Do stroke services still show sex differences? A multicenter study.

BACKGROUND: The issue of sex differences in stroke has gained concern in the past few years. However, multicenter studies are still required in this field. This study explores sex variation in a large number of patients and compares stroke characteristics among women in different age groups and across different countries. METHODS: This multicenter retrospective cross-sectional study aimed to compare sexes regarding risk factors, stroke severity, quality of services, and stroke outcome. Moreover, conventional risk factors in women according to age groups and among different countries were studied. RESULTS: Eighteen thousand six hundred fifty-nine patients from 9 countries spanning 4 continents were studied. The number of women was significantly lower than men, with older age, more prevalence of AF, hypertension, and dyslipidemia. Ischemic stroke was more severe in women, with worse outcomes among women (p: < 0.0001), although the time to treatment was shorter. Bridging that was more frequent in women (p:0.002). Analyzing only women: ischemic stroke was more frequent among the older, while hemorrhage and TIA prevailed in the younger and stroke of undetermined etiology. Comparison between countries showed differences in age, risk factors, type of stroke, and management. CONCLUSION: We observed sex differences in risk factors, stroke severity, and outcome in our population. However, access to revascularization was in favor of women.

Stroke in women: experience in a developing country.

BACKGROUND: Several studies have addressed gender differences in stroke. Yet, results are diverse, and research is still required in different populations. So, this study investigates variation in stroke according to gender in a developing country. METHODS: This is a registry-based, retrospective observational cross-sectional study comparing men and women as regards age, risk factors, stroke severity, quality of services, and stroke outcome. RESULTS: Data analyzed comprised 4620 patients. It was found that men outnumbered women, while women had an older age, more prevalence of hypertension and atrial fibrillation, with severer strokes and worse outcomes. However, there was no gender difference in promptness nor frequency of administration of revascularization therapies. CONCLUSION: Despite the gender difference in risk factors and stroke severity, we could not detect any significant disparity in acute stroke services provided to either gender. Among age categories in women, we identified differences in acute ischemic stroke subtypes, and acute management in favor of older age.

A randomized pilot study of the efficacy and safety of loading ticagrelor in acute ischemic stroke.

BACKGROUND: Ticagrelor is one of the most recent antiplatelet drugs to be approved to treat ischemic heart disease. Its efficacy may exceed aspirin in improving clinical outcomes in patients with acute ischemic stroke who are ineligible for rt-PA. OBJECTIVES: We evaluated the safety regarding hemorrhagic complications (as a primary endpoint) and the efficacy (as a secondary endpoint) of a 180-mg loading dose of ticagrelor given within 9 h from the onset of the first-ever non-cardioembolic ischemic stroke. METHODS: We conducted our study on patients aged 18-75 years who presented with their first clinically manifested non-cardioembolic ischemic stroke and were recruited from the emergency department OF Kafr El-Sheik University Hospitals, Egypt. Eligible patients randomly received ticagrelor or aspirin loading and maintenance doses. Screening, randomization, and initiation of treatment all occurred within the first 9 h of stroke onset. RESULTS: Eighty-five patients received ticagrelor, and 84 received aspirin. Patients who received ticagrelor had a better clinical outcome in terms of NIHSS improvement at 2 days and 1 week of discharge and a favorable mRS score after 1 week of discharge and at 90-day follow-up. There was no significant difference between the two groups regarding hemorrhagic adverse effects. CONCLUSION: This pilot study found that ticagrelor had a better clinical outcome than aspirin based on NIHSS and mRS in acute ischemic stroke patients who received it within 9 h from symptom onset and had a shorter hospital stay duration. Ticagrelor was non-inferior to aspirin regarding hemorrhagic complications. TRIAL REGISTRATION: We registered our trial on ClinicalTrials.gov, named after "ticagrelor versus aspirin in ischemic stroke," and with a clinical trial number (NCT03884530)-March 21, 2019.

Cognitive impairment in asymptomatic cerebral arterial stenosis: a P300 study.

BACKGROUND: Cerebral arterial stenosis (CAS), in the absence of a structural lesion, can result in cognitive impairment that represents an ongoing contention among studies. Accordingly, we investigated cognitive functions in asymptomatic patients with CAS, using P300 which is a neurophysiological tool. We also compared cognition in intracranial stenosis (ICS) and extracranial stenosis (ECS). METHODS: Asymptomatic patients with CAS (≥ 70%) in the absence of structural brain lesions were categorized into ICS and ECS groups of 15 patients each, in addition to 15 normal controls. MRI, MRA, CT angiography, P300 analysis, Mini-Mental State examination (MMSE), Wisconsin Card Sorting Test (WCST), and Wechsler Memory Scale Test-Revised (WMST) were performed to all patients. RESULTS: Impairment on all cognitive scales ranged from 70 up to 100% among CAS group. Prolonged p300 latency and reaction time correlated with worse performance on WMST (p = 0.02), while lower amplitude and decreased accuracy correlated with more errors on WCST (p = 0.01). ICS scores on WCTS were lower than those of ECS group (p = 0.001), while ECS had a longer reaction time (p = 0.02) and lower scores on MMS and WMST than those of ICS group (p = 0.03). CONCLUSION: Patients with asymptomatic CAS had a high prevalence of cognitive dysfunction which places them at risk of higher morbidity. ICS group showed impairment on executive functions, while the ECS group showed predilection to memory and information processing dysfunction.

Sinus arrest following acute lateral medullary infarction.

Lateral medullary syndrome (LMS) is an ischemic stroke of the medulla oblongata that involves the territory of the posterior inferior cerebellar artery. LMS is often missed as the cause of autonomic dysregulation in patients with recent brain stem stroke. Due to the location of the nucleus tractus solitarius (NTS), the dorsal vagal nucleus, and the nucleus ambiguous in the lateral medulla oblongata, patients with LMS occasionally have autonomic dysregulation-associated clinical manifestations. We report a case of LMS-associated autonomic dysregulation. The case presented by recurrent syncope, requiring permanent pacemaker placement. This case shows the importance of recognizing LMS as a potential cause of life-threatening arrhythmias, heart block, and symptomatic bradycardia. Extended cardiac monitoring should be considered for patients with medullary strokes.

Rhino-orbito-cerebral mucormycosis during the COVID-19 third wave in 2021: an Egyptian preliminary report from a single tertiary hospital.

COVID-19 is a pandemic disease which predominantly affects the respiratory system with high critical care mortality and morbidity; however, it also causes multi-organ dysfunction in a subset of patients. Although causality between COVID-19 and mucormycosis remains unclear, many factors including glucocorticoids, worsening of blood glucose control, and viral-induced lymphopenia have been attributed to cause mucormycosis in patients with COVID-19. In COVID-19 patients, especially those who need oxygen support, inflammatory and cytokine storm or usage of steroids make the immune system weak. This may pave the way for opportunistic infections including mucormycosis. We report fourteen cases of COVID-19 infection, who developed rhino-orbito-cerebral mucormycosis, during treatment. Early recognition of this life-threatening infection is the key to allow for optimal treatment and improved outcomes.

Did COVID-19 impact stroke services? A multicenter study.

BACKGROUND: It has been reported that acute stroke services were compromised during COVID-19 due to various pandemic-related issues. We aimed to investigate these changes by recruiting centers from different countries. METHODS: Eight countries participated in this cross-sectional, observational, retrospective study by providing data from their stroke data base. We compared 1 year before to 1 year during COVID-19 as regards onset to door (OTD), door to needle (DTN), door to groin (DTG), duration of hospital stay, National Institute of Health Stroke Scale (NIHSS) at baseline, 24 h, and at discharge as well as modified Rankin score (mRS) on discharge and at 3 months follow-up. RESULTS: During the pandemic year, there was a reduction in the number of patients, median age was significantly lower, admission NIHSS was higher, hemorrhagic stroke increased, and OTD and DTG showed no difference, while DTN time was longer, rtPA administration was decreased, thrombectomy was more frequent, and hospital stay was shorter. mRS was less favorable on discharge and at 3 months. CONCLUSION: COVID-19 showed variable effects on stroke services. Some were negatively impacted as the number of patients presenting to hospitals, DTN time, and stroke outcome, while others were marginally affected as the type of management.

A pilot study of the ticagrelor role in ischemic stroke secondary prevention.

INTRODUCTION: Ticagrelor is one of the most recent antiplatelet drugs used to treat ischemic heart disease. Its efficacy may equal or exceed aspirin in improving clinical outcomes in patients with acute ischemic stroke who are ineligible for rt-PA. AIM OF THE WORK: We aimed at evaluating the safety (as a primary endpoint) and efficacy (as a secondary endpoint) of a 180 mg loading dose of ticagrelor given within 9 h from the onset of first-ever ischemic stroke. METHODS: We conducted an open-label, randomized prospective controlled clinical trial between May 2019 and September 2020 on patients who presented with their first-ever ischemic stroke and were recruited from the emergency department, of Kafr el-sheik University Hospitals, Egypt. Eligible patients randomly received aspirin or ticagrelor loading and maintenance doses. Treatment began within 9 h of stroke onset. RESULTS: Aspirin was given to 84 patients; ticagrelor was given to 85. There was no significant difference between the 2 groups regarding the hemorrhagic and nonhemorrhagic complications. Patients who received ticagrelor had a better outcome regarding NIHSS improvement at 2 days and 1 week or discharge and a favorable mRS score after 1 week or discharge and at 90-day follow-up. CONCLUSION: Ticagrelor was noninferior to aspirin regarding safety profile. Compared with aspirin, ticagrelor had a better clinical outcome based on NIHSS and mRS in first-ever acute ischemic stroke patients who received it within 9 h from symptom onset, leading to a shorter hospital stay.

Vitamin D receptor gene polymorphism in patients with osteomalacic myopathy in Egypt.

INTRODUCTION: Vitamin D works by binding to vitamin D receptor (VDR). The muscle involvement in hypovitaminosis D was broadly named osteomalacic myopathy. METHODS: A case control study involved 20 female patients diagnosed with osteomalacic myopathy compared with 15 age-matched healthy female controls. We assessed both for VDR genotype single-nucleotide polymorphisms (SNP) at 3 sites (ApaI, BsmI, and FokI). RESULTS: ApaI and BsmI genotypes distribution in both groups showed non-significant difference unlike FokI genotypes in which we found significantly higher percentages of single allele mutation in patients vs. controls. CONCLUSION: The relation of VDR gene SNPs to muscle function was studied before but in healthy subjects. We tried to correlate if presence/absence of a certain mutation is responsible for the appearance of osteomalacic myopathy.

Pre-micro RNA polymorphism detection in small versus large vessel disease in stroke Egyptian patients.

Stroke is the main cause of adult disability and is responsible for around 11% of deaths all over the world. Ischemic stroke encompasses about 80-85% of total stroke cases. Several studies have shown the relation between microRNAs polymorphism and ischemic stroke. The aim of the study was to evaluate the influence of three common single nucleotide polymorphisms in pre-miRNAs (hsa-miR-146a/rs2910164, hsa-miR-196a2/rs11614913 and hsa-miR-499/rs3746444) on individual susceptibility to the risk of ischemic stroke subtypes in Egyptian population with 117 ischemic stroke patients. Results showed that hsa-miR-146a/rs2910164 was significantly associated with the risk of small vessel disease stroke in Egyptian population with no significant association between hsa-miR-196a2/rs11614913 and hsa-miR-499/rs3746444 with the risk of ischemic stroke. Therefore, it can be concluded that miR-146a/rs2910164 polymorphism is involved in the vulnerability to small vessel disease ischemic stroke risk in Egyptian population.

The Clinical Characteristics of Patients with Pre-Existing Leukoaraiosis Compared to Those Without Leukoaraiosis in Acute Ischemic Stroke.

BACKGROUND: Leukoaraiosis (LA) is a finding in the elderly, that might be asymptomatic or can impact their motor and cognitive functions. We studied the presence of LA in the MRI of patients with AIS and its impact on functional outcome at 3 months. METHODS: 500 consecutive patients diagnosed as AIS were enrolled. Medical history included pre-medication by antiplatelets or statins, and vascular risk factors were reported by history and laboratory investigations. Severity of stroke was assessed by NIHSS and stroke outcome was evaluated on discharge and at 3 months by modified Rankin scale (mRS). LA was diagnosed by MRI-FLAIR sequence and delineated from acute infarction by diffusion-weighted image. And accordingly, patients were divided into group A (absent LA) and group B (present LA). RESULTS: 460 patients completed the study, with 53% of patients on antiplatelet therapy and 11.7% on statins prior to stroke. The percentage of patients with LA was significantly more than those without LA. Patients with LA showed a significantly higher age, more frequent and longer duration of diabetes and hypertension, ischemic heart disease, previous stroke/TIA and antiplatelet intake. Microbleeds were more and mRS was worse in LA group. CONCLUSION: The presence of LA in the background MRI of AIS patients is accompanied by the presence of more risk factors, and unfavorable outcome. Pre-medication with antiplatelets did not prevent the incidence of a new stroke especially in LA group. This might necessitate the identification of some medication for secondary prevention in patients with small vessel disease.

Clinical Characteristics of Borderzone Infarction in Egyptian Population.

OBJECTIVES: In this research we wanted to highlight the importance of defining Borderzone infarctions (BZI) as a separate subtype in stroke classifications. We thus studied cases of isolated BZI, small vessel disease (SVD), and large vessel disease (LVD), to identify their points of similarities and difference in a sample of Egyptian patients. METHODS: This is a cross-sectional (observational) study. Consecutive 637 acute ischemic stroke patients were recruited over a 2 year period, from 2 stroke units of Ain Shams University hospitals in Egypt. Medical history and laboratory investigations were done to identify risk factors. National Institute of Health Stroke Scale (NIHSS) was performed on admission, and modified Rankin scale (mRS) on admission, and after 3 months. MRI brain was done to identify stroke subtype; MRA and carotid duplex were used to define vascular status. RESULTS: Among the studied group of patients, 72 (11.3%) had BZI, 145 (22.8%) had SVD, 165 (26%) had LVD, and 255 were excluded as they had either undetermined, or mixed etiology. BZI showed significantly older age, early confluent lesions, more disease severity by NIHSS, and worst outcome by mRS (P < 0.05). SVD had more microbleeds than BZI and LVD. LVD showed lower prevalence of hypertension and lower high-density lipoprotein levels. CONCLUSIONS: Isolated BZI, SVD, and LVD infarctions have characteristic risk factors and clinical patterns. Further studies are needed to identify if they are different from cases with mixed pathology. This could have an impact on the selection of primary and secondary preventive measures appropriate to each type.

Urban Versus Rural Egypt: Stroke Risk Factors and Clinical Profile: Cross-Sectional Observational Study.

BACKGROUND: Egypt is a densely populated country with living habits and health care services that differ from urban to rural regions. We aimed to study how characteristics of stroke vary among these regions. METHODS: This is a cross-sectional observational study of ischemic stroke, thus hemorrhagic and venous strokes were excluded. A total of 1475 ischemic stroke patients were recruited for analysis from a tertiary hospital in Cairo representing urban area and from a secondary care hospital in Suhag representing rural region. RESULTS: Analysis was done for 1143 ischemic stroke patients from urban and 332 from rural area. Onset to door was shorter in urban. Urban patients showed an older age and higher prevalence of hypertension and diabetes (65.9%, 48.6% respectively), while rural patients were characterized by female preponderance (51.5%), more dyslipidemia, smoking 44.6%, stroke in young 20.5%, atrial fibrillation 23.8% % and recurrent stroke 44.3%. Rural cases showed a severer deficit at onset and poorer outcome. CONCLUSION: Vascular risk factors, stroke type, and presentation tend to differ in Egypt according to the geographic distribution whether urban or rural. Studying patterns of such difference may aid in planning specific targeted preventive and therapeutic strategies for stroke in urban and rural Egypt.

The budget impact of alteplase in the treatment of acute ischemic stroke in Egypt.

Introduction: Stroke is the second leading cause of mortality worldwide. Five percent of all the disability-adjusted life years (DALYs) lost around the world are attributed to stroke. This study aimed to assess the economic burden of acute ischemic stroke (AIS) in Egypt and reveal the benefits of alteplase treatment by measuring the resource use and costs associated with this treatment compared to the standard of care and extrapolate the overall budget impact of alteplase to the local Egyptian setting over a 5-year time horizon from a societal perspective. Methods: A budget impact model was developed to estimate the impact of adding alteplase to the current treatment of AIS patients within the Egyptian healthcare setting. The efficacy data for both arms of the model were sourced from a systematic review of the literature. Resource use and cost data were sourced from a retrospective study. Proportions of patients potentially eligible for treatment and the treatment time distributions were estimated from an analysis of the results of this retrospective data collection. A univariate sensitivity analysis was conducted to assess the robustness of the model results. The input parameters varied between plausible extremes based on a review of available evidence. Results: The total annual costs with alteplase treatment [i.e., drug, symptomatic intracerebral hemorrhage (ICH) management, acute hospitalization, and post-hospitalization costs] for the targeted patients from a societal perspective were estimated to be less than the total annual costs without alteplase. This resulted in savings of approximately EGP 37.2 million ($ 1.2 million), EGP 14.2 million ($ 458.06), EGP -33.0 million ($ -1.06 million), EGP -54.0 million ($ -1.74 million), and EGP -89.8 million ($ -2.89 million) for each of the 5 years, respectively. In year 1, more than 2,787 patients (+30.1%) achieved an excellent outcome and <1,204 patients (-22.3%) had a poor outcome when treated with alteplase. The savings in acute hospitalization and post-hospitalization costs offset the increase in drug and ICH management costs in the alteplase group compared to treatment without alteplase. The total cumulative cost savings for alteplase in AIS patients were estimated at EGP -228,146,871 ($ -7,359,576) over 5 years. Conclusion: The budget impact model estimates suggest that from a societal perspective, alteplase is likely to be a cost-saving option for the treatment of AIS in Egypt due to the treatment benefits, resulting in savings in acute hospitalization and annual post-hospitalization costs.

Creutzfeldt-Jakob disease in a post-COVID-19 patient: did SARS-CoV-2 accelerate the neurodegeneration?

Background: Creutzfeldt-Jakob disease (CJD) is a rare, fatal neurodegenerative disorder, with few months as a usual duration from onset to death. Case presentation: In this case report, a patient of Sporadic CJD (sCJD) who presented one month after severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection. The diagnosis of this case was established after confirming findings from clinical, neurophysiology, radiological, and laboratory features of this disease. Conclusion: Putting in mind all the updated data on the pathogenesis of CJD and the immune responses to SARS-CoV-2, we can suggest that COVID-19 can lead to accelerated pathogenesis and exaggerated manifestations of this fatal neurodegenerative disease.

Stroke services in MENA: What is there and what is needed.

OBJECTIVES: Stroke represents a health care challenge to most parts of the world including the Middle East and North Africa (MENA) region. The MENA represents 6% of the world population with an age-standardized stroke rate of 87.7 (78.2-97.6) per 100,000 population. This number is subject to increase given that the cause of morbidity has recently shifted from infectious diseases to non-communicable diseases. Thus, in the coming years, treatment of stroke will pose a major burden on MENA countries which mostly lie in the low to middle income economies. Accordingly, we need to study the state of MENA stroke services in order to recognize and further inform policy makers about any gaps that need to be bridged in this domain. METHODS AND RESULTS: Stroke specialists representing 16 countries filled an online survey that included: screening for risk factors, acute management, diagnostics, medications, post-discharge services, and stroke registries. Results showed that 11 countries screen for risk factors, 16 have neuroimaging studies, 15 provide intravenous thrombolysis (IVT), 13 mechanical thrombectomy (MT) while medications for secondary prevention are available in all countries. However, stroke units are not equally available and even absent in 4 countries, and despite the availability of IVT yet, the rate of administration is still low in 6 countries (<5%), and ranges from 5-20% in 7 countries. Stroke registries and training still need to be implemented in most countries. CONCLUSION: Although imaging, revascularization therapies and medications for secondary prevention are available in most MENA countries, yet the rate of revascularization is low, so is the number of stroke units insufficient in some countries. Additionally, registries and structured training are still defective. Further field studies are required for more accurate determination of the status of stroke services in the MENA region.

Post-COVID isolated subclavian artery dissection with multiple cerebral infarctions.

Background: Coronavirus disease 2019 (COVID-19) is a pandemic disease which predominantly affects the respiratory system with high critical care mortality and morbidity, yet it also causes multiple organs dysfunction in affected patients. There is a strong evidence that it increases the susceptibility of cerebrovascular strokes in such patients. Besides this prothrombotic complication, arterial dissection can be one of its mechanisms increasing the risks of stroke. Case presentation: Herein, we report a case of spontaneous isolated subclavian artery dissection in a COVID-19 patient. Sixty-one-year-old female presented with spontaneous isolated subclavian artery dissection without any traumatic events nor history of connective tissue disorders. She had left upper limb ischemia followed by cerebellar, thalamic and occipital infarctions. Whether this patient's subclavian artery dissection was triggered by exaggerated inflammatory response or arteriopathy secondary to COVID-19 remains speculative. Conclusions: Nonetheless, arterial dissection can be one of its complications, it is essential for treating physicians to be attentive for the diversity of COVID-19 clinical manifestations.

Lateralized readiness potentials can identify hemisphere of recovery in stroke patients.

BACKGROUND: Event related cortical potentials related to motor action are referred to as movement related cortical potentials. The late component of which is the readiness potential (RP) and its polarity is more negative in the hemisphere responsible for planning of motor action. This lateralized nature of RP during unilateral hand movement is studied as lateralized readiness potential (LRP) by calculating the contralateral-minus-ipsilateral difference wave for each hand. OBJECTIVE: The aim was to identify the hemisphere contributing to motor recovery in acute and chronic stroke patients through recording LRPs. METHODS: Twenty-nine cases with cerebrovascular stroke (15 acute and 14 chronic) were included in the study. EEG was recorded in response to self-cued button presses by the paretic side to obtain the averaged LRP amplitude. The hemisphere with greater negativity was considered the side of recovery. Functional recovery was assessed by Fugl Meyer test. RESULTS: In acute cases, recovery was more related to LRP activity in the contralesional hemisphere (73%), whereas lateralization was equal in chronic cases; 50% in either group. LRP amplitude was higher in the contralesional hemisphere (p = 0.02). Functional recovery assessed by the Fugl Meyer test (FM) was similar whether recovery was ipsi- or contralesional. CONCLUSIONS: Early after stroke, motor recovery is more likely to involve compensatory activity in the contralesional hemisphere, while in the chronic phase, the ipsilesional hemisphere may recover its function and become more active. Further research is needed to verify if the technique mentioned in our study could be used to guide customized NIBS protocols tailoring the optimal site and parameters for each patient.

Stroke services in Africa: What is there and what is needed.

BACKGROUND: Over the past few years, the incidence and prevalence of stroke has been rising in most African countries and has been reported as one of the leading causes of morbidity and mortality. To study this problem, we need to realize the quality and availability of stroke care services as a priori to improve them. METHODS AND RESULTS: In this study, we investigated the availability of different stroke-related services in 17 countries from different African regions. An online survey was conducted and fulfilled by stroke specialists and included primary prevention, acute management, diagnostic tools, medications, postdischarge services, and stroke registries. The results showed that although medications for secondary prevention are available, yet many other services are lacking in various countries. CONCLUSION: This study displays the deficient aspects of stroke services in African countries as a preliminary step toward active corrective procedures for the improvement of stroke-related health services.