3. Electronic Theses and Dissertations (ETDs) - All submissions
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Item Adherence to highly active antiretroviral treatment and loss to follow-up of pregnent women at the Themba Lethu Clinicu(2011-06-10) Nagar, ShashikalaINTRODUCTION Although much focus has been placed towards rapid scale-up of antiretroviral treatment programmes and interventions for the prevention of mother-to-child transmission of human immunodeficiency virus (HIV), very little is known about adherence to highly active antiretroviral therapy (HAART) and loss to follow-up of pregnant women in antiretroviral treatment programmes in the developing world. In this retrospective cohort analysis, we described the baseline characteristics of adult women who were pregnant at the time of HAART initiation (pregnant at start) as well as women who became pregnant during follow-up after starting HAART (pregnant after) and women who never had a pregnancy (not pregnant) during the study period. We evaluated the association of pregnancy status with adherence and loss to follow-up in these three groups of women. MATERIALS AND METHODS Themba Lethu Clinic is an urban public-sector antiretroviral rollout facility in Johannesburg, South Africa. A retrospective analysis was conducted of all adult women initiating HAART at this clinic between January 2005 and December 2007. Clinical data from these patients was analysed for differences in rates of loss to follow-up, and measured adherence rates based on CD4 cell count response and virologic suppression. Regression models were performed to determine independent predictors of adherence and loss to follow-up and compared between the three groups. Survival analysis, in the form of Kaplan-Meier plots and log-rank tests, was used to compare the time to becoming lost to follow up. RESULTS Between 1 January 2005 and 31 December 2007, 5129 women initiated HAART at Themba Lethu Clinic, Johannesburg, South Africa. Of these women, 521 (10.0%) were pregnant at the time of HAART initiation (pregnant at start) and 291 (5.6%) became pregnant during follow-up (pregnant after). Women who were pregnant at start (16.6%) of HAART had less-advanced HIV disease than the not pregnant women and pregnant women after HAART initiation 4608 (89.9%). Overall pregnant women were significantly younger than the not pregnant women and fewer pregnant women had a CD4 <100 cells/mm3 and a WHO stage III of HIV disease. There was no significant difference in the CD4 cell count response and virological suppression between the three groups of women based on pregnancy status at 6 months and 12 months (X2=2.1, p=0.347 and X2=4.4, p=0.111 respectively). However, women pregnant at start were more likely to become lost to follow-up (X2=15.8, P=<.0001) during follow up. In the multivariate Cox logistic regression model, independent predictors of loss to follow-up were pregnancy, baseline CD4 cell count and age at initiation. Being pregnant was significantly associated with being loss to follow-up. CONCLUSIONS Pregnancy is significantly associated with defaulting treatment and becoming lost to follow-up from HAART treatment programmes. Together with being pregnant, young age and a low CD4 at baseline are high risk factors for non adherence and loss to follow-up in this sub-group of the population. Early initiation of HAART with adequate pre-treatment counselling and ongoing adherence support could help improve adherence and retention in care for patients in treatment programmes in resource-limited settings. Interventions to trace patients immediately upon missed appointments would help to reduce the number of patients’ loss to follow-up. Moreover, integration of tuberculosis (TB), antenatal care (ANC) and HIV treatment services may maximize the effectiveness of interventions aimed at reducing the loss to follow-up rate. The initiation of HAART in pregnancy requires strengthened antenatal and HIV services that target women with advanced stage disease.Item Barriers and facilitators to antiretroviral therapy adherence: a patient and health -care provider perspective(2010-08-27) Patel, RabiaHIV/AIDS remains a global pandemic that is affecting millions of people. The advent of antiretroviral medication in the late 1980s has led to major advances in clinical treatment that has turned the deadly disease into a chronic condition for those who are infected. However, adherence to antiretroviral medication remains problematic. Whilst extensive international research has been done to identify various variables that contribute to rates of non-adherence, there is not much research being done in South Africa that provides a reliable prediction of non-adherence or generates a theoretical understanding of the issue. The main aim of this study was to ascertain the barriers and facilitators that contribute to the level of adherence to antiretroviral treatment. This was done from a biopsychosocial perspective that takes into account not only the biomedical factors that may have an impact on antiretroviral treatment levels but also includes the various psychological and socio-political factors that contribute to non-adherence. The qualitative research methodology was used. Data was collected from 14 participants using semi-structured interviews. The participants included 3 medical practitioners, 1 nutritionist, 2 counsellors, 2 treatment activist, 2 caregivers to PLWHA and 4 people on treatment. Interviews were audio-recorded and transcribed. Thematic content analysis was used to generate themes. Themes were categorised under individual, interpersonal level and systemic level barriers and facilitators to ARV treatment which included biomedical, psychological as well as social-political factors that facilitate non-adherence. The main findings in this study suggest that there is a complex web of interaction between the various biomedical, psychological and socio-political factors that impact on adherence levels. Additionally, the response by PLWHA to their illness and subsequently to ARV treatment is more complex than a mere conforming to a set of medical standards and instructions. As such intervention that looks to increase adherence levels cannot be a one-dimensional or onesided endeavour and requires a multifaceted approach.Item Self reported factors influencing adult patients' adherence to antiretroviral therapy at St Rita's Hospital(2009-11-12T13:00:21Z) Onwukkwe, Victor NnannaThe cornerstone in the fight against HIV/AIDS is prevention followed by the access to and use of highly active antiretroviral treatment (HAART). Adherence is the greatest patient- enabled predictor of treatment outcome for the patients on HAART, as good adherence leads to a decrease in disease progression and death. There is no ‘gold standard’ in the measurement of adherence. Also, factors that influence adherence and hence the prevalence of adherence differ across different settings making it necessary to determine local adherence prevalence as well as factors that might impact on it. This was a cross sectional study which assessed the prevalence of one- week adherence to antiretroviral therapy at St Rita’s hospital through an abridged version of the questionnaire developed by the Adult Aids Clinical Trials Group in the United States. Results from the questionnaires were compared to the results from a decrease in plasma viral load to undetectable limits within six months. The study found out that the prevalence of one- week adherence by self-report was 96.8% (95% CI: 93.2 – 98.9%). Using a decrease in viral load to undetectable limits within six months of initiating treatment as a tool to assess adherence, the prevalence in this study was 96%. A combined prevalence of 94% was found for this study. These results were identical to a few results locally but it was much higher than most local studies. The explanation for this apparent higher adherence rate might be that the study site has not reached its maximum capacity for the delivery of service as it is still operating at just below the staff/patient ratio recommended by the Department of health. The study also found out that being a member of an AIDS support group was a facilitator to adherence while lack of adherence counselling and monitoring is a barrier. Based on these findings it is therefore recommended that measures should be put in place to ensure improving existing adherence counselling and monitoring, encouraging patients to belong to at least one AIDS support group, more decentralization of antiretroviral therapy roll out to the districts that are yet to roll out and providing financial assistance through improved access to disability grants for those who qualify and income generating activities for the unemployed that do not qualify for disability grant.Item Organisational capacity affecting adherence to Anti Retroviral Therapy at two public sector sites in Gauteng(2009-02-10T08:01:05Z) Pursell, RebeccaABSTRACT The formulation and approval of the Operational Plan for Comprehensive Care, Management and Treatment for HIV/AIDS in 2003 was a major victory for the roll-out of anti-retroviral therapy (ART) in the public sector in South Africa. Since its initiation in 2004, the ART Programme has expanded rapidly and realised considerable gains in prolonging life. However, it has also faced major constraints and implementation has been uneven across provinces. This study investigates the impact of organisational capacity upon levels of adherence to ART in two public sector sites in Gauteng. The study uses the Chronic Care Model (CCM) proposed by Edward Wagner (2004). The CCM identifies four major components as crucial to effective clinical outcomes for the management of chronic care. These factors are (1) prepared proactive practice teams; (2) delivery systems design; (3) decision support; and (4) clinical information systems. Both sites demonstrated different strengths and constraints. Strengths included the presence of motivated champions leading the ART service, positive patient-provider relationships, shifting of tasks to lower level health workers to deal with the shortage of skilled staff, good relationships with non-governmental organisations and the innovation to deal with challenges in a way that does not compromise the quality of care provided to patients using the CCMT service. Overall constraints that were identified in the two facilities include the shortage of skilled staff, burn-out among staff, a shortage of space, inconsistent data collection and interpretation, as well as poor integration and collaboration between local and provincial government in relation to the shared responsibility for the provision of Tuberculosis (TB) treatment and other related CCMT services. Despite these barriers, levels of adherence exceeded 85% in both sites.Item Exploring expert and patient opinions and recommendations regarding anti-retroviral treatment compliance(2007-02-15T12:51:37Z) Frank, Janice MerylThe recent introduction of antiretroviral treatment (ART) to the public health sector has meant that for millions of Human Immunodeficiency Virus (HIV)-positive patients this deadly disease has been transformed into a chronic condition. There has been much research done internationally on adherence to ART but in South Africa there has been little investigation in this area. This study aimed to bridge this gap by exploring expert and patient opinions and recommendatio ns regarding adherence to antiretroviral medication. To attain this, four experts and seven patients were interviewed using a semistructured interview schedule. The experts had worked within the HIV field for at least two years while the patients had been chosen from public antiretroviral roll-out programmes and had been on ART for at least six months. These interviews were audio recorded and transcribed. The transcriptions were then explored for themes using thematic content analysis. These themes were categorised and discussed under four broad categories: patients’ perceptions of barriers to adherence, patients’ recommendations for improving adherence, experts’ perceptions of barriers to adherence and experts’ recommendations for improving adherence.