Prevalence and Causes of Neonatal Mortality at Chu-Mel, Cotonou in 2023

Introduction: Neonatal mortality represents a global health problem that has been at the core of programs developed by the World Health Organization (WHO) for more than 30 years. In our country, it represents a real scourge and remains high despite the efforts made by the Ministry of Health. The goal of this study was to investigate the prevalence and causes of neonatal mortality at CHU-MEL of Cotonou in 2023. Material and Methods: This was a cross-sectional and descriptive study with retrospective data collection, carried out in the neonatology unit of the Mother and Child Teaching Hospital of Lagune (CHU-MEL) in Cotonou over a period of six months from January 1, 2023 to June 30, 2023. All neonates, premature or full-term, born alive and who died during hospitalization in the unit were included. Results: 211 cases of neonatal deaths were recorded among the 2884 neonates hospitalized in the unit during the study period, representing a hospital prevalence of 7.31%. Early neonatal mortality represented 81.5% of cases. The average age at admission was 4.6 days ± 5.3. The average weight of deceased neonates was 1609.08 ± 798.35 g. The most frequent reasons for hospitalization were represented by prematurity (60.66%) and respiratory distress (23.22%), respectively. Prematurity was the leading cause of neonatal mortality (41.7%), followed by neonatal infections (29.4%) and perinatal asphyxia (10.9%). Conclusion: The prevalence of neonatal mortality in the neonatology unit of CHU-MEL is high. Efforts to improve the quality of perinatal care departments must be intensified to reduce this prevalence.

Statistical and causes analysis of storm surges along Tianjin coast during the past 20 years

Based on tidal data statistical analysis for 20 years of Tanggu Marine Environmental Monitoring Station from 1991 to 2010, we concluded that an average of nearly 10 days of 100 cm above water increase took place at Tianjin coast every year. The maximum high tide and average tide of Tianjin coast occurred in summer and autumn, and the maximum water increase also occurred in summer and autumn. Days with water increase more than 100 cm mostly occurred in spring, autumn and winter. Then we summarized the causes of coastal storm surge disaster in Tianjin based on astronomical tide factors, meteorological factors, sea level rise, land subsidence, and geographic factors, et al. Finally, we proposed storm surge disaster prevention measures.

Slightly Analyze the Historical Causes of Walt. Whitman's Democratic Poems

Walt·Whitman was one of the famous poets in American literary field. He is remembered by his masterpiece-Leaves of Grass, which composes a lot of his democratic ideas. His democratic poems and his writing styles have their historical background which helped form his democratic ideas.

Genetic causes of spermatogenic failure

Approximately 10%-15% of couples are infertile, and a male factor is involved in almost half of these cases. This observation is due in part to defects in spermatogenesis, and the underlying causes, including genetic abnormalities, remain largely unknown. Until recently, the only genetic tests used in the diagnosis of male infertility were aimed at detecting the presence of microdeletions of the long arm of the Y chromosome and/or chromosomal abnormalities. Various other single-gene or polygenic defects have been proposed to be involved in male fertility. However, their causative effects often remain unproven. The recent evolution in the development of whole-genome-based techniques and the large-scale analysis of mouse models might help in this process. Through knockout mouse models, at least 388 genes have been shown to be associated with spermatogenesis in mice. However, problems often arise when translating this information from mice to humans.

Micro-geological causes and macro-geological controlling factors of low-resistivity oil layers in the Puao Oilfield

Low-resistivity oil layers are often missed in logging interpretation because of their resistivity close to or below the resistivity of nearby water layers. Typical low-resistivity oil layers have been found in the past few years in the Putaohua reservoir of the Puao Oilfield in the south of the Daqing placanticline by detailed exploration. Based on a study of micro-geological causes of low-resistivity oil layers, the macro-geological controlling factors were analyzed through comprehensive research of regional depositional background, geological structure, and oil-water relations combined with core, water testing, well logging, and scanning electron microscopy data. The results showed that the formation and distribution of Putaohua low-resistivity oil layers in the Puao Oilfield were controlled by depositional environment, sedimentary facies, diagenesis, motive power of hydrocarbon accumulation, and acidity and alkalinity of reservoir liquid. The low-resistivity oil layers caused by high bound-water saturation were controlled by deposition and diagenesis, those caused by high free-water saturation were controlled by structural amplitude and motive power of hydrocarbon accumulation. Those caused by formation water with high salinity were controlled by the ancient saline water depositional environment and faulted structure and those caused by additional conductivity of shale were controlled by paleoclimate and acidity and alkalinity of reservoir liquid. Consideration of both micro-geological causes and macro-geological controlling factors is important in identifying low-resistivity oil layers.

Historical review of the causes of cancer

In the early 1900 s, numerous seminal publications reported that high rates of cancer occurred in certain occupations. During this period, work with infectious agents produced only meager results which seemed irrelevant to humans. Then in the 1980 s ground breaking evidence began to emerge that a variety of viruses also cause cancer in humans. There is now sufficient evidence of carcinogenicity in humans for human T-cell lymphotrophic virus, human immunodeficiency virus, hepatitis B virus, hepatitis C virus, human papillomavirus, Epstein-Barr virus, and human herpes virus 8 according to the International Agency for Research on Cancer(IARC). Many other causes of cancer have also been identified by the IARC, which include: Sunlight, tobacco, pharmaceuticals, hormones, alcohol, parasites, fungi, bacteria, salted fish, wood dust, and herbs. The World Cancer Research Fund and the American Institute for Cancer Research have determined additional causes of cancer, which include beta carotene, red meat, processed meats, low fibre diets, not breast feeding, obesity, increased adult height and sedentary lifestyles. In brief, a historical review of the discoveries of the causes of human cancer is presented with extended discussions of the difficulties encountered in identifying viral causes of cancer.

Investigation of Direct Causes of Drug Relapse and Abstainers’ Demands in a Compulsive Detoxification Center in Wuhan City of China

Objective To identify the direct causes of drug relapse and abstainers’ demand, and to develop programs for the prevention of drug relapse. Methods Abstainers in a Compulsive Detoxification Center in Wuhan City, capital of Hubei Province were randomly selected. An investigation on the direct causes of drug relapse and abstainers’ demands was conducted with multiple-choice questionnaires and face to face interviews. Data were analyzed with SPSS 12.0. Results The direct causes leading to drug relapse included： temptation to use drug again by themselves or by their drug mates, seeking pleasure and ecstasy from drug use, relatively well off living, mental stress, irritation, demoralization, family conflicts, unemployment, feeling distrusted by the family, lack of care and love from the family, and discrimination by others. abstainers’ demands after detoxification and returning to the society included： care and support from the family, employment assistance, changing living environment, understanding by others, support from the society, and keeping far away from drugs. Conclusions Environmental factors are the direct causes of drug relapse, and negative irritation is its predisposing causes. Leaving former residence, more care and help given by both the family and the society and raising their overall quality of life are the demands of abstainers.

Causes of Peripheral Blood Cytopenias in Patients with Liver Cirrhosis Portal Hypertension and Clinical Significances

Liver cirrhosis portal hypertension patients to reduce the number of blood cells are common in clinical, and often affect the prognosis. This paper discusses cirrhotic portal hypertension patients complicated by the reason of the decrease in the number of peripheral blood cells and what is the clinical significance of these reasons so as to provide theoretical support for the choice of treatment. Splenomegaly and hypersplenism caused should be the main reason for reducing the number of blood cells, but not all, other reasons are alcohol and virus inhibition of bone marrow, liver function impairment, autoimmune damage and loss of blood, etc. If it is a function of the spleen hyperfunction caused by blood cells decreases, blood should rise to normal after splenectomy, or consider other reason or there are other reasons at the same time.

Study of Mortality and Causes of Death in the Service of Stomatology, Maxillofacial and Plastic Surgery of the Face at Cocody Teaching Hospital (RCI)

Introduction: The study of mortality is an indicator that allows a control and a review of the therapeutic measures in the hospital environment. The purpose of this work was to determine the epidemiological profile of the patients who died and analyse the circumstances of the death in a hospital service. Material and Methods: It is a retrospective descriptive study conducted in the service of Stomatology, maxillofacial and plastic surgery of the face over a period of 10 years (from January 1999 to December 2008). Seventy-two cases have been taken into account. Results: The crude death rate was 4.29%. Higher level of male has been noted with a sex ratio of 1.77. The most affected age groups were the 3rd and 2nd decades, respectively with 20.8% and 19.4% with an average age of 39 years. Cellulitis of the face and their complications were responsible for deaths in 58.33% of cases. The majority of deaths occurred between 6 p.m. and 6 a.m. (65.28%). These deaths were preventable in 5.6% of cases. Conclusion: Facing the lack of description of the ultimate circumstances of death in the medical records, the conclusion of this study has been the establishment of a regular medical audit in the service, which would track mortality in order to reduce its rate.

Study on Characteristics and Climatic Causes of Guangxi Conductor Icing

The icing disaster data and field investigation data of conductor icing were analyzed,the results indicated that conductor icing is mostly mixed freezing of glaze and rime in Guangxi,it becomes more severe with the higher of latitude and the increasing of altitude;the thickness of windward side is larger than leeward side in the same elevation.The closer to reservoir and rivers,the more serious the icing degree is.When cold wave broke,southwest warm-moist airflow was transported like an endless stream to the upper air of South China and surface stationary front sustained in South China coast.The main reasons of coming into being conductor icing were a stable strong frontal zone sustained in the upper air in Guangxi and there was strong inversion layer in the middle and lower troposphere,at that time,it was easy to generate conductor icing.The terrain generated an important effect on conductor icing.

A Review of Causes,Influencing Factors and Countermeasures of Haze Pollution in China

Haze pollution is a hot research topic at present,and it is of great significance to prevent and control haze pollution.In this paper,specific causes of haze pollution in China are analyzed by literature research and summary,and impacts of economic structure,energy structure and compound factors on haze pollution are explored.Finally,the prevention and control measures of haze pollution are summarized.

Pore structure differences of the extra-low permeability sandstone reservoirs and the causes of low resistivity oil layers: A case study of Block Yanwumao in the middle of Ordos Basin, NW China

The influence of pore structure difference on rock electrical characteristics of reservoir and oil reservoir was analyzed taking Triassic Chang 6 reservoir in Block Yanwumao in the middle of Ordos Basin as an example. The relationship between the pore structure difference and the low resistivity oil layer was revealed and demonstrated through core observation, lab experiments, geological research, well log interpretation and trial production etc. The results show that there were two kinds of oil layers in Chang 6 oil layer set, normal oil layer and low resistivity oil layer in the region, corresponding to two types of pore structures, pore type mono-medium and micro-fracture-pore type double-medium; the development of micro-fracture changed greatly the micro-pore structure of the reservoir, and the pore structure difference had an important influence on the rock electrical characteristics of the extra-low permeability sandstone reservoir and oil reservoir; the normal oil layers had obvious characteristics of pore-type mono-medium, and were concentrated in Chang 61, Chang 6232 and Chang 62; the low resistivity oil layers had obvious characteristics of micro-fracture-pore type double-medium, which were mainly distributed in Chang 612 and Chang 63. The mud filtrate penetrated deep into the oil layers along the micro-cracks, leading to sharp reduction of resistivity, and thus low resistivity of the oil layer; the low resistivity oil layers had better storage capacity and higher productivity than the normal oil layers.

Primary Post-Partum Haemorrhage Following Vaginal Deliveries at the Douala General Hospital: Prevalence, Causes and Risk Factors

Background: Postpartum haemorrhage is one of the leading causes of maternal morbidity and mortality worldwide. It occurs predominantly in developing countries due to poorly developed infrastructures and lack of skilled birth attendants. Objective: To identify the prevalence, causes and risk factors of primary postpartum haemorrhage following vaginal deliveries in a referral hospital (Douala General Hospital-Cameroon). Methods: This was a descriptive and analytical study carried in the Douala General Hospital (DGH) for which socio-demographic, clinical, obstetric and post-partum data were collected using a pre-tested questionnaire. Descriptive statistics, multivariate analysis and logistic regression allowed us to present and discuss our results, with a 95% confidence interval (CI) and p value < 0.05. Results: The prevalence of Primary Postpartum Haemorrhage was 1.33%. Quantification of bleeding was reported in only 13.15% of cases. The main causes were: uterine atony (36.18%), placental retention (25.65%), cervical tears (12.50%), perineal tears (10.52%) and cervico-vaginal tears (08.52%). The risk factors were: age between 19 - 35 years aOR = 4.52;95% CI = 2.65 - 7.98;p = 0.021);unemployment (aOR = 4.74;95% CI = 2.91 - 6.02;p = 0.001);being multigravida (aOR = 9.21;95% CI = 6.43 - 12.48;p = 0.035);history of abortion (aOR = 5.11;95% CI = 2.05 - 7.29;p = 0.004);preterm delivery (aOR = 6.88;95% CI = 2.72 - 9.06;p = 0.002);duration of labour > 12 hours (aOR = 4.05;95% CI = 2.46 - 7.98;p = 0.003) and macrosomia (aOR = 3.27;95% CI = 1.03 - 5.68;p = 0.041). Conclusion: Primary postpartum haemorrhage remains a poorly assessed obstetric complication in the maternity ward of the Douala General Hospital (DGH);Training staff on quantifying postpartum blood loss and monitoring the second and third stages of labour can help to better manage and reduce its occurrence.

Causes and Countermeasures of Helping Poor Students to Learn English

In English teaching, there is a common phenomenon: at the beginning of English learning, students are enthusiastic and full of interest; then polarization appears after a period of study. Some of the students become discouraged and lose confidence in learning English, and gradually become the so-called poor learners. Therefore, teachers should make careful analysis, find out the causes and regulate countermeasures to improve teaching methods, so that every student can get a comprehensive and healthy development.

Analysis of the causes of primary revision after unicompartmental knee arthroplasty: A case series

BACKGROUND Unicompartmental knee arthroplasty(UKA)has great advantages in the treatment of unicompartmental knee osteoarthritis,but its revision rate is higher than that of total knee arthroplasty.AIM To summarize and analyse the causes of revision after UKA.METHODS This is a retrospective case series study in which the reasons for the first revision after UKA are summarized.We analysed the clinical symptoms,medical histories,laboratory test results,imaging examination results and treatment processes of the patients who underwent revision and summarized the reasons for primary revision after UKA.RESULTS A total of 13 patients,including 3 males and 10 females,underwent revision surgery after UKA.The average age of the included patients was 67.62 years.The prosthesis was used for 3 d to 72 months.The main reasons for revision after UKA were improper suturing of the surgical opening(1 patient),osteophytes(2 patients),intra-articular loose bodies(2 patients),tibial prosthesis loosening(2 patients),rheumatoid arthritis(1 patient),gasket dislocation(3 patients),anterior cruciate ligament injury(1 patient),and medial collateral ligament injury with residual bone cement(1 patient).CONCLUSION The causes of primary revision after UKA were gasket dislocation,osteophytes,intra-articular loose bodies and tibial prosthesis loosening.Avoidance of these factors may greatly reduce the rate of revision after UKA,improve patient satisfaction and reduce medical burden.

Acute acalculous cholecystitis due to infectious causes

Acute acalculous cholecystitis(AAC)is an inflammation of the gallbladder not associated with the presence of gallstones.It usually occurs in critically ill patients but it has also been implicated as a cause of cholecystitis in previously healthy individuals.In this subgroup of patients,infectious causes comprise the primary etiology.We,herein,discuss the pathophysiological mechanisms involved in AAC,focusing on the infectious causes.AAC associated with critical medical conditions is caused by bile stasis and gallbladder ischemia.Several mechanisms are reported to be involved in AAC in patients without underlying critical illness including direct invasion of the gallbladder epithelial cells,gallbladder vasculitis,obstruction of the biliary tree,and sequestration.We emphasize that multiple pathogenic mechanisms may concurrently contribute to the development of AAC in varying degrees.Awareness of the implicated pathogens is essential since it will allow a more focused examination of the histopathological specimens.In conclusion,additional research and a high degree of clinical suspicion are needed to clarify the complex spectrum of mechanisms that are involved in the pathogenesis of AAC.

Analysis on the Causes for Refractory GERD

To analyze the causes of failure in conventional treatment to refractory gastroesophageal reflux diseases (GERD) patients, 16 refractory GERD patients (group R) and 16 cases of GERD primarily diagnosed (group P) were studied. Endoscopy, pathologic examination and 14 C urea breath test were conducted in every patient. 24 h ambulatory pH and bilirubin monitoring were performed with Digitrapper MK Ⅲ and Synetics Bilitec 2000. It was found that esophagitis in group R was more severe than in group P. The rate of Helicobacter pylori infection in group R was significantly lower than in group P. Fraction time pH below 4.00 was not longer while the bile reflux represented by fraction time abs above 0.14 was greater for patients in the group R as compared with those in the group P. The mixed refluxes and pure bile refluxes between the two groups had significant difference. The reflux episodes in the group R mainly occurred during nights. These results indicated that severe esophagitis, especially Barrett's esophagus with complications makes it difficult to control GERD. Severe duodenogastroesophageal refluxes (DGER) are often accompanied by refractory GERD. Mixed refluxes aggravate the esophageal injuries. Pure bile refluxes and nocturnal refluxes may cause failure of administration of proton pump inhibitors (PPI) in the morning. Helicobacter pylori infection and acid refluxes may not be the direct cause of refractoriness. Individual refractory GERD patient without abnormal results on pH or bile reflux recently should be diagnosed again.

Study on the Causes of Abnormal Weather in Winter in Jinzhou from 2009 to 2010

[Objective] The aim was to study the causes of abnormal weather in winter in 2009 and 2010 in Jinzhou. [Method] By dint of regular meteorological data and weather theory, the abnormal weather in winter from 2009 to 2010 in Jinzhou was expounded so as to find the reasons for abnormal climate in winter in the region. [Result] The main reason for the consecutive low temperature in winter in Jinzhou from 2009 to 2010 was the abnormal development of the Ural Mountains high-pressure ridge and strong horizontal circulation. The frequent cold air activity was the leading reason for the increase of precipitation in Jinzhou in winter; the high trough and low air torrent were the main weather system for precipitation. Convergence in the low layer was the dynamic condition for the generation of precipitation. [Conclusion] The study provided theoretical basis for the disaster prevention and mitigation work in winter.

Causes of Restocking Delays in Absence of Real Time Inventory Tracking of Airtel Airtime

The purpose of this research was to ascertain causes of Restocking Delays in a Distributor Company of Airtel Airtime (AA) that give justification for benefits of using Real Time Inventory Tracking (R.T.I.T) in an attempt to mitigate Restocking Delays. From a study out at the Private Marketing and Trading Services (PMTS) an Authorized Distributor of Airtel Products undertaken in 2017 evidenced by Airtime scratch card and Electronic, E-Recharge Airtime among other forms to encourage R.T.I.T among other products in Telecom Companies and other Business Enterprises. The research comprises of the following areas among which included a detailed focus on a Qualitative and Quantitative approach in obtaining different categories of Restocking Delays in form of Themes and Sub Themes encountered in the Distribution Supply Chain (SC) of AA that is contained in this paper. This research continues to capture an in-depth explanation of the Managerial and Operational causes of restocking delays in respect to AA. Similarly, fast consumer products and services other than AA require a solution to Restocking Delays through implementation of Real Time Inventory Tracking Model (R.T.I.T.M) of AA among Distributor Companies (DCs). This paper also elaborated on Literature, Methodology and Findings obtained from the study. The results were obtained from regression analysis by using the Statistical Package for Social Sciences (SPSS) that showed a higher significance of Stock Turnover Period and Airtime Denomination as a contributor to Restocking Delays whereas Messages from Airtel Head office to the Distributor had a non-significant contribution to restocking Delays as in Figure 9. The research recommends a Model for R.T.I.T in Telecom Distribution SC of AA and Omnichannel Inventory Management (OIM) as a significant contributor to timely reliable inventory restocking and promotes higher sales among DCs and retailers through minimized Restocking Delays. It shows that the forces of Demand and Supply change over time with different tastes and preferences of customers. The imbalance in AA stock levels changes at given times due to unforeseen forces of consumer demand experienced by DCs, explained by the “Bullwhip Effect” due to information distortion in the Supply Chain (SC).

Causes of Maternal Mortality According to Reports of Maternal Death Audits in the University Teaching Hospital Bogodogo (UTH-B) from January to December 2017

Objective: To study causes of maternal mortality according to reports of maternal death audits in the University Teaching Hospital Bogodogo (UTH-B) of Ouagadougou, Burkina Faso. Materials and Method: This was a prospective study that took place over a year from 1 January to 31 December 2017.? It concerned maternal deaths that occurred during this period in the obstetrics and gynecology department of the University Teaching Hospital Bogodogo (UTH-B). All maternal deaths were systematically audited by the audit committee;interviews with providers and families were sometimes conducted. The record books of all patients were analyzed by the audit committee;if necessary, interviews were conducted with care providers and families. The main information collected were recorded on individual files, entered and analyzed using the software Epi-info 7. Result: During the study period, we recorded 32 maternal deaths i.e., 587 per 100,000 live births. Deceased women under age 20 were the most numerous, followed by women aged 20 to 24. The death occurred in most cases in the puerperium in 69.80% of cases. Complications of pregnancy were the most incriminated causes in maternal deaths. Bleeding was the leading cause, accounting for 34.3%. They are followed by hypertensive disorders of pregnancy (21.8%) and infections (18.8%). In the contributing factors, resource factors were incriminated in 56.2% of cases, social factors in 43.7% of cases and medical factors in 25.4% of cases. Death was non-preventable in 76.2% of cases compared to 23.8% of preventable deaths. Conclusion: Maternal mortality is a major public health problem at the maternity hospital of the university hospital Yalgado Ouedraogo. Hemorrhage is the first cause of death. Hypertensive diseases are more and more worrying. Solutions must be found to improve the practice of audits in the obstetrics and gynecology department of UTH-B.