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Shaverdian M, Li RHL. Preventing Cardiogenic Thromboembolism in Cats: Literature Gaps, Rational Recommendations, and Future Therapies. Vet Clin North Am Small Anim Pract 2023; 53:1309-1323. [PMID: 37516545 DOI: 10.1016/j.cvsm.2023.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/31/2023]
Abstract
Cardiogenic arterial thromboembolism (CATE) is a devastating complication in cats with cardiomyopathies with significant morbidity and mortality. Despite recent advances in the diagnosis and treatment of CATE, its recurrence and mortality remain high. This highlights the urgent need for a greater understanding of CATE pathophysiology so that novel diagnostic tests and therapeutics can be developed. This comprehensive review aims to summarize existing literature on pathophysiology, clinical diagnosis, and current recommendations on the prevention and treatment of CATE. It also identifies and describes knowledge gaps and research priorities in the roles of immunothrombosis and procoagulant platelets in the pathogenesis of CATE.
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Affiliation(s)
- Meg Shaverdian
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, 2108 Tupper Hall, One Shields Avenue, Davis, CA 95616, USA
| | - Ronald H L Li
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA.
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Lo ST, Li RHL, Georges CJ, Nguyen N, Chen CK, Stuhlmann C, Oldach MS, Rivas VN, Fousse S, Harris SP, Stern JA. Synergistic inhibitory effects of clopidogrel and rivaroxaban on platelet function and platelet-dependent thrombin generation in cats. J Vet Intern Med 2023; 37:1390-1400. [PMID: 37208839 PMCID: PMC10365033 DOI: 10.1111/jvim.16727] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 04/07/2023] [Indexed: 05/21/2023] Open
Abstract
BACKGROUND Dual antithrombotic treatment (DAT) with clopidogrel and rivaroxaban sometimes is prescribed to cats with hypertrophic cardiomyopathy at risk of thromboembolism. To date, no studies have evaluated their combined effects on platelet function. OBJECTIVES/HYPOTHESIS Evaluate the safety of DAT in healthy cats and compare, ex vivo, platelet-dependent thrombin generation and agonist-induced platelet activation and aggregation in cats treated with clopidogrel, rivaroxaban, or DAT. We hypothesized that DAT would safely modulate agonist-induced platelet activation and aggregation more effectively than single agent treatment. ANIMALS Nine apparently healthy 1-year-old cats selected from a research colony. METHODS Unblinded, nonrandomized ex vivo cross-over study. All cats received 7 days of rivaroxaban (0.6 ± 0.1 mg/kg PO), clopidogrel (4.7 ± 0.8 mg/kg PO), or DAT with defined washout periods between treatments. Before and after each treatment, adenosine diphosphate (ADP)- and thrombin-induced platelet P-selectin expression was evaluated using flow cytometry to assess platelet activation. Platelet-dependent thrombin generation was measured by fluorescence assay. Platelet aggregation was assessed using whole blood impedance platelet aggregometry. RESULTS No cats exhibited adverse effects. Of the 3 treatments, only DAT significantly decreased the number of activated platelets (P = .002), modulated platelet activation in response to thrombin (P = .01), dampened thrombin generation potential (P = .01), and delayed maximum reaction velocity (P = .004) in thrombin generation. Like clopidogrel, DAT inhibited ADP-mediated platelet aggregation. However, rivaroxaban alone resulted in increased aggregation and activation in response to ADP. CONCLUSION AND CLINICAL IMPORTANCE Treatment combining clopidogrel and rivaroxaban (DAT) safely decreases platelet activation, platelet response to agonists, and thrombin generation in feline platelets more effectively than monotherapy with either clopidogrel or rivaroxaban.
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Affiliation(s)
- Sara T. Lo
- University of California Davis School of Veterinary MedicineWilliam R. Prichard Veterinary Medical Teaching HospitalDavisCaliforniaUSA
| | - Ronald H. L. Li
- Surgical and Radiological SciencesUniversity of California, DavisDavisCaliforniaUSA
| | - Catherine J. Georges
- University of California Davis School of Veterinary MedicineWilliam R. Prichard Veterinary Medical Teaching HospitalDavisCaliforniaUSA
| | - Nghi Nguyen
- Surgical and Radiological SciencesUniversity of California Davis School of Veterinary MedicineDavisCaliforniaUSA
| | - Cheyenne K. Chen
- Surgical and Radiological SciencesUniversity of California Davis School of Veterinary MedicineDavisCaliforniaUSA
| | - Claire Stuhlmann
- University of California Davis School of Veterinary MedicineWilliam R. Prichard Veterinary Medical Teaching HospitalDavisCaliforniaUSA
| | | | - Victor Noel Rivas
- Medicine and EpidemiologyUniversity of California Davis School of Veterinary MedicineDavisCaliforniaUSA
| | - Samantha Fousse
- University of California Davis School of Veterinary Medicine – VME, UC Davis 2108 Tupper Hall, One Shields AvenueDavis, California 95616‐5270USA
| | - Samantha P. Harris
- Cellular and Molecular Medicine, College of MedicineUniversity of ArizonaTucsonArizonaUSA
| | - Joshua A. Stern
- Department of Medicine & EpidemiologyUniversity of California, Davis, 2108 Tupper Hall, One Shields AvenueDavis, California 95616USA
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Kaddoura R, Orabi B, Yassin MA, Omar AS. Trends in Off-Label Indications of Non-Vitamin K Antagonist Oral Anticoagulants in Acute Coronary Syndrome. Rev Cardiovasc Med 2023; 24:180. [PMID: 39077529 PMCID: PMC11264133 DOI: 10.31083/j.rcm2406180] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 03/11/2023] [Accepted: 03/17/2023] [Indexed: 07/31/2024] Open
Abstract
Acute coronary syndrome (ACS) is a leading cause of mortality worldwide. Despite optimal antiplatelet therapy recommendation after ischemic events, recurrent thrombotic complications rate remains high. The recurrent events maybe in part due to increased thrombin levels during ACS which may underscore the need for an additional anticoagulation therapy. Given the advantages of non-vitamin K antagonist oral anticoagulants (NOACs) over warfarin, they have the potential to prevent thrombus formation, in the presence or absence of atrial fibrillation, but at the cost of increased risk of bleeding. NOACs have also shown a promising efficacy in managing left ventricular thrombus and a potential benefit in avoiding stent thrombosis after percutaneous coronary revascularization. Taken as a whole, NOACs are increasingly used for off-licence indications, and continue to evolve as essential therapy in preventing and treating thrombotic events. Herein, this review discusses NOACs off-label indications in the setting of ischemic coronary disease.
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Affiliation(s)
- Rasha Kaddoura
- Pharmacy Department, Heart Hospital, Hamad Medical Corporation, 3050 Doha, Qatar
| | - Bassant Orabi
- Pharmacy Department, Heart Hospital, Hamad Medical Corporation, 3050 Doha, Qatar
| | - Mohamed A Yassin
- Department of Hematology, National Center for Cancer Care and Research, Hamad Medical Corporation, 3050 Doha, Qatar
| | - Amr S Omar
- Department of Cardiothoracic Surgery/Intensive Care Unit, Heart Hospital, Hamad Medical Corporation, 3050 Doha, Qatar
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Lo ST, Walker AL, Georges CJ, Li RH, Stern JA. Dual therapy with clopidogrel and rivaroxaban in cats with thromboembolic disease. J Feline Med Surg 2021; 24:277-283. [PMID: 33966532 DOI: 10.1177/1098612x211013736] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVES Feline arterial thromboembolism (ATE), an often devastating outcome, was recently shown to affect 11.3% of cats with hypertrophic cardiomyopathy over 10 years. Current American College of Veterinary Internal Medicine guidelines recommend the use of clopidogrel in cats at risk for ATE, with addition of a factor Xa inhibitor in very high risk or post-ATE cases. To date, no studies have examined the safety or efficacy of this combined antithrombotic therapy. This retrospective case series aimed to assess the frequency and type of adverse events that occurred in cats prescribed dual clopidogrel and rivaroxaban therapy. Secondary aims were to evaluate indications for dual therapy and clinical outcome. METHODS The study included 32 cats prescribed clopidogrel (18.75 mg PO q24h) and rivaroxaban (2.5 mg PO q24h) on an outpatient basis over a 5-year period. RESULTS Cats were prescribed dual therapy for at least one of the following: ATE event (n = 18), presence of an intracardiac thrombi (n = 17) or presence of spontaneous echocardiographic contrast (SEC) (n = 16). Five cats experienced adverse effects that could be attributed to medications, a median of 13 days from initiation (epistaxis, hematemesis, hematochezia or hematuria). No cat required hospitalization as a result of these events. Median survival time from onset of therapy was 257 days (interquartile range [IQR] = 38-497) for all cats, 502 days (IQR = 171-663) for ATE cats, 725 days (IQR = 133-856) for cats with an ATE to two or more limbs and 301 days (IQR = 221-431) for cats with only one limb affected. Recurrence rate of ATE while on dual therapy was 16.7%; no cat newly developed an ATE while on dual therapy. CONCLUSIONS AND RELEVANCE Dual antithrombotic therapy with clopidogrel and rivaroxaban resulted in a low reported incidence of adverse events. Cats placed on dual therapy for an ATE event experienced a low rate of recurrence and effective thromboprophylaxis was achieved in cats with intracardiac thrombi or SEC.
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Affiliation(s)
- Sara T Lo
- William R Pritchard Veterinary Medical Teaching Hospital, University of California-Davis, Davis, CA, USA
| | - Ashley L Walker
- William R Pritchard Veterinary Medical Teaching Hospital, University of California-Davis, Davis, CA, USA
| | - Catherine J Georges
- William R Pritchard Veterinary Medical Teaching Hospital, University of California-Davis, Davis, CA, USA
| | - Ronald Hl Li
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California-Davis, Davis, CA, USA
| | - Joshua A Stern
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California-Davis, Davis, CA, USA
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Chen C, Kan Y, Shi Z, Guo D, Fu W, Li Y, Lv Q, Li X, Si Y. Low Dose Rivaroxaban for Atherosclerotic Cardiovascular Diseases: A Systematic Review and Meta-analysis. Front Pharmacol 2021; 11:608247. [PMID: 33732144 PMCID: PMC7957832 DOI: 10.3389/fphar.2020.608247] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 12/21/2020] [Indexed: 11/13/2022] Open
Abstract
Background: This study aims to explore the role of low-dose rivaroxaban (≤10 mg daily) for the treatment of atherosclerotic cardiovascular disease (ASCVD). Methods: PubMed, Embase and the Cochrane Library were searched for randomized controlled trials (RCTs) of low-dose rivaroxaban in patients with ASCVD including coronary artery disease (CAD) and peripheral artery disease (PAD). Literature screening, data extraction, and risk of bias assessment were carried out independently by two researchers. Hazard ratio (HR) and 95% confidence interval (CI) were calculated using random-effect models to determine risks of outcomes in ASCVD patients treated with rivaroxaban and comparators, and meta-analysis was conducted via Review Manager 5.3.5 software. Results: 3,768 records were obtained through literature search, and 9 articles representing 6 RCTs ultimately qualified for this study. The meta-analysis indicated that for patients with CAD, the addition of rivaroxaban (5 mg daily) to aspirin could significantly reduce the risk of major adverse cardiovascular events (MACEs) compared with aspirin alone (HR 0.81, 95% CI, 0.72 to 0.91, p = 0.0004, I2 = 60%, 4 studies). For PAD patients receiving rivaroxaban (5 mg daily) plus aspirin, there was no significant reduction in the risk of MACEs (HR 0.84, 95% CI, 0.63 to 1.13, p = 0.25, I2 = 74%, 2 studies); however, there was significant reduction in major adverse limb events (MALEs) (HR 0.54, 95% CI, 0.35 to 0.83, p = 0.005, one studies) and in the composite of MACEs or MALEs (HR 0.78, 95% CI, 0.64 to 0.95, p = 0.02, I2 = 66%, 2 studies) when compared with patients receiving aspirin alone. Meanwhile, rivaroxaban combined with aspirin significantly increased the risk of International Society on Thrombosis and Haemostasis (ISTH) major bleeding compared with aspirin alone in patients with CAD (HR 1.74, 95% CI, 1.43 to 2.13, p < 0.00001, I2 = 0%, 2 studies) and PAD (HR 1.47, 95% CI, 1.19 to 1.83, p = 0.0004, I2 = 0%, 2 studies). Conclusions: Compared with standard antiplatelet therapy, the addition of a 5 mg daily dose of rivaroxaban to standard antiplatelet therapy may improve cardiovascular or limb outcomes of patients with ASCVD, with an increase in major bleeding. Patients who would benefit from the addition of low-dose rivaroxaban to antiplatelet agents and appropriate dual-pathway antithrombotic strategies should be identified in clinical practice to individualize antithrombotic therapy.
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Affiliation(s)
- Can Chen
- Department of Pharmacy, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yuanqing Kan
- Department of Vascular Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Zhenyu Shi
- Department of Vascular Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Daqiao Guo
- Department of Vascular Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Weiguo Fu
- Department of Vascular Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yanli Li
- Department of Pharmacy, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Qianzhou Lv
- Department of Pharmacy, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Xiaoyu Li
- Department of Pharmacy, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yi Si
- Department of Vascular Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
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Xie C, Hang Y, Zhu J, Li C, Jiang B, Zhang Y, Miao L. Benefit and risk of adding rivaroxaban in patients with coronary artery disease: A systematic review and meta-analysis. Clin Cardiol 2020; 44:20-26. [PMID: 33219708 PMCID: PMC7803358 DOI: 10.1002/clc.23514] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/03/2020] [Accepted: 11/10/2020] [Indexed: 01/25/2023] Open
Abstract
Background Although the European Medicines Agency and the US Food and Drug Administration have, respectively, approved rivaroxaban for the prevention of recurrent major adverse cardiovascular events in patients with myocardial infarction and stable coronary artery disease, its efficacy and safety is unclear. This meta‐analysis aimed to evaluate the benefit and risk of adding rivaroxaban in coronary artery disease (CAD) patients, focusing on treatment effects stratified by different baseline clinical presentations. Hypothesis There are differences in treatment effects of adding rivaroxaban among CAD patients with different baseline clinical presentations. Methods Medline, EMBASE, and Cochrane Databases were systematically searched from inception to 21 July 2020 for randomized controlled trials (RCTs) comparing rivaroxaban in CAD patients. The primary efficacy endpoint and safety endpoint were assessed by using Mantel–Haenszel pooled risk ratios (RRs) and 95% confidence intervals (CIs). Results Five RCTs that included 43 650 patients were identified. Patients receiving rivaroxaban had a significantly lower risk of the primary efficacy endpoint (RR, 0.86; 95% CI, 0.76–0.97, p = .01) accompanied by increased risk of the primary safety endpoint (RR, 1.83; 95% CI, 1.10–3.05, p = .02). Subgroup analyses showed that in males the risk–benefit appears to be more favorable while in patients ≥65 years, in females, in patients with diabetes, those with mild to moderate impaired renal function, and region of Asia/other seems unfavorable. Conclusion Rivaroxaban may provide an additional choice for secondary prevention in CAD patients. However, careful estimation of the risk of ischemic and bleeding events using patient characteristics are critical to achieving net benefit.
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Affiliation(s)
- Cheng Xie
- Department of Clinical Pharmacology, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Yongfu Hang
- Department of Clinical Pharmacology, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Jianguo Zhu
- Department of Clinical Pharmacology, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Caiyun Li
- Department of Pharmacy, the Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, China
| | - Bin Jiang
- Department of Cardiology, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Yuzhen Zhang
- Department of Cardiology, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Liyan Miao
- Department of Clinical Pharmacology, the First Affiliated Hospital of Soochow University, Suzhou, China
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Mainka FF, Ferreira VL, Mendes AM, Marques GL, Fernandez-Llimos F, Tonin FS, Pontarolo R. Safety and Efficacy of Oral Anticoagulants Therapies in Patients With Atrial Fibrillation Undergoing Percutaneous Coronary Intervention: A Network Meta-Analysis. J Cardiovasc Pharmacol Ther 2020; 25:399-408. [DOI: 10.1177/1074248420930136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Background: Different antithrombotic treatments, from vitamin K antagonists to direct oral anticoagulants (DOACs), are available to reduce ischemic risks in patients with atrial fibrillation (AF) after percutaneous coronary intervention (PCI). Objective: To synthetize evidence about the benefit–risk ratio of antithrombotic treatments and their combinations in patients with AF and PCI. Methods: A network meta-analysis and a stochastic multicriteria acceptability analysis (SMAA) were performed including randomized controlled trials (RCT) that evaluate antithrombotic treatments in adults with AF and PCI. Searches were conducted in PubMed and Scopus (updated November-2019). Outcomes compared included bleeding, stroke, and death (Prospero registration: CRD42019146813). Results: Five RCTs were included (11 532 patients). Vitamin K antagonists + dual antiplatelet therapy was associated with major bleeding (odds ratio: 0.52 [95% CI: 0.32-0.86]) compared to DOAC + P2Y12. No statistical differences were found among DOAC regimens for the main outcomes, including bleeding, stroke, and death. Surface under the cumulative ranking curve analysis (SUCRA) and SMAA demonstrated edoxaban 60 mg + P2Y12 inhibitor as the worst option (28%). Apixaban 5 mg + P2Y12 inhibitor was the safest alternative (63%) in all scenarios. Conclusions: Insufficient evidence on the clinical superiority among anticoagulant regimens exists, although apixaban slightly stands out. Edoxaban was associated with more adverse events. To strength this evidence, well-designed, low risk of bias clinical trials are needed. Cost-minimization analyses are required to provide further information for clinical decision-making.
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Affiliation(s)
- Felipe F. Mainka
- Pharmaceutical Sciences Postgraduate Programme, Federal University of Paraná, Curitiba, Brazil
| | - Vinicius L. Ferreira
- Pharmaceutical Sciences Postgraduate Programme, Federal University of Paraná, Curitiba, Brazil
| | - Antonio M. Mendes
- Pharmaceutical Sciences Postgraduate Programme, Federal University of Paraná, Curitiba, Brazil
| | | | - Fernando Fernandez-Llimos
- Laboratory of Pharmacology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Fernanda S. Tonin
- Pharmaceutical Sciences Postgraduate Programme, Federal University of Paraná, Curitiba, Brazil
- Research Institute for Medicines (iMed.ULisboa), Universidade de Lisboa, Lisbon, Portugal
| | - Roberto Pontarolo
- Department of Pharmacy, Federal University of Paraná, Curitiba, Brazil
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Nagy Á, Kim JH, Jeong ME, Heo MH, Putzu A, Belletti A, Biondi-Zoccai G, Landoni G. Non-vitamin K oral anticoagulants for coronary or peripheral artery disease: a systematic review and meta-analysis of mortality and major bleeding. Minerva Cardioangiol 2019; 67:477-486. [PMID: 31625706 DOI: 10.23736/s0026-4725.19.05043-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Ádám Nagy
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Milan, Italy
- Károly Rácz School of PhD Studies, Semmelweis University, Budapest, Hungary
| | - Jun H Kim
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Milan, Italy
- Vita-Salute San Raffaele University, Milan, Italy
- Department of Anesthesiology and Pain Medicine, Ilsan Paik Hospital, Inje University, Goyang, South Korea
| | - Myeong E Jeong
- Department of Anesthesiology and Pain Medicine, Ilsan Paik Hospital, Inje University, Goyang, South Korea
| | - Min H Heo
- Department of Anesthesiology and Pain Medicine, Ilsan Paik Hospital, Inje University, Goyang, South Korea
| | - Alessandro Putzu
- Division of Anesthesiology, Department of Anesthesiology, Pharmacology, Intensive Care, and Emergency Medicine, Geneva University Hospital, Geneva, Switzerland
| | - Alessandro Belletti
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Giuseppe Biondi-Zoccai
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University, Rome, Italy
- Mediterranea Cardiocentro, Naples, Italy
| | - Giovanni Landoni
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Milan, Italy -
- Vita-Salute San Raffaele University, Milan, Italy
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