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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
141

African traditional medicines-antiretroviral drug interactions: the effect of African potato (Hypoxis hemerocallidea) on the pharmacokinetics of efavirenz in humans

Mogatle, Seloi January 2009 (has links)
African Potato (Hypoxis hemerocallidea), (AP) is an African traditional medicine (TM) that is commonly used for various nutritional/medicinal purposes and also by people infected with the human immuno deficiency virus HIV and AIDS patients as an immune booster. The use of AP has also been recommended by the former Minister of Health of South Africa for use by HIV positive people. The main phytochemical component of AP is a norlignan glucoside, hypoxoside, and other relatively minor components have also been reported. A recent in vitro study reported the effects of AP extracts, hypoxoside and rooperol (the metabolite of hypoxoside) on human metabolic enzymes such as the cytochrome P450 (CYP450) group of enzymes and also on the transporter protein, p-glycoprotein (P-gp). This research focussed on investigating the clinical significance of those in vitro effects on the pharmacokinetics of efavirenz (EFV) in humans. EFV was chosen as the substrate drug because it is in first-line regimen of treatment of HIV/AIDS in South Africa, and also has been reported to be a substrate for the specific CYP isozymes, 3A4 and 2B6, in common with APs metabolic involvement with 3A4. A high performance liquid chromatography method with ultra-violet detection (HPLC-UV) for the quantitative determination of EFV in plasma was developed and successfully validated according to international standards with good reproducibility, accuracy, recovery, linear response and requisite sensitivity. The preparation of the plasma samples for analysis was effected by using a simple and rapid precipitation method, and the mobile phase consisted of readily available solvents. EFV in plasma samples was found to be stable under the relevant storage conditions studied. The oral dose of AP, administered as a freshly prepared traditional decoction, was standardised based on the hypoxoside content, and the quality of all the AP decoctions was analysed immediately prior to administration, using a validated HPLC-UV method. A single dose, two-phase sequential study was conducted over a period of 31 days in 10 healthy volunteers. The clinical study was approved by the Rhodes University Ethical Standards Committee, and all the participants agreed to the conditions of the study by giving their informed consent. On day 1 of the study, human subjects were administered a 600 mg EFV tablet and blood samples were collected before dosing and at various intervals over a period of 48 hr post dosing. From day 16, a traditionally prepared AP decoction was administered daily at a standardized dose of 15 mg/kg/day per subject until day 30. On day 29, volunteers were administered a single 600 mg dose of EFV as was done on day 1. Plasma samples were harvested immediately after blood sample collection and frozen at -80 ºC until assayed. Geometric mean ratios of relevant pharmacokinetic parameters, Cmax (maximum plasma concentration achieved following dosing) and AUC0-48 (area under the curve of a plot of drug plasma concentrations versus time representing the extent of absorption) of EFV before and after co-administration of 14 successive daily doses of AP were compared and evaluated to determine whether an interaction had occurred. All subjects completed the study and the geometric mean ratios of Cmax and AUC0-48 were 97.30 and 102.82 with corresponding 90% confidence intervals (CIs) of 78.81-120.14% and 89.04-118.80%, respectively. Whereas the acceptance criteria for the ratios of the AUCs fell within the preset 90% CIs indicating no interaction, the Cmax ratios fell outside the limits. Although the protocol was developed in accordance with the United States of America Food & Drug Administration’s Guidance for Drug Interactions, a priori stating that both criteria need to fall within the acceptance limits to indicate no interaction, an argument is presented to waive the Cmax requirement for the declaration of an interaction. As a result, the pharmacokinetic data generated during this study indicated that the effect of AP on the pharmacokinetics of EFV is not clinically significant. Hence, co-administration of AP is unlikely to affect the clinical use of EFV. In summary the objectives of this project were: 1. To develop and validate a suitable HPLC-UV method for the quantitative determination of EFV in plasma. 2. To perform a mini-validation of the determination of hypoxoside for use as a marker in the quality control and standardisation of AP decoctions. 3. To conduct a clinical interaction study in order to determine whether AP affects the pharmacokinetics of EFV following concurrent administration. 4. To apply the validated HPLC-UV method to determine plasma concentrations of EFV in plasma of human subjects. 5. To use appropriate statistical methods and treatments such as a non-compartmental pharmacokinetic analysis to determine the occurrence of an interaction.
142

Infection with high risk Human Papillomavirus (HRHPV) among HIV-positive women: epidemiology, natural history and impact of combined antiretroviral therapy / Infection par le papillomavirus à haut risque chez les femmes VIH-positives: épidémiologie, histoire naturelle et impact des thérapies antirétrovirales combinées

Konopnicki, Deborah 26 June 2014 (has links)
L’infection persistante par les papillomavirus (HPV) dits « à haut risque » induit le cancer du col. Chez les femmes infectées par le VIH, les infections par ces HPV oncogènes et les lésions associées, allant des dysplasies au cancer invasif, sont plus fréquentes, plus sévères et de moins bon pronostic que chez les femmes non porteuses du VIH. Etonnamment, alors qu’il a été clairement établi que l’importance de la pathologie liée à HPV est directement proportionnelle au degré d’immunodépression des patientes porteuses du VIH, il n’a pas pu être démontré qu’un traitement antirétroviral efficace contre le VIH permettant d’améliorer l’immunité, diminue l’infection par ces HPV. <p>Entre janvier 2002 et décembre 2012, nous avons constitué une cohorte prospective de dépistage et de suivi de l’infection cervicale par HPV à haut risque incluant plus de 900 femmes traitées à la consultation du Centre de Référence SIDA de l’hôpital Saint-Pierre. Nos résultats montrent que chez ces femmes pour la plupart d’origine Africaine et traitée avec succès pour le VIH depuis plusieurs années, la prévalence et l’incidence de l’infection par HPV oncogène sont beaucoup plus importantes que dans la population belge générale ou que chez les femmes séropositives vivant dans d’autres pays occidentaux. Grâce à un suivi longitudinal de plusieurs années, nous avons pu démontrer que le risque d’être infectée par un HPV oncogène est significativement réduit sous trithérapie anti-VIH sous réserve d’obtenir une charge virale indétectable à <50 cp/ml pendant plus de 3 ans ou une restauration immunitaire à >500 lymphocytes CD4+/µL pendant plus d’un an et demi. Ces résultats ont été confirmés dans l’analyse que nous avons faite sur les nombreuses dysplasies cervicales également retrouvées dans notre cohorte. Enfin, nous avons trouvé que la distribution des génotypes d’HPV de nos patientes est similaire à celle trouvée en Afrique sub-saharienne impliquant que la couverture offerte par les vaccins anti-HPV varie entre moins de 30% pour les vaccins bi- ou quadrivalent actuellement disponibles à 80% pour le vaccin nanovalent en développement. Notre travail met en lumière l’étendue particulièrement importante de l’infection par HPV à haut risque chez les femmes séropositives vivant en Belgique et offre de nouveaux éléments de réflexion afin d’adapter à leurs particularités les recommandations belges et les critères de remboursement à la fois pour le dépistage du cancer cervical et la vaccination anti-HPV.<p>/<p>Persistent infection with human papillomavirus (HPV) called “at high risk” induces cervical cancer. In HIV-positive women, infection with these oncogenic HPV and HPV-induced lesions ranging from cervical dysplasia to invasive cancer are more frequent, more severe and have a worst outcome than in HIV-negative women. An intriguing paradox is that, although it has been clearly demonstrated that high risk HPV infection and associated diseases are increased by progressive immune deficiency, the introduction of efficient therapy against HIV leading to improved immunity has not been associated with a decrease in oncogenic HPV infection or HPV-induced lesions.<p>Between January 2002 and December 2012, we have built a prospective cohort to screen and follow-up cervical infection by high risk HPV in more than 900 women treated for HIV in the AIDS Reference centre of Saint-Pierre Hospital. We have shown that among these women mainly from Sub-Saharan African origin and successfully treated for HIV for several years, the prevalence and incidence rate of high risk HPV are much higher than in the general population from Belgium or in HIV-positive women from other western countries. After several years of longitudinal follow up, we have demonstrated that the risk of infection by oncogenic HPV is significantly reduced by efficient therapy against HIV provided that HIV viral load has been sustainly suppressed below 50 cp/ml for more than 3 years or that immunity has been increased more than 500 CD4+T cells/µl for more than 1.5 years. These results have been confirmed in the analysis on cervical dysplasia which is also very prevalent in our cohort. At last, we have found that the HPV genotype distribution in our population is very similar to the one found in Sub-Saharan Africa. We have estimated that the coverage offered by the vaccines against HPV in our cohort is less than 30% for the currently available bi- or quadrivalent vaccine but reaches 80% with the future nanovalent vaccine. Our results highlight many differences in the HPV infection and associated diseases in HIV-positive women compared to HIV-negative women; these differences should be taken into account to adapt to our specific population the current Belgian guidelines or the reimbursement criteria on cervical screening and on vaccines against HPV. <p> / Doctorat en Sciences médicales / info:eu-repo/semantics/nonPublished
143

Management of an HIV/AIDS wellness programme : a case study of the HIV Your life programme

Ganesh, Shayhana January 2017 (has links)
Submitted in fulfilment of the requirements for the Degree of Doctor in Public Management, Durban Universit of Technology, 2017. / HIV-AIDS has infected more than 37 million individuals globally and has resulted in approximately 35 million HIV-AIDS related deaths globally since its discovery 35 years ago. HIV-AIDS remains a global and local health crisis as, despite innovative and accessible HIV-AIDS prevention efforts, the disease continues to spread. UNAIDS estimated over 2 milliion new HIV-AIDS infections with 700 000 of these infections occurring in young African women in 2015, revealing that the burden of HIV-AIDS is far from over (UNAIDS, 2016). As more individuals become infected with HIV-AIDS, more infected individuals are living longer, productive lives due to the international rollout and scale-up of life-saving antiretroviral (ARV) therapy aimed at halting disease progression. In 16 years, the world has initiated over 16 million HIV-infected individuals onto ARV programmes across the world aimed at preserving first line drug effectiveness of treatment, less resistance and lower mortality and morbidity rates( UNAIDS, 2016). This number is set to double as countries across the globe take bold steps to provide ARV treatment for all, based on latest WHO guideline changes. The initiative of ARV roll out for all HIV-positive individuals globally, brings with it the challenges and complexities of infrastructure support, resource allocation, uninterrupted drug supply, global access and clinical training requirements for HIV-AIDS programmes across the globe. Quality management systems with monitoring and evaluation frameworks in particular play a pivotal role in planning, allocating and utilising resources for optimal health benefits.This research study reviews available data on the prevalence of quality management systems in HIV-AIDS healthcare and identifies gaps and smart practises towards recommendations for comprehensive global HIV-AIDS standards development. This research study aims to propose a conceptual monitoring and evaluation framework derived from quality management systems for management of HIV-AIDS private sector programmes that can be used in both public and private healthcare sectors through analysis of current conceptual frameworks in the HIV-AIDS healthcare and the HIV-AIDS programmes within the South African context of HIV-AIDS healthcare provision. / D
144

Response and adherence of HIV positive women to cervical cancer treatment

Ngugi, Pearl January 2011 (has links)
It is estimated that 6742 South African women are diagnosed with cervical cancer and 3681 women die from the disease every year. In 1993, The Centers for Disease Control declared cervical cancer an Acquired Immunodeficiency Syndrome defining illness. Apart from persistent human papillomavirus infection, HIV infection is the most common co-factor contributing to cervical cancer in South Africa. Studies have noted that in HIV positive women, there has been an occurrence of faster progression to more advanced stages of cervical cancer with high cases of treatment failure and recurrence. There is limited literature available regarding the prognosis of HIV positive women who suffer from cervical cancer. Women who are HIV positive and have cervical cancer have not been evaluated in detail regarding their response and adherence to cervical cancer treatment. Standard treatment protocols for this set of patients have not been defined. The aim of this study was to assess how HIV positive women who have been diagnosed with cervical cancer responded and adhered to cervical cancer therapy which includes: curative radiotherapy; curative chemotherapy; concurrent chemoradiation or palliative radiotherapy. The study also evaluated the effects of the concurrent use of antiretrovirals and cervical cancer treatment. This was done to determine whether invasive cervical cancer in women who were HIV positive could be managed using the same treatment protocols as patients who were HIV negative. A historical cohort design was employed for the study. The study was conducted at the Oncology Department of a tertiary level hospital located in the Eastern Cape Province, South Africa. The total sample consisted of 196 medical records of women diagnosed with cervical cancer between 2005 and 2008. One hundred women were HIV negative, 83 were HIV positive and the HIV status of 13 women could not be determined. The records were audited over a period of two years from the date of diagnosis. The term „complete response‟ referred to patients who had no recurrence of cervical cancer and no evidence of metastases after undergoing treatment. At one month following treatment there was a significant difference in the incidence of complete response between the HIV positive patients and the HIV negative patients (Chi2 = 16.4, d.f. = 1, p = 0.00005, Cramer‟s V = 0.31). The significant difference in response to treatment between the HIV positive patients and the HIV negative patients was maintained at six months after treatment (Chi2 = 15, d.f. = 1, p = 0.00011, Cramer‟s V = 0.34), 12 months after treatment (Chi2 = 20.5, d.f. = 1, p = 0.00001, Cramer‟s V = 0.37), 18 months after treatment (Chi2 = 9.8, d.f. = 1, p = 0.00173, Cramer‟s V = 0.28) and 24 months after treatment (Chi2 = 5.0, d.f. = 1, p = 0.02571, Cramer‟s V = 0.26). At each of these intervals, cases of treatment failure and metastases were significantly higher in the HIV positive women than in the HIV negative women. Although there was no significant difference in the incidence of adherence between the HIV negative women, the HIV positive women who were on HAART and the HIV positive women who were not on HAART, there was a significant difference in the incidence of the various reasons for non adherence between the various groups. These reasons included: missed scheduled appointments (Chi2 = 2.9, d.f. = 2, p = 0.02385, Cramer‟s V = 0.31); low blood count (Chi2 = 4.0, d.f. = 2, p = 0.01327, Cramer‟s V = 0.15); radiotherapy induced skin breakdown (Chi2 = 0.6, d.f. = 2, p = 0.04581, Cramer‟s V = 0.16) and radiotherapy induced diarrhoea (Chi2 = 6.9, d.f. = 2, p = 0.03118, Cramer‟s V = 0.19). According to the 2004 National Antiretroviral Treatment Guidelines, cervical cancer patients would fall into the WHO stage IV category of HIV disease thus all patients with confirmed diagnosis of invasive cervical cancer should be commenced on antiretrovirals as soon as the cancer diagnosis is made regardless of their CD4 count. However, in the current study, 13 percent (n= 83) of the HIV positive women were not on antiretrovirals. The study concluded that HIV positive women had a higher incidence of both treatment failure and metastases to cervical cancer treatment. Standard radiotherapy and concurrent chemoradiation cervical cancer treatment protocols should be still be used in both HIV negative patients and HIV positive patients so as not to compromise tumour control. Furthermore, in accordance with the antiretroviral treatment guidelines, all HIV positive patients with cervical cancer should receive antiretrovirals irrespective of their CD4 count.
145

The management of antiretroviral drug distribution in the Qwaqwa District

Mokheseng, Mamolise January 2013 (has links)
The supply of Antiretrovirals (ARVs) to HIV/AIDS patients in most of the provinces in South Africa is hindered by various factors such as ineffective and inefficient drug procurement, and drug distribution systems. In the QwaQwa district in the Free State Province, a major barrier to the consistent supply of Highly Active Antiretroviral Treatment was identified to be the lack of an effective and efficient ARV drug distribution system. This resulted in major drug supply shortages in the QwaQwa district. A continuous, uninterrupted supply of ARVs to HIV/AIDS patients is critical to avoid drug resistance and therapy failure. Failure of a patient to respond to treatment results in a deterioration of a patient's health, and ultimately leads to death. The purpose of the study was to determine whether the ARV drug distribution practices at the Manapo Hospital in the QwaQwa district were effective and efficient in the management of ARVs. The distribution practices reviewed were the ordering, transportation, the management of inventory and warehousing, and the distribution of treatment to HIV/AIDS patients. Quantitative exploratory, descriptive and contextual methods were used to determine the relationship between the ARV drug distribution practices and the effective management of the ARVs. The study comprised of a sample size of twenty-one participants. The sample size entailed the Manapo Hospital pharmacists and pharmacist assistants who have been or are currently involved in the distribution of ARVs in the QwaQwa district since the initiation of the ARV rollout programme in 2004. The study revealed that the practices performed in the management of ARVs in the QwaQwa district were neither effective nor efficient in the distribution of ARVs. The recommendations of the study were identified to further ensure the effective and efficient management of the ARV drug distribution system, which will ensure a consistent supply of treatment to HIV/AIDS patients. Guidelines were developed for better circulation, thus meeting the objectives of the research.
146

Identifying, recording and monitoring adverse effects associated with antriretroviral treatment

Mulinge, Florence Muthoni January 2010 (has links)
South Africa, with an estimated 5.7 million people living with HIV, continues to have one of the largest epidemics in the world. The introduction of HAART resulted in prolonged and improved quality of life of many infected patients. However, adverse effects caused by these drugs have become a major concern as they affect the adherence of patients and in some cases even result in the death of patients. Although much research has been and is still being conducted in the area of understanding, preventing and management of ARV adverse effects, there is still a need for patients to be actively involved in self-monitoring for adverse effects. This will assist health care professionals in early identification of serious or potentially serious ARV effects. This study aimed at evaluating the usefulness of strategies developed and employed in the identification, recording and monitoring of adverse effects. The study was conducted with patients receiving HAART from a private HIV and AIDS clinic in Uitenhage, Eastern Cape, South Africa. The research project was approved by the Nelson Mandela Metropolitan University Research and Ethics Committee and the research site. This was an experimental, randomized controlled study carried out over a period of three months (August to October 2009), with a sample size of 160 patients divided into four study groups of 40 patients each. Two monitoring strategies, namely an ARV adverse effect monitoring tool and a patient self-monitoring diary were developed and used for the identification and recording of adverse effects. The four study groups included a Control group, a Tool group, a Diary group and a Tool-Diary group. Willing patients, after signing an informed consent form, were randomly assigned to one of the four groups by participating health care workers at the study site. Data was retrieved from the patient files by the researcher. Descriptive statistical analysis of the findings of the study was conducted using SPSS®. One hundred and forty nine patients were included in the final data analysis. Of the 80 diaries handed out to patients, only 33 were returned and due to errors only 31 were suitable for analysis. Monitoring tools were completed and analysed for 36 patients. The tool was found to be more effective in identifying adverse effects of a physical nature (such as peripheral neuropathy and lipodystrophy) than the usual methods of monitoring employed by the clinic, whilst the diary, used alone, was found to be less effective. Use of the tool and diary combined resulted in the most significant identification and recording of central nervous system related adverse effects and physical adverse effects. However due to the low return rate of the diaries and the majority of the monitoring tool not being completed in many instances the results of this study may not be generalisable. The study results did however suggest that combining the tool and the diary methods of adverse effect identification, yielded the most favourable results when compared to each method alone. This may be attributed to the fact that the tool is useful in identifying objective symptoms and the diaries subjective symptoms, particularly in instances where the patients forget to report their symptoms to healthcare professional whilst at the clinic. The diaries were also reported to improve adherence for more than 90 percentage (n=31) of the patients. More research would be needed in order to verify the exact significance of the tool and the diary in identifying and recording adverse effects and symptoms of adverse effects.
147

The experiences of people living with HIV-AIDS with regard to the comprehensive antiretroviral therapy management received from registered nurses at selected public primary heathcare clinics in Nelson Mandela Bay

Jackson, Dawne Shirley January 2009 (has links)
Currently South Africa has the highest number of persons living with HIV-AIDS (PLWAs) in the world. Focus-group discussions conducted by Moon (2005:3) in the Eastern Cape indicated that people may not want to get tested for HIV or to access antiretroviral therapy (ART) for fear of disclosure of their HIV-positive status and of stigmatization. These findings prompted the researcher to conduct a study in this field. The objectives of this study are to explore and describe the experiences of PLWAs with regard to the comprehensive ART management received from registered nurses at selected public primary healthcare clinics in Nelson Mandela Bay; and to develop guidelines for registered nurses that could facilitate them in rendering appropriate comprehensive ART management. The research study is based on a qualitative, explorative, descriptive, phenomenological and contextual research design. The research population comprised of HIV-positive patients who received treatment at the selected public primary healthcare clinics. Criterion-based, purposive sampling was used to select participants for the interviews. Ten in-depth unstructured interviews were conducted. Data was then transcribed and coded. One central theme identified the fact that PLWAs experienced both positive and negative experiences at the clinics. The main findings of this research included evidence of various forms of stigma experienced by the PLWAs; distrust of the lay health counselors; but also that PLWAs were generally well-treated and satisfied with the service they had received. Broad guidelines for registered nurses was formulated that could facilitate them in rendering appropriate comprehensive ART management. The study concludes with recommendations made with regards to the areas of nursing practice, education and research. Throughout the study the researcher abided by the ethical considerations. The aspects of trustworthiness implemented in this study, included dependability, credibility, transferability and confirmability (Holloway & Wheeler, 2002:354).
148

Effect of a South African medicinal plant on antiretroviral drug induced abnormalities in rats

Van Gend, Tania Anli January 2008 (has links)
The worldwide AIDS epidemic is known to have had a profoundly negative social, economic and personal impact and has taken a heavy toll on existing health care systems, particularly in developing countries. South Africa is experiencing an HIV epidemic with enormous social and economic consequences. Lopinavir/ritonavir antiretroviral treatment has been accredited with having a significantly positive effect and is a key advance in controlling HIV morbidity and mortality. An indigenous South African medicinal plant, Sutherlandia frutescens, known for its anti-diabetic properties and immune-boosting effects, is used for treating HIV positive patients suffering from opportunistic infections. Despite the use of the medicinal plant extract as homeotherapeutic medication, there is little evidence of toxicity testing that identifies its potential for interaction with antiretroviral drugs. However, scientific data relating to the mechanism through which Sutherlandia frutescens acts on the immune system has not been comprehensively documented. The aim of this study was to investigate lopinavir/ritonavir induced metabolic abnormalities in rats and whether the introduction of a plant extract of Sutherlandia frutescens would counteract the side effects of ARV medication. The results indicated that the rodents did not become insulin resistant, however, biochemical analysis indicated that extended ARV drug treatment would have caused insulin resistance. Significant morphological changes were found in the livers, kidneys and pancreases of rats exposed to the lopinavir/ritonavir. Rats exposed to the Sutherlandia frutescens plant extract showed improved histopathology with minimal abnormalities.
149

Strategies used by professional nurses to manage newly diagnosed HIV positive pregnant women who fail to return within a month for further management and care

Jama, Nontembiso Mary January 2012 (has links)
This study explored and described the strategies used by nurses to manage newly diagnosed HIV positive pregnant women who do not return to the clinic within a month following diagnosis, for continuity of care. The main aim was to prevent mother-to-child transmission of HIV (PMTCT). Method: The study sites were two accredited antiretroviral- ante-natal care (ARV-ANC) clinics at the Dimbaza community health centre (CHC) and the East London Hospital Complex (ELHC) which comprises of Cecilia Makiwane and Frere hospitals, in the Buffalo City Metropolitan Municipality (BCM). The majority of health personnel at these clinics are professional nurses. An in-depth semi structured interview guide was used to collect data through focus group interviews from professional nurses who work in these units. They were required to share their experiences about intervention strategies used for newly diagnosed HIV- positive, pregnant women who fail to return for continuity of care within a month after diagnosis. Results: Follow up of these women is done by tracking them (by calling them; calling the clinic nearest to their homes and doing home visits). Decentralisation of further management and care to the nearest clinic was also cited, especially for the patients who stay far from these accredited sites. Family support was also mentioned as a strategy to intervene for the non-compliant patients. Challenges: The challenges that were encountered with these interventions include wrong contact details, wrong addresses and being evasive when visited at home. Another challenge cited was related to the stigma attached to the diagnosis and the tracking devices used, for example, the car as it is familiar to the community it serves. Despite known benefits for early initiation of HIV treatment newly diagnosed HIV- positive, pregnant women continue to refrain from accessing care after diagnosis, thus posing a risk to the transmission of HIV to the baby and further comprising their own health. They miss out on general HIV management and ante-natal care. Conclusion: The identified intervention strategies used by nurses to follow up newly diagnosed HIV- positive, pregnant women need to be reinforced and strategies put in place to control the related challenges for a better response by the patients.
150

The effects of highly active antiretroviral therapy on the cognitive-linguistic abilities of adults living with HIV and AIDS in South Africa.

Mupawose, Anniah 24 July 2013 (has links)
In the context of HIV high infection rate in South Africa, an assumption can be made that there is a high prevalence of HIV-associated neurocognitive disorders or cognitive linguistic deficits. The aim of this study was to determine assess whether highly active antiretroviral therapy (HAART) affected the cognitive – linguistic abilities of individuals living with HIV and AIDS before and after HAART use; and to determine whether their functional performance in terms of engaging in activities of daily living was affected by HAART use. Adults living with HIV and AIDs were recruited through purposive convenience sampling to participate in the study. They were divided into three groups. The experimental and cross sectional group included participants who were HIV infected and initiated HAART. The comparison group included participants who elected not to start HAART. Participants in all three group were assessed using the Cognitive – Linguistic Quick Test and were also required to fill out a structured interview scale at baseline, four and eight months. For the experimental group 55 participants were tested at baseline, 55 at four months and 52 at eight months after HAART initiation. The comparison group included 21 participants who tested at baseline, ten at four months and nine at eight months. The cross sectional group included different participants who recruited at baseline (55) before HAART initiation, then again at four (44) and eight months (42) after HAART initiation. Descriptive analysis revealed that the mean scores for both the Cognitive – Linguistic Quick Test (CLQT) and the structured interview schedule (IS) in all the cognitive domains increased for all three groups from four and eight months after testing. However the severity ratings provided by the CLQT indicated that neurocognitive deficits were still prevalent among the participants after HAART intiation. The most impaired cogntive – linguistic ability was executive functions and the least impaired was language. One way ANOVA analysis on the CLQT and IS revealed that was a signiifcant difference in performance between the three groups at baseline, four and eight months. Repeated measures analysis revealed significant differences or improvements within participants across the three time periods. The greatest improvement was observed from baseline to eight months especially on the CLQT. ANCOVA analysis on the Cognitive- Linguistic Quick Test indicated that education had a major impact on cognitive – linguistic abilities followed by age and CD4 count. However, ANCOVA analysis on the structured interview scale revealed that the effect of time, participant group and to a lesser extent age influenced the participants cognitive – linguistic abilities when it came to perfroming activities of daily living. Quantitave inquiry using content analysis showed that participants in all three groups cited attention, followed by visual and language problems as hindering their abilities to perform activities of daily living. The implications from this study revealed that even though HAART improves cognitive –linguistic abilities, neurocognitive deficits were still prevalent. Therefore findings suggest that health professionals need to monitor the neurocognitive impairments of their patients so as determine levels of functional performance.

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