Constantine Karvellas
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View article: Intensive care unit and hospital mortality for non-COVID critically ill patients before, and during the COVID-19 pandemic in Alberta hospitals: retrospective, observational cohort study
Intensive care unit and hospital mortality for non-COVID critically ill patients before, and during the COVID-19 pandemic in Alberta hospitals: retrospective, observational cohort study Open
Objectives The Coronavirus Disease-2019 (COVID-19) pandemic had indirect impacts on healthcare provided to critically ill intensive care unit (ICU) non-COVID patients and their outcomes. Therefore, we examined the effect of the COVID-19 pa…
View article: Hepatitis B Virus Variants and Cytokine Patterns in Acute Liver Failure and Transplant‐Free Survival
Hepatitis B Virus Variants and Cytokine Patterns in Acute Liver Failure and Transplant‐Free Survival Open
Background & Aims Only 25% of hepatitis B‐related acute liver failure (HBV‐ALF) patients survive without liver transplantation (transplant‐free survival, TFS). There is limited study of immunological and virological profiles in these patie…
View article: Stakeholder perspectives on the reduction of opioid exposure in ICU: A modified Delphi survey
Stakeholder perspectives on the reduction of opioid exposure in ICU: A modified Delphi survey Open
This study highlights that both patients and families value reducing opioid exposure and exploring alternatives, aligning with healthcare providers' goals. Improved communication and education about opioid use can enhance patient-centered …
View article: Defining Organ Failures in Patients With Cirrhosis: Consensus Statements
Defining Organ Failures in Patients With Cirrhosis: Consensus Statements Open
View article: Therapeutic Plasma Exchange in Patients With Acute‐On‐Chronic Liver Failure Improves Survival—An Updated Meta‐Analysis
Therapeutic Plasma Exchange in Patients With Acute‐On‐Chronic Liver Failure Improves Survival—An Updated Meta‐Analysis Open
Background and Aim Acute‐on‐chronic liver failure (ACLF) is a syndrome that develops after an acute insult and is associated with organ failures and high short‐term mortality. Plasma exchange (PLEX) is an emerging modality for treating ACL…
View article: Brain CT Scan Diagnostic and Prognostic Value in Patients With Acute Liver Failure and Cerebral Edema: A Multicenter Cohort Study
Brain CT Scan Diagnostic and Prognostic Value in Patients With Acute Liver Failure and Cerebral Edema: A Multicenter Cohort Study Open
OBJECTIVE: Patients with acute liver failure (ALF) may develop cerebral edema. We aimed to study the CT scan diagnostic and prognostic value among patients with ALF and cerebral edema. DESIGN: International multicenter retrospective cohort…
View article: Acute-on-chronic liver failure (ACLF): the ‘Kyoto Consensus’—steps from Asia
Acute-on-chronic liver failure (ACLF): the ‘Kyoto Consensus’—steps from Asia Open
Acute-on-chronic liver failure (ACLF) is a condition associated with high mortality in the absence of liver transplantation. There have been various definitions proposed worldwide. The first consensus report of the working party of the Asi…
View article: Serum proteomics of adults with acute liver failure provides mechanistic insights and attractive prognostic biomarkers
Serum proteomics of adults with acute liver failure provides mechanistic insights and attractive prognostic biomarkers Open
Acute liver failure (ALF) is a sudden, and severe condition associated with high fatality. More sensitive and specific prognostic scores are urgently needed to facilitate decision-making regarding liver transplantation in patients with ALF…
View article: Stakeholder Perspectives on the Reduction of Opioid Exposure in Icu: A Modified Delphi Survey
Stakeholder Perspectives on the Reduction of Opioid Exposure in Icu: A Modified Delphi Survey Open
View article: Adjunctive Midodrine Therapy for Vasopressor-Dependent Shock in the ICU: A Systematic Review and Meta-Analysis
Adjunctive Midodrine Therapy for Vasopressor-Dependent Shock in the ICU: A Systematic Review and Meta-Analysis Open
OBJECTIVES: To summarize the efficacy of midodrine as an adjunctive therapy in critically ill patients. Safety of midodrine was assessed as a secondary outcome. DATA SOURCES: We performed a systematic review and meta-analysis using a peer-…
View article: Midodrine for the early liberation from vasopressor support in the ICU (LIBERATE): a feasibility study
Midodrine for the early liberation from vasopressor support in the ICU (LIBERATE): a feasibility study Open
This pilot RCT was registered at clinicaltrials.gov (NCT04489589). Registered July 27, 2020. https://clinicaltrials.gov/study/NCT04489589.
View article: Liver assistive devices in acute liver failure: Current use and future directions
Liver assistive devices in acute liver failure: Current use and future directions Open
Acute liver failure (ALF) is a rare syndrome where rapid deterioration of liver function occurs after an acute insult in a patient without prior chronic liver disease and leads to jaundice, hepatic encephalopathy (HE), and oftentimes multi…
View article: Outcomes of patients with acute liver failure not listed for liver transplantation: A cohort analysis
Outcomes of patients with acute liver failure not listed for liver transplantation: A cohort analysis Open
Background: Acute liver failure (ALF) is a rare condition leading to morbidity and mortality. Liver transplantation (LT) is often required, but patients are not always listed for LT. There is a lack of data regarding outcomes in these pati…
View article: Association of Hepatorenal Syndrome-Acute Kidney Injury with Mortality in Patients with Cirrhosis Requiring Renal Replacement Therapy
Association of Hepatorenal Syndrome-Acute Kidney Injury with Mortality in Patients with Cirrhosis Requiring Renal Replacement Therapy Open
Key Points In patients with cirrhosis and AKI requiring renal replacement therapy (RRT), hepatorenal syndrome-AKI was not associated with an increased 90-day mortality when compared with other AKI etiologies. Etiology of AKI may not be a c…
View article: Risk evaluation and recipient selection in adult liver transplantation: A mixed-methods survey
Risk evaluation and recipient selection in adult liver transplantation: A mixed-methods survey Open
Background: Liver transplant (LT) is the definitive treatment for end-stage liver disease. Limited resources and important post-operative implications for recipients compel judicious risk stratification and patient selection. However, litt…
View article: Midodrine for the early liberation from vasopressor support in the ICU (LIBERATE): A feasibility study
Midodrine for the early liberation from vasopressor support in the ICU (LIBERATE): A feasibility study Open
Background: Malnutrition is the most common nutritional disorder in developing countries and it remains one of the most common causes of morbidity and mortality among children worldwide. Childhood malnutrition is a multi-dimensional proble…
View article: Macrophage activation markers are associated with infection and mortality in patients with acute liver failure
Macrophage activation markers are associated with infection and mortality in patients with acute liver failure Open
Background and Aims Acute liver failure is a multisystem disorder with a high mortality and frequent need for emergency liver transplantation. Following massive innate immune system activation, soluble markers of macrophage activation are …
View article: Evidence related to a vegetarian diet and metabolic dysfunction-associated steatotic liver disease: protocol for a scoping review
Evidence related to a vegetarian diet and metabolic dysfunction-associated steatotic liver disease: protocol for a scoping review Open
Introduction Metabolic dysfunction-associated fatty liver disease (MASLD) is the hepatic manifestation of metabolic syndrome and the leading cause of chronic liver disease worldwide. Given that there is no pharmacological treatment for MAS…
View article: Perturbations in human bile acid profiles following drug‐induced liver injury investigated using semitargeted high‐resolution mass spectrometry
Perturbations in human bile acid profiles following drug‐induced liver injury investigated using semitargeted high‐resolution mass spectrometry Open
Rationale Acetaminophen (APAP) overdose is the leading cause of acute liver failure (ALF) in North America. To investigate the effect of drug‐induced liver injury (DILI) on circulating bile acid (BA) profiles, serum from ALF patients and h…
View article: Protective effects of cyclosporine and its analog NIM-811 in a murine model of hepatic ischemia-reperfusion injury
Protective effects of cyclosporine and its analog NIM-811 in a murine model of hepatic ischemia-reperfusion injury Open
View article: Long-Term Follow-Up of Kidney Function after Acute Liver Failure or Acute Liver Injury: A Cohort Study
Long-Term Follow-Up of Kidney Function after Acute Liver Failure or Acute Liver Injury: A Cohort Study Open
Introduction: Acute liver failure (ALF) is a rare disease with high mortality. Acute kidney injury (AKI) following ALF is frequent. We assessed AKI impact on long-term kidney function among ALF survivors. Methods: Observational cohort stud…
View article: Stakeholder Perspectives on the Reduction of Opioid Exposure in Icu: A Modified Delphi Survey
Stakeholder Perspectives on the Reduction of Opioid Exposure in Icu: A Modified Delphi Survey Open
View article: Cyclosporine A Does Not Mitigate Liver Ischemia/Reperfusion Injury in an Ex Vivo Porcine Model of Donation After Circulatory Death
Cyclosporine A Does Not Mitigate Liver Ischemia/Reperfusion Injury in an Ex Vivo Porcine Model of Donation After Circulatory Death Open
BACKGROUND Ischemia/reperfusion injury (IRI) is an inherent problem in organ transplantation, owing to the obligate period of ischemia that organs must endure. Cyclosporine A (CsA), though better know as an immunosuppressant, has been show…
View article: What every Intensivist should know about ... Ammonia in liver failure
What every Intensivist should know about ... Ammonia in liver failure Open
Serum ammonia may have prognostic value in liver failure. Effective ammonia targeted therapeutic strategies are available, such as laxatives, rifaximin, L-ornithine-l-aspartate, and continuous renal replacement therapy.
View article: Letter: Exploring the clinical utility of ammonia in critically ill patients with cirrhosis: More to do? Authors' reply
Letter: Exploring the clinical utility of ammonia in critically ill patients with cirrhosis: More to do? Authors' reply Open
LINKED CONTENT This article is linked to Cardoso et al papers. To view these articles, visit https://doi.org/10.1111/apt.17650 and https://doi.org/10.1111/apt.17698
View article: Systemic Nonsteroidal Anti-Inflammatories for Analgesia in Postoperative Critical Care Patients: A Systematic Review and Meta-Analysis of Randomized Control Trials
Systemic Nonsteroidal Anti-Inflammatories for Analgesia in Postoperative Critical Care Patients: A Systematic Review and Meta-Analysis of Randomized Control Trials Open
OBJECTIVES: While opioids are part of usual care for analgesia in the ICU, there are concerns regarding excess use. This is a systematic review of nonsteroidal anti-inflammatory drugs (NSAIDs) use in postoperative critical care adult patie…
View article: Management of the acute on chronic liver failure in the intensive care unit
Management of the acute on chronic liver failure in the intensive care unit Open
Acute on chronic liver failure (ACLF) reflects the development of organ failure(s) in a patient with cirrhosis and is associated with high short‐term mortality. Given that ACLF has many different ‘phenotypes’, medical management needs to t…
View article: The novel SALT-M score predicts 1-year post-transplant mortality in patients with severe acute-on-chronic liver failure
The novel SALT-M score predicts 1-year post-transplant mortality in patients with severe acute-on-chronic liver failure Open
View article: Future directions in acute liver failure
Future directions in acute liver failure Open
Acute liver failure (ALF) describes a clinical syndrome of rapid hepatocyte injury leading to liver failure manifested by coagulopathy and encephalopathy in the absence of pre-existing cirrhosis. The hallmark diagnostic features are a prol…
View article: Role of Terlipressin in Patients With Hepatorenal Syndrome-Acute Kidney Injury Admitted to the ICU: A Substudy of the CONFIRM Trial
Role of Terlipressin in Patients With Hepatorenal Syndrome-Acute Kidney Injury Admitted to the ICU: A Substudy of the CONFIRM Trial Open
IMPORTANCE AND OBJECTIVES: This study assessed the potential advantages of treating hepatorenal syndrome-acute kidney injury (HRS-AKI) with terlipressin versus placebo in the ICU setting. DESIGN: Patients were randomly assigned in a 2:1 ra…