3. Electronic Theses and Dissertations (ETDs) - All submissions
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Item Impact of dexmedetomidine on postoperative biomarkers,length of hospitalisation and mortality in patients undergoing coronary artery bypass graft surgery(2019) Motshabi, Palesa Mamoseki VioletCoronary artery bypass graft surgery, a surgical procedure performed to alleviate the symptoms of ischaemic heart disease and improve prognosis on cardiopulmonary bypass, is beneficial in patients with ischaemic heart disease, however it is not without deleterious adverse clinical events and mortality due to its associated inflammatory and stress response. Dexmedetomidine, an a–2 adrenergic agonist, is a promising drug with a potential towards myocardial protection due to its favourable pharmacological profile. This study investigated the impact of dexmedetomidine compared to placebo on high sensitivity troponin in patients undergoing coronary artery bypass graft surgery on cardiopulmonary artery bypass in a randomised controlled trial. Secondary endpoints included mortality and the length of hospitalization. Subsequently, a systematic review and meta-analysis of randomised controlled trials on the effects of dexmedetomidine on conventional troponin (cTn) compared to control was conducted.Item Periprocedural myocardial infarction following percutaneous coronary intervention at Charlotte Maxeke Johannesburg Academic Hospital(2017) Tsabedze, Nqoba IsraelThe very first coronary artery balloon angioplasty is reported to have been performed by Gruntzig in 1977.1 Subsequently to this, over the past 40 years, there have been significant advances in coronary angiography and intervention. Coronary artery interventional techniques have evolved and improved significantly. There have been considerable device developments, new generation stents and novel antiplatelet therapy which have all proved to reduce the incidence of the primary periprocedural complications associated with percutaneous coronary intervention (PCI). [No abstract provided. Information taken from introduction]Item Ocular findings in patients with homozygous familial hypercholesterolaemia(2017) Goberdhan, AdishaHomozygous familial hypercholesterolaemia is a fatal disease if untreated and has a high prevalence of premature coronary artery disease. Ocular findings may help with earlier identification and coronary artery disease risk stratification. Objectives: The primary objective was to determine ocular findings in patients with homozygous familial hypercholesterolaemia. The secondary objective was to correlate ocular findings with clinical and biochemical data. Design and Method: A cross-sectional study was conducted in 2011. Thirty patients were recruited from the Lipid Clinic at Charlotte Maxeke Johannesburg Academic Hospital. Results: Xanthelasma palpebrarum, corneal arcus, retinal arteriosclerosis and visual field defects were detected. Xanthelasma palpebrarum and corneal arcus were common in patients with overt coronary artery disease. Conclusion: In addition to well-known ocular features of hyperlipidaemia, i.e. xanthelasma palpebrarum, corneal arcus and retinal arteriosclerosis, we detected visual field defects. The assessment of xanthelasma palpebrarum and corneal arcus may help to prognosticate coronary artery disease risk.