Electroencephalography (EEG) experiments typically generate vast amounts of data due to the high sampling rates and the use of multiple electrodes to capture brain activity. Consequently, storing and transmitting these large datasets is challenging, necessitating the creation of specialized compression techniques tailored to this data type. This study proposes one such method, which at its core uses an artificial neural network (specifically a convolutional autoencoder) to learn the latent representations of modelled EEG signals to perform lossy compression, which gets further improved with lossless corrections based on the user-defined threshold for the maximum tolerable amplitude loss, resulting in a flexible near-lossless compression scheme. To test the viability of our approach, a case study was performed on the 256-channel binocular rivalry dataset, which also describes mostly data-specific statistical analyses and preprocessing steps. Compression results, evaluation metrics, and comparisons with baseline general compression methods suggest that the proposed method can achieve substantial compression results and speed, making it one of the potential research topics for follow-up studies.

• MeSH
• dospělí MeSH
• elektroencefalografie * metody   MeSH
• komprese dat * metody   MeSH
• lidé MeSH
• neuronové sítě * MeSH
• počítačové zpracování signálu MeSH
• Check Tag
• dospělí MeSH
• lidé MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH

OBJECTIVES: Our objective was to assess morbidity trends in Europe and to classify European countries based on population ageing theories: the compression, expansion and dynamic equilibrium of morbidity. METHODS: The proportions of healthy life years were calculated for 31 European countries for the period 2005-2019 based on life expectancy values and healthy life years at age 65 years adopted from the Eurostat database. European countries were classified according to morbidity patterns applying the standard deviation distance from the average of relative change method between the selected years. RESULTS: A large degree of variation in terms of life expectancy and healthy life years at age 65 years was determined between 2005 and 2019. While the life expectancy differences between men and women were consistent across all the European countries, the gender gap concerning healthy life years was more diverse. Approximately one-third of the countries fell into the expansion, compression and dynamic equilibrium categories, respectively. CONCLUSION: Significant variations were identified in healthy life year trends across European countries, which underscores the need for preventive strategies.

• MeSH
• lidé středního věku MeSH
• lidé MeSH
• morbidita trendy   MeSH
• naděje dožití * trendy   MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• Check Tag
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• Geografické názvy
• Evropa MeSH

Since its early days in the 19th century, medicinal chemistry has concentrated its efforts on the treatment of diseases, using tools from areas such as chemistry, pharmacology, and molecular biology. The understanding of biological mechanisms and signaling pathways is crucial information for the development of potential agents for the treatment of diseases mainly because they are such complex processes. Given the limitations that the experimental approach presents, computational chemistry is a valuable alternative for the study of these systems and their behavior. Thus, classical molecular dynamics, based on Newton's laws, is considered a technique of great accuracy, when appropriated force fields are used, and provides satisfactory contributions to the scientific community. However, as many configurations are generated in a large MD simulation, methods such as Statistical Inefficiency and Optimal Wavelet Signal Compression Algorithm are great tools that can reduce the number of subsequent QM calculations. Accordingly, this review aims to briefly discuss the importance and relevance of medicinal chemistry allied to computational chemistry as well as to present a case study where, through a molecular dynamics simulation of AMPK protein (50 ns) and explicit solvent (TIP3P model), a minimum number of snapshots necessary to describe the oscillation profile of the protein behavior was proposed. For this purpose, the RMSD calculation, together with the sophisticated OWSCA method was used to propose the minimum number of snapshots.

• MeSH
• algoritmy MeSH
• farmaceutická chemie MeSH
• kvantová teorie MeSH
• lidé MeSH
• proteinkinasy aktivované AMP metabolismus   chemie   MeSH
• simulace molekulární dynamiky * MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• přehledy MeSH

• Klíčová slova
• Chirurgie, ortopedie, traumatologie,
• MeSH
• neurochirurgie MeSH

• NLK Obory
• neurochirurgie

Srdeční infarkt je závažný stav definovaný jako nekróza části srdečních buněk (kardiomyocytů) s klinickými známkami akutní ischemie myokardu. Většinou je charakterizován rupturou aterosklerotického plátu, ulcerací, fisurou nebo erozí s výsledným intraluminálním trombem v jedné nebo více koronárních tepnách. Srdeční infarkt bývá spojován s vyšším věkem a u mladých pacientů se na tuto diagnózu často nemyslí. Cílem sdělení je poukázat na výskyt akutního infarktu myokardu (AIM) u mladých jedinců. Rádi bychom demonstrovali závažnost problematiky diagnostiky AIM u mladých nemocných na kazuistice muže věku 36 let s pozitivní rodinnou anamnézou. Na naše pracoviště byl přivezen za kontinuální resuscitace zevním masážním systémem Lucas pro refrakterní srdeční zástavu s obrazem bezpulzové aktivity. Resuscitace byla nakonec úspěšná, k obnově spontánního oběhu došlo v 85. minutě. Následně byl na EKG obraz infarktu myokardu s ST elevacemi přední stěny. Akutní koronarografie potvrdila proximální uzávěr ramus interventricularis anterior, byla provedena balónková angioplastika s implantací stentu. Tento mladý muž opustil naše oddělení po 21 dnech s malým neurologickým deficitem (porucha krátkodobé paměti). Prevalence srdečního infarktu stoupá s věkem, ale může se vyvinout a ohrožovat život i u mladých jedinců. Proto je třeba na tuto diagnózu myslet také u mladších pacientů s námahovými bolestmi na hrudi nebo v zádech

A heart attack is a serious condition, defined as the death of a portion of cardiac muscle cells. It is typically caused by a sudden blockage or significant narrowing of a coronary artery that supplies the affected region. Although heart attacks are often associated with older individuals, they can also occur in the young. The aim of this paper is to shed light on the incidence of acute myocardial infarction (AMI) in younger populations. Through the case study of a 36year-old male with a familial history of heart conditions, we aim to highlight the critical nature of early AMI diagnosis in young individuals. He was admitted to our department while undergoing continuous resuscitation using the Lucas external chest compression system, following a refractory cardiac arrest characterized by pulseless electrical activity. Resuscitation proved successful, with spontaneous circulation restored after 85 minutes. A subsequent ECG revealed an ST elevation myocardial infarction of the anterior wall. Acute coronary angiography identified a proximal blockage in the ramus interventricularis anterior, which was then treated with balloon angioplasty and stent implantation. Twenty-one days later, the young patient was discharged with a mild impairment in short-term memory. While the prevalence of myocardial infarction increases with age, it is imperative to recognize that younger individuals are not immune. Therefore, healthcare professionals must consider AMI as a potential diagnosis in younger patients presenting with exertional chest or back pain.

• MeSH
• infarkt myokardu ošetřování   terapie   MeSH
• mladý dospělý MeSH
• Check Tag
• mladý dospělý MeSH
• Publikační typ
• kazuistiky MeSH

BACKGROUND: Advanced Life Support (ALS) during cardiopulmonary resuscitation (CPR) for out-of-hospital cardiac arrest (OHCA) is frequently administered by two-member crews. However, ALS CPR is mostly designed for larger crews, and the feasibility and efficacy of implementing ALS guidelines for only two rescuers remain unclear. OBJECTIVE: This scoping review aims to examine the existing evidence and identify knowledge gaps in the efficiency of pre-hospital ALS CPR performed by two-member teams. DESIGN: A comprehensive search was undertaken across the following databases: PubMed, Web of Science, SCOPUS, Cochrane Library Trials, and ClinicalTrials.gov. The search covered publications in English or German from January 1, 2005, to November 30, 2023. The review included studies that focused on ALS CPR procedures carried out by two-member teams in adult patients in either simulated or clinical settings. RESULTS: A total of 22 articles were included in the qualitative synthesis. Seven topics in two-person prehospital ALS/CPR delivery were identified: 1) effect of team configuration on clinical outcome and CPR quality, 2) early airway management and ventilation techniques, 3) mechanical chest compressions, 4) prefilled syringes, 5) additional equipment, 6) adaptation of recommended ALS/CPR protocols, and 7) human factors. CONCLUSION: There is a lack of comprehensive data regarding the adaptation of the recommended ALS algorithm in CPR for two-member crews. Although simulation studies indicate potential benefits arising from the employment of mechanical chest compression devices, prefilled syringes, and automation-assisted protocols, the current evidence is too limited to support specific modifications to existing guidelines.

• Publikační typ
• časopisecké články MeSH
• přehledy MeSH

INTRODUCTION: This simulation-based study aimed to evaluate the efficacy of ventilation during paediatric cardiopulmonary resuscitation (CPR) provided by healthcare professionals (HCPs) and lay rescuers (LRs). The objective was to assess the number of effective breaths delivered during the initial sequence of CPR. Effective ventilation plays a critical role during paediatric CPR as most cardiac arrests are secondary to hypoxia in origin. The recommendations on initial resuscitation in unresponsive, non-breathing children differ worldwide. The European Resuscitation Council (ERC) guidelines recommend five breaths before starting the chest compressions. Yet, this recommendation was based on the expert consensus historically and has not changed since 2000 because of the lack of evidence. This research addresses the identified knowledge gap, with potential implications for improving resuscitation practices and ultimately enhancing patient outcomes. METHODS: HCPs and LRs performed 90 s of CPR involving two mannequins: 5-kg Baby and 20-kg Junior. Both groups (HCPs and LRs) performed the task before and after structured CPR training, and the efficacy of ventilation before and after the training was compared. The HCPs provided bag-mask ventilation; LR performed dispatcher-assisted CPR with mouth-to-mouth ventilation. RESULTS: The number of participants that reached the primary outcome before and after the training in Baby was 26 (65%) vs. 40 (100%) in HCPs and 28 (60.9%) vs. 45 (97.8%) in LRs (improvement in both p < 0.001), respectively. The number of participants that reached the primary outcome before and after the training in the Junior mannequin was 31 (77.5%) vs. 32 (82.1%) in HCPs (p = 0.77) and 32 (82.1%) vs. 37 (94.9%) in LRs (p = 0.005), respectively. DISCUSSION: This simulation-based study is the first to investigate ventilation efficacy during paediatric CPR provided by HCPs and LRs. Ventilation represents an important aspect of good-quality CPR in children. The concept of initiating paediatric CPR with initial breaths, as stated in ERC guidelines 2021, is justifiable. Trained HCPs and LRs providing dispatcher-assisted CPR could deliver effective ventilation to paediatric mannequins. These findings can contribute to future research in this area and address identified knowledge gaps concerning resuscitation guidelines, given the unique practical application of simulation as a research tool.

• Publikační typ
• časopisecké články MeSH

Srdeční infarkt je závažný stav definovaný jako nekróza části srdečních buněk (kardiomyocytů) s klinickými známkami akutní ischemie myokardu. Většinou je charakterizován rupturou aterosklerotického plátu, ulcerací, fisurou nebo erozí s výsledným intraluminálním trombem v jedné nebo více koronárních tepnách. Srdeční infarkt bývá spojován s vyšším věkem a u mladých pacientů se na tuto diagnózu často nemyslí. Cílem sdělení je poukázat na výskyt akutního infarktu myokardu (AIM) u mladých jedinců. Rádi bychom demonstrovali závažnost problematiky diagnostiky AIM u mladých nemocných na kazuistice muže věku 36 let s pozitivní rodinnou anamnézou. Na naše pracoviště byl přivezen za kontinuální resuscitace zevním masážním systémem Lucas pro refrakterní srdeční zástavu s obrazem bezpulzové aktivity. Resuscitace byla nakonec úspěšná, k obnově spontánního oběhu došlo v 85. minutě. Následně byl na EKG obraz infarktu myokardu s ST elevacemi přední stěny. Akutní koronarografie potvrdila proximální uzávěr ramus interventricularis anterior, byla provedena balónková angioplastika s implantací stentu. Tento mladý muž opustil naše oddělení po 21 dnech s malým neurologickým deficitem (porucha krátkodobé paměti). Prevalence srdečního infarktu stoupá s věkem, ale může se vyvinout a ohrožovat život i u mladých jedinců. Proto je třeba na tuto diagnózu myslet také u mladších pacientů s námahovými bolestmi na hrudi nebo v zádech.

A heart attack is a serious condition, defined as the death of a portion of cardiac muscle cells. It is typically caused by a sudden blockage or significant narrowing of a coronary artery that supplies the affected region. Although heart attacks are often associated with older individuals, they can also occur in the young. The aim of this paper is to shed light on the incidence of acute myocardial infarction (AMI) in younger populations. Through the case study of a 36year-old male with a familial history of heart conditions, we aim to highlight the critical nature of early AMI diagnosis in young individuals. He was admitted to our department while undergoing continuous resuscitation using the Lucas external chest compression system, following a refractory cardiac arrest characterized by pulseless electrical activity. Resuscitation proved successful, with spontaneous circulation restored after 85 minutes. A subsequent ECG revealed an ST elevation myocardial infarction of the anterior wall. Acute coronary angiography identified a proximal blockage in the ramus interventricularis anterior, which was then treated with balloon angioplasty and stent implantation. Twenty-one days later, the young patient was discharged with a mild impairment in short-term memory. While the prevalence of myocardial infarction increases with age, it is imperative to recognize that younger individuals are not immune. Therefore, healthcare professionals must consider AMI as a potential diagnosis in younger patients presenting with exertional chest or back pain.

• MeSH
• balónková koronární angioplastika MeSH
• dospělí MeSH
• echokardiografie MeSH
• infarkt myokardu přední stěny diagnóza   terapie   MeSH
• infarkt myokardu s elevacemi ST úseků diagnóza   terapie   MeSH
• infarkt myokardu * diagnóza   terapie   MeSH
• lidé MeSH
• mozková hypoxie a ischemie MeSH
• rehabilitace MeSH
• Check Tag
• dospělí MeSH
• lidé MeSH
• mužské pohlaví MeSH
• Publikační typ
• kazuistiky MeSH

Degenerative cervical myelopathy (DCM) represents the final consequence of a series of degenerative changes in the cervical spine, resulting in cervical spinal canal stenosis and mechanical stress on the cervical spinal cord. This process leads to subsequent pathophysiological processes in the spinal cord tissues. The primary mechanism of injury is degenerative compression of the cervical spinal cord, detectable by magnetic resonance imaging (MRI), serving as a hallmark for diagnosing DCM. However, the relative resilience of the cervical spinal cord to mechanical compression leads to clinical-radiological discordance, i.e., some individuals may exhibit MRI findings of DCC without the clinical signs and symptoms of myelopathy. This degenerative compression of the cervical spinal cord without clinical signs of myelopathy, potentially serving as a precursor to the development of DCM, remains a somewhat controversial topic. In this review article, we elaborate on and provide commentary on the terminology, epidemiology, natural course, diagnosis, predictive value, risks, and practical management of this condition-all of which are subjects of ongoing debate.

• Publikační typ
• časopisecké články MeSH
• přehledy MeSH

Background: Percutaneous vertebroplasty (PVP) and kyphoplasty (PKP) are established methods in the treatment of vertebral compression fractures (VCFs). In our manuscript, the target was to evaluate the efficacy of PVPs/PKPs and to determine the implications of potential periprocedural complications. Methods: 280 patients, specifically 194 women (69.3%) and 86 men (30.7%), were enrolled. We used the AO spine fractures classification and the Yeom classification to determine the subtype of cement leakage. Only single-level VCFs of the thoracic or lumbar spine were included. Visual analogue scale (VAS) was assessed preoperatively and regularly after the surgery. Vertebral compression ratio (VBCR) was used to determine postoperative vertebral body collapse. Results: We recorded 54 cases (19.3%) of cement leakage. There was a significant decrease in mean VAS scores (6.82-0.76 in PVPs, 7.15-0.81 in PKPs). The decrease in VBCR was greater in the VP group (4.39%; 84.21-79.82) compared to the KP group (1.95%; 74.36-72.41). Conclusions: No significant difference in the risk of cement leakage when comparing KPs and VPs was found. VPs and KPs provide rapid and significant pain relief in patients with VCFs. Clinically relevant complications of VPs and KPs are rare. Kyphoplasties prevent further vertebral body collapse more effectively compared to vertebroplasties.

• Publikační typ
• časopisecké články MeSH