Search Results (105)

Excitotoxicity is one of the factors that participates in neurodegeneration, impairing neuronal and glial cells’ function, and leading to the development of chronic neurodegenerative diseases. The main mechanism of action lies in the overstimulation of excitatory receptors, especially the NMDA (N-methyl-D-aspartic acid) receptor, by glutamate, which promotes a massive influx of Ca²⁺ that is not sufficiently buffered by the intracellular machinery, or not released by mechanisms such as Ca²⁺ ATPase and plasma membrane Ca²⁺/Na⁺ exchanger promoting, among other toxic effects, mitochondrial damage and an increase in reactive oxygen species (ROS). Notably, many cases reported of long COVID-19 describe significant brain alterations and neuropsychiatric disorders, including delirium, depression, etc., and patients required increased use of antidepressant or anxiolytic drugs, for example. In addition, emerging evidence links neurodegeneration as a potential long-term sequelae associated with an increased number of patients with cognitive disorders. This review analyzes data from the literature regarding brain alterations associated with post-COVID-19 syndrome and explores a potential link to the excitotoxicity pathways, due to its participation in neurodegeneration by homeostatic failure, and it is clearly present in various brain conditions, such as Alzheimer’s and Parkinson’s diseases. Full article

Background/Objectives: Intraoperative methadone has emerged as a significant pharmacological strategy in cardiac surgery to improve postoperative analgesic outcomes and reduce the reliance on rescue short-action opioids. This review aims to synthesize evidence regarding the safety and efficacy of intravenous methadone compared to other strategies for postoperative pain control in adult and pediatric cardiac surgeries. Methods: This narrative review relied on electronic searches in PubMed, Web of Science, Cochrane Library, and EMBASE up to January 2026. From 199 articles retrieved, 41 were included, focusing on analgesic efficacy, safety, pharmacokinetic variations during cardiopulmonary bypass (CPB), and cost-effectiveness. Results: The implementation of methadone results in up to 70% reduction in postoperative opioid requirements. Patients experience significantly lower pain scores from 24 to 72 h and improvement in satisfaction regarding pain management. In pediatric populations (neonates and children), the use of methadone leads to a significant reduction in opioid needs and a high rate of extubation in the operating room. Pharmacokinetically, a 48% drop in methadone concentration occurs during CPB due to hemodilution and sequestration. Safety data confirms that intraoperative use does not prolong mechanical ventilation; however, doses exceeding 0.25 mg/kg are linked to an increased incidence of delirium. Economically, methadone can be cost-effective, resulting in savings of up to $6355 per patient. Conclusions: Intraoperative methadone improves postoperative analgesia, opioid consumption, patient satisfaction, and costs after cardiac surgery. Its opioid-sparing effects make it particularly attractive for ERAS protocols, although vigilance against dose-related delirium and QT prolongation remains essential. Further research, especially in pediatrics, is needed to refine dosages and safety protocols. Full article

Background and Objectives: Overt perioperative stroke remains a feared complication of adult cardiac surgery. Diffusion-weighted magnetic resonance imaging (DWI-MRI) has revealed a more prevalent form of cerebral injury, termed silent stroke or silent brain injury (SBI). Covert ischemic lesions occur without focal neurological deficits but are increasingly associated with postoperative delirium, cognitive decline, and elevated long-term cerebrovascular risk. Despite growing recognition, the true burden, mechanisms, and clinical relevance of SBI remain incompletely integrated into perioperative practice. Materials and Methods: We performed a narrative review of the literature published between January 2000 and December 2025, identified through PubMed/MEDLINE and Scopus. Eligible studies included prospective and retrospective cohorts, randomized trials, systematic reviews, and meta-analyses involving adult patients undergoing coronary artery bypass grafting, valve surgery, or minimally invasive cardiac procedures, with or without cardiopulmonary bypass, and reporting MRI-detected ischemic lesions or validated surrogate markers of cerebral injury. Pediatric studies, transcatheter interventions, case reports, and non-English publications were excluded. Sixty studies met the inclusion criteria. Results: Silent stroke occurred more frequently than clinically apparent stroke, with new DWI-MRI lesions detected in approximately 20–60% of patients following cardiac surgery. Lesions were typically small, multifocal, and embolic in distribution, predominantly affecting cortical and watershed regions. Cardiopulmonary bypass-related factors, including aortic manipulation, cerebral microembolization, hemodilution, hypoperfusion, and impaired oxygen delivery, emerged as key contributors. Several studies demonstrated associations between SBI burden and postoperative delirium, early cognitive dysfunction, and functional decline. Perfusion-based neuroprotective strategies showed mechanistic benefit, although no single intervention conclusively prevented SBI. Conclusions: Silent stroke represents the most frequent form of neurological injury in adult cardiac surgery. Evidence suggests that these covert lesions reflect clinically meaningful cerebral injury, with potential short- and long-term consequences. Recognition of silent stroke as a relevant neurological endpoint supports a shift toward multimodal, perfusion-driven neuroprotective strategies and the routine incorporation of MRI-based outcomes in future cardiac surgical research. Full article

Dry electroencephalography (EEG) electrodes enable rapid, gel-free setups, which are crucial for point-of-care diagnostics, but often face challenges with comfort and signal quality—especially in a clinical context. Novel “flower” dry electrodes are a special type of reusable scalp electrodes for dry EEG, featuring a distinct flower-like shape with angled pins in three intertwined layers. While the new electrode design has been validated in an in vivo study on healthy volunteers, we tested its clinical applicability in a proof-of-concept study involving three patients diagnosed with epilepsy and delirium. The recordings were of high diagnostic quality, enabling the reliable identification of pathological patterns, such as generalized spike–wave complexes and intermittent delta activity, with a signal-to-noise ratio comparable to prior reports for sponge-based EEG systems (limited case series). The signal-to-noise ratio (SNR) proved to be sufficiently high for clinical diagnostic purposes, resulting in visually clear and interpretable EEG data that enabled effective assessment of patients’ neurophysiological signals. Consequently, our findings demonstrate that the comfortable flower-electrode design is a viable and effective tool for epilepsy diagnostics, extended recording, and clinical neurophysiology. It represents a significant step towards patient-centered and gel-free EEG technology, specifically in point-of-care and emergency applications, without compromising the diagnostic quality of the recordings. Full article

Background: Managing elderly patients with simultaneous acute cardiovascular and orthopedic emergencies presents a unique challenge. While ST-elevation myocardial infarction (STEMI) requires prompt revascularization and dual antiplatelet therapy (DAPT), pertrochanteric femoral fractures usually necessitate early surgical fixation to reduce morbidity and mortality. However, the combination of these conditions complicates both standard treatment pathways. Case presentation: We present the case of an 86-year-old woman admitted after a low-energy fall, with a radiologically confirmed unstable pertrochanteric fracture of the right femur (AO/OTA 31-A2). Upon routine electrocardiogram, anterior STEMI with new-onset atrial fibrillation was diagnosed. Although asymptomatic from a cardiac perspective, bedside echocardiography revealed a severely reduced left ventricular ejection fraction of 10%. Urgent coronary angiography demonstrated a critical mid-left anterior descending lesion, successfully treated with rotational atherectomy, intravascular lithotripsy, and stent implantation. She was initiated on DAPT (aspirin + clopidogrel) and anticoagulated with low-molecular-weight heparin. Given the extremely high bleeding risk, surgical intervention for the femoral fracture was deemed unsafe. Instead, conservative management with skeletal traction (6 kg) was employed. Despite optimal supportive care and early rehabilitation, the patient experienced a complicated hospital course, including delirium, hematuria, and lower respiratory tract infection. She passed away 52 days post-admission. Conclusions: This case illustrates the complexity of clinical decision-making in geriatric patients with competing acute conditions. Current evidence on how to proceed in patients requiring both antithrombotic therapy and urgent orthopedic surgery is limited. Multidisciplinary teams must carefully weigh the risks and benefits of both surgical and conservative strategies. Further guidelines addressing such scenarios in elderly patients are urgently needed. Full article

Introduction: Postoperative delirium, including emergence agitation, is recognized in the post-anesthesia care unit as a fluctuating disturbance of attention and cognition. The current evidence examined suggests that both anesthetic agents and postoperative pain intensity may influence the risk of delirium. The aim of this review is to discuss the significance of pharmacological agents used during anesthesia and the relationship between the intensity of postoperative pain and the occurrence of postoperative delirium in patients undergoing surgical procedures, regardless of age. Methods: A scoping review was conducted from December 2024 to December 2025. The articles identified in each search were limited to those published between 2015 and 2025. Results: Agents such as dexmedetomidine, remimazolam, and magnesium sulfate were examined in the included trials and were reported to be associated with reducing the incidence and severity of postoperative delirium, particularly in pediatric and elderly patients. Analysis of clinical trial outcomes conducted in pediatric populations undergoing various surgical procedures suggests that dexmedetomidine (administered intranasally and intravenously) and alfentanil were associated with lower incidence and severity of emergence delirium compared to standard care or other agents (e.g., midazolam). Higher doses of dexmedetomidine (2 µg/kg) were reported to be associated with improved postoperative analgesia and reduced agitation, without prolonging recovery time or causing serious adverse effects. Propofol, due to its rapid metabolism, was suggested to contribute to shorter emergence times; however, its impact on cognitive function requires further investigation. Additionally, there remains a lack of agreed-upon and/or validated tools and strategies for pain assessment in patients experiencing delirium. Conclusions: The current evidence examined suggests that the use of intranasal dexmedetomidine at appropriate doses may be associated with reduced postoperative pain and agitation without prolonging recovery time or increasing the risk of serious adverse events. Hydromorphone was reported in the included trials to be associated with better postoperative pain control than sufentanil, whereas remimazolam, although associated with reduced delirium incidence in some trials, did not influence the length of stay in the post-anesthesia care unit. Magnesium sulfate, although not significantly affecting the incidence of delirium, was associated with alleviation of postoperative symptoms such as pain and insomnia in adult patients. Ketamine, while commonly used for analgesic therapy, did not demonstrate a consistent association with delirium prevention and, in some studies, was associated with increased neuropsychiatric events. Further research is required to more precisely define optimal perioperative delirium prevention protocols. Full article

Background: In adults, the forces generated during Boyle–Davis Gag suspension correlate with postoperative pain, but no data are available in pediatrics. This study investigates the force metrics and postoperative opioid consumption, pain, emergence delirium (ED), and hypoactive delirium in children. Methods: Children undergoing elective partial or total adenotonsillectomy or adenoidectomy were enrolled. Intraoperative maximum and average forces, suspension time, total impulse (area under the curve of force vs. time), and postoperative opioid consumption, pain, ED, and hypoactive delirium were assessed. Results: Data from 43 children were analyzed. Force metrics were not associated with postoperative opioid consumption, ED, or hypoactive delirium. Compared to no pain, total impulse decreased with mild (mean difference 2.3 kN·s; 95% CI, 3.8 to 4.2; p = 0.02), moderate (mean difference 2.8 kN·s; 95% CI, 5.4 to 3.9; p = 0.011), and severe pain (mean difference 2.3 kN·s; 95% CI, 7.6 to 3.9; p = 0.005). Suspension time was negatively correlated with pain score (r = −0.32, p = 0.041). Conclusions: The force metrics are low and not associated with opioid consumption, ED, or hypoactive delirium. Suspension correlates weakly with postoperative pain in children. Full article

Remimazolam is an ultra-short-acting benzodiazepine developed according to the “soft drug” concept and characterized by rapid onset, predictable offset, organ-independent metabolism, and the availability of a specific antagonist. Due to these pharmacological features, this drug represents a particularly attractive option for pediatric anesthesia and sedation, a field in which traditional agents are often limited by hemodynamic instability, prolonged recovery, and adverse respiratory effects. This narrative review summarizes and discusses the current evidence regarding the use of remimazolam in pediatric patients, focusing on pharmacokinetics, pharmacodynamics, clinical applications, and safety. Available data indicate that remimazolam provides effective sedation and anesthesia in children across multiple settings, including induction of general anesthesia, non-operating room anesthesia, and intensive care unit sedation. Compared with propofol and midazolam, remimazolam is generally associated with greater hemodynamic stability, rapid recovery, reduced emergence delirium, and a favorable respiratory profile, while maintaining comparable efficacy. Intranasal administration has also shown promise as a premedication strategy for reducing preoperative anxiety, although it may occasionally be associated with pain. Even if remimazolam lacks intrinsic analgesic properties, its use appears to indirectly improve postoperative comfort by attenuating stress responses and emergence agitation. Despite encouraging results, pediatric use of remimazolam remains off-label in many countries, and evidence is still limited by small sample sizes and heterogeneous protocols. Further large-scale randomized controlled trials are needed to define optimal dosing strategies, long-term safety, and their definitive role in pediatric anesthetic and sedative practice. Full article

Background: Hypospadias repair is a pediatric surgical procedure associated with relatively pronounced postoperative pain. However, evidence guiding procedure-specific perioperative analgesic strategies remains limited. Although preoperative intravenous ibuprofen has demonstrated analgesic benefits in other pediatric surgical settings, data specific to pediatric urological surgery are scarce. Methods: In this randomized, double-blind, placebo-controlled trial, 104 children (2–7 years old, American Society of Anesthesiologists [ASA] physical status I–II) scheduled for urethroplasty were randomized to receive either intravenous ibuprofen (10 mg/kg; Group I) or saline (Group C) before anesthesia induction. The primary outcome was the proportion of patients requiring rescue opioid analgesia in the postanesthesia care unit (PACU). Secondary outcomes included postoperative FLACC (Face, Legs, Activity, Cry, Consolability), NRS-11 (the numerical rating scale-11 scale), and PAED (Pediatric Anesthesia Emergence Delirium) scores, repeated rescue analgesia, intraoperative opioid use, the LMA (laryngeal mask airway) removal time, and adverse events. Results: Ninety-three patients completed the study (Group I, n = 47; Group C, n = 46). The proportion of patients requiring rescue analgesia in the PACU was significantly lower in the ibuprofen group than in the control group (12.77% vs. 30.43%, p = 0.038, 95% CI: 0.116, 0.968). Moderate-to-severe pain (FLACC ≥ 4) in the PACU occurred less frequently in the ibuprofen group, whereas incidence of emergence delirium was similar between groups. No significant differences were observed in the pain scores on postoperative days 1 and 2, intraoperative opioid use, the LMA removal time, or adverse events. Conclusions: Pre-induction intravenous ibuprofen reduced early postoperative rescue analgesia requirements without increasing adverse events in children undergoing hypospadias repair. Full article

Point-of-care electroencephalography (POC-EEG) has emerged as a practical tool for the rapid detection of non-convulsive seizures (NCS) and non-convulsive status epilepticus (NCSE) in acute neurological settings where access to conventional EEG is often delayed. This narrative review synthesizes current evidence on the clinical applications, tech-no-logical evolution, and limitations of POC-EEG systems across adult and pediatric populations. Available data suggest that POC-EEG is associated with earlier seizure identification, more timely antiseizure treatment decisions, and reduced dependence on inter-facility transfers in selected healthcare settings. Beyond seizure detection, POC-EEG has shown potential utility in the assessment of acute encephalopathy due to conditions such as stroke, traumatic brain injury, delirium, and post-cardiac arrest states. Recent advances in device portability and artificial intelligence-assisted interpretation have expanded accessibility, enabling use by non-specialist clinicians; however, reduced spatial resolution, artifact susceptibility, and variable performance in focal or low-burden epileptiform activity remain important limitations. Automated detection algorithms show high accuracy for sustained seizure burden but require cautious interpretation and further prospective validation. Ethical and health-system considerations, including equitable access, diagnostic stewardship, and data governance, are increasingly relevant as adoption grows. Overall, POC-EEG represents a promising adjunct to conventional EEG that may improve early diagnostic workflows in acute neurological care, while definitive impacts on long-term outcomes warrant further study. Full article

Background/Objectives: Delirium is frequent and serious in older adults attending the emergency department (ED), but evidence on its pharmacological management in this setting is limited. This study aimed to quantify the pharmacological treatment of delirium in older adults in the ED and examine its association with subsequent hospital admission. Methods: A cross-sectional study was conducted between November 2021 and June 2022 in a Spanish ED. The sample included 153 adults aged 65 years or older with clinician-diagnosed delirium. Clinical, triage, and medication data were obtained from electronic medical records, and associations with hospital admission were analysed using multivariable logistic regression. Results: Ninety-one participants (59.5%) were hospitalised. Antipsychotic, analgesic, and benzodiazepine use was associated with hospitalisation. Absence of an underlying cause was a protective factor. The logistic regression model was significant. Conclusions: By identifying the most frequently administered pharmacological treatments for delirium in older adults in the ED and describing their association with hospitalisation, this study provides key insights into real-world clinical practice patterns in this setting. Full article

Background: This study aims to elucidate the relationship between serum sodium and the risk of sepsis-associated delirium (SAD), with particular emphasis on the critical threshold of 138.4 mmol/L. Methods: The retrospective study utilized data from the MIMIC-IV database. The analysis focused on serum sodium concentrations measured within the first 24 h of ICU admission. The association between sodium levels and the risk of delirium was assessed using restricted cubic spline (RCS) analysis and multivariable logistic regression. Subgroup analyses and propensity score matching (PSM) were used to mitigate potential confounding factors. Results: A total of 7356 septic patients were included, with 1861 (25.3%) developing delirium. RCS analysis revealed a significant non-linear relationship between sodium levels and delirium risk, with a threshold at 138.4 mmol/L. Sodium levels ≤ 138.4 mmol/L were associated with a reduced risk of delirium (OR 0.97, 95% CI: 0.95–0.99, p = 0.041), while levels > 138.4 mmol/L significantly increased the risk of delirium (OR 1.08, 95% CI: 1.06–1.11, p < 0.001). After PSM, hypernatremia was associated with a higher delirium incidence than hyponatremia (55.00% vs. 36.67%, p = 0.044) and remained an independent risk factor for delirium in logistic regression (OR 2.89, 95% CI 1.17–7.18, p = 0.022). Conclusions: This study identified a non-linear, threshold-dependent association between serum sodium and delirium susceptibility in septic patients, with 138.4 mmol/L as a critical tipping point. Hypernatremia emerged as a more potent risk factor for delirium compared to hyponatremia. These findings underscore the importance of sodium management in septic patients and suggest that serum sodium may serve as a potential biomarker for predicting neuropsychiatric outcomes in sepsis. Full article

Background/Objectives: Perioperative neurocognitive disorders (PNDs), including delirium and postoperative cognitive dysfunction, affect 10–50% of elderly surgical patients and are associated with increased morbidity and mortality, as well as substantial healthcare costs. Despite their clinical significance, the underlying mechanisms remain incompletely understood and effective interventions are limited. This narrative review synthesizes current evidence on the pathophysiology, risk factors, and management strategies for PNDs. Methods: We conducted a comprehensive literature review of peer-reviewed publications addressing PND epidemiology, mechanisms, assessment, and interventions. Key databases were searched for studies published through 2025, with emphasis on systematic reviews, meta-analyses, and landmark clinical trials. Results: PND represents a spectrum of cognitive impairments with multifactorial etiology involving neuroinflammation, neurotransmitter imbalances, and blood–brain barrier dysfunction. Advanced age, pre-existing cognitive impairment, and surgical factors constitute major risk domains. Validated assessment tools including the Confusion Assessment Method (CAM) and 4AT enable systematic detection. Multicomponent non-pharmacological interventions demonstrate 30–40% delirium reduction, while pharmacological prevention shows limited efficacy. Emerging evidence links perioperative delirium to accelerated long-term cognitive decline and increased dementia risk. Conclusions: PND represents a significant public health challenge requiring systematic attention in aging surgical populations. Evidence-based multicomponent interventions should be integrated into routine perioperative care pathways. Future research must elucidate mechanistic pathways linking acute delirium to chronic cognitive impairment and develop targeted therapies to preserve cognitive health in surgical populations. Full article

Frailty is a multidomain reduction in physiologic reserve that impacts recovery and can contribute to poor outcomes following trauma beyond what chronological age, comorbidities, or injury severity predicts. In geriatric trauma patients, a large proportion are frail or prefrail on initial encounter in the emergency department, and because there are opportunities for actionable management plans, major trauma guidelines endorse systematic screening integrated into coordinated geriatric trauma care. We reviewed the literature and identified practical instruments used in the acute trauma setting for risk stratification. Additionally, we highlight the feasibility of using these instruments, as some can be completed via patient report, proxy input, or chart review when cognition, language, or caregiver availability limits history-taking. Implementation efforts succeed when shared mental models are leveraged and screening is embedded in the electronic health record system, linked to order sets and trigger-based pathways that offer downstream goal-directed care management, such as early mobility, delirium prevention, nutrition, medication review, and comprehensive geriatric assessment. Additionally, we highlight the importance of initiating early goals-of-care discussions and coordinating care with palliative care services. Resource-limited systems can preserve the same architecture by using nurse-led or allied staff-led screening, tele-geriatric consultation, and virtual interdisciplinary huddles. Lastly, we expand upon opportunities for longitudinal post-discharge follow-up. We describe how targeted initiatives translate research into practice, improve outcomes, and support longitudinal reassessment through in-person and telehealth follow-up visits. Full article

Background: Thoracic endovascular aortic repair (TEVAR) has evolved the management of descending thoracic aortic disease, but neurological complications—particularly spinal cord ischemia (SCI), stroke, and postoperative delirium—remain among the most feared adverse events, adversely affecting survival, quality of life, and functional independence. Objectives: The aim of this study was to provide a contemporary narrative synthesis (2000–2025) of the incidence, mechanisms, risk factors, prevention, and management of neurological complications after TEVAR, emphasizing how current evidence supports individualized and risk-adapted strategies for prevention and management. Methods: A narrative, non-systematic search (PubMed/MEDLINE, Scopus, Cochrane Library; 2000–2025) was conducted using terms related to TEVAR, SCI, cerebrovascular events, delirium, and cognitive dysfunction. Priority was given to large registries, cohort studies, and systematic reviews in adult TEVAR populations. Results: Perioperative stroke occurs in ~2–6% of TEVAR cases, with higher rates in arch/zone 0–2 procedures and when the left subclavian artery (LSA) is covered without revascularization. SCI incidence ranges from ~2–9%, influenced by aortic extent and urgency; Vascular Quality Initiative data report SCI in 3.7% of procedures, with markedly reduced 1-year survival. Major SCI risk factors include extensive thoracic coverage, prior aortic repair, vertebral or hypogastric occlusion, emergency presentation, low perioperative mean arterial pressure, anemia, and chronic kidney disease. Postoperative delirium occurs in ~13% of TEVAR-treated type B dissections and correlates with longer hospitalization and early complications. Emerging nomograms for SCI and delirium enable individualized risk stratification. Conclusions: Neurological complications after TEVAR remain clinically significant. Contemporary evidence supports personalized prevention—selective cerebrospinal fluid (CSF) drainage, LSA revascularization, staging, neuromonitoring, and tailored hemodynamic targets—guided by anatomical complexity, comorbidities, collateral network integrity, and prior aortic history. Further research should refine prediction tools, standardize definitions, and evaluate individualized neuroprotective bundles. Full article