Remote Sensing and River Basin Management: An Expository Review with Special Reference to Southwest Nigeria

This chapter is part of the focus on the development in river basin management, and its specific objective is to provide an expository review of drainage basin morphometry and the relevance of remote sensing technology, especially for locations in developing countries, where sophisticated remote sensing technology are either expensive or challenged by limited professionals. The chapter is divided into six subsections, treating issues on remote sensing, drainage density and presenting specific case study, among others. The study reveals that remote sensing technology is efficient for providing decision support system for both gauged and ungauged river basins, and that freely available remote sensing data can efficiently fill the data gaps in many developing countries. It however warned on the need to consider variations in sensors capacity and mission as important attributes that can generate different spatial radiometric issues which may negatively affect the quality of the results. It concluded that researchers on drainage basin analysis in developing countries will benefit immensely from the freely available remote sensing data in the region

Facilities/Services Provided and Residents’ Satisfaction- A Case Study of Oyo State Housing Corporation Site and Services Schemes, Ibadan

This paper examines Facilities/Services provided and Residents’ Satisfaction using Oyo State Housing Corporation Site and Services schemes as a case study. Primary data were collected with questionnaires administered and retrieved from 207 residents. Frequency distribution percentage table and 5points Likertsacle were used to analyse data. The study established that the proportion of male and female residents on the schemes were 56.0 and 44.0% respectively and 33.3% of the residents earned an annual income of between N221,040 and N1,062,672. All (100%) respondents are literate and are such well-informed; whose length of stay in the estates is of long period and therefore can be relied upon to give adequate data to determine resident satisfaction of the study area.The services and facilities provided in schemes were road, electricity, potable water, drainage, street lightening, sewage system, community hall, schools, transportation system, police station, worship centres and  fire station  representing  90.3%,88.5%,18.4%,59.4%,15.9%,27.5%,22.7%,70%,5.8%,43%,68.1% and 5.3% respectively. Out of these services/facilities, Schools and Road were in good condition ; with mean ratings of 3.21 and 3.03 respectively compared to others while Fire Station is in a deplorable state having a mean rating of 1.35.Similarly, Residents are only satisfied with Schools and Road given their mean ranking of 2.68 and not satisfied with other facilities sequel to their mean ranking below 2.5.The study concluded that residents are only satisfied with Schools and Road out of other facilities/services provided in the schemes. The study recommended more provision of services/facilities in the study area and a regular maintenance of same so as to ensure residents’ satisfaction and enhanced housing delivery. Keywords: Facilities/Services, Site and Services Schemes, Residents’ satisfaction, Ibadan

Towards a Crime-Free Housing: CPTED versus CPSD

Attempts to keep a crime-free residential neighbourhood have variously necessitated the adoption of the concepts of Crime Prevention through Environmental Design (CPTED) and Crime Prevention through Social Development (CPSD). However, there had been a sharp argument between environmental design professionals and sociologists cum criminologist for and against the suitability of the concepts in crime prevention. There has been a paucity of study analysis on the veracity of these criticisms. Sequel to this, the study carefully analyses and explores the various criticisms for and against the two approaches with a view to enhancing better implementation and performance. The strengths and weaknesses of each of the concepts were drawn from an in-depth search into related literature like journals, textbooks, unpublished theses and research reports. Findings show that most of the criticisms were constructive and have resulted in theory/policy improvement. This paper recommends a synergy between the two to form Crime Prevention through Social and Environmental Development (CPSED) having certified that the two concepts are beneficial in crime prevention. Efforts towards this direction should be intensified to achieve a crime-free residential neighbourhood. Keywords: Crime, crime prevention, CPTED, CPSD, Housing security

Severity of intrauterine adhesions and pregnancy success rates after treatment: Comparison of adhesions obtained from open myomectomy versus uterine curettage

Intrauterine adhesions (IUA) are rare. A retrospective comparative study was conducted between January 1, 2015, and December 31, 2018. Group A comprised 117 women who developed IUAs after open myomectomy, while Group B comprised 113 women who developed IUAs following uterine trauma caused by uterine instrumentation after a termination of pregnancy (TOP) or spontaneous miscarriage. The IUA grade and pregnancy rates and outcomes were compared using the March classification system. All patients underwent hysteroscopic adhesiolysis. The adhesions tended to be more severe (45/117, 38.5%) in Group A than in Group B (29/113, 25.7%); however, this difference was not statistically significant (Chi-Suare 5.047; p = .080). The period of observation was 24 months from the last hysteroscopy. The pregnancy rate in Group A (26, 22.2%) was significantly lower than in Group B (46, 40.7%) (OR: 2.403, 95% CI: 1.352–4.271; p = .003). Open myomectomy was the preceding aetiological factor in a greater proportion of women with IUA in our study. In cases where pregnancy is desired after open myomectomy, especially where the endometrial cavity is breached, postoperative hysteroscopy to exclude IUAs is recommended. (Afr J Reprod Health 2022; 26[12]: 90-96). Les adhérences intra-utérines (IUA) sont rares. Une étude comparative rétrospective a été menée entre le 1er janvier 2015 et le 31 décembre 2018. Le groupe A comprenait 117 femmes ayant développé des AIU après une myomectomie ouverte, tandis que le groupe B comprenait 113 femmes ayant développé des AIU à la suite d'un traumatisme utérin causé par une instrumentation utérine après l'arrêt d'une grossesse (TOP) ou fausse couche spontanée. Le grade IUA et les taux de grossesse et les résultats ont été comparés à l'aide du système de classification de mars. Tous les patients ont eu une adhésiolyse hystéroscopique. Les adhérences avaient tendance à être plus sévères (45/117, 38,5 %) dans le groupe A que dans le groupe B (29/113, 25,7 %); cependant, cette différence n'était pas statistiquement significative (Chi-Suare 5,047 ; p = 0,080). La période d'observation était de 24 mois à partir de la dernière hystéroscopie. Le taux de grossesse dans le groupe A (26, 22,2 %) était significativement plus faible que dans le groupe B (46, 40,7 %) (OR : 2,403, IC à 95 % : 1,352–4,271 ; p = 0,003). La myomectomie ouverte était le facteur étiologique précédent chez une plus grande proportion de femmes avec IUA dans notre étude. Dans les cas où une grossesse est souhaitée après une myomectomie ouverte, en particulier lorsque la cavité endométriale est percée, une hystéroscopie postopératoire pour exclure les IUA est recommandée. (Afr J Reprod Health 2022; 26[12]: 90-96)

Prevalence of ECG abnormalities among adults with metabolic syndrome in a Nigerian Teaching Hospital

Background: Co-existence of metabolic syndrome (MetS) and electrocardiography (ECG) abnormalities heightens the risk of sudden cardiac death. However, there is a gap in evidence of how ECG changes cluster among continental Africans with or without MetS. Methods: We included 491 participants with interpretable ECG tracings who were consecutively recruited into the Cardiovascular Risk Prediction Registry (CRP). CRP is a registry of newly presenting patients into cardiology clinic of the University College Hospital, Nigeria, with a main objective of cardiovascular risk stratification to prevent cardiovascular morbidity and mortality. Using the International Diabetic Federation (IDF) criteria they were divided into those with metabolic syndrome and non-metabolic syndrome. Results: Four hundred and ninety-one participants comprising 48.3% women with mean age 53.72\ub115.2 years who met the IDF criteria with complete ECG interpretations were analyzed with 44.2% (men 38.6%; women 50.2%) of the participants having MetS while 74% had ECG abnormalities. Compared to women, men had higher mean serum total cholesterol, creatinine, smoking, and alcohol use, family history of hypertension and diabetes mellitus, QT prolongation, LVH plus or minus strain pattern, and ECG abnormalities in general. Women were heavier, had higher heart rate and proportions of MetS. ECG findings among those with or without MetS were not significantly different. In men, IDF metabolic score was associated with conduction abnormalities (p=0.039) and combined ECG abnormality (p=0.042) which became more significant with an exclusion of QT prolongation (p=0.004). Also, IDF abdominal obesity was associated with QT prolongation (p=0.017), combined ECG abnormality (p=0.034) while HDLc correlated with ECG abnormalities (0.037) in men. There was no significant associations of components of metabolic syndrome with ECG abnormalities among women. Conclusion: There was a high prevalence of MetS and abnormal ECG among the studied population. Abnormal ECG findings were more common in men with no differential association in people with or without MetS. However, a significant association existed between certain components of MetS and ECG abnormalities in men only. Male gender and HDLc were independent predictors of ECG Abnormalities

Trends in female sterilization in north central Nigeria

Background: Contraception is key to the reduction of maternal mortality. Tubal ligation is a good option for women seeking out a safe, effective, permanent and convenient form of contraceptive. However, due to variety of reasons, there is aversion to it especially in developing world. The objective of this study was to determine the trends, uptake, socio-demographic characteristics of acceptors, indications and complications of bilateral tubal ligation (BTL) in our environment.Methods: A retrospective study of BTL at UATH was conducted over a five year period, from 1 January 2015 to 31 December 2019. The records of women who had BTL were retrieved from the medical records department, family planning clinic, and the theatre. The data was analyzed using SPSS 21.Results: The mean age and parity were 36.0±4.0 and 5.0±2.0 respectively. The incidence of BTL was 1.3%. Majority of those that had BTL had at least secondary level of education 100 (83.4%) and 58 (48.3%) were grand multiparous. Majority of cases 87 (72.5%) were done during caesarean section/laparotomy. Postpartum BTL accounted for 15.0%, while interval BTL accounted for 12.5%. Completed family size was the commonest indication 48.3%. No client came back with regrets. There was one case of failed BTL.Conclusions: BTL is a safe and effective method of sterilization. There is an increasing trend in utilization of BTL however the rate is still low

Anaemia in HIV positive mothers on antiretroviral therapy for prevention of mother-to-child transmission HIV in a tertiary health institution in North Central Nigeria

Background: Anaemia in pregnancy and HIV infection are two common public health issues in sub-Saharan African with Nigeria bearing the greatest burden. The duo occurring together poses a higher risk of morbidity and mortality for both the foetus and the mother. We therefore conducted this study to determine the burden of anaemia and other haematological abnormalities among HIV positive pregnant mothers on antiretroviral therapy who attended antenatal clinical services in our health institution.Methods: A 10-year retrospective review from January 2010 to December 2019 of medical records of HIV positive mothers on highly anti-retroviral therapy in attendance for antenatal clinical services in our health institution was carried out for the above objectives. Information extracted were, age, HIV status, gestational age at delivery, type of antiretroviral drugs used, duration of use, haemoglobin level, platelet, and complete blood count at booking of the positive mothers.Results: Of a total of 330 HIV positive mothers seen during the review period, 82.7% were from rural communities, 88.8% were from middle socio-economic class, 80.0% were Christians, and 80.3% started their highly active antiretroviral therapy before their index pregnancy. Most, 51.5% and 42.7% were on zidovudine, lamivudine and nevirapine, and tenofovir with lamivudine and lopinavir boasted ritonavir combinations, while 94.2% were on 1st line antiretroviral medication. Their mean age, gestational age at delivery, and parity were 31.11±4.7 years, 38.57±3.1 weeks, and 2.0±1.6 respectively. The prevalence of anaemia, thrombocytopenia and leucopoenia were 36.1%, 4.8%, and 6.7% respectively while their mean CD4 cell count and viral loads at the point of booking were 543.63±283.7 cells/μl, and 2953.02±1619.9 copies/ml. The two maternal variables that showed significant relationship with haemoglobin concentration of <10 gm/dl was mother’s level of education x2=6.29, p=0.043, and her socio=economic class, x2=10.162, p=0.006.Conclusions: There is high burden of anaemia among HIV positive mothers on antiretroviral therapy in our environment. The prevalence of thrombocytopenia and leucopoenia was much lower. The burden of maternal anaemia was associated with maternal level of education and her socio-economic class

Preparation and characterisation of biochars from elephant grass and their utilisation for aqueous nitrate removal: Effect of pyrolysis temperature

Staff PublicationBiochar is a solid material obtainable from biomass pyrolysis and useful for pollution alleviation and soil amendment. In this study, Biochars A and B were produced from elephant grass at pyrolytic temperatures of 400 ◦C and 600 ◦C, respectively, for removal of nitrate ion from aqueous solution. The physicochemical characteristics of the biochars were evaluated. The biochars were also characterised using Fourier Transform Infrared (FTIR) spectroscopy, Scanning Electron Microscopy (SEM), Energy Dispersive X-ray (EDX), and X-ray Diffraction (XRD). Operational variables such as pH, contact time, and concentration of nitrate ion were varied and optimum variables were obtained. Kinetic and equilibrium data were subjected to kinetic (pseudo-first order, pseudosecond order, Avrami fractional order, Elovich and intraparticle diffusion) and equilibrium (Langmuir, Freundlich, Liu, and Redlich-Peterson) models, respectively, to elucidate the interaction between the nitrate ion and biochars. The yields of Biochars A and B were 41.40 % and 32.25 %, respectively. The two biochars possessed good cation exchange capacity, water-holding capacity, carbon stability, and porosity. Avrami fractional kinetic order was the best model that explained the kinetic data. Maximum adsorption capacities obtained from Liu model (the best equilibrium model) are 140.7 and 237.5 mg g− 1 for Biochars A and B, respectively. Adsorption process was spontaneous and exothermic. There was a decrease in the disorderliness in the nitratebiochar system. Biochar B performed better than Biochar A for removal of nitrate ion from water. In summary, the biochars produced from elephant grass excellently removed nitrate ion from solution and could be utilised for water decontamination

Primary umbilical endometriosis: Radical excision (omphalectomy) and laparoscopic management of associated pelvic endometriosis in a low resource tertiary hospital

Primary umbilical endometriosis (PUE) is a rare condition affecting 0.5 – 1% of all extragenital endometriosis cases. We reviewed the data of five women with umbilical endometriosis retrospectively. The age range was 29 – 46 years, and they were all nulligravid at presentation. Common clinical presentation was umbilical pain and masses, dysmenorrhea, and primary infertility. Radical umbilical excision was performed to remove the nodule as a definitive treatment. Diagnostic laparoscopy was performed, followed by varying degrees of operative laparoscopic procedures. They all had endometriosis in the pelvis. Three out of five women operated became pregnant and had live births. Complete resolution of clinical symptoms with a reduction in umbilical and menstrual pain scores occurred. In resource-constrained settings, diagnosis, and treatment of PUE may be challenging. Clinical suspicion and appropriate case management are critical for good reproductive outcomes and quality of life. &nbsp; L'endométriose ombilicale primaire (PUE) est une maladie rare affectant 0,5 à 1 % de tous les cas d'endométriose extragénitale. Nous avons examiné les données de cinq femmes atteintes d'endométriose ombilicale rétrospectivement. La tranche d'âge était de 29 à 46 ans, et ils étaient tous nulligravides à la présentation. Le tableau clinique commun était la douleur et les masses ombilicales, la dysménorrhée et l'infertilité primaire. Une excision ombilicale radicale a été réalisée pour retirer le nodule comme traitement définitif. La laparoscopie diagnostique a été réalisée, suivie de divers degrés de procédures laparoscopiques opératoires. Ils avaient tous une endométriose du bassin. Trois femmes opérées sur cinq sont tombées enceintes et ont eu des naissances vivantes. Une résolution complète des symptômes cliniques avec une réduction des scores de douleur ombilicale et menstruelle s'est produite. Dans les milieux à ressources limitées, le diagnostic et le traitement du PUE peuvent être difficiles. La suspicion clinique et une prise en charge appropriée des cas sont essentielles pour de bons résultats en matière de reproduction et une bonne qualité de vie

Blood pressure control and left ventricular hypertrophy in hypertensive Nigerians

Background : Hypertension is a disease characterized by end-organ complications, leading to high morbidity and mortality in many cases. People with untreated or uncontrolled hypertension often run the risk of developing complications directly associated with the disease. Left ventricular hypertrophy (LVH) has been shown to be a significant risk factor for adverse outcomes both in patients with hypertension and in the general population. We investigated the prevalence and pattern of LVH in a treated hypertensive population at the University College Hospital, Ibadan, Nigeria, using non-hypertensive subjects as control. Design and Setting : A prospective observational study performed at the University College Hospital, Ibadan, Nigeria. Methods : Patients had 6 visits, when at least one blood pressure measurement was recorded for each hypertensive subject and average calculated for systolic blood pressure (SBP) and diastolic blood pressure (DBP) separately. The values obtained were used for stratification of the subjects into controlled and uncontrolled hypertension. Subjects also had echocardiograms to determine their left ventricular mass. Results : LVH was found in 14 (18.2%) of the normotensive group, 40 (20.8%) of the uncontrolled hypertensive group and 14 (24.1%) of the controlled hypertensive group when left ventricular mass (LVM) was indexed to body surface area (BSA). When LVM was indexed to height, left ventricular hypertrophy was found in none of the subjects of the normotensive group, while it was found present in 43 (22.4%) and 14 (24.1%) subjects of the uncontrolled and controlled hypertensive groups, respectively. Significant difference in the prevalence of LVH was detected only when LVM was indexed to height alone. Conclusion : Clinic blood pressure is an ineffective way of assessing BP control. Thus in apparently controlled hypertensive subjects, based on office blood pressure, cardiac structural changes do remain despite antihypertensive therapy. This population is still at risk of cardiovascular events.arri\ue8re-plan: l\u2019hypertension est une maladie caract\ue9ris\ue9e par l\u2019orgue de fi n complications menant \ue0 \ue9lev\ue9 de morbidit\ue9 et mortalit\ue9 dans de nombreux cas. Personnes avec l\u2019hypertension non trait\ue9e ou non contr\uf4l\ue9e souvent risquent de d\ue9velopper complications directement associ\ue9es \ue0 la maladie. Laiss\ue9 ventriculaire hypertrophie (LVH) a \ue9t\ue9 d\ue9montr\ue9 un facteur de risque signifi catif pour les effets n\ue9gatifs r\ue9sultats tant chez les patients atteints de l\u2019hypertension et de la population g\ue9n\ue9rale. Nous avons a enqu\ueat\ue9 sur la pr\ue9valence et le mod\ue8le de LVH dans un trait\ue9 hypertendues population au University College Hospital, \ue0 l\u2019aide Ibadan, Nigeria non-hypertendues des sujets comme contr\uf4le. conception et la confi guration: A \ue9ventuel \ue9tude d\u2019observation effectu\ue9e \ue0 la University College Hospital, Ibadan, Nigeria. m\ue9thodes: Patients avaient six visites o\uf9 au moins un sang mesure de pression a \ue9t\ue9 enregistr\ue9e pour chaque sujet hypertendues et moyenne calcul\ue9s s\ue9par\ue9ment pour SBP et DBP. Les valeurs obtenues ont \ue9t\ue9 utilis\ue9es pour stratifi cation des sujets dans l\u2019hypertension contr\uf4l\ue9e et incontr\uf4l\ue9e. Sujets ont \ue9galement echocardiograms pour d\ue9terminer leur masse ventriculaire gauche. r\ue9sultats: LVH a \ue9t\ue9 trouv\ue9 en 14(18.2%) de la groupe normotensive, 40(20.8%) de groupe de hypertendues non contr\uf4l\ue9es et 14(24.1%) de hypertendues contr\uf4l\ue9e groupe lorsque quitt\ue9 masse ventriculaire (LVM) a \ue9t\ue9 index\ue9e \ue0 corps surface (BSA). Lorsque LVM a \ue9t\ue9 index\ue9 \ue0 hauteur, laiss\ue9 ventriculaire hypertrophie a \ue9t\ue9 trouv\ue9 dans aucun du groupe normotensive, bien qu\u2019il a \ue9t\ue9 constat\ue9 pr\ue9sents dans les 43(22.4%) et 14(24.1%) de hypertendues non ma\ueetris\ue9e et contr\uf4l\ue9e groupes respectivement. \uc9tait de diff\ue9rence signifi cative dans la pr\ue9valence de la LVH d\ue9tect\ue9s uniquement lorsque LVM a \ue9t\ue9 index\ue9 \ue0 hauteur alone. conclusion: clinique art\ue9rielle est un moyen ineffi cace de mesurer le contr\uf4le de BP. Ainsi en sujet hypertendues apparemment contr\uf4l\ue9e bas\ue9e sur la pression art\ue9rielle de bureau, des changements structurels cardiaques restent malgr\ue9 th\ue9rapie antihypertensive. Cette population est toujours \ue0 risque de maladies cardiovasculaires \ue9v\ue9nements