Background: Pregnancy Induced Hypertension (PIH) and its complications contribute to a significant burden of disease both in developed and developing countries of the world. Unfortunately, PIH has no cure, the delivery of the baby and the placenta is required. Early detection of pregnancy induced hypertension and close monitoring remains the key to achieving a favourable outcome. This study aimed to determine the quality of care given to women diagnosed with Pregnancy Induced Hypertension (PIH) within a care pathway spanning peri-urban primary and urban secondary level facilities. Methods: This was a retrospective clinical audit of medical records of patients diagnosed with PIH. It was conducted in the Wesfleur -New Somerset Hospital drainage area, using a locally validated data extraction tool, based on the South African Maternal Care Guidelines. The data were analyzed using descriptive methods to report on the frequencies and proportions of the variables, and analyzed to report on statistical significance of correlations. Results: The prevalence rate of pregnancy induced hypertension in this study was 12%. The overall pregnancy induced hypertension complication prevalence in the study for mothers was 7.7%, and that of babies was 30.7%. Facilities generally performed well according to the audit indicators detailing structures and processes that should be followed, as outlined by the standard guidelines used. Two process indicators were correlated with adverse outcomes: 66.1% of patients were appropriately referred, resulting in statistically better foetal outcomes (p = 0.059); and those who booked early in the pregnancy had less PIH-induced complications than those who booked late (p = 0.012) Conclusion: This study followed a standardized audit methodology and found that the quality of care in this peri-urban area is of a good standard and identified areas for quality improvement and further enquiry to ensure continual improvement in maternal and fetal outcomes.

Requirements of high performing engine oil are today necessary since the development of new machinery with modern standardsis a cutting edge technology demanding highly optimized components. One way of increasing the lubricating properties of engineoil is through the addition of antioxidants. Antioxidants included in lubricants have a number of functions, one being buffering theinorganic acids sulphuric acid and nitric acid.A novel method expected to lower the hydrogen ion concentration in acidified engine oil was evaluated in this thesis. Thecapability of four different types of cation exchangers to serve as complements for buffering additives in heavy vehicle engineswas assessed. Two cation exchangers were weak and two were strong. The analysis techniques used to evaluate what effect thecation exchangers have on engine oil were standard test method ASTM D4739, for measurements of the total base number (TBN),and inductively coupled plasma – atomic emission spectroscopy (ICP-AES). With ASTM D4739 it was found that weak cationexchangers give positive results with respect to the ability to decrease the hydrogen ion concentration in acidified engine oil.However, after begin subjected to strong cation exchangers, ASTM D4739 indicated that the hydrogen ion concentration in theacidified engine oil remains the same or increases.With additional literature studies of a variety of cation exchangers currently on the market, further optimization of the cationexchanging material could likely be achieved. In addition, the preparation method used during the evaluation of the cationexchangers should be optimized to give more reliable results.

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