Cortical gradients during naturalistic processing are hierarchical and modality-specific.

Understanding cortical topographic organization and how it supports complex perceptual and cognitive processes is a fundamental question in neuroscience. Previous work has characterized functional gradients that demonstrate large-scale principles of cortical organization. How these gradients are modulated by rich ecological stimuli remains unknown. Here, we utilize naturalistic stimuli via movie-fMRI to assess macroscale functional organization. We identify principal movie gradients that delineate separate hierarchies anchored in sensorimotor, visual, and auditory/language areas. At the opposite/heteromodal end of these perception-to-cognition axes, we find a more central role for the frontoparietal network along with the default network. Even across different movie stimuli, movie gradients demonstrated good reliability, suggesting that these hierarchies reflect a brain state common across different naturalistic conditions. The relative position of brain areas within movie gradients showed stronger and more numerous correlations with cognitive behavioral scores compared to resting state gradients. Together, these findings provide an ecologically valid representation of the principles underlying cortical organization while the brain is active and engaged in multimodal, dynamic perceptual and cognitive processing.

The impact of pain on the quality of life of patients with end-stage renal disease undergoing hemodialysis: a multicenter cross-sectional study from Palestine.

BACKGROUND: Chronic kidney disease is considered as a global health problem. Hemodialysis (HD), following renal transplantation, is the most common form of renal replacement therapy. However, HD may impact the quality of life (QOL). Pain is a frequent complaint among this population that also affects their QOL. The purposes of this study were to assess pain and QOL among end-stage renal disease (ESRD) patients on HD and to examine their association. METHODS: This was a multicenter, cross-sectional study that occurred in Palestine between August and November 2018. Brief Pain Inventory and European Quality of Life scale 5 dimensions (EQ-5D) scale, including its European Quality of Life visual analogue scale (EQ-VAS) component, were used to assess pain and QOL, respectively. RESULTS: A total of 300 participants were included in the final study. The average age of the subjects was 54 ± 16 years. Their median EQ-5D score was 0.68 [0.54-0.88], whereas their median EQ-VAS score was 60 [40-75]. A statistically significant association of pain severity score with EQ-5D score was found (r = - 0.783, p < 0.001). The association between pain interference score and EQ-5D score was also found to be statistically significant (r = - 0.868, p < 0.001). Similarly, pain severity score was significantly assocsiated with EQ-VAS score (r = - 0.590, p < 0.001), the same as was the pain interference score (r = - 0.647, p < 0.001). Moreover, age, gender, BMI, employment, educational level, income level, dialysis vintage, previous kidney transplantation, and chronic medication use were all significantly correlated with QOL. Regression analysis showed that patients aged < 60 years (p < 0.001), those with lower pain severity scores (p = 0.003), and those with lower pain interference scores (p < 0.001) had significantly higher QOL scores. CONCLUSIONS: Pain has a significant negative impact on QOL in ESRD patients undergoing HD. The subgroups that were at higher risk included elderly patients, females, those with higher BMI, those without a formal education, those unemployed, those living with low monthly income, smokers, those who have multiple comorbidities, and patients with longer dialysis vintage. Our findings provide reliable data for educators and clinicians working with HD patients.

Assessment of lower urinary tract symptoms during pregnancy: an observational cross-sectional study from Palestine.

BACKGROUND: Women frequently complain of lower urinary tract symptoms (LUTS) during pregnancy due to multiple physiological and potentially pathological changes. Still, there is limited data on the characteristics of LUTS for pregnant women in Palestine. Therefore, this study was designed to assess LUTS among pregnant women in Palestine, in addition to identifying factors that exacerbate LUTS during pregnancy. METHODS: We devised a cross-sectional, questionnaire-based study that used the Urinary Distress Inventory (UDI) and the Incontinence Impact Questionnaire (IIQ) tools to assess LUTS during pregnancy in an antenatal care clinic setting. Multiple linear regressions were conducted to determine variables that significantly related to LUTS (UDI-6 and IIQ-7 scores as dependent variables). RESULTS: The study recruited 306 pregnant women. Regarding LUTS findings, the participants scored a mean of 31.9 ± 24.9 out of 100 points (6.7 ± 5.2 out of 21) for the IIQ-7 scale and a mean of 31.2 ± 19.2 out of 100 points (5.6 ± 3.4 out of 18) for the UDI-6 scale. Regression analysis showed that older women (p = 0.031), women with a higher body mass index (p < 0.001), and women in the third trimester of pregnancy (p = 0.023), were independently associated with high UDI score. Multiple linear regression analysis showed that obese and overweight patients (p = 0.006) and multiparity (p = 0.026) were independently associated with high IIQ score. CONCLUSIONS: High body mass index is independently associated with both UDI and IIQ scores for LUTS. Several strategies should be arranged to raise the awareness of females of childbearing age in Palestine regarding LUTS during pregnancy and factors which may exacerbate LUTS, such as obesity and multiparity. Thus, preventive measures should be implemented, such as serial assessment of LUTS during antenatal care to respond timely to this frequent problem.

Exploring factors associated with pain in hemodialysis patients: a multicenter cross-sectional study from Palestine.

BACKGROUND: Chronic kidney disease (CKD) is a rising medical concern around the world. End-stage kidney disease (ESKD) is the last stage of CKD stages that necessitates renal replacement therapy (RRT), such as hemodialysis (HD), which seems to be the most commonly used type. However, patients on HD still suffer from high mortality and morbidity rates compared to those who receive a kidney transplant. Therefore, we aimed in this study to assess the prevalence of pain among ESKD patients on HD, as well as to explore the factors that were associated with this complaint. METHODS: We conducted a multicenter cross-sectional study in the West Bank, Palestine, between August and November 2018. We used questionnaire-based direct interviews with subjects. After reviewing previous studies in the field, we developed our questionnaire and included items on patients' social, demographic, and clinical characteristics, including dialysis-related data. It also contained the Brief Pain Inventory (BPI) to assess different aspects of pain symptoms. A convenience sampling technique was used to collect data. RESULTS: Of the 300 participants, 66.3 % reported having chronic pain. HD sessions themselves were the most commonly cited cause for pain (21.6 %). The most commonly cited site of pain was the upper and lower limbs (37.3 %). Paracetamol was the most frequently used pharmacotherapy for pain alleviation. Multiple regression analysis showed that BMI (p = 0.018), gender (p = 0.023), and the number of comorbidities (p < 0.001) were independently associated with pain severity score. CONCLUSIONS: Pain is a highly prevalent symptom among HD patients in Palestine. Subpopulations with higher pain severity include females, patients with higher BMI, and those with multiple comorbidities. Healthcare providers should routinely assess pain in HD patients as it is considered a significant concern. This would involve pain assessment and development of a treatment plan to improve clinical outcomes. The nephrology associations should also push for pain management in HD patients as a clinical and research priority to improve pain-related disability.

An assessment of parents' knowledge and awareness regarding paracetamol use in children: a cross-sectional study from Palestine.

BACKGROUND: Paracetamol, also known as acetaminophen, is one of the most common antipyretic and analgesic over-the-counter (OTC) medicines administered to children due to its efficacy, safety, and availability in many pharmaceutical forms, including suppositories, syrup, and drops. Parents frequently administer the wrong dose of paracetamol by mistake for their children, as reported by many previous studies. We aimed in this study to assess parents' knowledge, attitudes, and practice regarding paracetamol dosing and toxicity, as well as their awareness regarding paracetamol-containing products. METHODS: This was a cross-sectional study that targeted parents of children seeking healthcare services at primary health care centers in the Nablus area in the West Bank, Palestine. We used questionnaire-based interviews with parents for data collection. RESULTS: A total of 300 parents were included in the study. Most of the caregivers surveyed were (87%) females (mothers). About half the parents (50.9%) reported previously using paracetamol as an antipyretic in children under the age of six. A quarter (25.4%) preferred the syrup forms, while 33.8% preferred the suppository dosage form. Medical personnel was the primary source of information for half the caregivers (51.2%). The mean knowledge score about paracetamol was 2.1 (SD = 1.4) out of 6, and the median was 2.0 with an interquartile range of 1.0-3.0. Two hundred seventy-four (95.5%) of the participants scored less than 80% and were considered to have insufficient knowledge. Only 50.9% of parents recognized that paracetamol overdose could result in serious harm. CONCLUSIONS: We found a serious lack of knowledge regarding paracetamol dosing, administration, and potential toxicity among Palestinian parents. We recommend raising awareness regarding this problem among healthcare providers and authorities and working on plans that aim to provide caregivers with accurate and adequate information on dosing, formulation, side effects, and other aspects of paracetamol use, as well as developing effective educational plans targeting healthcare providers, as well as the public.

Assessment of pain and postoperative nausea and vomiting and their association in the early postoperative period: an observational study from Palestine.

BACKGROUND: Postoperative nausea and vomiting (PONV) and postoperative pain (POP) are most commonly experienced in the early hours after surgery. Many studies have reported high rates of PONV and POP, and have identified factors that could predict the development of these complications. This study aimed to evaluate the relationship between PONV and POP, and to identify some factors associated with these symptoms. METHODS: This was a prospective, multicentre, observational study performed at An-Najah National University Hospital and Rafidia Governmental Hospital, the major surgical hospitals in northern Palestine, from October 2019 to February 2020. A data collection form, adapted from multiple previous studies, was used to evaluate factors associated with PONV and POP in patients undergoing elective surgery. Patients were interviewed during the first 24 h following surgery. Multiple binary logistic regression was applied to determine factors that were significantly associated with the occurrence of PONV. RESULTS: Of the 211 patients included, nausea occurred in 43.1%, vomiting in 17.5%, and PONV in 45.5%. Multiple binary logistic regression analysis, using PONV as a dependent variable, showed that only patients with a history of PONV [odds ratio (OR) = 2.28; 95% confidence interval (CI) = 1.03-5.01; p = 0.041] and POP (OR = 2.41; 95% CI = 1.17-4.97; p = 0.018) were significantly associated with the occurrence of PONV. Most participants (74.4%) reported experiencing pain at some point during the first 24 h following surgery. Additionally, the type and duration of surgery were significantly associated with POP (p-values were 0.002 and 0.006, respectively). CONCLUSIONS: PONV and POP are common complications in our surgical patients. Factors associated with PONV include a prior history of PONV and POP. Patients at risk should be identified, the proper formulation of PONV protocols should be considered, and appropriate management plans should be implemented to improve patients' outcomes.

The impact of lower urinary tract symptoms on the quality of life during pregnancy: a cross-sectional study from Palestine.

BACKGROUND: Lower urinary tract symptoms (LUTS) are prevalent among pregnant women. Several articles show the impact of LUTS on pregnant women's quality of life (QoL). This study was designed to examine the impact of non-pathological LUTS on QoL among pregnant Palestinian women. METHODS: A cross-sectional, hospital-based study was conducted on women who were pregnant and receiving regular antenatal care at the obstetrics and gynecology clinic in Rafidia Hospital, Palestine. This self-administered questionnaire included the Urinary Distress Inventory - short-form (UDI-6), the Incontinence Impact Questionnaire - short-form (IIQ-7), the European Quality of Life scale - 5 dimensions (EQ-5D), and the European Quality of Life - visual analogue scale (EQ-VAS). A convenience sampling method was used. In addition to this, multiple linear regression analyses were performed aiming to identify variables that have a significant relationship with QoL (i.e. socio-demographic variables, UDI-6 score, and IIQ-7 score). RESULTS: This study included a total of 306 pregnant women. Participants had a mean age of 26.9 years (SD, 3.6). The subjects scored an average of 31.2 ± 19.2 out of 100 points for the UDI-6 scale and an average of 31.9 ± 24.9 out of 100 points for the IIQ-7 scale. On the other hand, the subjects' average EQ-5D and EQ-VAS scores were 0.76 ± 0.17 and 67.96 ± 19.28 respectively. The subjects' responses on UDI-6 significantly correlated with their responses on both the EQ-5D and EQ-VAS scales (r = - 0.338, p < 0.001 and r = - 0.206, p < 0.001, respectively). Likewise, their responses on IIQ-7 also significantly correlated with their responses on both the EQ-5D and EQ-VAS scales (r = - 0.389, p < 0.001 and r = - 0.329, p < 0.001, respectively). Regression analysis found that the UDI-6 score (p = 0.001) and IIQ-7 score (p < 0.001), were significantly and negatively associated with EQ-5D index scores. CONCLUSIONS: Our study shows a remarkable correlation between LUTS and QoL among pregnant women. Further longitudinal studies are required to assess the status of LUTS in the pre-pregnancy stage to ascertain a more accurate assessment of LUTS or LUTS related intervention and its impact on QoL during pregnancy.

Use and acceptance of complementary and alternative medicine among medical students: a cross sectional study from Palestine.

BACKGROUND: Teaching Complementary and alternative medicine (CAM) in medical schools is becoming prevalent worldwide. Few studies have been conducted to evaluate medical students' knowledge and attitude toward CAM. Therefore, this study was designed to assess CAM knowledge, attitudes, and beliefs among Palestinian medical students. METHODS: This study was developed in a cross-sectional design. It targeted medical students at An-Najah National University, between January and April of 2018. We gathered the data from students using a questionnaire printed as a hard copy. Medical students of both sexes in their 4th, 5th, or 6th year of studies were included in the survey. The questionnaire consisted of 3 sections: demographic characteristics and detailed practices of the participants, their attitude and held beliefs towards CAM, and their knowledge on CAM. Mann-Whitney U Test and Kruskal-Wallis Test were used to test if there were differences between knowledge about CAM and the characteristics of the participants. RESULTS: Of the 300 medical students who were offered the questionnaire, 251 students (43.8% male and 56.2% female) were included in the final analysis. Out of a maximum of 8 points, the mean knowledge score of the participants was 2.0 ± 1.6. The Kruskal-Wallis test showed a statistically significant difference in overall knowledge score among students of different year groups, with students at lower levels obtaining higher scores (P < 0.001). Additionally, the highest knowledge scores were found in students with low income, and students who came from the Palestinian refugee camps (P < 0.001). Students frequently recommended CAM modalities, with herbal medicine being the most recognized and used CAM modality and Ayurvedic medicine being the least recognized and recommended one. Social media was the most popular source of information about CAM, cited by 72.9% of the participants. Participants generally had a good attitude towards CAM but held varying beliefs about it. CONCLUSIONS: In the current study, a knowledge gap regarding CAM was found among medical students in our sample, despite their good attitude towards the subject. Also, there was a general acceptance to include materials on CAM within the curriculum of medical students.

Nurses' knowledge, perceived barriers, and practices regarding cancer pain management: a cross-sectional study from Palestine.

BACKGROUND: Accurate knowledge and good pain evaluation and documentation practices should be present for efficient pain management. In this study, we aimed to assess the knowledge and practices of nurses relating to the management of cancer pain in Palestine, and to determine the barriers to efficient pain control in cancer patients. METHODS: A cross-sectional survey took place at 8 hospitals across Northern West Bank. A convenience sample of 220 Nurses working in governmental and private hospitals in West Bank/Palestine was studied. For that purpose, a questionnaire was developed to assess knowledge, practices, perceived barriers, and delaying processes relating to cancer pain management (CPM). RESULTS: In total, 220 questionnaires were completed with a response rate of 88%. Participants' mean age was 30.34 years. Overall, 69.5% worked in governmental hospitals, 26.8% worked in the private sector and the remainder worked in both governmental and private sectors. The correct response rate to questions that assess knowledge relating to cancer pain control was calculated and a mean knowledge score was found to be 5.1 with a standard deviation of 2.1. A relationship between the knowledge score and the sample characteristics was made and showed that males scored significantly higher (p = 0.001) than females with median scores of 6 [4-7] and 5 [3-6] for males and females, respectively. Inadequate pain assessment (76.8%), insufficient knowledge of pain control (70.5%) and strict regulation on opioid use (69.5%) were the most frequently perceived barriers. Nurses reported that they would assess pain on every round and check all items related to pain assessment. Contacting the physician for the prescription of opioids was cited as the main delaying process by 56.4% of participants. CONCLUSIONS: This study allowed us to recognise the knowledge deficit and the barriers to effective management. On the other hand, the analysis has shown good pain documentation practices among nurses. Those knowledge deficits demonstrate the need for more education about CPM. The improvement of coordination and communication between physicians and nurses seems to play a crucial role in CPM, as contacting physicians was cited as the most delaying process in CPM by nurses.

Getting the nod: Pediatric head motion in a transdiagnostic sample during movie- and resting-state fMRI.

Head motion continues to be a major problem in fMRI research, particularly in developmental studies where an inverse relationship exists between head motion and age. Despite multifaceted and costly efforts to mitigate motion and motion-related signal artifact, few studies have characterized in-scanner head motion itself. This study leverages a large transdiagnostic public dataset (N = 1388, age 5-21y, The Healthy Brain Network Biobank) to characterize pediatric head motion in space, frequency, and time. We focus on practical aspects of head motion that could impact future study design, including comparing motion across groups (low, medium, and high movers), across conditions (movie-watching and rest), and between males and females. Analyses showed that in all conditions, high movers exhibited a different pattern of motion than low and medium movers that was dominated by x-rotation, and z- and y-translation. High motion spikes (>0.3mm) from all participants also showed this pitch-z-y pattern. Problematic head motion is thus composed of a single type of biomechanical motion, which we infer to be a nodding movement, providing a focused target for motion reduction strategies. A second type of motion was evident via spectral analysis of raw displacement data. This was observed in low and medium movers and was consistent with respiration rates. We consider this to be a baseline of motion best targeted in data preprocessing. Further, we found that males moved more than, but not differently from, females. Significant cross-condition differences in head motion were found. Movies had lower mean motion, and especially in high movers, movie-watching reduced within-run linear increases in head motion (i.e., temporal drift). Finally, we used intersubject correlations of framewise displacement (FD-ISCs) to assess for stimulus-correlated motion trends. Subject motion was more correlated in movie than rest, and 8 out of top 10 FD-ISC windows had FD below the mean. Possible reasons and future implications of these findings are discussed.

Nutritional status and quality of life in diabetic patients on hemodialysis: a cross-sectional study from Palestine.

BACKGROUND: End-stage renal disease (ESRD) is a leading cause of death and morbidity worldwide. Malnutrition is a common problem among hemodialysis (HD) patients that negatively impacts their prognosis and is linked to an increase in morbidity and mortality in these patients, as well as a decrease in their quality of life (QOL). In this study, we aimed to evaluate the QOL and to investigate factors that can influence it, including nutritional status, as well as socio-demographic factors, among Palestinian diabetic patients on HD therapy. METHODS: This was a cross-sectional study that occurred at a large hemodialysis center in Palestine. Malnutrition was assessed by the malnutrition-inflammation scale (MIS), and the quality of life was evaluated by using the EuroQoL five-dimensional instrument (EQ-5D). Multivariable linear regression analysis was carried out to look at the effect of multiple variables on QOL. RESULTS: A total of 118 diabetic patients on HD were included. Of these, 66.9% were male, and 60.2% were aged 60 years or higher. Having multiple comorbid diseases (p=0.004) and having been on HD for >4 years (p=0.003) were significantly associated with a higher MIS score, whereas living alone (p=0.037) and having been on HD for >4 years (p=0.002) was significantly associated with lower EQ-5D score. We also observed a significant association between the MIS score and the EQ-5D score(r=-0.616, p<0.001). Multiple linear regression analysis demonstrated that diabetic hemodialysis patients who lived within a family household were positively correlated with the QOL score (standardized coefficient, 0.178; 95% confidence interval (CI), 0.042 to 0.372; p = 0.015), and MIS score was significantly and negatively correlated with QOL scores (standardized coefficient, -0.587; 95% CI, -0.047 to -0.028; p < 0.001). CONCLUSIONS: We found that malnutrition was associated with a lower QOL score among diabetic patients on HD. We recommend general practitioners, dietitians, nephrologists, and nurses to make plans that pay more attention to this group of patients who show evidence of malnutrition. Patients on dialysis for ≥ 4 years, patients who live alone, and those suffering from multiple co-morbid diseases should receive special care due to their higher risk of being impacted by this problem.

Factors associated with self-efficacy in patients with hypertension: a cross-sectional study from Palestine.

BACKGROUND: Self-efficacy is a widely applied psychosocial concept that is commonly used in association with management of chronic diseases, including hypertension. The aim of this study was to assess self-efficacy of hypertension management and patient-physician communication, as well as the factors associated with self-efficacy and patient-physician communication among patients with hypertension in Palestine. METHODS: We conducted face-to-face, questionnaire-based interviews using validated instruments to assess self-efficacy in managing hypertension (Self-Efficacy for Managing Chronic Disease 6-Item Scale (SES6C)) and patient-physician communication (Perceived Efficacy in Patient-Physician Interaction Questionnaire (PEPPI)) in patients with hypertension at the three main primary healthcare centers in Nablus district in northern West Bank, Palestine. We also performed a multiple linear regression analysis to determine the variables independently associated with PEPPI and SES6C scores. RESULTS: We enrolled 377 participants with hypertension in this study. The average age (measured in years) was 56.8 with a standard deviation of 11.6. The mean PEPPI and SES6C scores were 20.0 (SD 4.4) and 41.1 (SD 10.6), respectively. In a multiple linear regression model, subjects who were city dwellers (B=3.597, p=0.004), and subjects with high education levels (B=4.010, p=0.001) achieved higher PEPPI scores, whereas subjects in the normal weight category (B=5.566, p<0.001) and those with higher PEPPI scores (B=0.706, p<0.001) achieved higher SES6C scores. CONCLUSIONS: We found that impairment in self-efficacy was linked to overweight and obesity, as well as lower patient-physician communication. Moreover, our results showed that lower patient-physician communication was independently associated with low education level as well as non-city residency types. We recommend making the appropriate changes by both the policy-makers and the health care providers to improve the health facilities and its services, especially outside the cities. We also suggest holding specific counseling and training session on the management and control of hypertension.

Coronary Artery Calcification and Plaque Characteristics in People Living With HIV: A Systematic Review and Meta-Analysis.

Background Studies have reported that people living with HIV have higher burden of subclinical cardiovascular disease, but the data are not adequately synthesized. We performed meta-analyses of studies of coronary artery calcium and coronary plaque in people living with HIV. Methods and Results We performed systematic search in electronic databases, and data were abstracted in standardized forms. Study-specific estimates were pooled using meta-analysis. 43 reports representing 27 unique studies and involving 10 867 participants (6699 HIV positive, 4168 HIV negative, mean age 52 years, 86% men, 32% Black) were included. The HIV-positive participants were younger (mean age 49 versus 57 years) and had lower Framingham Risk Score (mean score 6 versus 18) compared with the HIV-negative participants. The pooled estimate of percentage with coronary artery calcium >0 was 45% (95% CI, 43%-47%) for HIV-positive participants, and 52% (50%-53%) for HIV-negative participants. This difference was no longer significant after adjusting for difference in Framingham Risk Score between the 2 groups. The odds ratio of coronary artery calcium progression for HIV-positive versus -negative participants was 1.64 (95% CI, 0.91-2.37). The pooled estimate for prevalence of noncalcified plaque was 49% (95% CI, 47%-52%) versus 20% (95% CI, 17%-23%) for HIV-positive versus HIV-negative participants, respectively. Odds ratio for noncalcified plaque for HIV-positive versus -negative participants was 1.23 (95% CI, 1.08-1.38). There was significant heterogeneity that was only partially explained by available study-level characteristics. Conclusions People living with HIV have higher prevalence of noncalcified coronary plaques and similar prevalence of coronary artery calcium, compared with HIV-negative individuals. Future studies on coronary artery calcium and plaque progression can further elucidate subclinical atherosclerosis in people living with HIV.

An assessment of medical students' proficiency regarding the hazards of radiological examinations on the health of workers and patients: a cross-sectional study from Palestine.

BACKGROUND: The use of radiological examination is increasing worldwide. Since radiation exposure can result in many health hazards, medical professionals, as well as medical students, should possess adequate knowledge regarding radiation and its related hazards to protect themselves and the patients. Many studies have assessed medical students' knowledge on this topic, but never in Palestine. In this study, we aimed to examine Palestinian medical students' awareness and knowledge regarding radiological examination modalities and their risks on themselves and their patients. METHODS: This was an observational, cross-sectional, population-based study, conducted to assess the awareness of radiation exposure and its risks among Palestinian medical students. An online questionnaire was implemented on medical students at An-Najah National University. A total knowledge score that ranged from 0 to 22 was calculated for each participant, with higher scores indicating better knowledge regarding radiation doses and the related hazards. RESULTS: Two hundred eighty and seven students participated in our study, with a response rate of 71%. The average knowledge score of the participants was 10.97 ± 4.31 out of a maximum of 22 points. Male participants and participants in advanced study years achieved better knowledge scores (p-values were 0.034 and < 0.001, respectively). Perceived radiology knowledge was significantly associated with the actual knowledge score among the participants (p-value< 0.001). Receiving radiology lectures in fourth and fifth years significantly affected the participants' knowledge score (p-values were < 0.001). CONCLUSIONS: We found a severe lack of knowledge regarding radiation doses and related risks among medical students. Therefore, we recommend that medical schools update and supplement their curriculum regarding knowledge on radiation.

Assessment of Knowledge about First Aid Methods, Diagnosis, and Management of Snakebite among Nursing Students: A Cross-Sectional Study from Palestine.

BACKGROUND: Snakebite is a serious and important medical emergency encountered in many parts of the world. The estimated number of victims of venomous snakebites in Palestine is about 100 to 150 annually, with death occurring in 2 to 3 of them. This study was designed to assess the level of knowledge on the diagnosis and management of snakebites among nursing students in Palestine, as well as their attitude towards snakebites. METHODS: This was a cross-sectional survey that took place at An-Najah National University. Two hundred nursing students were asked to fill a questionnaire that was developed to assess the participants' knowledge and attitude regarding snakebite's diagnosis and management. Different knowledge scores were calculated, and the relationships between students' knowledge and their characteristics were calculated by implementing the Mann-Whitney U test and the Kruskal-Wallis test. The statistical significance limit of p values was set at 0.05. RESULTS: The majority of the participants (57%) were fourth-year students with an average age of 20.7 ± 1. Areas of knowledge and the participants' mean scores on them were as follows: Vipera palaestinae snake, 5.1/13; signs and symptoms, 9.6/16; laboratory investigations, 6.1/10; anti-venom, 4.2/11; and first aid, 6.6/15. The only statistically significant differences in knowledge were between male and female students on Vipera palaestinae (male students scored higher, p value = 0.004) and between different types of residence (village dwellers scored the highest, p value = 0.041). CONCLUSIONS: We found knowledge gaps in many aspects of snakebite's diagnosis and management among nursing students in Palestine. Based on the results of this study, we suggest integrating more materials on this topic in the curriculum of Palestinian nursing schools, as well as more practical training, which will positively reflect on the care for snakebite victims.

An assessment of medical students' proficiency in the diagnosis and management of snakebites: a cross-sectional study from Palestine.

BACKGROUND: Snakebites are emergent and life-threatening injuries that may require intensive care. Physicians face difficulties in dealing with snakebite injuries due to the knowledge gaps in the diagnosis and management of snakebites. The study aimed to assess medical students' knowledge about the diagnosis and management of snakebite injuries, as well as their proficiency in first aid methods in case of snakebite and perception regarding snakes and snakebite injuries. METHODS: A cross-sectional study conducted among 200 medical students in their clinical years at An-Najah National University. A questionnaire was developed and distributed among those students. The questionnaire assessed the students' knowledge regarding the diagnosis and management of snakebites and their attitude regarding snakes and snakebites. The total scores of knowledge were obtained and tested based on the participants' demographic characteristics using the Kruskal-Wallis test and the Mann-Whitney U test. P-values of < 0.05 were considered to be statistically significant. RESULTS: The mean age of participating medical students was 22.2 ± 2.4 (year). Half of these medical students were in there final year of study (sixth year). After the analysis was done, we found a knowledge deficit in snakebite diagnosis and management among medical students. The mean knowledge scores regarding Vipera palaestinae, signs and symptoms, laboratory investigations, anti-venom, and first aid were 3.8/13, 8.2/16, 6.1/10, 3.6/11 and 8.3/15 respectively for medical students. It was found that medical students in higher years of study had a higher knowledge of laboratory investigation, and males were more knowledgeable in the correct way for first aid methods than females (p < 0.036). CONCLUSIONS: The level of knowledge regarding the diagnosis and management of snakebites was not good enough among most of the students. In order to improve their knowledge, snakebite diagnosis and management should be introduced and focused on in medical curriculum. Also, formal first aid training classes for medical students should be introduced in order to teach them the correct and updated methods of first aid as they will be the future health care providers and proper first aid will effectively decrease morbidity and mortality of snakebites.

Idiopathic intracranial hypertension presenting with isolated unilateral facial nerve palsy: a case report.

BACKGROUND: Idiopathic intracranial hypertension, also known as pseudotumor cerebri, is a disorder characterized by increased intracranial pressure of unclear pathogenesis in the absence of other structural and obstructive lesions that is predominantly, although not exclusively, seen in obese women of childbearing age. Patients with idiopathic intracranial hypertension commonly present with a headache, transient visual obscurations, and intracranial noises with some cranial nerves occasionally involved, most commonly CN VI. We report idiopathic intracranial hypertension presenting with isolated complete unilateral facial nerve palsy, as the sole cranial nerve involved, which is a presentation rarely reported in the literature. CASE PRESENTATION: A 40-year-old Hispanic woman with a history of obesity and hypertension presented to our emergency department complaining of bifrontal headache for 3 days associated with nausea, vomiting, transient visual disturbances, and a picture of right-sided cranial nerve VII palsy. Her neurologic examination including other cranial nerves was otherwise normal, but a fundus examination revealed bilateral grade II papilledema. Imaging studies ruled out structural and obstructive lesions as possible causes of her symptoms and lumber puncture results were unremarkable except for an increased opening pressure. She was then started on prednisone and acetazolamide. Two days later, she reported a dramatic improvement in both headache and facial nerve palsy. CONCLUSIONS: Idiopathic intracranial hypertension should be suspected in obese young women presenting with headache and transient visual complaints and some cranial nerve abnormalities. Idiopathic intracranial hypertension is a diagnosis of exclusion and imaging studies should always be performed to rule out other structural and obstructive lesions. In this case report, we aimed to draw attention to the possibility of idiopathic intracranial hypertension presenting with unilateral cranial nerve VII palsy as the only cranial nerve involved, which needs a high index of suspicion by clinicians. The mechanisms of cranial nerve VII palsy in idiopathic intracranial hypertension are not well understood and prompt further investigation.

Developmental hypomyelination in Wolfram syndrome: new insights from neuroimaging and gene expression analyses.

Wolfram syndrome is a rare multisystem disorder caused by mutations in WFS1 or CISD2 genes leading to brain structural abnormalities and neurological symptoms. These abnormalities appear in early stages of the disease. The pathogenesis of Wolfram syndrome involves abnormalities in the endoplasmic reticulum (ER) and mitochondrial dynamics, which are common features in several other neurodegenerative disorders. Mutations in WFS1 are responsible for the majority of Wolfram syndrome cases. WFS1 encodes for an endoplasmic reticulum (ER) protein, wolframin. It is proposed that wolframin deficiency triggers the unfolded protein response (UPR) pathway resulting in an increased ER stress-mediated neuronal loss. Recent neuroimaging studies showed marked alteration in early brain development, primarily characterized by abnormal white matter myelination. Interestingly, ER stress and the UPR pathway are implicated in the pathogenesis of some inherited myelin disorders like Pelizaeus-Merzbacher disease, and Vanishing White Matter disease. In addition, exploratory gene-expression network-based analyses suggest that WFS1 expression occurs preferentially in oligodendrocytes during early brain development. Therefore, we propose that Wolfram syndrome could belong to a category of neurodevelopmental disorders characterized by ER stress-mediated myelination impairment. Further studies of myelination and oligodendrocyte function in Wolfram syndrome could provide new insights into the underlying mechanisms of the Wolfram syndrome-associated brain changes and identify potential connections between neurodevelopmental disorders and neurodegeneration.

Physicians' knowledge, perceived barriers, and practices regarding cancer pain management: a cross-sectional study from Palestine

Background: Pain continues to be a prevalent yet undertreated problem among cancer patients. Achieving adequate control of cancer pain is influenced by physicians' knowledge and practices, which have been found to be inadequate by many studies. In this study, we aimed to examine knowledge and practices, as well as perceived barriers relating to the management of cancer pain among Palestinian physicians. Methods: This cross-sectional study took place at eight hospitals in the northern West Bank in Palestine. A questionnaire was developed and distributed to physicians who were responsible for the care of cancer patients. The questionnaire assessed knowledge, perceived barriers, assessment practices, pain documentation, and delaying processes relating to cancer pain management (CPM). Results: In total, we analysed 109 questionnaires. The mean age of the participants was 32.3 ± 7.0 years and 73.4% had less than 10 years of professional experience. After analysing the data, we found physicians' knowledge to be inadequate, with a mean knowledge score of 6.2 ± 1.9 out of 14. The barriers that were perceived by the highest percentages of physicians to affect CPM were inadequate pain assessment (89%), insufficient experience (79.8%), and insufficient knowledge (76.1%), all of which are staff-related. However, 65% reported assessing pain on every round and 70% asked about all items related to the nature of pain. Finally, obtaining opioids from the pharmacy was the most recognized delaying step in CPM. Conclusions: Despite reporting good practices, physicians showed substantial knowledge deficits regarding CPM. Besides, many barriers appear to impede effective CPM. Therefore, appropriate educational programmes and policy changes are recommended in order to improve professional performance as well as patient care (AU)