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Left Atrial Myxoma in a Woman with Postpartum Heart Failure: The Culprit or an Incidental Bystander

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Case Reports in Clinical Medicine 2018年第1期7卷 63-69页

作者： Musa mohammed Baba mohammed abdullahi Talle Faruk Buba Kabir M. Fagge Department of Internal Medicine Federal Medical Centre Nguru Nguru Nigeria Department of Medicine College of Medical Sciences University of Maiduguri Maiduguri Nigeria Ma’aji Amar Muhammad Hospital Limited Hadejia Nigeria

Myxoma is a benign and the most frequent tumor of the heart, accounting for approximately 30% of all primary cardiac tumors. Seventy five percent of atrial myxomas are in the left atrium. We present a case of a 20-year-old house wife presenting with biventricular heart failure and chest infection five months after her last child birth. Transthoracic echocardiography showed a mobile left atrial echogenic mass measuring 4.6 × 4.0 cm attached to the interatrial septum. Left ventricular systolic function was mildly reduced (EF 48%) with mitral and tricuspid incompetence. A diagnosis of left atrial myxoma with biventricular heart failure with chest infection was made. She improved on antibiotics and treatment of heart failure, and referred to Aminu Kano Teaching Hospital for further management.

关键词： Myxoma Left Atrium Postpartum Heart Failure

Laryngeal Stenosis from Trapped Overflowed Head Scarf in the Wheel of a Moving Motor Cycle: A Case Report

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Case Reports in Clinical Medicine 2016年第10期5卷 347-352页

作者： Stanley Baba Amutta mohammed abdullahi Daniel Aliyu Caleb Manya Department of Otorhinolaryngology Usmanu Danfodiyo University Teaching Hospital Sokoto Nigeria

Introduction: Laryngeal stenosis is partial or circumferential narrowing of the endolaryngeal airway from congenital or acquired causes. It can present with life threatening upper airway obstruction, and the goal of treatment is restoration of good quality voice, respiration and laryngeal competence. We report a case of laryngeal stenosis following strangulation by a trapped overflowed head scarf, whilst being transported on a motor cycle and highlighted the treatment challenges. Methodology: A case of laryngeal stenosis studied, clinical findings, investigation results and treatment analysed. Results: A 70-year-old Nigerian elderly woman presented with three weeks’ history of hoarseness and progressive difficulty in breathing, following pulling of her long head scarf into the back wheel of the motor cycle taking her home. She had immediate loss of consciousness, which lasted for about 60 minutes. There was associated bout of cough while eating. Examination revealed life threatening upper airway obstruction. X-ray soft tissue neck showed soft tissue mass obliterating larygotracheal air column. Flexible nasopharyngolaryngoscopy showed grossly distorted laryngeal inlet with invisible vocal cords. CT scan of the larynx showed multiple and displaced fractures of the laryngeal cartilages. Microlaryngoscopy findings were pin-hole laryngeal lumen with firm collapsed mucosa. Emergency tracheostomy was done to relieve the upper airway obstruction. Attempts were made to excise the collapse mucosa and insert a stent proved difficult. Referral for endoscopic laser excision was caution because of the potential risk of aspiration. She was counselled and coping well with the tracheostomy.

关键词： Laryngeal Stenosis Strangulation Treatment Sokoto

中国与非洲贸易发展研究：基于商人视角的研究

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中国与非洲贸易发展研究：基于商人视角的研究

作者： ALIYU mohammed UMAR abdullahi 浙江大学

学位级别：硕士

近年来,随着国际政治经济格局不断发生着新的变化,作为一个正在不断成长和发展的新兴经济体,非洲正在走向国际舞台,成为各方重点关注的焦点,其在国际政治经体系当中扮演的角色也越来越重要。非洲的自然资源十分丰富,蕴藏着大量的石油和... 详细信息

近年来,随着国际政治经济格局不断发生着新的变化,作为一个正在不断成长和发展的新兴经济体,非洲正在走向国际舞台,成为各方重点关注的焦点,其在国际政治经体系当中扮演的角色也越来越重要。非洲的自然资源十分丰富,蕴藏着大量的石油和矿藏。非洲的自然环境十分特殊,造就了十分独特的自然景观,蕴藏着大量的优质旅游资源。国际上一些大型企业或者投资集团纷纷把非洲作为新一轮的投资对象和贸易伙伴。中国和非洲之间联系也越来越紧密,两者之间的关系已成为国际多边交往体系中的典范。当今社会和平与发展仍然是世界的两大主题。中国通过实施改革开放政策,综合国力显著增强,国际影响力不断提高,正在和平崛起。中国的和平崛起为非洲带来了重大的发展机遇。据中国海关2015年1月21日公布,2014年中国与非洲的进出口总额较2013年增长了5.5%,达到2221.8亿美元;其中,中国从非洲进口货物的总额为1157亿美元,中国向非洲出口货物的总额也突破千亿元大关。中国从非洲进口的货物主要是石油资源和一些稀有矿产资源,这对中国经济发展起到了有力的促进作用,尤其是油气资源和矿产资源对于中国持续推进工业化意义重大。然而,也有言论说中国在非洲的投资目的是搞新殖民主义,中国之所以加强和非洲合作是为了更快的抢占非洲市场,但是这一言论被中国在政治上的不干涉原则和实际行动所否定,事实是中国廉价的产品为当地低收入者带去了福音。事实上,随着中非之间各领域的交往不断的增进,中非之间的人员流动也不断加快。很多非洲商人不远万里来到中国经商、经营企业,也有许多中国商人前往非洲投资、贸易往来。本文通过收集资料,详细分析了中非商人所凭借的贸易渠道、贸易的主要活动区域以及双方所推广销售的产品分布情况,通过分析贸易经验指出增加市场份额的渠道。毋庸置疑,商人去一个陌生国家进行贸易往来要面临许多未知的挑战,例如在新的环境下要找到一个特定的“立足点”,打开业务并建立商业网络,需要了解当地贸易法律事务,甚至融入当地日常生活也是必不可少的成功因素。为此,本文重点对以下问题进行了深入研究：探讨中非商人在促进中非贸易中的作用,即分析中非商人如何在中非经贸发展中获得更多的机会,以获得更大的收益?揭示中非商人在促进中非贸易发展中存在的主要障碍及挑战,并指出相关解决方案和治理对策。本文共分为以下六个章节：第1章详细介绍了研究背景、研究框架和研究方法,并指出本文的创新之处和研究过程中存在的不足。第2章对相关贸易理论文献和中非贸易发展的理论与经验研究进行述评。第3章回顾中非贸易发展的历史与现状,着重对中非经贸关系在每一个时期的特点进行阐述。第4章对商人在中非贸易中所起的作用进行重点分析,并探讨该作用发挥过程中存在的主要障碍。第5章分析中非经贸发展面临的机会和挑战,并提出促进中非贸易发展的政策建议。第6章总结全文研究,并对中非商人促进中非贸易的未来前景进行展望。

关键词：中非贸易非洲商人发展前景

Metastatic Cervical and Supraclavicular Lymphadenopathy from Prostate Mimicking Lymphoma: A Case Series

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Open Journal of Urology 2019年第6期9卷 93-101页

作者： Abubakar Sadiq Muhammad Ngwobia Peter Agwu abdullahi Abdulwahab-Ahmed Khalid abdullahi Kabiru abdullahi Ahmed mohammed Umar Ismaila Arzika Mungadi Urology Unit Departments of Surgery Usmanu Danfodiyo University Teaching Hospital Sokoto Nigeria Urology Unit Departments of Histopathology Usmanu Danfodiyo University Teaching Hospital Sokoto Nigeria

Prostate cancer is the second most common cancer in men worldwide and the commonest cause of mortality in men. It is the commonest diagnosed cancer in African men. The earliest and common sites of metastasis are the axial skeleton and regional lymph nodes. Initial presentation of the metastatic disease with cervical or supraclavicular lymphadenopathy is rarely reported. We report 3 cases of metastatic cancer of the prostate presenting initially to physicians with huge cervical and supraclavicular lymph nodes enlargement which on biopsy revealed metastatic adenocarcinoma. On further evaluation, there were non-bothersome storage symptoms, elevated prostate specific antigen and abnormal digital rectal examination. Transrectal ultrasound (TRUS)-guided biopsy of hypoechoic nodules revealed high-grade adenocarcinoma of the prostate on histopathological examination. The cervical and supraclavicular lymphadenopathy resolved after commencement of androgen deprivation therapy. We advocate for prostate cancer screening in African men above 50 years of age presenting with cervical or supraclavicular lymphadenopthy to primary care physicians even in the absence of lower urinary tract symptoms.

关键词： Metastasis Cervical Lymphadenopathy Supraclavicular Lymphadenopathy Cancer of the Prostate Lymphoma Mimicker

Penetrating Abdominal Injuries: Pattern and Outcome of Management in Khartoum

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International Journal of Clinical Medicine 2014年第1期5卷 18-22页

作者： Maha Yassin Omer Aamir abdullahi Hamza mohammed Toum Musa Department of Surgery College of Medicine & Health Sciences Bahri University Khartoum Sudan Department of Surgery Faculty of Medicine Al Neelain University Khartoum Sudan Department of Surgery Faculty of Medicine Khartoum University Khartoum Sudan

Background: The pattern and presentation of penetrating abdominal trauma vary according to places and the structure of the present health system. As well controversies in management exist ranging from mandatory exploration to selective non-operative management. Objectives: To determine the pattern of penetrating abdominal trauma, current management practiced and outcome in Khartoum. Patients and Methods: The study was prospective, descriptive and hospital-based. It was carried out at the main three hospitals in Khartoum State. It was conducted over a period of one year from 2012 Mar to 2013 Mar. All patients who presented penetrating injury to their abdomen were included. Results: The study included 85 patients with a mean age of 28 years (SD ± 10). The male to female ratio was 11:1. Most of the patients (89.4%) were in the first four decades of their life. Twenty-three patients (27.1%) presented shock. Stab wound is the commonest mode of trauma seen in 83.5% of our patients. The majority of our patients were managed by exploratory laparotomy (81.2%), however 16 (18.8%) underwent conservative measures. Of the operated group, solid organ injuries were found in 22.9%, yet hollow viscous injuries were reported in 86.9% of the patients. Registrars operated on 78.26% of the patients. The rate of negative laparotomy of this study was 8.7%. Complications and mortality were encountered in 25.9% and 4.7% respectively. The mean hospital stay was 8.47 days (SD ± 10.6). Conclusion: This study demonstrates no difference in the pattern of intra-abdominal injuries. The rate of operative treatment is acceptable, but more laparotomies can be avoided if the haemodynamic stable patients without features of peritonitis were given a period of observation. The overall outcome was satisfactory.

关键词： Mandatory Laparotomy Mortality Non-Operative Management Penetrating Abdominal Injuries

In vivo combination therapy of chloroquine and stigmasterol against Plasmodium berghei induced pathologies in mice

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Journal of Hainan Medical University 2020年第17期26卷 10-16页

作者： Auwal adamu Muhammad A.Saliu abdullahi A.Dantani Yaqub Nimat Hauwa T.Giaze Najib Musa Buba Hussena Morik Dorathy Ahmad M.Kandi Musa Daniel mohammed Auwal Ibrahim Department of Biochemistry Ahmadu Bello UniversityZariaNigeria

Objective:To investigate the effect of combination therapy of chloroquine and stigmasterol on Plasmodium(P.)berghei malaria-induced organ ***:Totally 35 mice weighing 20-30g were placed into 7 groups of 5 mice each and distributed as uninfected administered 100 mg/kg BW stigmasterol,uninfected administered only feed and water ad libitum,infected with *** and administered 50 mg/Kg BW stigmasterol,100 mg/kg BW stigmasterol,100 mg/kg BW stigmasterol plus 5 mg/kg BW chloroquine,and 5 mg/kg BW *** last group of mice served as *** infected and not treated *** levels of parasitemia,packed cell volume,and other biochemical parameters were ***:Combination therapy of *** infection with stigmasterol and chloroquine did not significantly(P>0.05)reduce parasitemia level while stigmasterol treatment alone significantly(P0.05)altered upon treatment with both doses of stigmasterol as well as the combination ***:This study concluded that the combination of stigmasterol and chloroquine could combat anemia and some organ pathologies associated with *** infection.

关键词： Malaria Stigmasterol Chloroquine Plasmodium berghei Organ pathologies

内分泌干扰物的环境危害：雌激素及其硫酸盐在土壤中的吸附规律

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吉林大学学报（地球科学版） 2013年第2期43卷 573-581页

作者： Alkali mohammed 杨悦锁杜新强杨明星 abdullahi Musaa 吉林大学环境与资源学院长春130021 卡迪夫大学地球科学学院英国卡迪夫CFIO3YE 纳萨拉瓦州立大学环境科学学院尼日利亚凯菲PMB1022

雌激素（E1）及其硫酸盐化合物（E1-3S）是能改变生物机体内分泌功能并对机体引起有害效应的内分泌干扰物,主要表现为危害人类的生殖机能、造成发育异常及引发某些癌症等。其大量存在于直接暴露的放牧草场中,主要是动物粪便中。由于雌... 详细信息

雌激素（E1）及其硫酸盐化合物（E1-3S）是能改变生物机体内分泌功能并对机体引起有害效应的内分泌干扰物,主要表现为危害人类的生殖机能、造成发育异常及引发某些癌症等。其大量存在于直接暴露的放牧草场中,主要是动物粪便中。由于雌激素性质不稳定,当被土壤吸附后易被代谢为其他物质,造成了对土壤吸附作用过高的估计,使得难以准确评估其对人体的危害程度。为此,笔者以质量浓度为555mg/L的CaCl2溶液（混合态）以及动物尿液（自由态）2种不同类型溶液作为雌激素载体,研究了尼日利亚纳萨拉瓦州3个不同地区农业土壤介质对不同形态雌激素的吸附规律。结果表明：2类物质的吸附均符合Freundlich非线性等温线过程,土壤对E1-3S的分配系数（2.4～6.4L/kg）比E1（34.2～46.8L/kg）中小一个数量级;3种土壤中,由于有机碳质量分数（分别为Lafia：8.2%;Doma：4%;Azara：5%）、矿物成分以及pH值的不同,致使它们对物质的吸附系数差别较大;雌激素在相同土壤、不同溶液中的吸附系数差别也较大,其在Azara土壤中CaCl2溶液及动物尿液中的分配系数分别为71.7L/kg和39.8L/kg。传统方法中以CaCl2溶液作为载体获得的吸附含量用于评价雌激素污染风险是不合理的,需采用实际载体溶液进行的实验结果才有应用价值。

关键词：雌激素雌激素硫酸盐吸附缓冲溶液有效分配系数

Giant Retropharyngeal Abscess in a Nigerian Adult Following Fish Bone Throat Injury

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International Journal of Otolaryngology and Head & Neck Surgery 2013年第6期2卷 271-275页

作者： Stanley B. Amutta Daniel Aliyu mohammed abdullahi mohammed Danfulani Yunusa A. Mufutau ENT Department Usmanu Danfodiyo University Teaching Hospital Sokoto Nigeria Psychiatry Department Usmanu Danfodiyo University Teaching Hospital Sokoto Nigeria Radiology Department Usmanu Danfodiyo University Teaching Hospital Sokoto Nigeria

Retropharyngeal abscess (RPA) is an uncommon disease entity that typically occurs in children under 5 years of age, which has the potential to cause upper airway obstruction. Upper respiratory tract infection is the most common predisposing factor to RPA in children while cervical spine tuberculosis and trauma are the major aetiological factors in the adult. We report a case of a 21-year-old Nigerian farmer with giant retropharyngeal abscess following fish bone throat injury causing life-threatening upper airway obstruction. The patient responded well to emergency tracheostomy, intraoral surgical drainage and empirical antibiotic therapy. We highlight the diagnostic and therapeutic challenges of managing such a patient.

关键词： Giant Retropharyngeal Abscess Fish Bone Tracheostomy Antibiotic Intra-Oral Drainage

Effect of Steel Fiber on Concrete’s Compressive Strength

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Open Journal of Civil Engineering 2023年第1期13卷 192-197页

作者： mohammed Saed Yusuf Abdirisak Bashir Isak Guled Ali Mohamud abdullahi Hashi Warsame Yahye Ibrahim Osman abdullahi Husein Ibrahim Liban Abdi Aziz Elmi Department of Civil Engineering Hormuud University Mogadishu Somalia

The general goal of this research is to investigate whether steel fiber has a significant “positive” or “negative” influence on concrete compressive strength, as well as the optimal steel fiber ratio that delivers best result. Manually, cement, fine aggregates, coarse aggregates, steel fibers, and water were mixed together properly. A slump test was carried on the mixed concrete. After determining the workability, the mixed concrete was poured into cubes dimension 150 mm × 150 mm × 150 mm and left for 24 hours. After 24 hours, the samples were removed from the mold and placed in a water tank to cure for 7 to 28 days. The cube was tested for compressive and flexural strength in a universal testing machine after the samples had cured for the required 7 - 28 days. This study focuses on how to obtain high strength concrete using with steel fiber in the Conventional mix ratio to enhance concrete strength. Concrete reinforcement using steel fibers alters the characteristics of the concrete, allowing it to withstand fracture and hence improve its mechanical qualities. This study reports on an experimental study that reveals the effect of steel fiber on concrete compressive strength and the optimal steel fiber ratio that produces the best results. Steel fiber reinforcing improved the compressive strength of concrete. The average compressive strength of normal M25 concrete with 0% steel fibers and curing ages of 7 and 28 days was determined to be 22.97 N/mm2 and 25.78 N/mm2, respectively. The steel fibers are then added in various concentrations, such as 1%, 2%, and 3%, with aspect ratios of 70. The compressive strength of concrete with 1%, 2%, and 3% steel fiber with an aspect ratio of 70 was examined at 7 days and found to be 23.96, 24.80, and 26.14 N/mm2 correspondingly.

关键词： Steel Fiber Reinforced Concrete Fiber Reinforcement Compression Strength of Concrete Improvement Compression Strength