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Masters Degrees (Anatomy)

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Browsing Masters Degrees (Anatomy) by Author "Haffajee, Mohamed Rashid."

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    Frequency and predictors of failed spinal anaesthesia for caesarean section at Mthatha General Hospital.
    (2016) Alabi, Adeyinka Abiodun.; Haffajee, Mohamed Rashid.; Pillay, Pamela.
    Background: Reported incidences of failure of spinal anaesthesia during caesarean section and the contributory factors vary widely across practices. Paucity of national guidelines for benchmarking acceptable failure rate in South Africa will impact on assessment of quality of care. This study, therefore, assessed the frequency of and associated factors of failure of spinal anaesthesia at Mthatha General Hospital in Eastern Cape, South Africa. Methods: Consecutive spinal anaesthesia performed in emergency and elective caesarean sections (n=200) from May to August, 2013 were included. The primary end was an outcome of the spinal anaesthesia. Demographic, obstetric, and anaesthetic data were collected to determine the factors associated with failed spinal anaesthesia. Results: Of the 197 participants included in the analysis, the frequency of failure of spinal anaesthesia was 11.7% (12.3% in emergency and 9.35% in elective Caesarean section). Prior anaesthesia (Relative risk [RR], 4.7; 95% Confidence interval [CI], 1.1-19.5), obesity (RR, 13.7; 95% CI, 5.4-34.7), dry tap of CSF (RR, 6.2; 95% CI, 2.5-15.2), bloody CSF (RR, 7.2; 95% CI, 2.6-20.4), and duration of work experience less than one year (RR, 4.1; 95% CI, 1.6-10.5) were associated with failed spinal anaesthesia. Multiple puncture attempts were associated with failed spinal anaesthesia. Hypotension and shivering occurred at higher rates of 39.1% and 16.2%, respectively in comparison to failed spinal anaesthesia. Conclusion: High frequency of failed spinal anaesthesia was observed in our practice setting. Risk factors for failure of spinal anaesthesia were; obesity, prior anaesthesia, bloody CSF and dry tap, and multiple puncture attempts. Training in general anaesthesia and protocols for managing other complications of spinal anaesthesia should be implemented in the hospital.
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    Prevalence of impacted third molar teeth in the greater Durban Metropolitan population.
    (2014) Ishwarkumar, Sundika.; Haffajee, Mohamed Rashid.; Pillay, Pamela.; Satyapal, Kapil Sewsaran.
    Tooth impaction is a pathological condition in which a tooth is completely or partially unerupted and positioned against another tooth, bone or soft tissue, thus preventing further eruption. Many theories have been proposed to explain the prevalence of impacted third molars. These theories discuss relationship of jaw size to tooth size which is suggested to result from difference in genetics and dietary habits, as the latter differs from one region to another. The aim of this study is to investigate the prevalence of an impacted third molar tooth on a mixed population in the Greater Durban Metropolitan area. The third molar was classified using Winter’s and Pell and Gregory’s classification schemes. Various morphometric parameters of the mandible were measured and assessed in 320 digital panoramic radiographs (n=640). Each parameter recorded was statistically analyzed, using SPSS, to determine if a relationship existed between the aforementioned parameters and sex and age of each individual. 77.9% of cases presented with at least one impacted third molar, with the most prevalent type of impaction being mesio-angulation in the mandible and vertical angulation in the maxilla. In respect to the level of impaction, class IIB and class A was most frequent in the mandible and maxilla, respectively. For correlation with sex, only the length of the mandibular ramus was statistically significant (p-value=0.000). No statistically significant relationship was found between each morphometric parameter and age. However, these results correlated with previous studies indicating that impacted third molars are most prevalent in individuals between 20-25 years. In addition, all morphometric parameters in this study differed from that recorded in previous studies conducted in the Northern Hemisphere. The findings of this study may assist maxillofacial surgeons, dentists, anatomists, anthropologist and forensic investigators.