Publications by authors named "George Karlis"

Ventilation in a prone position (PP) for 12 to 16 h per day improves survival in ARDS. However, the optimal duration of the intervention is unknown. We performed a prospective observational study to compare the efficacy and safety of a prolonged PP protocol with conventional prone ventilation in COVID-19-associated ARDS.

View Article and Find Full Text PDF

Introduction: One of the most important tasks in the Emergency Department (ED) is to promptly identify the patients who will benefit from hospital admission. Machine Learning (ML) techniques show promise as diagnostic aids in healthcare.

Aim Of The Study: Our objective was to find an algorithm using ML techniques to assist clinical decision-making in the emergency setting.

View Article and Find Full Text PDF

Aim: Postresuscitation hemodynamics are associated with hospital mortality/functional outcome. We sought to determine whether low-dose steroids started during and continued after cardiopulmonary resuscitation (CPR) affect postresuscitation hemodynamics and other physiological variables in vasopressor-requiring, in-hospital cardiac arrest.

Methods: We conducted a two-center, randomized, double-blind trial of patients with adrenaline (epinephrine)-requiring cardiac arrest.

View Article and Find Full Text PDF

Background: The present study aimed to assess micronutrient intake among Greek adults and to identify the main food sources that contribute to it.

Methods: Food consumption data from 2389 participants in the Hellenic National Nutrition and Health Survey (HNNHS), collected with 24-h recalls, was used to calculate micronutrient intakes. Usual nutrient intake was estimated according to the National Cancer Institute method.

View Article and Find Full Text PDF

Prognostication after cardiac arrest (CA) represents a challenging issue, and several biomarkers have been proposed in the attempt to predict outcome. Among these, F2-isoprostanes stand out as potential biomarkers for early prognostication, providing information on the magnitude of global oxidative injury after return of spontaneous circulation (ROSC). We performed a topical review searching PubMed and Scopus databases to identify studies evaluating the modifications of F2-isoprostanes in the early period after CA, and a meta-analysis of studies providing curves of F2-isoprostanes plasma levels seeking to describe the biomarker's kinetics after CA.

View Article and Find Full Text PDF

The original version of this article unfortunately contained a mistake. In Table 2, the frequency of Septic Shock reported just below the frequency of "At least 1 Episode of VAP" actually corresponds to the First (and not the Second) Episode of VAP during the postresuscitation period.

View Article and Find Full Text PDF

Purpose: Low-dose steroids may reduce the mortality of severely ill patients with septic shock. We sought to determine whether exposure to stress-dose steroids during and/or after cardiopulmonary resuscitation is associated with reduced risk of death due to postresuscitation septic shock.

Methods: We analyzed pooled, individual patient data from two prior, randomized clinical trials (RCTs).

View Article and Find Full Text PDF

Objective: To investigate an alternative combination for anaesthesia induction in swine.

Study Design: Randomized, 'blinded' experimental study.

Animals: Forty-five Landrace/Large White swine weighing 20.

View Article and Find Full Text PDF

Since the publication of 2000 guidelines for resuscitation, amiodarone is considered the antiarrhythmic drug of choice for refractory ventricular fibrillation/pulseless ventricular tachycardia. However, to date there is no proven benefit in terms of neurologically intact survival to hospital discharge. A comprehensive search of the recent literature on amiodarone, nifekalant and lidocaine in cardiac arrest was performed.

View Article and Find Full Text PDF

Background: Obesity has been demonstrated to increase the risk of out-of-hospital cardiac arrest (OHCA) and may influence the quality and effectiveness of cardiopulmonary resuscitation. Our aim was to investigate the association between body mass index (BMI) and the outcome of OHCA victims not treated by targeted temperature management.

Methods: This was a prospective observational study of OHCA patients.

View Article and Find Full Text PDF

Purpose: To assess whether use of Impedance Threshold Device (ITD) during cardiopulmonary resuscitation (CPR) reduces the degree of post-cardiac arrest Acute Kidney Injury (AKI), as a result of improved hemodynamics, in a porcine model of ventricular fibrillation (VF) cardiac arrest.

Methods: After 8 min of untreated cardiac arrest, the animals were resuscitated either with active compression-decompression (ACD) CPR plus a sham ITD (control group, n=8) or with ACD-CPR plus an active ITD (ITD group, n=8). Adrenaline was administered every 4 min and electrical defibrillation was attempted every 2 min until return of spontaneous circulation (ROSC) or asystole.

View Article and Find Full Text PDF

Introduction: The 2015 Guidelines for Resuscitation recommend amiodarone as the antiarrhythmic drug of choice in the treatment of resistant ventricular fibrillation or pulseless ventricular tachycardia. We reviewed the effects of amiodarone on survival and neurological outcome after cardiac arrest.

Methods: We systematically searched MEDLINE and Cochrane Library from 1940 to March 2016 without language restrictions.

View Article and Find Full Text PDF

Purpose: The purpose of the experiment was to compare the effects of nifekalant and amiodarone on the return of spontaneous circulation (ROSC), survival, as well as on the hemodynamic parameters in a swine model of prolonged ventricular fibrillation (VF).

Methods: After 8 min of untreated VF, bolus doses of epinephrine (adrenaline) and either nifekalant, or amiodarone, or saline (n = 10 per group), were administered after randomization. Cardiopulmonary resuscitation (CPR) was commenced immediately after drug administration and defibrillation was attempted 2 min later.

View Article and Find Full Text PDF

Objective: The European Paediatric Life Support (EPLS) provider course aims at training doctors and nurses in the efficient and prompt management of cardiopulmonary arrest in children. EPLS is a 2-day European Resuscitation Council course, involving the teaching of theoretical knowledge and practical skills. The aim of the study was to evaluate the retention of theoretical knowledge and certain skills of EPLS providers 4 months after the course.

View Article and Find Full Text PDF

Introduction: Venus cannulation is one of the main nursing actions. For the safety of patients and nurses, this skill is important to be performed in a proper and responsible way. Thus, the need for adequate education on this skill is essential.

View Article and Find Full Text PDF

The clinical presentation of community acquired pneumonia (CAP) in adults includes mainly symptoms from the respiratory system, whereas CAP is considered as a main cause of abdominal pain in pediatric patients. We present the case of a patient, who was admitted to our hospital due to abdominal pain that deteriorated progressively and radiated to the lumbar region. The clinical examination revealed decreased breath sounds at the right lung base after 72 h, while the chest X-ray showed pneumonia of the right lung base.

View Article and Find Full Text PDF

Symptomatic coronary artery disease (CAD) and heart failure (HF), either of ischaemic or nonischaemic aetiology, are common medical problems. Despite optimal medical treatment and improved revascularisation techniques, a significant number of patients are not successfully managed.Among the non-pharmacological, alternative, non-invasive treatments suggested for these patients, enhanced external counterpulsation (EECP) is considered the most effective one.

View Article and Find Full Text PDF