Publications by authors named "Johannes Grand"

Background: Cardiogenic shock complicating acute myocardial infarction is associated with a high mortality rate. Cardiogenic shock after out-of-hospital cardiac arrest (OHCA) can be due to transient myocardial stunning but also reflect the increasing severity of ongoing heart failure. The Society for Cardiovascular Angiography and Interventions (SCAI) proposed a division of cardiogenic shock into 5 phenotypes, with cardiac arrest being a modifier.

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Background: The Blood Pressure and Oxygenation Targets After out-of-hospital cardiac arrest (BOX) trial found no statistically significant differences in mortality or neurological outcomes with mean arterial blood pressure targets of 63 versus 77 mmHg in patients receiving intensive care post-cardiac arrest. In this study, we aimed to evaluate the effect on 1-year mortality and assess heterogeneity in treatment effects (HTE) using Bayesian statistics.

Methods: We analyzed 1-year all-cause mortality, 1-year neurological outcomes, and plasma neuron-specific enolase (NSE) at 48 hours using Bayesian logistic and linear regressions primarily with weakly informative priors.

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Article Synopsis
  • - This review examines important time-sensitive heart conditions that pose major health challenges in Western countries.
  • - It includes both elective conditions and those needing urgent medical or surgical care, such as acute coronary syndrome and pulmonary embolism.
  • - The goal is to enhance understanding of these conditions, their effects on patient outcomes, and the latest treatment approaches in critical scenarios.
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Background: Oxygen therapy is commonly administered to patients with acute cardiovascular conditions during hospitalisation. Both hypoxaemia and hyperoxia can cause harm, making it essential to maintain oxygen saturation (SpO) within a target range. Traditionally, oxygen administration is manually controlled by nursing staff, guided by intermittent pulse oximetry readings.

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  • In managing patients revived from cardiac arrest, a key objective is to ensure enough oxygen delivery (DO) to meet oxygen consumption (VO) needs.
  • The study analyzed two target mean arterial blood pressures (MAP) of 63 mm Hg (MAP63) and 77 mm Hg (MAP77), alongside different arterial oxygen partial pressure (PaO) targets, in comatose patients who suffered out-of-hospital cardiac arrests.
  • Results demonstrated that a MAP of 77 mm Hg increased DO and VO compared to 63 mm Hg, while varying PaO targets didn’t affect DO or VO outcomes.
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  • Out-of-hospital cardiac arrest (OHCA) survivors are at high risk for brain injury, leading to potential withdrawal of life support; accurate neuroprognostication methods, like automated pupillometry, are crucial to avoid premature decisions.
  • In a multi-center study involving 710 comatose OHCA patients, the research aimed to validate specific pupillometry thresholds—NPi ≤ 2 and qPLR < 4%—to predict unfavorable neurological outcomes without false positives.
  • Results showed that the proposed pupillometry thresholds were effective in predicting poor outcomes at various time points and improved the sensitivity of neuron-specific enolase (NSE) testing, supporting a multimodal approach to neuropro
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  • The STEROHCA trial studied the effect of high-dose glucocorticoids on inflammation in patients who suffered out-of-hospital cardiac arrest (OHCA), showing promising results in reducing inflammatory markers.
  • In a sample of 137 OHCA patients, those who received glucocorticoids had improved anti-inflammatory responses compared to the placebo group, with survival rates of 75% vs. 64% at 180 days.
  • The treatment significantly reduced several pro-inflammatory cytokines within 24 hours of administration, indicating potential benefits of glucocorticoids in managing post-cardiac arrest syndrome.
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  • Semaglutide is a medicine that helps people with type 2 diabetes and weight issues by lowering blood sugar and promoting weight loss, but its side effects for different patients haven’t been fully studied yet.!
  • A systematic review is planned to look into the risks and side effects of semaglutide by analyzing various clinical trials, with a focus on comparing it to a placebo (a fake treatment) and looking at serious health outcomes.!
  • The results of this review will be shared in scientific journals, but right now, they are still in the planning stages and haven’t gathered any data yet.!
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Introduction: Intravenous loop diuretics have been a key component in treating pulmonary oedema since the 1960s and have a Class 1 recommendation in the 2021 guidelines for acute heart failure (AHF). While the diuretic effect of loop diuretics is well established, it remains unclear how furosemide influences pulmonary congestion and cardiac filling pressures in the hyperacute phase before significant diuresis occurs.

Methods: This was a prospective study of adult patients with AHF and objective signs of pulmonary congestion admitted to the cardiac ward.

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Background: To assess the effect of targeting higher or lower blood pressure during postresucitation intensive care among comatose patients with out-of-hospital cardiac arrest with a history of heart failure.

Methods: The BOX trial (Blood Pressure and Oxygenation Targets After Out-of-Hospital Cardiac Arrest) was a randomized, controlled, double-blinded, multicenter study comparing titration of vasopressors toward a mean arterial pressure (MAP) of 63 versus 77 mm Hg during postresuscitation intensive care. Patients with a history of heart failure were included in this substudy.

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Background: Acute heart failure is a public health concern. This study systematically reviewed randomized clinical trials (RCTs) to evaluate vasodilators in acute heart failure.

Methods: The search was conducted across the databases of Medline, Embase, Latin American and the Caribbean Literature on Health Sciences, Web of Science, and the Cochrane Central Register of Controlled Trials.

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  • Acute kidney injury (AKI) significantly impacts long-term survival rates in patients who experience out-of-hospital cardiac arrest (OHCA), raising questions about its role as a primary risk factor versus a marker of initial condition severity.
  • A study involving 759 comatose OHCA patients categorized them based on AKI severity using the KDIGO classification and assessed their survival rates over 365 days using adjusted Cox regression models.
  • Results indicated that patients with AKI, whether requiring continuous kidney replacement therapy (CKRT) or not, had markedly lower survival rates compared to those without AKI, with similar hazard ratios indicating a consistent risk associated with both AKI groups.
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Introduction: Acute heart failure (AHF) is a critical, costly condition with high mortality rates, affecting millions annually. Despite advances in cardiovascular care, AHF treatment lacks robust evidence. AHF commonly manifests with sudden heart failure symptoms such as pulmonary congestion, and the pathophysiology involves fluid overload.

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Background: The management of blood pressure targets during intensive care after out-of-hospital cardiac arrest (OHCA) remains a topic of debate. The blood Pressure and Oxygenation Targets After OHCA (BOX) trial explored the efficacy of two different blood pressure targets in 789 patients during intensive care after OHCA. In the primary frequentist analysis, no statistically significant differences were found for neurological outcome after 90 days.

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Aims: While computed tomography (CT) is widely acknowledged as superior to chest radiographs for acute diagnostics, its efficacy in diagnosing acute heart failure (AHF) remains unexplored. This prospective study included consecutive patients with dyspnoea undergoing simultaneous low-dose chest CT (LDCT) and chest radiographs. Here, we aimed to determine if LDCT is superior to chest radiographs to confirm pulmonary congestion in dyspnoeic patients with suspected AHF.

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Background: Following resuscitated out-of-hospital cardiac arrest (OHCA), inflammatory markers are significantly elevated and associated with hemodynamic instability and organ dysfunction. Vasopressor support is recommended to maintain a mean arterial pressure (MAP) above 65 mmHg. Glucocorticoids have anti-inflammatory effects and may lower the need for vasopressors.

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Article Synopsis
  • - The BOX trial examined the effects of different blood pressure and oxygenation targets, as well as varying durations of fever prevention, on the health outcomes of comatose patients after cardiac arrest, ultimately finding no significant differences in long-term disability or mortality rates.
  • - Conducted as a randomized controlled trial, 789 patients were assigned to either low or high blood pressure targets, restrictive or liberal oxygenation levels, and differing durations of fever control, with a one-year follow-up for mortality.
  • - Results showed similar one-year mortality rates across all tested interventions, indicating that neither the low/high blood pressure nor the restrictive/liberal oxygenation strategies significantly impacted patient survival outcomes after one year.
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Objectives: The aim was to investigate the advanced hemodynamic effects of the two MAP-targets during intensive care on systemic hemodynamics in comatose patients after cardiac arrest.

Design: Secondary analysis of a randomized controlled trial.

Setting: Primary vasopressor used was per protocol norepinephrine.

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  • Bystander defibrillation boosts survival rates and good neurological outcomes for out-of-hospital cardiac arrest (OHCA) cases, and understanding lay responders' impact is important.
  • In a study involving 715 OHCA patients from two Danish hospitals, 125 cases had lay responders arrive before EMS, with 81 patients defibrillated by them compared to 69 by bystanders and 565 by EMS staff.
  • Results showed that 3-month survival with good neurological outcomes was at 81% for bystander cases compared to 65% for lay responders, indicating that bystander intervention is more effective in improving patient outcomes.
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Purpose: Patients who are successfully resuscitated following out-of-hospital cardiac arrest (OHCA) are still at a high risk of neurological damage and death. Inflammation and brain injury are components of the post-cardiac arrest syndrome, and can be assessed by systemic interleukin 6 (IL-6) and neuron-specific enolase (NSE). Anti-inflammatory treatment with methylprednisolone may dampen inflammation, thereby improving outcome.

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Aim: To assess the association with outcomes of cardiac index (CI) and mixed venous oxygen saturation (SvO2) in comatose patients resuscitated from out-of-hospital cardiac arrest (OHCA).

Methods: In the cohort study of 789 patients included in the "BOX"-trial, 565 (77%) patients were included in this hemodynamic substudy (age 62 ± 13 years, male sex 81%). Pulmonary artery catheters were inserted shortly after ICU admission.

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Background: Out-of-hospital cardiac arrest (OHCA) survivors remaining comatose are often circulatory unstable with high mortality in the first days following resuscitation. Elevated lactate will reflect the severity and duration of hypoperfusion in cardiac arrest. Further, the severity of hypoperfusion could modify the effect on survival of different mean arterial blood pressure (MAP) targets.

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  • Acute kidney injury (AKI) is a serious concern following out-of-hospital cardiac arrest, and this study investigates how different blood pressure and oxygenation targets during post-resuscitation care affect AKI risk.
  • The study involved 789 comatose adult patients and compared two blood pressure targets (63 vs. 77 mm Hg) and two oxygen targets (9-10 kPa vs. 13-14 kPa) to determine AKI incidence based on KDIGO criteria.
  • Results showed that patients with low blood pressure and liberal oxygen target had a higher risk (44% vs. 30%) of developing mild-stage AKI, although plasma creatinine levels did not differ significantly at the 6- and 12
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Background: Resuscitation guidelines propose a multimodal prognostication strategy algorithm at ≥72 hours after the return of spontaneous circulation to evaluate neurological outcome for unconscious cardiac arrest survivors. Even though guidelines suggest quantitative pupillometry for assessing pupillary light reflex, threshold values are not yet validated.This study aims to validate pre-specified thresholds of quantitative pupillometry by quantitatively assessing the percentage reduction of pupillary size (qPLR) <4% and Neurological Pupil index (NPi) ≤2 and in predicting unfavorable neurological outcome.

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