 65.9%, height 73.2%, potassium 32.2%, BMI 50.2%, abdominal circumference 51.7%, and urine dipsticks 47.9%. Vitals and investigations recorded in the file: BP 99.6%, weight 19.5%, blood glucose 86.6%, creatinine 95.4%, eGFR 94.3% and urine protein 3.4%. Lifestyle modification was recorded for 23.7% and medication adherence was checked and recorded for 36.4% of patients. The correct antihypertensive medications were prescribed in 96.5% of patients but titrated correctly in only 73.5% of patients. 52.8% of patients were controlled on treatment. Conclusion: Adherence to guidelines by health care workers was suboptimal and several aspects of care warrants quality improvement processes.
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    COVID-19 and health care worker exposure at Chris Hani Baragwanath Academic Hospital
    (University of the Witwatersrand, Johannesburg, 2021-12-05) Glatt, Sara Chaya; Menezes, Colin; Winchow, Lai ling; Tsitsi, Merika
    Background: Health care workers (HCWs) are at an increased risk of acquiring coronavirus disease 2019 (COVID-19). Appropriate risk assessments and testing are essential to reduce transmission and avoid workforce depletion. Objective: Investigate the risk of COVID-19 infection among HCWs at Chris Hani Baragwanath Academic Hospital who fulfil the Person Under Investigation (PUI) case definition or had exposure to a confirmed COVID-19 contact. Methods: A retrospective review of HCW records was conducted over a two month period. Data collected included demographics, exposure type, risk level, and COVID-19 test result. Frequency distribution tables, bivariate analyses and univariate and multivariate analyses were conducted. Results: Among the 1111 HCWs reviewed, 643 were tested with 35.6% positive results. PUI’s accounted for 62.4% of positive cases. Symptomatic HCWs with no known contact were at a greater risk of infection than those with a patient exposure (p=0.000). Risk of testing positive was higher after a patient exposure (p=0.000) compared to a co-worker contact. Conclusion: There is a higher positivity rate among HCWs than the general population. The presence of symptoms warrants testing. Nosocomial transmission was derived from patient more than co-worker contacts.
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    Non-tuberculous mycobacteria (NTM) at Charlotte Maxeke Academic Hospital, 2010-2017
    (University of the Witwatersrand, Johannesburg, 2023-11) Nqwata, Lamla; Feldman, Charles; Black, Marianne
    Rationale: Diseases due to non-tuberculous mycobacteria (NTM) are difficult to diagnose and are not reportable in South Africa (SA), resulting in the disease burden and trends being under-appreciated. Objectives: To characterize NTM disease occurrence and trends in Johannesburg and to estimate end-of-treatment outcomes. Methods: A retrospective review of all clinical isolates that were positive for NTMs between 1 January 2010 and 30 June 2017 and the corresponding medical records of the patients at Charlotte Maxeke Johannesburg Academic Hospital (CMJAH) were analysed. A data collection form was designed, and data was collected based on information listed on the form. This was analysed using Graphpad Instat (Graphpad Inc, 3.1 version, San Diego, California, US) and STATA version 11, College Station, Texas, software. In descriptive analyses, two-tailed Fisher’s exact tests were used to compare categorical variables, while Kruskal-Wallis tests and Student’s T-test were used to compare continuous variables, as needed. Kaplan-Meier curves and log-rank tests were used to compare time-to-death, while Cox regression analyses were used in multivariate analyses of the same. Results: A total of 123 patients with positive NTM isolates were enrolled in this study. In this cohort, positive NTM isolates were found mostly in males (71; 57,7%), with a median age of 39 [Interquartile range 31.5-49.5] years. Mycobacteria avium complex (MAC) was the most common, isolated in 90 (75%) cases. Human immunodeficiency virus (HIV) infection, found in 96(80%) patients, and prior pulmonary tuberculosis (TB), found in 38(30%), were the common comorbidities. Overall, 27(22%) were successfully treated and 28(23%) died. In multivariate Cox regression analysis the adjusted hazard rates were 2.79 (95%CI 1.20 – 6.50) in those with low CD4 cell counts and 4.01 (95%CI 1.17 – 13.77) in those with unknown HIV test results. Receipt of antimicrobials did not significantly improve survival. Conclusion: Non-tuberculous mycobacteria (NTM) appear to be common in our setting and is associated with poor outcomes.
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    Public attitudes to corneal tissue donation in an urban South African population
    (University of the Witwatersrand, Johannesburg, 2023-08) Hajee, Faheema; Hollhumer, Roland
    Background: Corneal pathology is the second leading cause of preventable blindness in Sub-Saharan Africa. Corneal disease is the cause of visual loss in 11% of blind or severely visually impaired children and 4% of blind adults in South Africa. In majority of cases, a corneal transplant or keratoplasty can restore or significantly improve vision. South Africa has an immense shortage of donor corneas, causing the burden of corneal disease requiring transplantation to continually rise. Aim: The aim of this study was to determine the public attitude towards corneal tissue donation in an urban South African population. Setting: The study was conducted at St John’s Eye Hospital, Soweto, South Africa. Method and Design: This was an observational, cross-sectional quantitative study of the current attitude of an urban South African population towards corneal tissue donation. A self-designed questionnaire was developed. The participants were asked about reasons for both willingness and unwillingness to donate their corneas. The study population included patients or escorts attending the out-patients clinic at Saint John’s Eye Hospital. Results: A total of 100 participants (60 females and 40 males) completed the questionnaire. The mean age (±SD) of the study participants was 41.26 (±14.7) years. Seventy-six percent of participants did not know about corneal donation. Sixty four percent of participants were willing to donate their corneas, whereas 25% were not willing to do so. The main reason for unwillingness to donate their corneas was cultural reasons. In this study there was no statistically significant correlation between the willingness to donate corneal tissue and age, gender, level of education and employment status. There was a statistically significant difference between the willingness to donate one’s solid organs as compared to the willingness to donate one’s cornea (p-value 0.029). Participants were more willing to donate their solid organs than they were willing to donate their corneas. Conclusion: There is a decreased level of awareness of corneal tissue donation in this urban South African population. However, many of the participants had a positive attitude towards corneal donations. Increasing the awareness of donation and its benefits may help increase the supply of corneal tissue.
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    Final-year medical students' experiences and perceptions of integrated primary care learning at decentralised training sites during the COVID-19 pandemic: A mixed-methods study
    (University of the Witwatersrand, Johannesburg, 2023-09) Ruch, Aviva; George, Ann; Francis, Joel
    Background: There is limited data on the effectiveness of online learning to augment theory and clinical knowledge and skills across decentralised training (DCT) sites. This study explored the 2021 cohort of final-year medical students’ experiences and perceptions of the integrated primary care (IPC) online teaching and learning across five DCT sites affiliated with the University of the Witwatersrand in South Africa. This information is essential to determine what online IPC teaching and learning should be retained and what adjustments are needed to enhance and standardise IPC online learning across our DCT sites. IPC is a final-year Bachelor of Medicine and Bachelor of Surgery (MBBCH) subject at Wits University. The subject focuses on primary health care, integrating Internal Medicine, Surgery, Psychiatry, Obstetrics and Gynaecology, Family Medicine, Community Paediatrics and Public Health. Training across different sites poses challenges for standardising learning content and the nature and quality of patient engagement and interaction. The Covid-19 pandemic not only exacerbated the difficulties associated with decentralised teaching and learning, but also decreased student-patient interaction. The rapid shift to emergency remote teaching left teachers with limited time to prepare for online and blended teaching and highlighted shortcomings in some health-professions educators’ ability to create meaningful, authentic learning interactions. The study design was underpinned by the Technology Acceptance Model, the Community of Inquiry Model and the Theory of Self-Regulated Learning. Methods: This explanatory sequential mixed-methods design consisted of a cross-sectional online survey conducted in November 2021, followed by two focus-group discussions in December 2021. The 316 final-year medical students who had completed their IPC block were purposively sampled to participate in this study. Medical students who had not yet completed the IPC block were excluded from the study. Twenty-one closed and four open-ended questions explored the students’ perceptions of how the online materials supported their learning and augmented their clinical skills and management of patients, their challenges with learning online, and ways to improve the online-learning experience. The closed and open-ended survey answers were analysed using descriptive and inferential statistics and content analysis, respectively. The results of the content analysis are presented graphically. The survey findings informed the questions asked in the focus-group discussions (n = 2 and n = 3). The discussions were audio-recorded and transcribed verbatim. The transcripts were analysed inductively in MAXQDA. The findings are presented as thematic maps. Results: The survey response rate was 52% (164/316). The respondents were representative of the study population. Most respondents easily accessed the online content, with more than 70% accessing the online content several times a week. More than 80% found the online content logically organised; the content analysis highlighted three categories of reasons why the online content and interactions influenced their learning. The content analysis also identified three categories of reasons why the online content influenced patient management, but more than a third of respondents remained neutral when asked if the online content introduced them to new clinical skills. Quizzes and tests were the preferred learning method. The features that best supported the respondents’ online learning were grouped into five categories: ‘Range of activities’ (n = 73), ‘Content selection’ (n = 56), ‘Flexible access to content’ (n = 8), ‘Organisation of content’ (n = 4) and ‘Other’ features (n = 7). Respondents highlighted several categories that presented challenges to online learning: ‘Pedagogical issues’ (n = 30), ‘Excessive workload’ (n = 27), ‘Operational issues’ (n = 20), ‘Learning issues’ (n = 17), ‘Technical issues’ (n = 11) and ‘Unclear course expectations’ (n = 50). Participants in the focus-group discussions (FGD) concurred with many of the perceptions and experiences of the questionnaire respondents. Three themes were identified in the thematic analysis of the FGD: ‘Features supporting learning’, ‘Challenges of learning online’, and ‘Ways to improve learning’. Conclusions: The respondents and focus-group participants displayed a positive attitude to the IPC online content and interactions offered to them during the Covid-19 pandemic. Their experiences and perceptions offered insights to better support learning through practical suggestions for students and faculty, especially around faculty competency to design meaningful learning interactions, both online and blended. While this study focused on IPC, the student recommendations may apply to other subjects nationally and internationally, suggesting the need for further research into using online teaching to support clinical teaching.
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    The patterns and distribution of maxillofacial fractures at Pelonomi hospital
    (University of the Witwatersrand, Johannesburg, 2023-10) Mvala, Boyisile Stephen; Rikhotso, Risimati Ephraim
    Background: Despite large volumes of trauma patients treated, no study has analysed the epidemiology of craniofacial trauma at Pelonomi Hospital. Such studies could provide insight into the aetiologies and treatment modalities of maxillofacial injuries; and allow for development of strategies to ensure efficient and optimal utilization of limited health resources. Aim: To analyse the patterns and distribution of maxillofacial fractures at Pelonomi Hospital (PH). Methods: We designed and implemented a retrospective, descriptive cross-sectional study whose sample consisted of patients treated for maxillofacial fractures at PH, Frees State, South Africa, between January 1, 2017, and December 31, 2019. Data was collected from the patient’s clinical and radiographic records. Variables recorded included demographic data (gender, age), aetiology of the trauma, type of fractures and type of treatment provided. The delay in treatment was determined from date of injury to the day of treatment. The referral letters were assessed to determine district from which the patients were referred. Descriptive statistics of frequency and percentage were used to analyse the data. Fischer’s exact test was used to determine the association between the independent and dependent variables. The level of significance was set at a p-value less than 0.05. Results: A total of 307 patients with craniofacial fractures were included in the study. Females constituted 21.8% (n=67) and males were by far the majority of the participants at 78.2% (n=240). Individuals in the 20-29 age group had the most maxillofacial fractures (41.2%) and majority of patients in the study were Black (81.1%). The major cause of these injuries was interpersonal violence (60.9%). Alcohol contributed in 64.50% of the injuries. The most frequent fracture was a mandible fracture (70.7%). Majority of fractures in the study were treated with closed reduction (52%) and the waiting period prior to treatment was found to be 2 weeks. Conclusion: Blunt trauma sustained under the influence of alcohol in young individuals is responsible for majority of maxillofacial fractures at Pelonomi Hospital. Future prospective studies with large patient numbers and post treatment follow up are recommended.
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    Adolescent health in rural South Africa: building an evidence-base to inform a health promotion intervention supporting healthier lifestyles
    (University of the Witwatersrand, Johannesburg, 2024) Seabi, Tshegofatso Martha; Kahn, Kathleen; Wagner, Ryan G
    Background Low- and middle-income countries (LMICs), including South Africa, face the persisting double burden of malnutrition, with undernutrition and overnutrition coexisting within the population. This issue is particularly pronounced among rural adolescents, who experience limited access to healthcare services, inadequate infrastructure, poverty, and a scarcity of nutritious foods. Addressing this double burden of malnutrition is essential for improving the health outcomes of rural adolescents and breaking the intergenerational cycle of malnutrition. Community health worker-led interventions have shown promise in promoting healthier lifestyles in this population, making it crucial to understand the feasibility and acceptability of such interventions. Aim This thesis aims to provide context-specific information on the changing distribution of Body Mass Index (BMI) and views on obesity among rural South African adolescents to inform the development of a targeted behaviour change intervention. Furthermore, it seeks to determine the feasibility, acceptability, and overall experience of implementing a complex intervention aimed at promoting healthier lifestyles in this population. Methods Using a mixed methods approach focusing on adolescents 12-20 years of age living in rural South Africa. This work is nested within the MRC/Wits rural public health and health transitions research unit (Agincourt) Health and Demographic Surveillance System, which is where the sample was drawn and provided explanatory variables such as SES. This work includes data from two studies with comparable measures, conducted in 2007 (n= 1309) and in 2018 (n=518), this study analysed comprehensive data on the prevalence and trends of BMI, including both undernutrition and overweight/obesity, among rural adolescents in 2007 and 2018. This was done through weight and height measures. Growth z-scores were used to determine stunting, underweight and overweight and overweight/obesity was generated using the 2007 WHO growth standards for adolescents aged up to 17 years and adult cut-offs of BMI of <=18.5 for underweight and =>30 kg/m2 for overweight and obese respectively for adolescents 18 to 20 years. Qualitative data was collected in the form of focus group discussions and in-depth interviews. Pre-intervention, three focus group discussions were held with male (n = 16) and female adolescents (n = 15) focusing on obesity to capture views, attitudes and perceptions surrounding obesity. Post-interventions, six focus group discussions were held with male and female adolescents. In-depth interviews were conducted with adolescents (n=20), parents (n=5) and CHWs (n=3), focusing on the feasibility and acceptability of the health promotion intervention. All qualitative data were analysed using inductive thematic analysis. Results This study found that there is a persistent double burden of malnutrition amongst rural adolescents. The pattern of underweight and overweight/obesity remains similar between 2007 and 2018, with an increase in overweight and obesity, and a decrease in underweight observed across different age and gender groups throughout this period. The prevalence of stunting and underweight, particularly in males in both 2007 and 2018 was substantial although lower in the later year. Adolescents expressed conflicting views of obesity, highlighting their knowledge of the cause and long-term consequences of obesity. In regard to the intervention, participants expressed support for the CHWs and the community-based intervention guided by them. The findings demonstrated the feasibility of providing the intervention to adolescents in a rural context, with modifications needed to ensure participant uptake, such as changes to the time and location. Responses from participants show how the intervention, which included dietary and quantity modifications, was acceptable to adolescents. The gathered information in this study serves as a foundation for developing a health promotion intervention tailored to the specific needs and circumstances of rural adolescents, considering both undernutrition and overweight and obesity. Conclusion This research provides valuable context-specific insights into the burden of malnutrition and perceptions of obesity among rural South African adolescents, considering the complexities of the double burden of malnutrition. The findings contribute to the development of tailored health promotion interventions that address both undernutrition and overweight/obesity in this population. Understanding the feasibility and acceptability of such interventions is vital for successful implementation and sustainability in rural communities.
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    Attrition in the dental therapy profession: an exploration of the contributing factors
    (University of the Witwatersrand, Johannesburg, 2024) Sodo, Pumla Pamella; Jewett, Sara
    Background: A new type of oral health profession called dental therapy was introduced to address the growing need for affordable and accessible oral healthcare services, especially among marginalised communities. Extensive global research has demonstrated that dental therapists provide cost-effective and high-quality services, effectively addressing the issue of limited access to basic oral health services. The introduction of dental therapy into the South African healthcare system took place in 1977, however, disparities in accessing basic oral healthcare persist, particularly among some population groups where the highest prevalence of oral diseases has been reported. Despite being established over four decades ago, the number of registered dental therapists remains low, and there have been reports of attrition within this professional group. This PhD aimed to explore the factors contributing to attrition in the dental therapy profession. The first objective was to determine South African dental therapists' attrition rate and demographic profile over 42 years (1977-2019). The second objective explored factors contributing to attrition, while the third objective explored the applicability of the Hertzberg Two-Factor Theory in the context of dental therapy attrition in South Africa. Methods: This was a concurrent mixed methods study, involving registered graduate dental therapists, former dental therapists, and key stakeholders. The conceptual framework that guided the study was derived from Hertzberg's Two-Factor Theory. Data sources included the HPCSA registry and primary data collected using a quantitative survey investigating job satisfaction and intention to leave among registered graduate dental therapists and qualitative in-depth interviews with former dental therapists and key stakeholders to gain insights into their perspectives on attrition in the dental therapy profession. The attrition rate was determined by using the formula (Attrition Rate = Number of dental therapists who left the profession divided by the total number of dental therapists registered during the period of interest, multiplied by 100). Quantitative data was analysed in STATA version 15 using descriptive and inferential statistics, and qualitative data was analysed using thematic analysis. Findings: A total of 1232 dental therapists were registered with HPCSA over 42 years, with only 714 registered in 2019, two-thirds of whom were Africans. The attrition rate over the 42 years was 40%, while it reduced to 9% during the 10 years from 2010 to 2019. Of the 200 registered dental therapists who took part in the survey, 74.5% being Africans, approximately 51.5% expressed their intention to leave the profession and a notable 69.5% reported job dissatisfaction. In logistic regression analysis, job satisfaction correlated positively with several factors, including qualification from UKZN (AOR= 2.28, CI: 1.06-4.91), post-graduation job availability (AOR=3.87, CI: 1.73-8.69), awareness of postgraduate opportunities (AOR=2.28, CI: 1.05-4.96), and feeling valued (AOR= 6.91, CI: 1.45-26.36). Conversely, job satisfaction was negatively associated with becoming aware of the scope of work only after enrolment (AOR= 0.31, CI: 0.21-0.81). Job satisfaction was inversely correlated with the intention to leave; satisfied individuals had significantly lower odds of intending to leave (AOR= 0.25, CI: 0.11-0.57). In-depth interviews with 14 former dental therapists identified diverse reasons for enrolling in dental therapy and a shared enthusiasm for the dental therapy profession. Most reasons they cited for attrition, such as inadequate remuneration, job scarcity, poor working conditions, lack of career advancement opportunities, and policy implementation gaps aligned with Herzberg's Two-Factor Theory. One novel factor contributing to attrition not covered by the theory was a lack of professional identity. The 12 key stakeholders who were interviewed echoed similar factors contributing to the attrition of dental therapists. To address limitations in moving from a description of factors to recommendations on how to address system-level challenges, I adapted a framework that is a combination of Herzberg's Two-Factor Theory and the Human Resources for Health System Development framework. This new framework addresses multifaceted issues affecting dental therapists, covering production, deployment, and retention. Conclusion: This study sheds light on challenges within South Africa's dental therapy profession, highlighting their profound implications for both the profession and the broader healthcare system. Despite comparable attrition rates to other mid-level health professionals, there were alarmingly high job dissatisfaction levels and intentions to leave the profession, demanding immediate attention and intervention. Identifying key factors contributing to attrition and the novel insight into the lack of professional identity collectively highlight the multifaceted nature of the issue. To address these challenges, embracing a comprehensive human resource retention framework is imperative. This study emphasizes the urgent need for proactive measures to ensure the sustainability and contentment of dental therapists, ultimately benefiting the healthcare system and the communities it serves. Addressing these factors will lead to increased retention rates and improved access to basic oral health services nationwide