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BACKGROUND: Liver abscesses, particularly pyogenic and amoebic types, pose a significant healthcare challenge, especially in developing countries. Accurate differentiation and effective treatment of these abscess types are crucial in emergency medical settings. This study aims to analyze the incidence, clinical characteristics, and treatment outcomes of pyogenic and amoebic liver abscesses in a trauma and emergency department setting. METHODS: Conducted at the Indira Gandhi Institute of Medical Sciences (IGIMS), Patna, this one-year observational study involved 100 patients diagnosed with liver abscesses. The study employed a comprehensive approach, examining incidence rates, demographic trends, clinical presentations, treatment modalities, and outcomes, including recurrence rates. RESULTS: The study observed a higher incidence of pyogenic liver abscesses, accounting for 60% of cases (n=60), compared to amoebic liver abscesses, which constituted 40% (n=40). In terms of demographics, pyogenic liver abscesses were more prevalent among older males, with the average age being 48 years, and 70% (n=42) of the patients were male. In contrast, amoebic liver abscess patients had an average age of 42 years, with 60% (n=24) being male. Key clinical findings revealed that pyogenic liver abscess cases (n=60) had higher white blood cell counts and elevated liver enzyme levels than those with amoebic liver abscesses (n=40). The treatment outcomes indicated high success rates for both types of liver abscesses. Pyogenic liver abscesses had a success rate of 90% (n=54), while amoebic liver abscesses showed a slightly higher success rate at 95% (n=38). However, there was a notable difference in recurrence rates: pyogenic liver abscesses had a recurrence rate of 8.3% (n=5), whereas amoebic liver abscesses had a lower recurrence rate of 2.5% (n=1). The logistic regression analysis conducted to identify potential predictors of treatment success did not reveal any statistically significant factors across both types of liver abscesses. CONCLUSION: The study highlights a higher incidence of pyogenic liver abscesses in an urban Indian healthcare setting and the complexity of predicting treatment outcomes based on demographic and clinical factors. The findings emphasize the need for nuanced clinical approaches and vigilant post-treatment monitoring, especially for pyogenic liver abscesses. They also underscore the importance of further research to explore additional variables influencing liver abscess treatment outcomes.
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Brain spaces around (perivascular spaces) and alongside (paravascular or Virchow-Robin spaces) vessels have gained significant attention in recent years due to the advancements of in vivo imaging tools and to their crucial role in maintaining brain health, contributing to the anatomic foundation of the glymphatic system. In fact, it is widely accepted that peri- and para-vascular spaces function as waste clearance pathways for the brain for materials such as ß-amyloid by allowing exchange between cerebrospinal fluid and interstitial fluid. Visible brain spaces on magnetic resonance imaging are often a normal finding, but they have also been associated with a wide range of neurological and systemic conditions, suggesting their potential as early indicators of intracranial pressure and neurofluid imbalance. Nonetheless, several aspects of these spaces are still controversial. This article offers an overview of the current knowledge and magnetic resonance imaging characteristics of peri- and para-vascular spaces, which can help in daily clinical practice image description and interpretation. This paper is organized into different sections, including the microscopic anatomy of peri- and para-vascular spaces, their associations with pathological and physiological events, and their differential diagnosis.
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Epilepsy, a neurological disorder characterized by recurrent seizures, and diabetes, a metabolic disorder characterized by impaired regulation of glucose levels, are two distinct conditions that may appear unrelated at first glance. Nevertheless, recent scholarly investigations have revealed these entities' intricate and ever-evolving interplay. This review initially delves into the intricate interplay between epilepsy and its potential ramifications on glycemic control. Seizures, particularly those accompanied by convulsive manifestations, have the potential to induce acute perturbations in blood glucose levels via diverse mechanisms, encompassing the liberation of stress hormones, the emergence of insulin resistance, and the dysregulation of the autonomic nervous system. Comprehending these intricate mechanisms is paramount in customizing productive strategies for managing diabetes in individuals with epilepsy. On the contrary, it is worth noting that diabetes can substantially impact the trajectory and control of epilepsy. The correlation between hyperglycemia and an elevated susceptibility to seizures, as well as the potential for exacerbating the intensity of epilepsy, has been established. This narrative review offers a concise exposition of the intricate interplay between epilepsy and glycemic control within diabetes management. The objective of exploring reciprocal influences, underlying mechanisms, and common risk factors is to augment the clinical comprehension of this intricate interconnection. In essence, this acquired knowledge possesses the potential to serve as a guiding compass for healthcare professionals, enabling them to craft bespoke therapeutic approaches that enhance the holistic welfare of individuals grappling with the coexistence of epilepsy and diabetes.
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Arthrogryposis multiplex congenita (AMC) is an uncommon condition present from birth that is marked by a combination of weakened muscles and multiple joint contractures. We present a case of a 2-year-old boy with AMC, who was born to consanguineous parents in Saudi Arabia. He presented with musculoskeletal abnormalities of all four limbs, including symmetric contractures in multiple joints of the body, bilateral developmental dysplasia of the hip, and vertical talus. Dysmorphic features included low-set ears, chin recession, triangular face, and nevus flammeus on the face. The child also had lactose intolerance, gastritis, inguinal hernia, and right-sided undescended testis. Surgical interventions were planned after a multidisciplinary team discussion. This case report highlights the good prognosis of AMC with all four-limb involvement and the importance of a thorough physical examination and a multidisciplinary approach to the diagnosis and management of AMC.
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BACKGROUND: Plasmablastic lymphoma is a rare type of non-Hodgkin lymphoma that generally presents an aggressive clinical course. It is strongly associated with human immunodeficency virus (HIV) infection, and the most common site of involvement is the oral cavity. Although extraoral PBL has been reported in several places, small intestine involvement is extremely rare. CASE PRESENTATION: Here, we describe an exceptionally rare case of a 24-year-old immunocompetent Asian Male patient with newly diagnosed plasmablastic lymphoma of the duodenum. The patient was admitted to our oncology facility due to the patient's clinical course, which included persistent vomiting, hematemesis, weight loss, and generalized weakness. Computed tomography of the abdomen (triphasic) of the patient showed thickness at the 2nd part of the duodenum measuring 2.6 cm in width and 16 cm in length blocking the pancreatic and common bile ducts by entering the second section of the duodenum. The biopsy specimen's pathological investigation indicated abnormal cells with plasmacytoid characteristics and a high proliferation index. The diagnosis of PBL was confirmed by immunohistochemical profiling. Supportive therapies like blood transfusions, antacids, and antiemetics were started to manage the patient's symptoms. Palliative radiation was also anticipated for the lesion site. CONCLUSIONS: Duodenal involvement to the extent seen in our patient is exceptionally rare and, to the best of our knowledge, has hardly been described. The main goal of the article is to review the literature and report a case.
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Linfoma Inmunoblástico de Células Grandes , Linfoma no Hodgkin , Linfoma Plasmablástico , Humanos , Masculino , Adulto Joven , Adulto , Linfoma Plasmablástico/complicaciones , Linfoma Plasmablástico/diagnóstico , Linfoma Plasmablástico/terapia , Linfoma Inmunoblástico de Células Grandes/patología , Duodeno/diagnóstico por imagen , Duodeno/patología , Progresión de la EnfermedadRESUMEN
Impairment in ventricular relaxation and preserved left ventricular ejection fraction are the two main features of heart failure with preserved ejection fraction (HFpEF) a difficult clinical condition. Therapeutic choices for HFpEF patients are still scarce despite its rising frequency and negative effects on morbidity and mortality, necessitating creative methods to enhance results. The increased thromboembolic risk seen in these individuals raises questions about the relevance of anticoagulation in the therapy of HFpEF. Although anticoagulation has been shown to be beneficial in heart failure with decreased ejection fraction (HFrEF) and other high-risk cardiovascular disorders, its efficacy and safety in HFpEF present a challenging therapeutic challenge. Anticoagulants have been the subject of clinical trials in HFpEF, but the results have been conflicting, giving clinicians only a little information with which to make decisions. The decision-making process is made more difficult by worries about potential bleeding hazards, particularly in susceptible elderly HFpEF patients with other comorbidities. The link between heart failure and anticoagulant medication in HFpEF is thoroughly analyzed in this narrative review. In HFpEF, cardiac fibrosis and endothelial dysfunction create a prothrombotic milieu, as is highlighted in this passage. Also covered are recent developments in innovative biomarker research and cutting-edge imaging techniques, which may provide ways to spot HFpEF patients who might benefit from anticoagulation. This therapeutic conundrum may be resolved by using precision medicine strategies based on risk classification and individualized therapy choices. This review emphasizes the need for more research to establish the best use of anticoagulation in HFpEF within the framework of personalized therapy and shared decision-making. To successfully manage thromboembolic risk and reduce bleeding consequences in HFpEF patients, it is essential to perform well-designed clinical studies and advance our understanding of the pathophysiology of HFpEF. These developments may ultimately improve the prognosis and quality of life for people who suffer from this difficult and mysterious ailment.
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Optimal treatment regimen for patients with antiphospholipid syndrome (APS) remain unclear. Therefore, the authors sought to compare the outcomes of vitamin K antagonists (VKAs) vs. direct oral anticoagulants (DOACs) in patients with APS. Methods: MEDLINE, Embase, and Cochrane Central databases were searched for randomized controlled trials comparing efficacy and safety of VKAs and DOACs inhibitors in patients with APS. Recurrent thrombosis, all-cause mortality, stroke, adverse reactions, and bleeding were among outcomes of interest. Mantel-Haenszel weighted random-effects model was used to calculate relative risks (RRs) with 95% CIs. Results: The analysis included 625 patients from four randomized controlled trials and one post hoc analysis. Meta-analysis showed statistically non-significant difference between DOACs inhibitors and VKAs in the recurrent thrombosis risk (arterial or venous) [RR 2.77 (95%, CI 0.79, 9.65); P=0.11, I2=50%]. Consistent results were revealed among patients with the previous history of arterial thrombosis [RR 2.76 (95% CI 0.93, 8.16); P=0.75, I2=0%], venous thrombosis [RR 1.71 (95% CI 0.60, 4.84); P=0.31, I2=15%] and patients who were triple antiphospholipid positive [RR 4.12 (95% CI 0.46, 37.10); P=0.21, I2=58%]. DOACs inhibitors were significantly associated with increased risk of stroke [RR 8.51 (95% CI 2.35, 3.82); P=0.47, I2=0%]. Conclusion: DOACs exhibited increased risk of stroke among patients with APS. In addition, although not significant, the higher RRs among patients on DOACs may indicate higher risk of thrombotic events associated with DOACs.
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High-power, short-duration (HPSD) radiofrequency (RF) ablation is expected to be more effective and safer than low-power, long-duration (LPLD) RF ablation in treating atrial fibrillation (AF). Given the limited data available, the findings are controversial. This meta-analysis evaluated whether the clinical effects of HPSD outweigh those of LPLD. A systematic search of PubMed, Embase, and Google Scholar databases identified studies comparing HPSD to LPLD ablation. All the analyses used the random-effects model. This analysis included 21 studies with a total of 4,169 patients. Pooled analyses revealed that HPSD was associated with a lower recurrence of atrial tachyarrhythmias (ATAs) at 1 year (relative risk [RR], 0.62; 95% confidence interval [CI], 0.50-0.78; P = .00001; I2 = 0%). Furthermore, the HPSD approach reduced the risk of AF recurrence (RR, 0.64; 95% CI, 0.40-1.01; P = .06; I2 = 86%). The HPSD approach was associated with a lower risk of esophageal thermal injury (ETI) (RR, 0.78; 95% CI, 0.58-1.04; P = .09; I2 = 73%). The HPSD strategy increased first-pass pulmonary vein (PV) isolation (PVI) and decreased acute PV reconnection (PVR), both of which were predominantly manifested in bilateral and left PVs. HPSD facilitated a reduction in procedural time, number of lesions created during PVI, and fluoroscopy time. The HPSD method reduces ETI, PVR, and recurrent AF. The HPSD approach also reduced the procedural time, number of lesions created during PVI, fluoroscopy time, and post-ablation AF relapse in 1 year, improving patient outcomes and safety.
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[This corrects the article DOI: 10.3389/fneur.2022.1005406.].
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BACKGROUND: In Singapore, research teams seek informed patient consent on an ad hoc basis for specific clinical studies and there is typically a role separation between operational and research staff. With the enactment of the Human Biomedical Research Act, there is increased emphasis on compliance with consent-taking processes and research documentation. To optimize resource use and facilitate long-term research sustainability at our institution, this study aimed to design and pilot an institution level informed consent workflow (the "intervention") that is integrated with clinic operations. METHODS: We used the Consolidated Framework for Implementation Research (CFIR) as the underpinning theoretical framework and conducted the study in three stages: Stage 1, CFIR constructs were used to systematically identify barriers and facilitators of intervention implementation, and a simple time-and-motion study of the patient journey was used to inform the design of the intervention; Stage 2, implementation strategies were selected and mapped to the Expert Recommendations for Implementing Change (ERIC) taxonomy; Stage 3, we piloted and adapted the implementation process at two outpatient clinics and evaluated implementation effectiveness through patient participation rates. RESULTS: We identified 15 relevant CFIR constructs. Implementation strategies selected to address these constructs were targeted at three groups of stakeholders: institution leadership (develop relationships, involve executive boards, identify and prepare champions), clinic management team (develop relationships, identify and prepare champions, obtain support and commitment, educate stakeholders), and clinic operations staff (develop relationships, assess readiness, conduct training, cyclical tests of change, model and simulate change, capture and share local knowledge, obtain and use feedback). Time-and-motion study in clinics identified the pre-consultation timepoint as the most appropriate for the intervention. The implementation process was adapted according to clinic operations staff and service needs. At the conclusion of the pilot, 78.3% of eligible patients provided institution level informed consent via the integrated workflow implemented. CONCLUSIONS: Our findings support the feasibility of implementing an institution level informed consent workflow that integrates with service operations at the outpatient setting to optimize healthcare resources for research. The CFIR provided a useful framework to identify barriers and facilitators in the design of the intervention and its implementation process.
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Objetivo: La prevención de las lesiones por presión (LPP) adquiridas en el hospital en pacientes críticos sigue siendo un reto clínico importante debido a su alto riesgo de comorbilidad asociada. Se evaluó la eficacia preventiva de los apósitos de silicona en los pacientes ingresados en las unidades de cuidados intensivos y en entornos no relacionados con dichas unidades. Métodos: Se realizó una búsqueda bibliográfica en 3bases de datos electrónicas (MEDLINE, EMBASE, Cochrane Central) desde el inicio hasta diciembre de 2021. Se incluyeron los estudios que evaluaban la eficacia de los apósitos de silicona en la incidencia de LPP en la zona sacra. Las evaluaciones se informaron como ratios de riesgo relativo (RR) con intervalos de confianza al 95% y el análisis se hizo mediante un modelo de efectos aleatorios. Resultados: De los 1.056 artículos recuperados en la búsqueda inicial, se incluyeron 11estudios en el análisis final. Los apósitos de silicona redujeron significativamente la incidencia de LPP en comparación con la atención habitual (RR: 0,30; IC 95%: 0,19-0,45; p<0,01). No se encontraron diferencias significativas entre los resultados de los estudios en contextos de cuidados intensivos (RR=0,25; IC 95%: 0,15-0,43; p<0,01) y en contextos de cuidados no intensivos (RR=0,38; IC 95%: 0,17-0,83; p=0,01) (interacción de p: 0,39). Los apósitos de silicona redujeron el riesgo de desarrollar LPP entre los pacientes que utilizaron el apósito de espuma de 5capas Border (Mepilex® Sacrum) (RR: 0,31; IC 95%: 0,20-0,48; p<0,01) y el apósito Allevyn Gentle Border® (RR: 0,10; IC 95%: 0,01-0,73; p=0,02) sin diferencias significativas tras el análisis de subgrupos (interacción de p: 0,27). Conclusión: El presente metaanálisis señala que los apósitos de silicona reducen de forma consistente la incidencia de las LPP en entornos de cuidados intensivos y no intensivos, independientemente del tipo de apósito utilizado.(AU)
Objective: Preventing hospital-acquired pressure injuries (PI) in critically ill patients remains a significant clinical challenge because of its associated high risk for comorbid conditions. We assessed the preventive effectiveness of silicone dressings among patients admitted in intensive care units and non-intensive care units settings. Methods:A literature search was conducted across 3electronic databases (MEDLINE, EMBASE, Cochrane Central) from inception through December 2021. Studies assessing the effectiveness of silicone dressing on the incidence of PI on the sacral area were included. evaluations were reported as risk ratios (RRs) with 95% confidence interval, and analysis was performed using a random-effects model. Results: Of the 1,056 articles retrieved from the initial search, 11studies were included in the final analysis. Silicone dressings significantly reduced the incidence of PI compared to usual care (RR: 0.30, 95%CI: 0.19-0.45, P<0.01). We found no significant difference between results of studies conducted in intensive care settings (RR=0.25, 95%CI: 0.15-0.43, P<0.01) and non-intensive care settings (RR=0.38, 95%CI: 0.17-0.83, P=0.01) (P-interaction: 0.39). Silicone dressings reduced the risk of developing PI among patients using five-layer foam Border dressing (Mepilex® Sacrum) (RR: 0.31, 95%CI: 0.20-0.48, P<0.01), and dressing Allevyn Gentle Border® (RR: 0.10, 95%CI: 0.01-0.73, P=0.02) with no significant difference upon subgroup analysis (P-interaction: 0.27). Conclusion: The present meta-analysis suggests that silicone dressings consistently reduce the incidence of PI in intensive as well as in non-intensive care settings, regardless of the type of dressing used.(AU)
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Humanos , Heridas y Lesiones , Enfermería de Cuidados Críticos , Vendajes , Siliconas , Unidades de Cuidados Intensivos , Enfermería , EspañaRESUMEN
OBJECTIVE: Preventing hospital-acquired pressure injuries (PI) in critically ill patients remains a significant clinical challenge because of its associated high risk for comorbid conditions. We assessed the preventive effectiveness of silicone dressings among patients admitted in intensive care units and non-intensive care units settings. METHODS: A literature search was conducted across 3 electronic databases (MEDLINE, EMBASE, Cochrane Central) from inception through December 2021. Studies assessing the effectiveness of silicone dressing on the incidence of PI on the sacral area were included. Evaluations were reported as risk ratios (RRs) with 95% confidence interval, and analysis was performed using a random-effects model. RESULTS: Of the 1056 articles retrieved from the initial search, 11 studies were included in the final analysis. Silicone dressings significantly reduced the incidence of PI compared to usual care (RR: 0.30, 95% CI: 0.19-0.45, P<0.01). We found no significant difference between results of studies conducted in intensive care settings (RR=0.25, 95% CI: 0.15-0.43, P<0.01) and non-intensive care settings (RR=0.38, 95% CI: 0.17-0.83, P=0.01) (P-interaction: 0.39). Silicone dressings reduced the risk of developing PI among patients using five-layer foam Border dressing (Mepilex® Sacrum) (RR: 0.31, 95% CI: 0.20-0.48, P<0.01), and dressing Allevyn Gentle Border® (RR: 0.10, 95% CI: 0.01-0.73, P=0.02) with no significant difference upon subgroup analysis (P-interaction: 0.27). CONCLUSION: The present meta-analysis suggests that silicone dressings consistently reduce the incidence of PI in intensive as well as in non-intensive care settings, regardless of the type of dressing used.
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Úlcera por Presión , Siliconas , Humanos , Vendajes , Unidades de Cuidados Intensivos , Úlcera por Presión/prevención & control , Úlcera por Presión/epidemiología , HospitalizaciónRESUMEN
Aim: This study aims to assess the integrity of white matter in various segments of the corpus callosum in Alzheimer's disease (AD) by using metrics derived from diffusion tensor imaging (DTI), diffusion kurtosis imaging (DKI) and white matter tract integrity model (WMTI) and compare these findings to healthy controls (HC). Methods: The study was approved by the institutional ethics board. 12 AD patients and 12 HC formed the study population. All AD patients were recruited from a tertiary neurology memory clinic. A standardized battery of neuropsychological assessments was administered to the study participants by a trained rater. MRI scans were performed with a Philips Ingenia 3.0T scanner equipped with a 32-channel head coil. The protocol included a T1-weighted sequence, FLAIR and a dMRI acquisition. The dMRI scan included a total of 71 volumes, 8 at b = 0 s/mm2, 15 at b = 1,000 s/mm2 and 48 at b = 2,000 s/mm2. Diffusion data fit was performed using DKI REKINDLE and WMTI models. Results and discussion: We detected changes suggesting demyelination and axonal degeneration throughout the corpus callosum of patients with AD, most prominent in the mid-anterior and mid-posterior segments of CC. Axial kurtosis was the most significantly altered metric, being reduced in AD patients in almost all segments of corpus callosum. Reduced axial kurtosis in the CC segments correlated with poor cognition scores in AD patients in the visuospatial, language and attention domains.
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Tumor-associated collagen signature-3 (TACS-3) is a prognostic indicator for breast cancer survival. It is characterized by highly organized, parallel bundles of collagen fibers oriented perpendicular to the tumor boundary, serving as directional, confining channels for cancer cell invasion. Here we design a TACS-3-mimetic anisotropic, confined collagen I matrix and examine the relation between anisotropy of matrix, directed cellular migration, and anisotropy of cell membrane-the first direct contact between TACS-3 and cell-using Michigan Cancer Foundation-7 (MCF-7) cells as cancer-model. Using unidirectional freezing, we generated â¼50µm-wide channels filled with collagen I. Optical tweezer (OT) microrheology shows that anisotropic confinement increases collagen viscoelasticity by two orders of magnitude, and the elastic modulus is significantly greater along the direction of anisotropic confinement compared to that along the orthogonal direction, thus establishing matrix anisotropy. Furthermore, MCF-7 cells embedded in anisotropic collagen I, exhibit directionality in cellular morphology and migration. Finally, using customized OT to trap polystyrene probes bound to cell-membrane (and not to ECM) of either free cells or cells under anisotropic confinement, we quantified the effect of matrix anisotropy on membrane viscoelasticity, both in-plane and out-of-plane, vis-à-vis the membrane. Both bulk and viscous modulus of cell-membrane of MCF-7 cells exhibit significant anisotropy under anisotropic confinement. Moreover, the cell membrane of MCF-7 cells under anisotropic confinement is significantly softer (both in-plane and out-of-plane moduli) despite their local environment being five times stiffer than free cells. In order to test if the coupling between anisotropy of extracellular matrix and anisotropy of cell-membrane is regulated by cell-cytoskeleton, actin cytoskeleton was depolymerized for both free and confined cells. Results show that cell membrane viscoelasticity of confined MCF-7 cells is unaffected by actin de-polymerization, in contrast to free cells. Together, these findings suggest that anisotropy of ECM induces directed migration and correlates with anisotropy of cell-membrane viscoelasticity of the MCF-7 cells in an actin-independent manner.
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Actinas , Colágeno , Humanos , Anisotropía , Células MCF-7 , Membrana CelularRESUMEN
Background and objectives: Methotrexate (MTX) is globally used by physicians to treat patients with Rheumatoid Arthritis (RA). Previously conducted researches indicate prevalent side effects associated with conventional once-weekly dosage amongst a population sample of patients consuming MTX. The objectives of our study were to find out whether there is a difference between the two studied regimens in efficacy and adverse effects of methotrexate. Materials and methods: Study participants were recruited from the outpatient rheumatology department after ethical approval and informed patient consent. Disease activity was assessed at baseline with various reliable and validated scales (SDAI, PAS, DAS-28 among others) after the propensity score-matched 1:1 among the two groups. One group continued their once-weekly regimen (group A), while the other group had their dosage of oral MTX split into alternate days per week (group B). The propensity-matched groups of 123 patients each were included in the final analysis. Results: The most frequently reported side effect was decreased appetite, followed by gastritis, nausea, headache, and vomiting. Within the two groups, no significant differences were found in disease activity scales. The only considerable difference was mean corpuscular volume (MCV) being higher in Group A (p = 0.0128). Comparison of side effect profile at 6 months after intervention showed improved gastritis (63.4 vs 41.5%), nausea (51.2% vs 35.8%), appetite (74.0% vs 60.2%) and hepatotoxicity (14.6% vs 5.7%) in Group B. Conclusion: An alternate-day regimen may prove more beneficial to the patient's compliance due to fewer side effects and similar efficacy to the conventional dosage.
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The coronavirus can infect the upper respiratory tract, sinuses, and nose, and its severity manifests in its respiratory symptoms and neurological and psychological consequences. The majority of people who have COVID-19 present with moderate flu-like illness, and patients who are elderly with comorbid conditions, such as hypertension and diabetes, are more prone to experience severe illness and death. However, in the ongoing COVID-19 pandemic, neurological consequences have become a substantial source of morbidity and mortality. COVID-19 poses a global hazard to the nervous system because of its widespread dispersion and multiple pathogenic pathways. This review offers a critical assessment of the acute and long-term neurological effects of the COVID-19 virus. Some neurological problems include headache, dizziness, myalgia/fatigue, meningitis, ischemic/hemorrhagic stroke, and myelitis. Other people who have contracted COVID-19 also exhibit neurological features such as loss of taste and smell, reduced consciousness, and Guillain-Barré syndrome. This study seeks to help neurologists comprehend the wide range of neurologic aspects of COVID-19, as understanding neurological symptoms may help with the management and enhance the patient's outcomes.
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Optical tweezers have revolutionised micromanipulation from physics and biology to material science. However, the high laser power involved in optical trapping can damage biological samples. In this context, indirect trapping of microparticles and objects using fluid flow fields has assumed great importance. It has recently been shown that cells and particles can be turned in the pitch sense by opto-plasmonic heating of a gold surface constituting one side of a sample chamber. We extend that work to place two such hotspots in close proximity to each other to form a very unique configuration of flow fields forming an effective quasi-three-dimensional 'trap', assisted by thermophoresis. This is effectively a harmonic trap confining particles in all three dimensions without relying on other factors to confine the particles close to the surface. We use this to show indirect trapping of different types of upconverting particles and cells, and also show that we can approach a trap stiffness of 40 fN µm-1 indicating a weak confinement regime without relying on feedback.
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Objective: Normal pressure hydrocephalus (NPH) is a neurological condition characterized by a clinical triad of gait disturbance, cognitive impairment, and urinary incontinence in conjunction with ventriculomegaly. Other neurodegenerative diseases, such as Alzheimer's disease, Parkinson's disease, and vascular dementia share some overlapping clinical features. However, there is evidence that patients with comorbid NPH and Alzheimer's or Parkinson's disease may still exhibit good clinical response after CSF diversion. This study aims to evaluate clinical responses after ventriculo-peritoneal shunt (VPS) in a cohort of patients with coexisting NPH and neurodegenerative disease. Methods: The study has two components; (i) a pilot study was performed that specifically focused upon patients with Complex NPH and following the inclusion of the Complex NPH subtype into consideration for the clinical NPH programme, (ii) a retrospective snapshot study was performed to confirm and characterize differences between Classic and Complex NPH patients being seen consecutively over the course of 1 year within a working subspecialist NPH clinic. We studied the characteristics of patients with Complex NPH, utilizing clinical risk stratification and multimodal biomarkers. Results: There was no significant difference between responders and non-responders to CSF diversion on comorbidity scales. After VPS insertion, significantly more Classic NPH patients had improved cognition compared to Complex NPH patients (p = 0.005). Improvement in gait and urinary symptoms did not differ between the groups. 26% of the Classic NPH group showed global improvement of the triad, and 42% improved in two domains. Although only 8% showed global improvement of the triad, all Complex NPH patients improved in gait. Conclusions: Our study has demonstrated that the presence of neurodegenerative disorders co-existing with NPH should not be the sole barrier to the consideration of high-volume tap test or lumbar drainage via a specialist NPH programme. Further characterization of distinct cohorts of NPH with differing degrees of CSF responsiveness due to overlay from neurodegenerative or comorbidity risk burden may aid toward more precise prognostication and treatment strategies. We propose a simplistic conceptual framework to describe NPH by its Classic vs. Complex subtypes to promote the clinical paradigm shift toward subspecialist geriatric neurosurgery by addressing needs for rapid screening tools at the clinical-research interface.