Diagnosis of Acute Appendicitis in Sub-Saharan Africa

Ouedraogo, Nina-Astrid Nde; Ouédraogo, S. M.; Kambou, Bénilde Marie Ange Tiemtore; Ouedraogo, Adams; Sanou, A

doi:10.4236/ojmi.2018.81001

Cited by 2 publications

(3 citation statements)

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“…[34][35][36][37] On the other hand, the percentage of patients who had a score of four and less was smaller in our study compared to other reports. [36][37][38][39] The overall sensitivity of Alvarado score in this study was found to be similar with a result from one systematic review and another report from Morocco but significantly higher when compared to reports from Jordan, Tunisia, and Pakistan. 37,40,[44][45][46] On the other hand, the overall specificity of this score in our study (55.6%) was lower when compared to other reports in which it was in the range of 75-92.3%.…”

Section: Discussionsupporting

confidence: 87%

“…The predominance of men seen in this study is also reflected in other reports. [36][37][38][39][40][41][42] Our patients were found to be relatively young when compared to other study participants in studies done elsewhere while other scholars reported a comparable mean age with our patients. [38][39][40]42,43 The mean Alvarado score in this study was found to be similar with a study from Qatar while it was higher compared to reports from India and Pakistan.…”

Section: Discussionsupporting

confidence: 61%

“…[36][37][38][39][40][41][42] Our patients were found to be relatively young when compared to other study participants in studies done elsewhere while other scholars reported a comparable mean age with our patients. [38][39][40]42,43 The mean Alvarado score in this study was found to be similar with a study from Qatar while it was higher compared to reports from India and Pakistan. 40,42,43 The majority of our study participants (61.7%) had an Alvarado score of seven and above which was much lower than a report from Morocco (91%).…”

Section: Discussionsupporting

confidence: 61%

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Diagnosis of Acute Appendicitis: A Cross-sectional Study on Alvarado’s Score from a Low Income Country

Gebreselassie¹,

Zeleke²,

Ashebir³

2023

OAEM

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Background Alvarado score is the most widely used scoring system for diagnosing acute appendicitis, globally. There have been concerns regarding the diagnostic accuracy of this score as it was shown to have lower sensitivity in certain populations like Blacks and Asians. Despite its wide clinical use in the Ethiopian set up, the diagnostic accuracy of this score remained largely unexamined in this population. Methodology A prospective cross-sectional study was conducted and all adult patients who presented with right lower quadrant abdominal pain and evaluated with a clinical impression of acute appendicitis were enrolled in the study. Data was collected by trained surgical residents over a period of six months (August 2019 – January 2020) and analysed using SPSS version 25. Results A total of 235 patients were enrolled in this study among whom two thirds were males. The majority of the study participants (61.7%) had an Alvarado score of ≥7 while almost a quarter of them had a score of <4. The mean Alvarado score in this study was 7 ± 1.8 whereas the median and the mode were 7 and 9 respectively. The overall sensitivity, specificity, positive predictive value and negative predictive value of Alvarado score were 99.1%, 55.6%, 98.2% and 62.5% respectively. The sensitivity and specificity of this score was superior in males compared to females (99.3% vs 97.6% and 80% vs 25%). A score of ≥5 was found to have a sensitivity of 98.4%. Conclusion Alvarado score was found to have good sensitivity and positive predictive value in this study. A score of ≥5 can be used to “rule in” the diagnosis of acute appendicitis. Hence, the use of Alvarado score’s in the Ethiopian setup is to be encouraged.

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Section: Discussionsupporting

confidence: 87%

Section: Discussionsupporting

confidence: 61%

Section: Discussionsupporting

confidence: 61%

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Diagnosis of Acute Appendicitis: A Cross-sectional Study on Alvarado’s Score from a Low Income Country

Gebreselassie¹,

Zeleke²,

Ashebir³

2023

OAEM

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Petrogenetic links between rare metal-bearing pegmatites and TTG gneisses in the West African Craton: The Mangodara district of SW Burkina Faso

Bonzi

Vanderhaeghe

Lichtervelde

et al. 2021

Precambrian Research

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We describe the geological context of rare metal-bearing pegmatites from the Mangodara district (South-West Burkina Faso, Paleoproterozoic West African Craton) and discuss their petrogenesis and links with the host rocks. The Mangodara district exposes a gneiss-granitoid complex structured in a regional-scale dome, mantled by granodioritic gneiss enclosing rafts of amphibolite, micaschist and paragneiss, and cored by tonalitic to trondhjemitic gneisses. These gneisses enclose granitoid plutons, and four populations of rare metal-bearing pegmatites: titanite-allanite-, apatite-zircon-, garnetcolumbite (Li, Nb) and garnet-REE (Ti, Y, HREE)-bearing varieties.2 Rafts of migmatitic amphibolite, micaschist and paragneiss are chemically equivalent to nearby Birimian greenstone belts. An origin of the gneiss-granitoid complex by partial melting is suggested by diffuse contacts of rafts with the gneisses as well as the presence of garnet-bearing or hornblendebearing leucosome in paragneiss and in amphibolites, respectively. Textural continuity between pegmatites and granitic veins concordant to the foliation of the gneisses point to syntectonic segregation of the pegmatite-forming magmas.The compositions of gneisses and plutonic rocks spread between a Na-rich pole and a K-rich pole.Granodioritic gneiss, hornblende-biotite granodiorite and potassic biotite granitoids define a K-rich series attributed to relatively low-pressure high-degree partial melting of dominantly paragneiss, which accounts for low to absent LILE and HFSE fractionation compared to the paragneiss. Tonalitictrondhjemitic gneiss, a trondhjemite and a peraluminous two-mica tonalite belong to a Na-rich series characterized by low K content and strong depletion in REE and HFSE, which might reflect plagioclase clustering after partial melting at a relatively high pressure of amphibolite, and fractionation of HFSE-REE-bearing minerals.U-Pb dating of zircon from a titanite-allanite-bearing pegmatite at 2094.3 ± 8.8 Ma and of apatite from tonalitic-trondhjemitic gneiss, apatite-zircon-bearing pegmatite and granodioritic gneiss at 2094 ± 21 Ma, 2055 ± 20 Ma, and 2041 ± 33 Ma respectively, confirm that partial melting, melt segregation and crystallization-cooling occurred during the Eburnean orogeny.Based on these data, we propose that (i) titanite-allanite-and apatite-zircon-bearing pegmatites result from syntectonic segregation of residual melt during crystallization of the tonalitic-trondhjemitic gneiss, (ii) garnet-columbite-bearing pegmatites originate from syntectonic melt segregation from the migmatitic paragneiss, and (iii) garnet-REE-bearing pegmatites derive from segregation of a residual melt within the granodioritic gneiss.

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Diagnosis of Acute Appendicitis in Sub-Saharan Africa

Cited by 2 publications

References 10 publications

Diagnosis of Acute Appendicitis: A Cross-sectional Study on Alvarado’s Score from a Low Income Country

Diagnosis of Acute Appendicitis: A Cross-sectional Study on Alvarado’s Score from a Low Income Country

Petrogenetic links between rare metal-bearing pegmatites and TTG gneisses in the West African Craton: The Mangodara district of SW Burkina Faso

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