Publications by authors named "Martin Balik"

Background: Dexamethasone 6 mg in patients with severe COVID-19 has been shown to decrease mortality and morbidity. The effects of higher doses of corticosteroid, that would further increase anti-inflammatory effects, are uncertain. The objective of our study was to assess the effect of 20 mg dexamethasone vs.

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Atrial fibrillation (AF) is a common arrhythmia encountered in acute and critical illness and is associated with poor short and long-term outcomes. Given the consequences of developing AF, research into prevention, prediction and treatment of this arrhythmia in the critically ill are of great potential benefit, however, study of AF in critically ill patients faces unique challenges, leading to a sparse evidence base to guide management in this population. Major obstacles to the study of AF in acute and critical illness include absence of a common definition, challenges in designing studies that capture complex etiology and assess causality, lack of a clear outcome set, difficulites in recruitment in acute environments with respect to timing, consent, and workflow, and failure to embed studies into clinical care platforms and capitalize on emerging technologies.

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Background: In refractory cardiac arrest, extracorporeal cardiopulmonary resuscitation may increase the survival chance. However, in cases of unsuccessful treatment, extracorporeal cardiopulmonary resuscitation may additionally provide an important source of organ donors. Therefore, we hypothesized that implementing extracorporeal cardiopulmonary resuscitation service into a high-volume cardiac arrest center's routine would increases organ donors' availability.

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  • * This study aims to identify pre-rewarming predictors of death in these patients by analyzing data from multiple registries, focusing on systolic blood pressure (SBP) and base excess (BE) as key indicators.
  • * The findings suggest that a systolic blood pressure below 90 mmHg is linked to an increased risk of death in hypothermic patients with preserved circulation, particularly among those who developed hypothermia at home.
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  • * This study aimed to explore long-term pulmonary perfusion issues in COVID-19 survivors who experienced severe acute respiratory distress syndrome (ARDS) and were treated with ECMO at a specific institution.
  • * Out of 80 patients who survived ECMO treatment, only 37 were analyzed; while VTE occurred frequently during acute illness, no ongoing pulmonary perfusion abnormalities were found after an average of 14 months post-ECMO.
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  • The use of temporary mechanical circulatory support (tMCS) in patients with cardiogenic shock has grown, primarily guided by observational studies and expert opinions.
  • Imaging plays a crucial role in every stage of patient care, from diagnosis to monitoring and eventual weaning from support.
  • This manuscript presents expert consensus and practical guidelines on the use of imaging in conjunction with tMCS, emphasizing evidence-based practices and current best standards.
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Aims: A recently published trial has shown no differences in outcomes between patients with new-onset supraventricular arrhythmia (SVA) in septic shock treated with either propafenone or amiodarone. However, these outcome data have not been evaluated in relation to the presence or absence of a dilated left atrium (LA).

Methods And Results: Patients with SVA and a left ventricular ejection fraction ≥ 35% were randomized to receive intravenous propafenone (70 mg bolus followed by 400-840 mg/24 h) or amiodarone (300 mg bolus followed by 600-1800 mg/24 h).

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Study Objective: To indicate predictors of witnessed hypothermic cardiac arrest.

Methods: We conducted a retrospective analysis of 182 patients with severe accidental hypothermia (i.e.

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  • Anticoagulation management during veno-venous extracorporeal membrane oxygenation (VV ECMO) is challenging due to a lack of definitive guidelines, leading to significant bleeding complications.
  • A study involving 652 adult patients across 41 centers analyzed anticoagulation practices and bleeding events, finding that unfractionated heparin was the most commonly used anticoagulant and that bleeding occurred in 52.5% of patients.
  • Results showed that higher activated partial thromboplastin time (aPTT) levels were linked to an increased risk of bleeding, suggesting that future research could investigate whether lower aPTT targets might help minimize these complications.
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  • Endomyocardial biopsy (EMB) is important for diagnosing fulminant myocarditis in adults, but its timing and effects on patient outcomes are still being studied.
  • In a study involving 419 patients across 36 centers, those who had an early EMB (within 2 days of ICU admission) showed significantly better survival rates (63%) without needing heart transplants or LVAD compared to those with delayed EMB (40%).
  • The research suggests that early EMB is associated with lower mortality rates and better overall outcomes, supporting its prompt use in ICU patients suspected of having fulminant myocarditis.
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Refractory septic shock is associated with a high risk of death. Circulatory support in the form of veno-arterial extracorporeal membrane oxygenation (VA ECMO) may function as a bridge to recovery, allowing for the treatment of the source of the sepsis. Whilst VA ECMO has been accepted as the means of hemodynamic support for children, in adults, single center observational studies show survival rates of only 70-90% for hypodynamic septic shock.

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Background: The impact of serial imaging on the outcome of ICU patients has not been studied specifically in patients with high illness severity.

Methods: The authors sought a relationship between the numbers of antero-posterior supine chest X-rays (CXR), computed tomography (CT) examinations, and outcome in a cohort of 292 patients with severe COVID-19 ARDS collected over 24 months in a high-volume ECMO center with established ultrasound and echocardiographic diagnostics. Of the patients, 172 (59%) were obese or morbidly obese, and 119 (41%) were treated with ECMO.

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The use of extracorporeal membrane oxygenation (ECMO) has recently increased exponentially. ECMO has become the preferred mode of organ support in refractory respiratory or circulatory failure. The fragile balance of haemostasis physiology is massively altered by the patient's critical condition and specifically the aetiology of the underlying disease.

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  • Acute supraventricular arrhythmias can worsen hemodynamic stability in patients with septic shock, and a study compared the effects of intravenous propafenone and amiodarone on arrhythmias in this population.
  • In a trial with 209 patients, those receiving propafenone had a quicker return to sinus rhythm (3.7 hours) compared to those on amiodarone (7.3 hours), although the overall 24-hour sinus rhythm rates were similar.
  • Propafenone led to fewer cases of arrhythmia recurrence than amiodarone, especially in patients without a dilated left atrium, indicating it may be a more effective option for short-term management.
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  • Amiodarone, but not propafenone, causes significant mitochondrial dysfunction in human cardiomyocytes, leading to reduced ATP production and altered cellular metabolism.
  • * Prolonged exposure to amiodarone downregulates fatty acid oxidation and increases anaerobic glycolysis, while propafenone shows no adverse effects on cellular bioenergetics.
  • * The study indicates that the detrimental impacts of amiodarone on mitochondria are consistent across both human and mouse cardiomyocytes, highlighting potential risks in using this drug at therapeutic doses.
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  • - The study aimed to assess how accurately the collapsibility of the internal jugular vein (IJV) can predict fluid responsiveness in patients who are breathing on their own after heart surgery.
  • - Conducted with 54 patients post-cardiac surgery, results showed that while those who responded to fluid therapy had lower IJV diameters at baseline, the overall ability of IJV collapsibility to predict fluid responsiveness was limited.
  • - The findings concluded that IJV collapsibility is not a reliable predictor for fluid responsiveness in these patients, with a sensitivity of 76.5% and a specificity of only 38.9%.
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  • The document outlines a discussion from the expert panel at the first Point-of-Care Ultrasonography event held in Prague on November 14, 2022.
  • The panel focused on creating standards, improving education, and advancing research related to Point-of-Care ultrasound.
  • As a result of the meeting, the Czech Multidisciplinary Task Force Group was established to address these goals within the field of POCUS.
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  • The study explores the link between various types of right ventricular (RV) involvement and mortality rates in ICU patients suffering from acute respiratory distress syndrome (ARDS) due to COVID-19.
  • Researchers analyzed data from the ECHO-COVID study, using echocardiograms to identify three RV phenotypes: acute cor pulmonale (ACP), RV failure (RVF), and RV dysfunction.
  • Findings revealed that 67% of patients had some form of RV involvement, with ACP being associated with significantly shorter survival times, indicating that different RV conditions have varying impacts on mortality in ICU settings.
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  • The study examines the diverse roles of echocardiography in managing shock, emphasizing its use as a quick diagnostic tool, a monitoring device for treatment effectiveness, and a means to identify patients ready for reduced therapy.
  • Recent findings highlight echocardiography’s critical role in diagnosing shock and evaluating treatment adequacy by providing insights into heart function and blood flow, especially when combined with advanced monitoring techniques.
  • Overall, the review offers a comprehensive look at how echocardiography contributes to various stages of shock treatment, including its importance in de-escalating therapy when appropriate.
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  • End-expiratory occlusion (EEO) and end-inspiratory occlusion (EIO) tests were evaluated to see if they could accurately predict fluid responsiveness in patients after cardiac surgery.
  • The study involved 57 patients who underwent elective coronary artery bypass grafting, focusing on measurements like cardiac index (CI) and stroke volume before and after fluid expansion.
  • Results showed that neither EEO nor EIO could reliably predict fluid responsiveness, with a combined measure showing low sensitivity and specificity when assessing CI changes.
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  • Treatment options for rewarming severely hypothermic patients with good circulation are not strongly supported by clinical trials, prompting a study comparing extracorporeal and less-invasive rewarming methods.
  • A multicenter retrospective study used data from various hypothermia registries to analyze outcomes in patients with core temperatures below 28°C.
  • Results showed that extracorporeal rewarming led to a higher survival rate compared to less-invasive methods, with key factors influencing survival including age, cooling circumstances, and absence of comorbidities.
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  • A prospective study was conducted on Covid-19 ARDS patients to investigate how the location of chest drains affects the detection of pneumothorax through bedside imaging methods like chest ultrasound (CUS) and X-ray.
  • Out of 106 pneumothorax cases, the study found that chest drains were more accurately located with CUS in patients who experienced full lung expansion, while a significant percentage had residual pneumothorax post-drainage.
  • Key indicators of a likely residual pneumothorax included an invisible chest drain on CUS, a low chest drain index (CDI) on X-ray, and observable continuous air leaks from the drain.
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  • * Managing cardiogenic shock is difficult, as treatments like inotropic support and antiarrhythmic drugs can worsen the heart's condition or lead to further complications.
  • * Temporary mechanical circulatory support (MCS) devices can help maintain blood flow and buy time for doctors to address the root causes of arrhythmias, but their use is still recommended cautiously due to limited research on effective timing and device types.
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Background: In patients receiving venovenous (VV) extracorporeal membrane oxygenation (ECMO) packed red blood cell (PRBC) transfusion thresholds are usually higher than in other patients who are critically ill. Available guidelines suggest a restrictive approach, but do not provide specific recommendations on the topic. The main aim of this study was, in a short timeframe, to describe the actual values of haemoglobin and the rate and the thresholds for transfusion of PRBC during VV ECMO.

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