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Natural Resources 2024年第3期15卷 61-68页

作者： Amadou Issoufou Abdourhimou moussa boubacar Habou Rabiou Soumana Idrissa Mahamane Ali Faculté des Sciences Agronomiques Université de Diffa Diffa Niger Institut National de la Recherche Agronomique du Niger Niamey Niger Faculté des Sciences et Techniques Université Abdou Moumouni de Niamey Niamey Niger

Information on the dynamics of savannah is important to a country's plan to overcome the problems of uncontrolled development and environmental hazards. Taking the reserve partielle de Dosso, Niger as the case study area, this paper analyzed the long-term land use land cover change from 2002 to 2022. Satellite images were processed by using Google Earth Engine (GEE). Therefore, four major land cover classes were identified based on spectral characteristics of Land sat, namely, built-up, vegetation, cropland, bare land and water. The result revealed that barren and built-up areas increased at the expense of vegetation and water. From the four major land use land cover the large area is covered by vegetation which comprises about 192963.5 hectares followed by cropland and water consisting of 32506.43 and 1596.4 hectares respectively. The built-up area gained substantial area (most) during the study period. The reduction in some of the land cover/uses underlines the dangerous trend of the pressure poised by population growth and the changing functionality. Land cover change is influenced by a variety of societal factors operating on several spatial and temporal levels. The area estimates and spatial distributions of the LULC classes produced from the current study will assist local authorities, managers, and other stakeholders in decision-making and planning regarding forest land cover and uses.

关键词： Land Use/Cover Change Detection Classification Dosso

Spatio-Temporal Dynamics of Land Use Units in the Kadzel Sub-Catchment Basin in Diffa, Niger

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Journal of Geographic Information System 2024年第4期16卷 259-275页

作者： Karema Ary Madou Kaoulé moussa Mamoudou boubacar Amadou Issoufou Abdorhimou Mahamane Ali Faculty of Agronomic Sciences University of Diffa Diffa Niger Faculty of Science and Technology Abdou Moumouni University of Niamey Niamey Niger

Environmental degradation linked to land occupation and use, such as climate change and anthropogenic activities, has led to the modification of the landscape units of the Kadzel sub-watershed. The objective of this study is to analyze the dynamics of land use units in the Kadzel area in Diffa between 1992 and 2022 and to propose a future scenario for sustainable environmental management. The approach used relies on remote sensing and geographic information systems to analyze the dynamics of land use units. Additionally, the Markov Cellular Automata (CA) model was used to predict future land use. The land cover maps were produced from a supervised classification by maximum likelihood based on the true and false color compositions of bands 4/3/2 (TM5), 3/2/1 (ETM+) and 7/5/4 (8 OLI). Ten occupation classes were discriminated. Between 1992 and 2022, there was a decrease in the areas of irrigated crops (4.91% and 2.88%), of shrubby tree steppes (14.31% and 9.48%), field-fallow complexes (22.23% and 10.52%), and degraded areas. Grassy steppes (25.76% and 13.32%). However, this reduction has been beneficial for wastelands, urban areas and bodies of water. Based on predictive modeling, it is predicted that by 2052, urban areas, fallow field complexes and bare soils will constitute the main types of housing units. The regressive trend in natural resources appears to continue into the future with current land use practices.

关键词： Occupation Dynamics Environmental Problems Population Growth Lake Chad and Kadzel Basin

Trends of Land Use and Land Cover Change in the Savannah Ecological of the Protected Area Reserve Partielle de Dosso, Niger

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Unusual Brain Trauma Injury

Natural Resources（自然资源） 2024年第3期 61页

作者： Amadou Issoufou Abdourhimou moussa boubacar Habou Rabiou Soumana Idrissa Mahamane Ali

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Open Journal of Modern Neurosurgery 2024年第3期14卷 218-227页

作者： Diallo moussa Traoré Youssouf Kanikomo Drissa Diarra Sounkalo Izoudine B. Koumaré Sogoba Youssouf Sogoba boubacar Diallo Oumar Gabriel Tour Teatching Hospital Bamako Mali Bocar Sidy Sall Teatching Hospital Kati Mali Hopital du Mali Teaching Hospital Bamako Mali

Unusual head trauma is rare with various mechanisms of occurrence. The injuries can be similar to those of road accidents but sometimes with significant complexities. The objective was to determine the frequency of this pathology in our practice, describe the different mechanisms and report the craniocerebral lesions caused by this type of trauma. Materials and Method: This was a descriptive study with retrospective collection spread over a period of 3 years. After selecting the files, the patients and/or their companions were contacted by telephone to inquire about them and then returned to the consultation for reassessment. Disease history and information were obtained from patients’ medical records. Result: The frequency of this pathology was 1.78% and his incidence was 0.4 cases per month. The average age of the patients was 13.47 years. All the victims were male. 41.17% of patients were in school. The mechanisms of trauma were the hoof blow 47.1%, the horn blow 29.4% and the stone blow 11.7% respectively. 23.5% of patients were confused and 11.7% children were in coma. One patient presented an anisocoria. The motor deficit was present in 5 cases. CT-scan made it possible to highlight a skull depressing fracture 58.8% and confirm a craniocerebral wound in 35.3%. The average time between patient admission to hospital and completion of surgery was 24.5 hours. The surgery had consisted of the trimming of cranio-cerebral wounds, exploration, duroplasty and lifting of skull depressing fracture. After 15 months of follow-up, the evolution was favorable in 53.3%, the morbidity was 33.4% and the mortality 17.6%. Conclusion: These are rare but serious conditions because they are fatal and disabling. An early and multidisciplinary management can hope to have a good favorable.

关键词： Brain Trauma Injury Insolite Unusual Skull Depressing Fracture Hoof Kick Horn Blows Stone Bows Motorcycle Gear Lever

Bilharzia Appendicitis: Incidence in a Commune in Mali, about 3CAS

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Surgical Science 2024年第5期15卷 321-329页

作者： Souleymane Bingue Dembélé Yely Dianessy moussa Samake Abdou Guiré Siaka Konaté Ousmane Sy boubacar Yoro Sidibé Amadou Maïga Thiorno Nadio boubacar Karembe Amaguiré Saye Sirama Diarra Dorcas Sodjiné Yede Issiaka Diarra Ibrahima Maiga Mahamane Dicko moussa Konaté Aliou Bina Diarra Bakary Tientigui Dembélé General Surgery Department of the District Hospital of Commune IV of Bamako Bamako Mali Kolondié ba Reference Health Centre Sikasso Mali Epidemiology and Clinical Research Bamako Mali General Surgery Department of Gabriel Touré University Hospital Bamako Mali Ophthalmology Department of the District Hospital of Commune IV of Bamako Bamako Mali Gynecology and Obstetrics Department of the District Hospital of Commune IV of Bamako Bamako Mali Commune I of the District of Bamako Reference Health Centre Bamako Mali Imaging Department of the District Hospital of Commune IV of Bamako Bamako Mali Commune VI of the District of Bamako Reference Health Centre Bamako Mali Anotomy-Pathology Department of the G Point University Hospital Bamako Mali

Appendicitis bilharzia is a very rare condition and we report 3 cases of this pathology that sense clinical and biological similarities with bacterial appendicitis. The etiological diagnosis was exclusively histopathological, this allowed to highlight eggs of Schistosome in the appendicular wall in the three patients. The surgical treatment was supplemented by a specific medical treatment based on praziquantel. The surgical suites were simple for 2 patients, complicated by superficial parietal suppuration in a patient.

关键词： Bilharzial Appendicitis Endemic Histopathology Specific Antiparasitic Treatment

Acute Leukemia in Niger: Epidemiological, Diagnostic and Therapeutic Aspects

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Open Journal of Blood Diseases 2024年第3期14卷 81-90页

作者： Amadou Djibrilla-Almoustapha Badé Malam-Abdou Abdourahamane Yacouba moussa Souley Moustapha Maman Brah Moustapha Elhadji-Chefou boubacar Marou-Soumana Samaila Aboubacar Ousseini Fanta Maman Rabiou Badé Oumarou Adamou-Chaibou Department of Hematology-Oncology National Hospital of Niamey Niamey Niger Faculty of Health Sciences University of Abdou Moumouni Niamey Niger Department of Medicine Zinder Hospital Regional Niger Departtment of Biology Amirou Boubacar Diallo National Hospital Niamey Niger Faculty of Health Sciences University of Dan Dicko Dankouloudo of Maradi Maradi Niger Laboratory of Biology National Hospital of Niamey Niamey Niger

Objective: Improve the care of patients followed for acute leukemia in the Oncohematology department of the National Hospital of Niamey. Methods: This was a prospective study, over a period of 2 years from January 1, 2018 to December 31, 2019, in patients with acute leukemia in the Oncohematology department of the National Hospital of Niamey (HNN), whose diagnosis was made on a blood smear associated with a myelogram and immunophenotyping and who were consenting. Results: We collected 25 cases of acute leukemia confirmed by myelogram and immunophenotyping. The mean age of the patients was 31.32 years, with a predominance of women, a sex ratio of 0.92. Pupils and students were in the majority with 40% and most came from the Niamey region, i.e. 68%. Anemic syndrome was the most common clinical sign in 96%. ALL predominated in 64% of cases. On the blood count, the hyperleukocytosis was more marked in AML (mean white count: 197256.6 elts/mm3) than in ALL (137891.6 elts/mm3), it was the same for thrombocytopenia which is more marked in AML (75588.89/mm3) than in ALL (52156.25/mm3). Therapeutically, 52% of patients received chemotherapy. The mean overall survival was 16.223 ± 3.191 months, including a mean survival for AML of 6.853 ± 1200 months compared to 21.720 ± 5.920 months for ALL. Conclusion: Acute leukemia still remains a major problem in our context, due to the precariousness of limited financial, diagnostic and therapeutic resources. Thus reflecting in our results, the increasing number of cases, the diagnostic delay and the guarded prognosis. This is the reality in several other countries in the sub-region and even in certain developed countries.

关键词： Acute Leukemia ALL AML Hematology-Niamey National Hospital (HNN) Niger

Clinical and Bacteriological Profile of Infections in Sickle Cell Children in Two Referral Hospitals in Niamey, Niger

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Open Journal of Pediatrics 2024年第1期14卷 36-42页

作者： Kamaye Moumouni Samaila Aboubacar Garba Moumouni Georges Thomas Ibrahim Mamoudou Abdou Djafar Mamane Halima Hamadou Ibrahim Hamani Issaka Djibrilla Almoustapha Amadou Yacouba Abdourahamane Marou Soumana boubacar moussa Saley Sahada Bade Malam Abdou Soumana Alido Service de Pédiatrie A H&#244pital National de Niamey Niamey Niger Faculté des Sciences de la Santé Université Abdou Moumouni de Niamey Niamey Niger Service de Pédiatrie H&#244pital national Amirou Boubacar Diallo Niamey Niger Service d’Onco-Hématologie H&#244pital national de Niamey Niamey Niger Service de Biologie Médicale H&#244pital national Amirou Boubacar Diallo Niamey Niger

Introduction: Infections are significant causes of mortality in sickle cell children in resource-limited countries. This study aimed to determine the clinical profile and bacterial ecology of infections in children with sickle-cell disease in two referral hospitals in Niamey. Patients and methods: A retrospective descriptive study was conducted from January 2018 to July 2020 in two referral hospitals in Niamey. All children aged one (1) to 15 years with sickle cell disease admitted for suspected infection, including at least one bacterial culture, were studied. Bacteriological analysis was performed using the appropriate culture media, using BactAlert (Reference 4700003 BTA3D60 BioMérieux). Results: Over 36-months, 350 children with a mean age of 10.9 months were admitted. The sex ratio was 1.2. The SS electrophoretic profile was the most common (93.4%). Immunization status was up to date in 66% of patients. Fever was the common reason for consultation (55.1%). Infection was confirmed in 62 patients (17.7%). The primary diagnoses were bacterial gastroenteritis (24.2%) and urinary tract infection (19.4%). Blood cultures were isolated from Salmonella typhi (13.0%) and Escherichia coli (8.7%). Klebsiella spp (7.1%) and Escherichia coli (5.0%) were detected in cytobacteriological examination of urine. Salmonella typhi (23.5%) and Escherichia coli (5.9%) were isolated on coproculture. Conclusion: Bacterial ecology appears not different from that usually observed in sickle-cell children. Salmonella and Escherichia coli were predominant.

关键词： Sickle Cell Disease Child Infection Niger

Liposarcoma Retro-Peritoneal in the General Surgery Department of the Hospital of the District of the Commune IV

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Surgical Science 2024年第7期15卷 430-437页

作者： moussa Samaké Souleymane Bingué Dembelé Yely Dianessy Abdou Guiré Dorcas Laurel Sodjiné Yede Youssouf Boiré Mahamane Dicko Mantia Sara Nouhoum Sanogo Amaguiré Saye Sirama Diarra Brahima Dembele Thierno Nadio Ibrahima Maiga Modibo Diarra Siaka Konaté Birama Cheick Traoré boubacar Diassana Bathio Traoré Amadou Maiga boubacar Yoro Sidibé Adégné Togo General Surgery Department of Bamako District IV Hospital Bamako Mali Anesthesia and Resuscitation Service of the Hospital of the District of the Commune IV of Bamako Bamako Mali Anatomopathology Department of the CHU of Point G Bamako Mali Obstetric Gynecology Department of the Bamako District IV Hospital Bamako Mali Department of Ophthalmology of the Hospital of the District of the Commune IV of Bamako Bamako Mali Imaging Service of the Bamako District IV Hospital Bamako Mali Internal Medicine Department of the District Hospital of Commune IV of Bamako Bamako Mali General Surgery Department Kolondjeba Referral Health Centre Sikasso Mali Gynecology and Obstetrics Department of the San Reference Health Center Segou Mali General Surgery Department of Sikasso Hospital Sikasso Mali General Surgery Department of the Gabriel Tour University Hospital Bamako Mali

Retroperitoneal soft tissue sarcomas in the retroperitoneal/intra-abdominal regions represent 10% - 15% of all cases of soft tissue sarcoma. Liposarcomas, which are the most common histological type, account for 20% - 45% of retroperitoneal/intra-abdominal sarcoma cases, and 20% of liposarcomas cases are primary retroperitoneal liposarcomas. Surgical resection in case of malignancy remains the treatment of choice for liposarcomas, according to the guidelines of most major international companies. Our goal was to improve the management of retroperitoneal liposarcoma. This was a 65-year-old patient, with no medical or surgical history, who was referred to us for abdominal swelling, in whom clinical and paraclinical examination found retroperitoneal liposarcoma stage IV, and the surgical treatment consisted in making a tumor reduction. Conclusion: Retro-peritoneal liposarcoma is an undervalued malignant tumor, and the diagnosis is often late.

关键词： Retroperitoneal Liposarcoma Diagnostic Delay

Results of the First 10 Cases of Coronary Bypass Surgery in Senegal

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World Journal of Cardiovascular Surgery 2024年第4期14卷 45-60页

作者： Papa Amath Diagne Jean Claude Ndiogou Dione Papa Ousmane Ba Momar Sokhna Diop El Hadji boubacar Ba Momar Dioum Marième Soda Mbaye moussa Seck Diop Mory Camara Abdou Lahad Mbengue Abdou Aziz Thiaw Abdoul Khoudoss Diallo moussa Mareme Samba Dialtabé Ibrahima Guéssé Ba Anta Mbaye Sall Papa Salmaneba Amadou Gabriel Ciss Department of Cardiovascular and Thoracic Surgery FANN National University Hospital Dakar Senegal

This is a review of the first 10 coronary artery bypass surgeries performed by the local team. The mean age was 62 years old [45 - 74]. The patients were predominantly male, with a M/F ratio of 4:1. Cardiovascular risk factors were mainly myocardial infarction (MI) (60%), hypertension (50%), obesity (40%) and diabetes (30%), with at least two risk factors per patient. Angina was the main symptom (80%). The average time from presentation to surgery was 8 months. The mean Euroscore 2 was 2.92 ± 1.65 [1.33 - 6.60]. Coronary angiography revealed an average of 2 lesions per patient, with 3-vessel involvement in 70% of cases: the Interventricular artery (IVA) (100%), the right coronary artery (90%) and the circumflex artery (70%). On echocardiography, the mean Left ventricular ejection fraction (LVEF) was 59% [33% - 76%]. All patients underwent median sternotomy with bypass grafting. The average duration of the cardiopulmonary bypass was 150 min [46 - 275 min];that of aortic clamping, 120 min [43 - 232 min]. The grafts used were internal thoracic artery (ITA) in 100% of cases (80% on the left and 20% on the right), and the great saphenous vein (GSV) in 60% of cases (50% on the left and 10 on the right). Double bypass was performed in 60% of cases, single bypass in 30% and triple bypass in 10%. The bypasses were performed on the IVA (100%), the middle lateral of the circumflex (30%) and the bisector (20%). The average time to extubation was 11 hours and the length of stay in the intensive care unit was 7 days [03 - 17 days]. One patient had a reoperation on Day 0 post-op. The average hospital stay was 13 days [06 - 27 days]. Complications occurred in nine of the patients (90%), with a predominance of infectious and neurological complications. Overall operative mortality was 3%, all in intensive care.

关键词： Coronary Bypass Surgery Coronary Lesions Cardiac Surgery Senegal

Unusual Brain Trauma Injury

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