Finite Element Modeling of Magnitude and Location of Brain Micromotion Induced Strain for Intracortical Implants.

Micromotion-induced stress remains one of the main determinants of life of intracortical implants. This is due to high stress leading to tissue injury, which in turn leads to an immune response coupled with a significant reduction in the nearby neural population and subsequent isolation of the implant. In this work, we develop a finite element model of the intracortical probe-tissue interface to study the effect of implant micromotion, implant thickness, and material properties on the strain levels induced in brain tissue. Our results showed that for stiff implants, the strain magnitude is dependent on the magnitude of the motion, where a micromotion increase from 1 to 10 µm induced an increase in the strain by an order of magnitude. For higher displacement over 10 µm, the change in the strain was relatively smaller. We also showed that displacement magnitude has no impact on the location of maximum strain and addressed the conflicting results in the literature. Further, we explored the effect of different probe materials [i.e., silicon, polyimide (PI), and polyvinyl acetate nanocomposite (PVAc-NC)] on the magnitude, location, and distribution of strain. Finally, we showed that strain distribution across cortical implants was in line with published results on the size of the typical glial response to the neural probe, further reaffirming that strain can be a precursor to the glial response.

Type 2 Diabetes Mellitus Prediction In Malaysia Using Modified Diabetes Risk Assessment Tool

@#Type 2 diabetes mellitus (DM) is becoming major health threat worldwide and it is extremely common in clinical setting. Malaysia is one of the highest diabetic populations among Asian countries and the new cases are increasing day to day. Early detection of people with high risk of Type 2 DM by using simple, easy and cost-effective assessment tool is the better way to identify and prevent the community from this non-communicable disease. The objectives of the study were to identify those are high risk to become type 2DM among Malaysians by using risk scoring form and to educate them how to prevent it. Total 591 subjects were recruited from the health screening programs carried out by the collaboration of Petaling Jaya Development Council (MBPJ) and Lincoln University College, Malaysia. Modified form of Finnish Type 2 Diabetes Risk Assessment Tool was used to identify people at risk of becoming type 2 DM. Descriptive analysis was performed for all included variables in this study by using SPSS version 21. The study found out that almost half of the participants were found to have family history of DM, 60% of them were overweight and obese and 47% were having above normal waist circumference. We observed that nearly 60 % of participants in the study were having moderate to high risk of becoming type 2 DM in next 10 years. To conclude, the result of our study would be helpful in implementation of cost-effective, convenient Type 2 DM risk assessment tool which has yet to be implemented in Malaysia.

Posture Related Musculoskeletal Disorders (MSDs) among Computer Users in Higher Education Sectors of Malaysia

@#Introduction: Computer usage has become an indispensable tool in the official set up of all the workplaces in the current era. Predominance of musculoskeletal disorders (MSDs) in relation to habitual posture during work is the utmost problem of modern society. Teaching staff stand out amongst a group of workers exposed to occupational MSDs. The objective of this study was to identify the prevalence and risk factors of musculoskeletal disorders in relation to posture and computer ergonomics at workplace among the college and university staff in Petaling Jaya, Malaysia. Methods: This cross-sectional quantitative study was conducted from August 2019-October 2019, among 419 volunteers by using a self-administered survey questionnaire. Descriptive and bivariate statistics were used for the analyses of multiple variables. The association between demographic characteristics, computer ergonomics and prevalence of musculoskeletal pains were analyzed through Chi-square test. Results: 55.8 % respondents (n=234) reported neck pain (NP), (n=196) 46.8% shoulder pain (SP) and (n=308) 73.5% low back pain (LBP) respectively. A significant relationship between desktop computer usage and musculoskeletal pains in LBP (P=0.036) and SP (P=0.023) was observed. Significant association of head posture was found with NP (P=0.002), SP (P=0.042) and LBP (P=0.001), correspondingly. Discussion: Habitual postures were significantly associated with musculoskeletal pains while using computer. Conclusion: This study proved with precession that higher prevalence rate of musculoskeletal disorders was undoubtedly influenced by prolonged sitting, awkward postures at workstation, and repetitive movements of shoulders and hands. Further synchronous studies are vital to limit the modern era of musculoskeletal disorders

Knowledge And Perception Towards Supplementary Immunization Activities (Sia) Among Mothers In Cheras, Kuala Lumpur

@#Among the main reasons for re-emergence of vaccine preventable diseases were missed or incomplete immunization schedule. The supplementary immunization activity (SIA) is an important intervention done to provide complete immunization coverage among those children. Better outcome came along with good knowledge and perception on the program. Thus, this study aims to assess the level of knowledge and perception of the mothers towards SIA program. A cross-sectional study was conducted among mothers with children ≤ 15 years old in Cheras, Kuala Lumpur. Data was collected by interview using the guided questionnaire consists of four sections to assess the socio demographic, socio economic, knowledge and perception regarding SIA. The questionnaire was validated for internal consistency with Cronbach’s alpha 0.461 for knowledge and 0.729 for perception. A total of 105 respondents with the median age of 33 years (IQR: 28-38) with majority of them are Malays (82.9%), Muslim (83.8%), married (97.1%) and (57.1%) with 1- 2 child in the family. Half of them were from low income family (46.7%) and had secondary education level (54.3%) and were housewives (47.6%). One third of the respondents (33%) never heard about SIA before. Overall had poor knowledge (82.9%) and perception (95.2%) towards SIA. There is a significant association between the level of knowledge on SIA with household income (χ

Prevalence Of Stress And Its Associated Factors Among Medical Students In Sabah, Malaysia Borneo

@#Stress is accepted as the accumulation of unpleasant state of physical, mental and emotion on a person. Medical education has been known as one of the most stressful academic curriculum. Hence, medical students may subjected to multiple psychological changes and challenges throughout the years of medical education. The aim of this study was to determine the prevalence of stress and its associated factors among medical students. This cross sectional study was conducted from April to May 2018 in medical school in Sabah. It involved 396 medical students through universal sampling. Self-administered questionnaires were used as an instrument for data collection. The questionnaires included were Sociodemographic Questionnaire, Depression, Anxiety and Stress Scales 21 (DASS-21) and Medical Student Stressors Questionnaire (MSSQ). Bivariate analysis (Chi Square test, Fisher’s Exact Test, Independent T test and Man-Whitney U test) were used to analyse the association. The response rate was 90.2%. The prevalence of stress among medical students were 33.3%. Significant associated factors include financial support inadequacy (p=0.010) and all categories of medical student stressors. The mean score of the academic related stressors was found to be at 2.117 (±0.758) which was the highest mean score among medical student stressors assessed by MSSQ. The result of this study can be used as a basis for implementation of preventive measures such as provision of comprehensive, integrated and responsive mental health care services in university-based settings.@*@#

Prevalence Of Obesity And Its Associated Risk Factors Among Post- Basic Renal Care Nursing Students

@#Obesity is one of the most common, yet among the most neglected, public health problems around the world and it is strongly associated with various non-communicable diseases such as hypertension, diabetes mellitus and coronary artery diseases. Health care personal especially nurses play an important role in educating public to have healthy lifestyle. However, there is an alarming rate of increase in number of obesity among nursing students as well as staff nurses. Therefore, the aim of this study was to determine the anthropometric measurements and its associated risks among post-basic renal care nursing students. Total of 142 post-basic renal care nursing students of five intakes were included in this cross-sectional study. The result of the study showed that 52% of participants were either overweight or obese although most of them were below 40 years of age. Majority of overweight or obese students were Malays and 78% of them being female. We also observed an association of systolic blood pressure (SBP), diastolic blood pressure (DBP) and waist circumference (WC)with increasing body mass index (BMI) (P= 0.001, P= 0.001 and P<0.001) which were statistically significant. Wald criterion estimated that WC and DBP were the most important predictors of BMI in present study. Our study concluded that obesity is prevalent among post-basic renal care nursing students. Urgent and appropriate action should be taken to deter the growing problem of obesity among nursing students and to avoid its subsequent complications in Malaysia.

A Cross Sectional Study On Factors Associated With Job Performance Among Nurses In A Tertiary Hospital

@#Nurses’ job performance is defined as the effectiveness of a person in carrying out his or her duties related to patient care. Aim of this study is to measure job performance among nurses in a tertiary hospital and its associated factors. A cross-sectional study was conducted among nurses selected from four departments, which were Obstetrics & Gynecology (O&G), medical, surgical and Cardiac Care Unit (CCU)/High Dependency Unit (HDU). A Malay validated Six-Dimension Scale of Nursing Performance (6-DSNP) questionnaire was used to measure job performance. Nurses who have one child more compared to other nurses had significantly lower total mean score of job performance by -0.06 (95% CI 0.11, 0.01). Nurses working in medical department [adj.β=0.16 (95% CI 0.01, 0.30)] and CCU/HDU [adj.β= 0.33(95% CI: 0.17, 0.50)] had significantly higher total mean scores of jobs performance compared to O&G department. Effective strategies and re-examining work conditions are imperative for better job performance.

Knowledge And Beliefs On Female Breast Cancer Among Male Students In A Private University, Malaysia

The purpose of the study was to determine the level of knowledge and beliefs about female breast cancer among male students. A cross-sectional study involving 460 male students of a private university selected by convenient sampling was conducted using self-administered questionnaires that consists of socio-demographic details as well as knowledge and beliefs about female breast cancer. The prevalence of good knowledge was only 45.2%, there was a significant association between level of knowledge and age, course of study (p=0.02 and < 0.001, respectively). The prevalence of poor belief was 72.6% and the main source of information was the media (84.1 %). There was no significant association between beliefs about female breast cancer and family income, mother’s education and race. However, there was a significant association between beliefs about female breast cancer and age, course of study and father’s education. As a conclusion, the knowledge and beliefs about female breast cancer among the male students was very poor. More education and awareness need to be emphasized; especially the media was the most common source of information in our study.

The Relationship between the Neighborhood Safety and Nutritional Status of Children in Baghdad City, Iraq.

Introduction. The neighborhoods where the children live play an important role in their development physically and mentally. The objective of this study was to assess the relationship between neighborhood safety and child nutritional status in Baghdad city, Iraq. Methods. A cross-sectional study was carried out in Baghdad city, Iraq, among 400 primary school children from 4 schools. BMI-for-age Z score was used to assess the nutritional status of the children. Newly developed questionnaires on neighborhood safety were distributed to the parents to answer them. Results. In this study, males were more predominant than females with 215 participants compared to 185 females. A total of 49% were normal weight, 38.8% either overweight or obese, and only 12.2% underweight. There was a significant relationship between father education, father and mother working status, family income, and children nutritional status (P = 0.10, 0.009, <0.001, 0.37), respectively. The association between neighborhood safety variables and child nutritional status was significant except for worrying about child safety and thinking of leaving the neighborhood (P = 0.082, 0.084), respectively. Conclusion. Nutritional status of school children continues to be a public health issue in Iraq especially Baghdad city. There was a significant association between neighborhood safety and children nutritional status.

Family context and Khat chewing among adult Yemeni women: a cross-sectional study.

Khat chewing is associated with unfavourable health outcomes and family dysfunction. Few studies have addressed the factors associated with khat chewing among Yemeni women. However, the family and husband effects on chewing khat by women have not been addressed. This study aimed to determine the prevalence of khat chewing among Yemeni women and its associated factors, particularly husbands and family factors. A cross-sectional study was conducted among 692 adult Yemeni women in the city of Sana'a in Yemen using structured "face to face" interviews. Mean (±SD) age of women was 27.3 years (±6.10). The prevalence of chewing khat by women was 29.6%. Factors associated with chewing khat among women were chewing khat by husbands (OR = 1.8; 95% CI: 1.26, 2.53), being married (OR = 2.0; 95% CI: 1.20, 3.37), frequent family social gatherings (OR = 1.5; 95% CI: 1.06, 2.10), high family income (OR = 1.57; 95% CI: 1.12, 2.21), larger house (OR = 1.63; 95% CI: 1.16, 2.31), and age of women (OR = 0.64; 95% CI: 0.44, 0.92). It is concluded that khat chewing by women in this study was significantly associated with family factors and with khat chewing by their husbands. Urgent action is needed to control khat chewing particularly among women.