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Banovic M, Iung B, Putnik S, Mahendiran T, Vanderheyden M, Barbato E, Bartunek J. Asymptomatic Aortic Stenosis: From Risk Stratification to Treatment. Am J Cardiol 2024; 218:51-62. [PMID: 38432341 DOI: 10.1016/j.amjcard.2024.02.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 02/05/2024] [Accepted: 02/23/2024] [Indexed: 03/05/2024]
Abstract
Our understanding of the natural history of aortic stenosis has significantly increased over the last decade. There have been considerable advances in the diagnosis and risk stratification of patients with aortic stenosis and in surgical and anesthetic techniques. In addition, transcatheter aortic valve replacement has established itself as a viable alternative to surgical management. Inevitably, these developments have raised questions regarding the merits of waiting for symptom onset in asymptomatic patients with severe aortic stenosis before offering treatment. Recent observational and randomized trial data suggest that early intervention in asymptomatic patients with severe aortic stenosis and normal left ventricular function may confer a prognostic advantage to a watchful waiting strategy. In this review, we highlight advances in the management and risk stratification of patients with asymptomatic severe aortic stenosis with particular consideration of recent findings supporting early valvular intervention.
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Affiliation(s)
- Marko Banovic
- Cardiology Department, University Clinical Center of Serbia, Belgrade, Serbia; Belgrade Medical Faculty, University of Belgrade, Serbia.
| | - Bernard Iung
- Cardiology Department, Bichat Hospital APHP and Université Paris Cité, France
| | - Svetozar Putnik
- Belgrade Medical Faculty, University of Belgrade, Serbia; Cardiac-Surgery Department, University Clinical Center of Serbia, Belgrade, Serbia
| | - Thabo Mahendiran
- Cardiovascular Center, OLV Hospital, Aalst, Belgium; Cardiology Department, Lausanne University Hospital, Lausanne, Switzerland
| | | | - Emanuele Barbato
- Cardiovascular Center, OLV Hospital, Aalst, Belgium; Department of Clinical and Molecular Medicine, Sapienza University, Rome, Italy
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Sakai K, Storozhenko T, Mizukami T, Ohashi H, Bouisset F, Tajima A, van Hoe L, Gallinoro E, Botti G, Mahendiran T, Pardaens S, Brouwers S, Fawaz S, Keeble TR, Davies JR, Sonck J, De Bruyne B, Collet C. Impact of vessel volume on thermodilution measurements in patients with coronary microvascular dysfunction. Catheter Cardiovasc Interv 2024. [PMID: 38566527 DOI: 10.1002/ccd.31020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 02/05/2024] [Accepted: 03/19/2024] [Indexed: 04/04/2024]
Abstract
BACKGROUND Two invasive methods are available to estimate microvascular resistance: bolus and continuous thermodilution. Comparative studies have revealed a lack of concordance between measurements of microvascular resistance obtained through these techniques. AIMS This study aimed to examine the influence of vessel volume on bolus thermodilution measurements. METHODS We prospectively included patients with angina with non-obstructive coronary arteries (ANOCA) undergoing bolus and continuous thermodilution assessments. All patients underwent coronary CT angiography to extract vessel volume. Coronary microvascular dysfunction was defined as coronary flow reserve (CFR) < 2.0. Measurements of absolute microvascular resistance (in Woods units) and index of microvascular resistance (IMR) were compared before and after volumetric adjustment. RESULTS Overall, 94 patients with ANOCA were included in this study. The mean age was 64.7 ± 10.8 years, 48% were female, and 19% had diabetes. The prevalence of CMD was 16% based on bolus thermodilution, while continuous thermodilution yielded a prevalence of 27% (Cohen's Kappa 0.44, 95% CI 0.23-0.65). There was no correlation in microvascular resistance between techniques (r = 0.17, 95% CI -0.04 to 0.36, p = 0.104). The adjustment of IMR by vessel volume significantly increased the agreement with absolute microvascular resistance derived from continuous thermodilution (r = 0.48, 95% CI 0.31-0.63, p < 0.001). CONCLUSIONS In patients with ANOCA, invasive methods based on coronary thermodilution yielded conflicting results for the assessment of CMD. Adjusting IMR with vessel volume improved the agreement with continuous thermodilution for the assessment of microvascular resistance. These findings strongly suggest the importance of considering vessel volume when interpreting bolus thermodilution assessment.
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Affiliation(s)
- Koshiro Sakai
- Cardiovascular Center Aalst, OLV Clinic, Aalst, Belgium
- Department of Medicine, Division of Cardiology, Showa University School of Medicine, Tokyo, Japan
| | - Tatyana Storozhenko
- Cardiovascular Center Aalst, OLV Clinic, Aalst, Belgium
- Department of Prevention and Treatment of Emergency Conditions, L.T. Malaya Therapy National Institute NAMSU, Kharkiv, Ukraine
| | - Takuya Mizukami
- Cardiovascular Center Aalst, OLV Clinic, Aalst, Belgium
- Division of Clinical Pharmacology, Department of Pharmacology, Showa University, Tokyo, Japan
- Department of Cardiovascular Medicine, Gifu Heart Center, Gifu, Japan
| | - Hirofumi Ohashi
- Department of Cardiology, Aichi Medical University, Aichi, Japan
| | - Frederic Bouisset
- Cardiovascular Center Aalst, OLV Clinic, Aalst, Belgium
- Department of Cardiology, Toulouse University Hospital, Toulouse, France
| | - Atomu Tajima
- Cardiovascular Center Aalst, OLV Clinic, Aalst, Belgium
- Department of Cardiology, Aichi Medical University, Aichi, Japan
| | | | - Emanuele Gallinoro
- Department of Biomedical and Clinical Sciences, University of Milan, Milan, Italy
| | - Giulia Botti
- Interventional Cardiology Unit, IRCCS Ospedale San Raffaele, Milan, Italy
| | | | | | - Sofie Brouwers
- Cardiovascular Center Aalst, OLV Clinic, Aalst, Belgium
- Department of Experimental Pharmacology, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Belgium
| | - Samer Fawaz
- Essex Cardiothoracic Centre, Mid and South Essex NHS Foundation Trust, Basildon, UK
- MTRC, Anglia Ruskin School of Medicine, Chelmsford, Essex, UK
| | - Thomas R Keeble
- Essex Cardiothoracic Centre, Mid and South Essex NHS Foundation Trust, Basildon, UK
- MTRC, Anglia Ruskin School of Medicine, Chelmsford, Essex, UK
| | - John R Davies
- Essex Cardiothoracic Centre, Mid and South Essex NHS Foundation Trust, Basildon, UK
- MTRC, Anglia Ruskin School of Medicine, Chelmsford, Essex, UK
| | - Jeroen Sonck
- Cardiovascular Center Aalst, OLV Clinic, Aalst, Belgium
| | - Bernard De Bruyne
- Cardiovascular Center Aalst, OLV Clinic, Aalst, Belgium
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Carlos Collet
- Cardiovascular Center Aalst, OLV Clinic, Aalst, Belgium
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Skalidis I, Noirclerc N, Meier D, Luangphiphat W, Cagnina A, Mauler-Wittwer S, Mahendiran T, De Bruyne B, Candreva A, Collet C, Sonck J, Muller O, Fournier S. Head-to-head comparison of two angiography-derived fractional flow reserve techniques in patients with high-risk acute coronary syndrome: A multicenter prospective study. Int J Cardiol 2024; 399:131663. [PMID: 38141730 DOI: 10.1016/j.ijcard.2023.131663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 12/04/2023] [Accepted: 12/18/2023] [Indexed: 12/25/2023]
Abstract
BACKGROUND FFRangio and QFR are angiography-based technologies that have been validated in patients with stable coronary artery disease. No head-to-head comparison to invasive fractional flow reserve (FFR) has been reported to date in patients with acute coronary syndromes (ACS). METHODS This study is a subset of a larger prospective multicenter, single-arm study that involved patients diagnosed with high-risk ACS in whom 30-70% stenosis was evaluated by FFR. FFRangio and QFR - both calculated offline by 2 different and blinded operators - were calculated and compared to FFR. The two co-primary endpoints were the comparison of the Pearson correlation coefficient between FFRangio and QFR with FFR and the comparison of their inter-observer variability. RESULTS Among 134 high-risk ACS screened patients, 59 patients with 84 vessels underwent FFR measurements and were included in this study. The mean FFR value was 0.82 ± 0.40 with 32 (38%) being ≤0.80. The mean FFRangio was 0.82 ± 0.20 and the mean QFR was 0.82 ± 0.30, with 27 (32%) and 25 (29%) being ≤0.80, respectively. The Pearson correlation coefficient was significantly better for FFRangio compared to QFR, with R values of 0.76 and 0.61, respectively (p = 0.01). The inter-observer agreement was also significantly better for FFRangio compared to QFR (0.86 vs 0.79, p < 0.05). FFRangio had 91% sensitivity, 100% specificity, and 96.8% accuracy, while QFR exhibited 86.4% sensitivity, 98.4% specificity, and 93.7% accuracy. CONCLUSION In patients with high-risk ACS, FFRangio and QFR demonstrated excellent diagnostic performance. FFRangio seems to have better correlation to invasive FFR compared to QFR but further larger validation studies are required.
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Affiliation(s)
- Ioannis Skalidis
- Department of Cardiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland; School of Medicine, University of Crete, Greece
| | - Nathalie Noirclerc
- Department of Cardiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - David Meier
- Department of Cardiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Wongsakorn Luangphiphat
- Department of Cardiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Aurelien Cagnina
- Department of Cardiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Sarah Mauler-Wittwer
- Department of Cardiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Thabo Mahendiran
- Department of Cardiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Bernard De Bruyne
- Department of Cardiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland; Cardiovascular Center Aalst, Aalst, Belgium
| | - Alessandro Candreva
- Department of Cardiology, University Hospital of Zurich, Zurich, Switzerland
| | | | | | - Olivier Muller
- Department of Cardiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Stephane Fournier
- Department of Cardiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.
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Mahendiran T, De Bruyne B. ANOCA and the Endothelium: A Link That Can NO Longer Be Ignored. JACC Cardiovasc Interv 2024; 17:488-490. [PMID: 38418054 DOI: 10.1016/j.jcin.2023.12.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 12/19/2023] [Indexed: 03/01/2024]
Affiliation(s)
- Thabo Mahendiran
- Cardiovascular Center Aalst, OLV Clinic, Aalst, Belgium; Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
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Belmonte M, Gallinoro E, Pijls NHJ, Bertolone DT, Keulards DCJ, Viscusi MM, Storozhenko T, Mizukami T, Mahendiran T, Seki R, Fournier S, de Vos A, Adjedj J, Barbato E, Sonck J, Damman P, Keeble T, Fawaz S, Gutiérrez-Barrios A, Paradies V, Bouisset F, Kern MJ, Fearon WF, Collet C, De Bruyne B. Measuring Absolute Coronary Flow and Microvascular Resistance by Thermodilution: JACC Review Topic of the Week. J Am Coll Cardiol 2024; 83:699-709. [PMID: 38325996 DOI: 10.1016/j.jacc.2023.12.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 12/01/2023] [Indexed: 02/09/2024]
Abstract
Diagnosing coronary microvascular dysfunction remains challenging, primarily due to the lack of direct measurements of absolute coronary blood flow (Q) and microvascular resistance (Rμ). However, there has been recent progress with the development and validation of continuous intracoronary thermodilution, which offers a simplified and validated approach for clinical use. This technique enables direct quantification of Q and Rμ, leading to precise and accurate evaluation of the coronary microcirculation. To ensure consistent and reliable results, it is crucial to follow a standardized protocol when performing continuous intracoronary thermodilution measurements. This document aims to summarize the principles of thermodilution-derived absolute coronary flow measurements and propose a standardized method for conducting these assessments. The proposed standardization serves as a guide to ensure the best practice of the method, enhancing the clinical assessment of the coronary microcirculation.
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Affiliation(s)
- Marta Belmonte
- Cardiovascular Center Aalst, OLV-Clinic, Aalst, Belgium; Department of Advanced Biomedical Sciences, University Federico II, Naples, Italy
| | - Emanuele Gallinoro
- Cardiovascular Center Aalst, OLV-Clinic, Aalst, Belgium; Cardiology Department, Galeazzi-Sant'Ambrogio Hospital, Milan, Italy
| | - Nico H J Pijls
- Department of Cardiology, Catharina Hospital, Eindhoven, the Netherlands.
| | | | - Danielle C J Keulards
- Department of Cardiology, Catharina Hospital, Eindhoven, the Netherlands; Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, the Netherlands
| | - Michele Mattia Viscusi
- Cardiovascular Center Aalst, OLV-Clinic, Aalst, Belgium; Department of Advanced Biomedical Sciences, University Federico II, Naples, Italy
| | | | | | - Thabo Mahendiran
- Cardiovascular Center Aalst, OLV-Clinic, Aalst, Belgium; Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Ruiko Seki
- Cardiovascular Center Aalst, OLV-Clinic, Aalst, Belgium
| | - Stephane Fournier
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Annemiek de Vos
- Department of Cardiology, Catharina Hospital, Eindhoven, the Netherlands; Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, the Netherlands
| | - Julien Adjedj
- Department of Cardiology, Institut Arnault Tzanck, Saint-Laurent-du-Var, France
| | - Emanuele Barbato
- Department of Clinical and Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Jeroen Sonck
- Cardiovascular Center Aalst, OLV-Clinic, Aalst, Belgium
| | - Peter Damman
- Department of Cardiology, Radboud University Medical Centre, Nijmegen, the Netherlands
| | - Thomas Keeble
- Essex Cardiothoracic Centre, Mid South Essex NHS Foundation Trust, Basildon, Essex, United Kingdom; Medical Technology Research Centre, Anglia Ruskin School of Medicine, Chelmsford, Essex, United Kingdom
| | - Samer Fawaz
- Essex Cardiothoracic Centre, Mid South Essex NHS Foundation Trust, Basildon, Essex, United Kingdom; Medical Technology Research Centre, Anglia Ruskin School of Medicine, Chelmsford, Essex, United Kingdom
| | - Alejandro Gutiérrez-Barrios
- Cardiology Department, Hospital Puerta del Mar, Cádiz, Spain; Instituto de Investigación e Innovación en Ciencias Biomédicas de Cádiz, Cádiz, Spain
| | - Valeria Paradies
- Department of Cardiology, Maasstad Hospital, Rotterdam, the Netherlands
| | | | - Morton J Kern
- Veteran's Administration Long Beach Health Care System, Long Beach, California, USA
| | - William F Fearon
- Department of Medicine, Division of Cardiology, Stanford Medical Center Palo Alto, Palo Alto, California, USA; VA Palo Alto Health Care System, Palo Alto, California, USA
| | - Carlos Collet
- Cardiovascular Center Aalst, OLV-Clinic, Aalst, Belgium
| | - Bernard De Bruyne
- Cardiovascular Center Aalst, OLV-Clinic, Aalst, Belgium; Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland.
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Fawaz S, Munhoz D, Mahendiran T, Gallinoro E, Mizukami T, Khan SA, Simpson RFG, Svanerud J, Cook CM, Davies JR, Karamasis GV, De Bruyne B, Keeble TR. Assessing the Impact of Prolonged Averaging of Coronary Continuous Thermodilution Traces. Diagnostics (Basel) 2024; 14:285. [PMID: 38337801 PMCID: PMC10855808 DOI: 10.3390/diagnostics14030285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 01/05/2024] [Accepted: 01/11/2024] [Indexed: 02/12/2024] Open
Abstract
Continuous Thermodilution is a novel method of quantifying coronary flow (Q) in mL/min. To account for variability of Q within the cardiac cycle, the trace is smoothened with a 2 s moving average filter. This can sometimes be ineffective due to significant heart rate variability, ventricular extrasystoles, and deep inspiration, resulting in a fluctuating temperature trace and ambiguity in the location of the "steady state". This study aims to assess whether a longer moving average filter would smoothen any fluctuations within the continuous thermodilution traces resulting in improved interpretability and reproducibility on a test-retest basis. Patients with ANOCA underwent repeat continuous thermodilution measurements. Analysis of traces were performed at averages of 10, 15, and 20 s to determine the maximum acceptable average. The maximum acceptable average was subsequently applied as a moving average filter and the traces were re-analysed to assess the practical consequences of a longer moving average. Reproducibility was then assessed and compared to a 2 s moving average. Of the averages tested, only 10 s met the criteria for acceptance. When the data was reanalysed with a 10 s moving average filter, there was no significant improvement in reproducibility, however, it resulted in a 12% diagnostic mismatch. Applying a longer moving average filter to continuous thermodilution data does not improve reproducibility. Furthermore, it results in a loss of fidelity on the traces, and a 12% diagnostic mismatch. Overall, current practice should be maintained.
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Affiliation(s)
- Samer Fawaz
- Essex Cardiothoracic Centre, Basildon Hospital, Nether Mayne, Basildon SS16 5NL, UK
- Medical Technology Research Centre (MTRC), Anglia-Ruskin University, Chelmsford CM1 1SQ, UK
| | - Daniel Munhoz
- Cardiovascular Center Aalst, OLV Clinic, 9300 Aalst, Belgium
- Department of Advanced Biomedical Sciences, University Federico II, 80138 Naples, Italy
| | - Thabo Mahendiran
- Cardiovascular Center Aalst, OLV Clinic, 9300 Aalst, Belgium
- Lausanne University Hospital, 1005 Lausanne, Switzerland
| | - Emanuele Gallinoro
- Cardiovascular Center Aalst, OLV Clinic, 9300 Aalst, Belgium
- Division of University Cardiology, IRCCS Ospedale Galeazzi Sant’Ambrogio, 20157 Milan, Italy
| | - Takuya Mizukami
- Cardiovascular Center Aalst, OLV Clinic, 9300 Aalst, Belgium
- Division of Clinical Pharmacology, Department of Pharmacology, Showa University, Tokyo 142-0064, Japan
| | - Sarosh A. Khan
- Essex Cardiothoracic Centre, Basildon Hospital, Nether Mayne, Basildon SS16 5NL, UK
- Medical Technology Research Centre (MTRC), Anglia-Ruskin University, Chelmsford CM1 1SQ, UK
| | - Rupert F. G. Simpson
- Essex Cardiothoracic Centre, Basildon Hospital, Nether Mayne, Basildon SS16 5NL, UK
- Medical Technology Research Centre (MTRC), Anglia-Ruskin University, Chelmsford CM1 1SQ, UK
| | | | - Christopher M. Cook
- Essex Cardiothoracic Centre, Basildon Hospital, Nether Mayne, Basildon SS16 5NL, UK
- Medical Technology Research Centre (MTRC), Anglia-Ruskin University, Chelmsford CM1 1SQ, UK
| | - John R. Davies
- Essex Cardiothoracic Centre, Basildon Hospital, Nether Mayne, Basildon SS16 5NL, UK
- Medical Technology Research Centre (MTRC), Anglia-Ruskin University, Chelmsford CM1 1SQ, UK
| | - Grigoris V. Karamasis
- School of Medicine, Attikon University Hospital, National and Kapodistrian University of Athens, 157 72 Athens, Greece
| | - Bernard De Bruyne
- Cardiovascular Center Aalst, OLV Clinic, 9300 Aalst, Belgium
- Lausanne University Hospital, 1005 Lausanne, Switzerland
| | - Thomas R. Keeble
- Essex Cardiothoracic Centre, Basildon Hospital, Nether Mayne, Basildon SS16 5NL, UK
- Medical Technology Research Centre (MTRC), Anglia-Ruskin University, Chelmsford CM1 1SQ, UK
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Seki R, Keulards DCJ, Gutiérrez-Barrios A, Fawaz S, Mahendiran T, Bertolone DT, Gallinoro E, Collet C, Keeble TR, Pijls NHJ, De Bruyne B. Safety of Continuous Coronary Thermodilution Measurements. JACC Cardiovasc Interv 2023; 16:2794-2796. [PMID: 38030367 DOI: 10.1016/j.jcin.2023.09.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 09/01/2023] [Accepted: 09/26/2023] [Indexed: 12/01/2023]
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Mahendiran T, Hoepli A, Foster-Witassek F, Rickli H, Roffi M, Eberli F, Pedrazzini G, Jeger R, Radovanovic D, Fournier S. Twenty-year trends in the prevalence of modifiable cardiovascular risk factors in young acute coronary syndrome patients hospitalized in Switzerland. Eur J Prev Cardiol 2023; 30:1504-1512. [PMID: 36929213 DOI: 10.1093/eurjpc/zwad077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 02/28/2023] [Accepted: 03/13/2023] [Indexed: 03/18/2023]
Abstract
AIMS Modifiable cardiovascular risk factors (RFs) play a key role in the development of coronary artery disease. We evaluated 20-year trends in RF prevalence among young adults hospitalized with acute coronary syndromes (ACS) in Switzerland. METHODS AND RESULTS Data were analysed from the Acute Myocardial Infarction in Switzerland (AMIS) Plus registry from 2000 to 2019. Young patients were defined as those aged <50 years. Among 58 028 ACS admissions, 7073 (14.1%) were young (median 45.6 years, IQR 42.0-48.0), of which 91.6% had at least one modifiable RF and 59.0% had at least two RFs. Smoking was the most prevalent RF (71.4%), followed by dyslipidaemia (57.3%), hypertension (35.9%), obesity (21.7%), and diabetes (10.1%). Compared with older patients, young patients were more likely to be obese (21.7% vs. 17.4%, P < 0.001) and active smokers (71.4% vs. 33.9%, P < 0.001). Among young patients, between 2000 and 2019, there was a significant increase in the prevalence of hypertension from 29.0% to 51.3% and obesity from 21.2% to 27.1% (both Ptrend < 0.001) but a significant decrease in active smoking from 72.5% to 62.5% (Ptrend = 0.02). There were no significant changes in the prevalence of diabetes (Ptrend = 0.32) or dyslipidaemia (Ptrend = 0.067). CONCLUSION Young ACS patients in Switzerland exhibit a high prevalence of RFs and are more likely than older patients to be obese and smokers. Between 2000 and 2019, RF prevalence either increased or remained stable, except for smoking which decreased but still affected approximately two-thirds of young patients in 2019. Public health initiatives targeting RFs in young adults in Switzerland are warranted.
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Affiliation(s)
- Thabo Mahendiran
- Department of Cardiology, Lausanne University Hospital, Rue du Bugnon 46, Lausanne 1011, Switzerland
| | - André Hoepli
- AMIS Plus Data Center Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
| | - Fabienne Foster-Witassek
- AMIS Plus Data Center Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
| | - Hans Rickli
- Department of Cardiology, Kantonsspital St. Gallen, St. Gallen, Switzerland
| | - Marco Roffi
- Department of Cardiology, Geneva University Hospitals, Geneva, Switzerland
| | - Franz Eberli
- Department of Cardiology, Stadtspital Zurich, Zurich, Switzerland
| | | | - Raban Jeger
- Department of Cardiology, Stadtspital Zurich, Zurich, Switzerland
| | - Dragana Radovanovic
- AMIS Plus Data Center Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
| | - Stephane Fournier
- Department of Cardiology, Lausanne University Hospital, Rue du Bugnon 46, Lausanne 1011, Switzerland
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Maurizi N, Skalidis I, Auberson D, Mahendiran T, Fournier S, Abbe E, Muller O. [Can smart devices and AI in cardiology improve clinical practice?]. Rev Med Suisse 2023; 19:1041-1046. [PMID: 37222645 DOI: 10.53738/revmed.2023.19.828.1041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Remote monitoring is becoming increasingly popular among healthcare professionals and patients for diagnosing and treating heart disease. Several smart devices connected to smartphones have been developed and validated in recent years, but their clinical use is still limited. Significant advances in the field of artificial intelligence (AI) are also revolutionizing several fields, yet the impact that these innovations could have on routine clinical practice is still unknown. We review the evidence and uses of the main smart devices currently available as well as the latest applications of AI in the field of cardiology, with the aim to ultimately evaluate the potential of this technology to transform modern clinical practice.
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Affiliation(s)
- Niccolo Maurizi
- Service de cardiologie, Centre hospitalier universitaire vaudois, 1011 Lausanne
| | - Ioannis Skalidis
- Service de cardiologie, Centre hospitalier universitaire vaudois, 1011 Lausanne
| | - Denise Auberson
- Service de cardiologie, Centre hospitalier universitaire vaudois, 1011 Lausanne
| | - Thabo Mahendiran
- Service de cardiologie, Centre hospitalier universitaire vaudois, 1011 Lausanne
- Laboratoire Mathematical Data Science, École polytechnique fédérale de Lausanne, 1015 Lausanne
| | - Stephane Fournier
- Service de cardiologie, Centre hospitalier universitaire vaudois, 1011 Lausanne
| | - Emmanuel Abbe
- Laboratoire Mathematical Data Science et LTS4, École polytechnique fédérale de Lausanne, 1015 Lausanne
| | - Olivier Muller
- Service de cardiologie, Centre hospitalier universitaire vaudois, 1011 Lausanne
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Skalidis I, Cagnina A, Luangphiphat W, Mahendiran T, Muller O, Abbe E, Fournier S. ChatGPT takes on the European Exam in Core Cardiology: an artificial intelligence success story? Eur Heart J Digit Health 2023; 4:279-281. [PMID: 37265864 PMCID: PMC10232281 DOI: 10.1093/ehjdh/ztad029] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 04/12/2023] [Accepted: 04/21/2023] [Indexed: 06/03/2023]
Abstract
Chat Generative Pre-trained Transformer (ChatGPT) is currently a trending topic worldwide triggering extensive debate about its predictive power, its potential uses, and its wider implications. Recent publications have demonstrated that ChatGPT can correctly answer questions from undergraduate exams such as the United States Medical Licensing Examination. We challenged it to answer questions from a more demanding, post-graduate exam-the European Exam in Core Cardiology (EECC), the final exam for the completion of specialty training in Cardiology in many countries. Our results demonstrate that ChatGPT succeeds in the EECC.
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Affiliation(s)
- Ioannis Skalidis
- Cardiology Department, University Hospital of Lausanne, Rue du Bugnon 46, 1011 Lausanne, Switzerland
| | - Aurelien Cagnina
- Cardiology Department, University Hospital of Lausanne, Rue du Bugnon 46, 1011 Lausanne, Switzerland
| | - Wongsakorn Luangphiphat
- Cardiology Department, University Hospital of Lausanne, Rue du Bugnon 46, 1011 Lausanne, Switzerland
| | - Thabo Mahendiran
- Cardiology Department, University Hospital of Lausanne, Rue du Bugnon 46, 1011 Lausanne, Switzerland
- Institute of Mathematics and School of Computer and Communication Sciences, EPFL, EPFL FSB SMA, Station 8,1015 Lausanne, Switzerland
| | - Olivier Muller
- Cardiology Department, University Hospital of Lausanne, Rue du Bugnon 46, 1011 Lausanne, Switzerland
| | - Emmanuel Abbe
- Institute of Mathematics and School of Computer and Communication Sciences, EPFL, EPFL FSB SMA, Station 8,1015 Lausanne, Switzerland
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Mahendiran T, Thanou D, Senouf O, Meier D, Dayer N, Aminfar F, Auberson D, Raita O, Frossard P, Pagnoni M, Cook S, De Bruyne B, Muller O, Abbé E, Fournier S. Deep learning-based prediction of future myocardial infarction using invasive coronary angiography: a feasibility study. Open Heart 2023; 10:openhrt-2022-002237. [PMID: 36596624 PMCID: PMC10098259 DOI: 10.1136/openhrt-2022-002237] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 12/14/2022] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Angiographic parameters can facilitate the risk stratification of coronary lesions but remain insufficient in the prediction of future myocardial infarction (MI). AIMS We compared the ability of humans, angiographic parameters and deep learning (DL) to predict the lesion that would be responsible for a future MI in a population of patients with non-significant CAD at baseline. METHODS We retrospectively included patients who underwent invasive coronary angiography (ICA) for MI, in whom a previous angiogram had been performed within 5 years. The ability of human visual assessment, diameter stenosis, area stenosis, quantitative flow ratio (QFR) and DL to predict the future culprit lesion (FCL) was compared. RESULTS In total, 746 cropped ICA images of FCL and non-culprit lesions (NCL) were analysed. Predictive models for each modality were developed in a training set before validation in a test set. DL exhibited the best predictive performance with an area under the curve of 0.81, compared with diameter stenosis (0.62, p=0.04), area stenosis (0.58, p=0.05) and QFR (0.67, p=0.13). DL exhibited a significant net reclassification improvement (NRI) compared with area stenosis (0.75, p=0.03) and QFR (0.95, p=0.01), and a positive nonsignificant NRI when compared with diameter stenosis. Among all models, DL demonstrated the highest accuracy (0.78) followed by QFR (0.70) and area stenosis (0.68). Predictions based on human visual assessment and diameter stenosis had the lowest accuracy (0.58). CONCLUSION In this feasibility study, DL outperformed human visual assessment and established angiographic parameters in the prediction of FCLs. Larger studies are now required to confirm this finding.
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Affiliation(s)
- Thabo Mahendiran
- Cardiology Department, Lausanne University Center Hospital, Lausanne, Switzerland.,Chair of Mathematical Data Science and LTS4 laboratory, EPFL, Lausanne, Switzerland
| | - Dorina Thanou
- Chair of Mathematical Data Science and LTS4 laboratory, EPFL, Lausanne, Switzerland
| | - Ortal Senouf
- Chair of Mathematical Data Science and LTS4 laboratory, EPFL, Lausanne, Switzerland
| | - David Meier
- Cardiology Department, Lausanne University Center Hospital, Lausanne, Switzerland
| | - Nicolas Dayer
- Cardiology Department, Lausanne University Center Hospital, Lausanne, Switzerland
| | - Fahrang Aminfar
- Cardiology Department, Lausanne University Center Hospital, Lausanne, Switzerland
| | - Denise Auberson
- Cardiology Department, Lausanne University Center Hospital, Lausanne, Switzerland
| | - Omar Raita
- Chair of Mathematical Data Science and LTS4 laboratory, EPFL, Lausanne, Switzerland
| | - Pascal Frossard
- LTS4 laboratory, School of Engineering, EPFL, Lausanne, Switzerland
| | - Mattia Pagnoni
- Cardiology Department, Lausanne University Center Hospital, Lausanne, Switzerland
| | - Stéphane Cook
- Cardiology Department, University and hospital Fribourg, Fribourg, Switzerland
| | | | - Olivier Muller
- Cardiology Department, Lausanne University Center Hospital, Lausanne, Switzerland
| | - Emmanuel Abbé
- Chair of Mathematical Data Science, Institute of Mathematics and School of Computer and Communication Sciences, EPFL, Lausanne, Switzerland
| | - Stephane Fournier
- Cardiology Department, Lausanne University Center Hospital, Lausanne, Switzerland
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Skalidis I, Meier D, De Bruyne B, Collet C, Sonck J, Mahendiran T, Rotzinger D, Qanadli SD, Eeckhout E, Muller O, Fournier S. Diagnostic performance of angiography-derived fractional flow reserve in patients with NSTEMI. Catheter Cardiovasc Interv 2022; 101:308-315. [PMID: 36579415 DOI: 10.1002/ccd.30526] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 10/26/2022] [Accepted: 12/04/2022] [Indexed: 12/30/2022]
Abstract
Noninvasive methods of estimating invasively measured fractional flow reserve (FFRinvasive ) are actively being explored, aiming to avoid the use of an invasive pressure wire and the administration of hyperemia-inducing drugs. Coronary angiography-derived FFR (FFRangio ) has already demonstrated its diagnostic performance in the context of stable coronary artery disease. However, its applicability in the context of non-ST-segment elevation myocardial infarction (NSTEMI) has yet to be established. We sought to determine the diagnostic performance of FFRangio exclusively in patients presenting with NSTEMI. We performed a prospective, single-center, single-arm, double-blinded study comparing FFR calculated by FFRangio to FFRinvasive in NSTEMI patients. FFRinvasive was measured in all angiographically intermediate lesions (30%-70% stenosis) and was then compared to FFRangio which was calculated at the same position, by a blinded operator. The primary endpoints were the sensitivity and specificity of FFRangio for predicting FFRinvasive using a cut-off value of ≤0.80. Among 100 NSTEMI patients who were screened, 46 patients with 60 vessels in total underwent FFRinvasive and were included in the study. The mean value of FFRinvasive was 0.83 ± 0.3 with 22 (36%) being ≤0.80 while the mean FFRangio was 0.82 ± 0.1 with 22 (36%) being ≤0.80. FFRangio exhibited a sensitivity of 95.5%, a specificity of 97.4%, and a diagnostic accuracy of 96.7%. FFRangio can precisely and noninvasively estimate FFRinvasive in acute coronary syndromes and may have a role in guiding treatment decisions related to angiographically intermediate coronary lesions in this context. WHAT IS KNOWN FFRangio has demonstrated its diagnostic performance in validation studies, as a noninvasive and cost-effective method in the context of stable coronary artery disease but its performance has never been exclusively evaluated in NSTEMI patients. WHAT IS NEW The present prospective single-center study demonstrates the excellent diagnostic performance of FFRangio in detecting functionally significant coronary artery stenosis in the setting of NSTEMI, providing more confidence in utilizing FFRangio in this population, avoiding the risk of an invasive pressure wire and the administration of hyperemia-inducing drugs. WHAT IS NEXT Future randomized trials evaluating FFRangio -guided treatment of coronary artery disease (stable or ACS) are now needed to definitively establish the role of FFRangio in the physiological assessment of coronary lesions.
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Affiliation(s)
- Ioannis Skalidis
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
- School of Medicine, University of Crete, Iraklio, Greece
| | - David Meier
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Bernard De Bruyne
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
- Cardiovascular Center Aalst, Aalst, Belgium
| | | | | | - Thabo Mahendiran
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
| | - David Rotzinger
- Department of Radiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Salah Dine Qanadli
- Department of Radiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Eric Eeckhout
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Olivier Muller
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Stephane Fournier
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
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Mahendiran T, Desgraz B, Antiochos P, Rubimbura V. Case Report: A First Case of Spontaneous Coronary Artery Dissection Potentially Associated With Scuba Diving. Front Cardiovasc Med 2022; 9:855449. [PMID: 35497983 PMCID: PMC9046929 DOI: 10.3389/fcvm.2022.855449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 03/10/2022] [Indexed: 11/13/2022] Open
Abstract
Background Scuba diving has rarely been associated with spontaneous arterial dissection. However, all documented cases have involved the cervicocranial arteries. Case summary We report the first case of spontaneous coronary artery dissection (SCAD) potentially associated with scuba diving in a 65-year-old female with no medical history or known cardiovascular risk factors. She presented with sudden-onset chest pain during her descent whilst scuba diving on holiday. An initial ECG revealed transient abnormalities, but due to normal initial blood tests, a reassuring echocardiogram, and the resolution of her symptoms, she was discharged from hospital without a clear diagnosis. During her subsequent presentation to our hospital 1 week later, electrocardiographic evidence of an inferior myocardial infarction (MI) was noted, with an echocardiogram revealing regional wall motion abnormalities of the left ventricular inferior wall. Coronary angiography revealed the presence of a SCAD of the posterior left ventricular artery, with cardiac magnetic resonance imaging confirming the presence of an inferior MI. As recommended in the majority of cases of SCAD, this case was managed conservatively with a favorable clinical course. Conclusion This is the first reported case of SCAD potentially associated with scuba diving. It highlights the importance of considering SCAD in patients presenting with sudden-onset chest pain during physical activity, especially in female patients (including older patients) with no cardiovascular risk factors. Furthermore, it serves as a reminder that symptoms during scuba diving are not always related to decompression illness.
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Affiliation(s)
- Thabo Mahendiran
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
- *Correspondence: Thabo Mahendiran
| | - Benoît Desgraz
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
- Underwater and Hyperbaric Medicine, Lausanne University Hospital, Lausanne, Switzerland
- Yverdon-les-Bains Hospital, Yverdon-les-Bains, Switzerland
| | | | - Vladimir Rubimbura
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
- Morges Hospital, Morges, Switzerland
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14
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Mahendiran T, Pascale P. Narrow complex tachycardia with discordant 12-lead RP intervals. J Electrocardiol 2022; 72:79-81. [DOI: 10.1016/j.jelectrocard.2022.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 03/07/2022] [Accepted: 03/07/2022] [Indexed: 10/18/2022]
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Andò G, Mahendiran T, Andò V. Carotid Implants to Treat Resistant Arterial Hypertension: A Paradigm for the Collaboration Between Clinicians and Interventionalists. JACC Cardiovasc Interv 2022; 15:333-335. [PMID: 35144790 DOI: 10.1016/j.jcin.2021.12.045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 12/27/2021] [Indexed: 11/30/2022]
Affiliation(s)
- Giuseppe Andò
- Department of Clinical and Experimental Medicine, Section of Cardiology, University of Messina, and Azienda Ospedaliera Universitaria Policlinico "Gaetano Martino," Messina, Italy.
| | - Thabo Mahendiran
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Victoria Andò
- Department of General Internal Medicine, Lausanne University Hospital, Lausanne, Switzerland
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Lu H, Roux O, Fournier S, Aur S, Hullin R, Antiochos P, Pucci L, Monney P, Schwitter J, Le Bloa M, Domenichini G, Pascale P, Pruvot E, Mahendiran T, Bouchardy J, Rutz T, Duchini M, Muller O. [Cardiology]. Rev Med Suisse 2022; 18:144-151. [PMID: 35107886 DOI: 10.53738/revmed.2022.18.767.144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Significant advances have been made in 2021 in the areas of interventional cardiology, heart failure, cardiac imaging, electrophysiology and congenital heart disease. In addition to improving the screening, diagnosis and management of many heart diseases, these advances will change our daily practice. Moreover, the European Society of Cardiology has updated its guidelines on heart failure, valve disease, cardiac pacing and cardiovascular disease prevention. As in previous years, members of the Cardiology division of Lausanne University Hospital (CHUV) came together to select and present to you the papers that they considered to be the most important of the past year.
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Affiliation(s)
- Henri Lu
- Service de cardiologie, Centre hospitalier universitaire vaudois et Université de Lausanne, 1011 Lausanne
| | - Olivier Roux
- Service de cardiologie, Centre hospitalier universitaire vaudois et Université de Lausanne, 1011 Lausanne
| | - Stephane Fournier
- Service de cardiologie, Centre hospitalier universitaire vaudois et Université de Lausanne, 1011 Lausanne
| | - Stefania Aur
- Service de cardiologie, Centre hospitalier universitaire vaudois et Université de Lausanne, 1011 Lausanne
| | - Roger Hullin
- Service de cardiologie, Centre hospitalier universitaire vaudois et Université de Lausanne, 1011 Lausanne
| | - Panagiotis Antiochos
- Service de cardiologie, Centre hospitalier universitaire vaudois et Université de Lausanne, 1011 Lausanne
| | - Lorenzo Pucci
- Service de cardiologie, Centre hospitalier universitaire vaudois et Université de Lausanne, 1011 Lausanne
| | - Pierre Monney
- Service de cardiologie, Centre hospitalier universitaire vaudois et Université de Lausanne, 1011 Lausanne
| | - Juerg Schwitter
- Service de cardiologie, Centre hospitalier universitaire vaudois et Université de Lausanne, 1011 Lausanne
| | - Mathieu Le Bloa
- Service de cardiologie, Centre hospitalier universitaire vaudois et Université de Lausanne, 1011 Lausanne
| | - Giulia Domenichini
- Service de cardiologie, Centre hospitalier universitaire vaudois et Université de Lausanne, 1011 Lausanne
| | - Patrizio Pascale
- Service de cardiologie, Centre hospitalier universitaire vaudois et Université de Lausanne, 1011 Lausanne
| | - Etienne Pruvot
- Service de cardiologie, Centre hospitalier universitaire vaudois et Université de Lausanne, 1011 Lausanne
| | - Thabo Mahendiran
- Service de cardiologie, Centre hospitalier universitaire vaudois et Université de Lausanne, 1011 Lausanne
| | - Judith Bouchardy
- Service de cardiologie, Centre hospitalier universitaire vaudois et Université de Lausanne, 1011 Lausanne
| | - Tobias Rutz
- Service de cardiologie, Centre hospitalier universitaire vaudois et Université de Lausanne, 1011 Lausanne
| | - Mattia Duchini
- Service de cardiologie, Centre hospitalier universitaire vaudois et Université de Lausanne, 1011 Lausanne
| | - Olivier Muller
- Service de cardiologie, Centre hospitalier universitaire vaudois et Université de Lausanne, 1011 Lausanne
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Mahendiran T, Meier D, Fournier S, Muller O. PCI in the management of chronic coronary syndromes after the ISCHEMIA Study. Cardiovasc Med 2021. [DOI: 10.4414/cvm.2021.02189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
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Fournier S, Mahendiran T, Radovanovic D, Pedrazzini G, Eberli F, Roffi M, Kobza R, Rickli H. The impact of the COVID-19 pandemic on the management and outcomes of STEMI patients in Switzerland. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
The COVID-19 pandemic has placed unprecedented strain on healthcare systems around the world, with potential repercussions on the quality of care of patients with other diseases. From a cardiological perspective, there have been concerns that the pandemic may have impacted the management of the most acute cardiovascular conditions.
Purpose
We evaluated the impact of the COVID-19 pandemic on the management of ST-elevation myocardial infarction (STEMI) in Switzerland by assessing a range of quality-of-care metrics during the first year of the pandemic, as compared with the preceding year.
Methods
Data on STEMI patients hospitalised in Switzerland from 1st January 2019 to 31st December 2020 were obtained from the Acute Myocardial Infarction in Switzerland (AMIS) registry. Symptom-to-first-medical-contact (symptom-to-FMC) time, symptom-to-door time, and door-to-balloon (DTB) time were compared between 2020 and 2019 in an analysis by year and by month. Additionally, rates of in-hospital all-cause mortality and in-hospital major adverse cardiovascular events (MACE: all-cause mortality, MI, stroke) were compared.
Results
Data on 2192 STEMI patients were available. Compared with the preceding 12 months, the first year of the pandemic was not associated with a significant change in median symptom-to-FMC time (2020: 90 minutes vs 2019: 95 minutes, p=0.32) or median symptom-to-door time (2020: 145 min vs 2019: 157 min, p=0.51). In 2020, February (start of the pandemic) and March (start of national lockdown) were associated with increased DTB times as compared with the same months of 2019 (+7 minutes, +10 minutes, respectively). However, overall median door-to-balloon times remained stable (2020: 40 min vs 2019: 39 min, p=0.06). Furthermore, there was no significant difference in the proportion of patients undergoing percutaneous coronary intervention (2020: 95.6% vs 2019: 95.1%, p=0.54). Finally, there were no significant differences in median length of stay (2020: 4 days vs 2019: 157 min, p=0.51), in-hospital all-cause mortality (2020: 4.9% vs. 2019: 4.2%, p=0.41) or MACE (2020: 6.2% vs. 2019: 5.6%, p=0.52).
Conclusions
Although there are some limitations associated with the present study inherent to its retrospective observational design (for instance, a potentially important number of late comers may not have been included in the registry), the data suggest that despite the impact of COVID-19 on the healthcare system in Switzerland in 2020, STEMI management as defined by a range of quality-of-care metrics remained effective and efficient.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- S Fournier
- University Hospital Centre Vaudois (CHUV), Lausanne, Switzerland
| | - T Mahendiran
- University Hospital Centre Vaudois (CHUV), Lausanne, Switzerland
| | - D Radovanovic
- University of Zurich, AMIS plus Data Center, Zurich, Switzerland
| | | | - F Eberli
- Triemli Hospital, Zurich, Switzerland
| | - M Roffi
- Geneva University Hospitals, Department of Cardiology, Geneva, Switzerland
| | - R Kobza
- Luzerner Kantonsspital, Lucerne, Switzerland
| | - H Rickli
- Kantonsspital St. Gallen, St Gallen, Switzerland
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Mahendiran T, Klingenberg R, Nanchen D, Gencer B, Meier D, Räber L, Carballo D, Matter CM, Lüscher TF, Mach F, Rodondi N, Muller O, Fournier S. CCN family member 1 (CCN1) is an early marker of infarct size and left ventricular dysfunction in STEMI patients. Atherosclerosis 2021; 335:77-83. [PMID: 34597881 DOI: 10.1016/j.atherosclerosis.2021.09.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 08/16/2021] [Accepted: 09/16/2021] [Indexed: 11/18/2022]
Abstract
BACKGROUND AND AIMS CCN family member 1 (CCN1) has recently been proposed as a novel biomarker of myocardial injury, improving prediction of 30-day and one-year mortality following acute coronary syndromes. Among ST-elevation myocardial infarction (STEMI) patients, we evaluated the utility of CCN1 measured immediately before primary percutaneous coronary intervention (PPCI) as a predictor of two earlier endpoints: final myocardial infarct size and post-infarction left ventricular ejection fraction (LVEF). Furthermore, we evaluated the impact of CCN1 on the discriminatory power of the CADILLAC score. METHODS STEMI patients were obtained from the SPUM-ACS cohort. Serum CCN1 was measured prior to PPCI. Linear regression assessed the association between CCN1, peak creatinine kinase (CK), and post-infarction LVEF. Cox models assessed an association between CCN1 and 30-day all-cause mortality. RESULTS CCN1 was measured in 989 patients with a median value of 706.2 ng/l (IQR 434.3-1319.6). A significant correlation between CCN1, myocardial infarct size (peak CK) and LVEF was observed in univariate and multivariate analysis (both p < 0.001). Even among patients with normal classical cardiac biomarker levels at the time of PPCI, CCN1 correlated significantly with final infarct size. CCN1 significantly improved prediction of 30-day all-cause mortality by the CADILLAC score (C-index 0.864, likelihood-ratio chi-square test statistic 6.331, p = 0.012; IDI 0.026, p= 0.050). CONCLUSIONS Compared with classical cardiac biomarkers, CCN1 is potentially the earliest predictor of final myocardial infarct size and post-infarction LVEF. CCN1 improved the discriminatory capacity of the CADILLAC score suggesting a potential role in the very-early risk stratification of STEMI patients.
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Affiliation(s)
- Thabo Mahendiran
- Department of Cardiology, Lausanne University Center Hospital, Lausanne, Switzerland
| | | | - David Nanchen
- Center for Primary Care and Public Health (Unisanté), University of Lausanne, Lausanne, Switzerland
| | - Baris Gencer
- Department of Cardiology, Geneva University Hospitals, Geneva, Switzerland
| | - David Meier
- Department of Cardiology, Lausanne University Center Hospital, Lausanne, Switzerland
| | - Lorenz Räber
- Department of Cardiology, University Hospital of Zurich, Zurich, Switzerland
| | - David Carballo
- Center for Primary Care and Public Health (Unisanté), University of Lausanne, Lausanne, Switzerland
| | - Christian M Matter
- Department of Cardiology, University Hospital of Zurich, Zurich, Switzerland
| | - Thomas F Lüscher
- Center for Molecular Cardiology, University of Zurich, Zurich, Switzerland; Imperial College and Royal Brompton & Harefield Hospitals, London, UK
| | - François Mach
- Center for Primary Care and Public Health (Unisanté), University of Lausanne, Lausanne, Switzerland
| | - Nicolas Rodondi
- Department of General Internal Medicine, Inselspital, Bern University Hospital, University of Bern, Switzerland; Institute of Primary Health Care (BIHAM), University of Bern, Bern, Switzerland
| | - Olivier Muller
- Department of Cardiology, Lausanne University Center Hospital, Lausanne, Switzerland
| | - Stephane Fournier
- Department of Cardiology, Lausanne University Center Hospital, Lausanne, Switzerland.
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Affiliation(s)
- David Meier
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Thabo Mahendiran
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Stephane Fournier
- Department of Cardiology, Lausanne University Hospital, Rue du Bugnon 46, 1011 Lausanne, Switzerland
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21
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Mahendiran T, Herrera-Siklody C, Pascale P. Progressive PR Prolongation in an Asymptomatic Man. JAMA Intern Med 2021; 181:691-692. [PMID: 33646275 DOI: 10.1001/jamainternmed.2020.9216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Thabo Mahendiran
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
| | | | - Patrizio Pascale
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
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22
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Pagnoni M, Meier D, Candreva A, Maillard L, Adjedj J, Collet C, Mahendiran T, Cook S, Mujcinovic A, Dupré M, Rubimbura V, Roguelov C, Eeckhout E, De Bruyne B, Muller O, Fournier S. Future culprit detection based on angiography-derived FFR. Catheter Cardiovasc Interv 2021; 98:E388-E394. [PMID: 33913606 DOI: 10.1002/ccd.29736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 03/23/2021] [Accepted: 04/12/2021] [Indexed: 11/07/2022]
Abstract
OBJECTIVES We sought to characterize the hemodynamic impact of mild coronary artery disease (CAD) using quantitative flow ratio (QFR, an angiography-derived fractional flow reserve [FFR]) in a population of patients with only non-significant CAD at baseline that subsequently experienced a myocardial infarction (MI). BACKGROUND The discriminatory value of FFR in patients with mild CAD remains imperfect. METHODS We retrospectively included patients who underwent invasive coronary angiography for an MI, in whom another angiogram had been performed within the previous 5 years. Three-dimensional quantitative coronary angiography, QFR, and lesion length analysis were conducted on lesions responsible for the MI (future culprit lesions, [FCL]) as well as on control lesions (non-culprit lesions, [NCL]). RESULTS Eighty-three FCL and 117 NCL were analyzed in 83 patients: FCL were more severe (median % diameter of stenosis [DS] 39.1% [29.8; 45.7] vs. 29.8% [25.0; 37.2], p < .001), had lower QFR values (0.94 [0.86; 0.98] vs. 0.98 [0.96; 1.00], p < .001) and tended to be longer (15.2 mm [10.0; 27.3] vs. 12.7 mm [9.3; 22.4], p = .070) than NCL. In lesions with an interval < 2 years between baseline angiography and MI, the difference in QFR was more pronounced compared to the lesions with a longer interval (FCL: 0.92 [0.85; 0.97] vs. NCL: 0.98 [0.94; 1.00], p < .001 and FCL: 0.96 [0.88; 1.00] vs. NCL: 0.98 [0.96;1.00], p = .006 respectively) CONCLUSION: Mild coronary stenoses that are subsequently responsible for an MI (FCL) exhibit a higher DS and lower QFR years before the event. Furthermore, FCL with a lower QFR at baseline appear to lead earlier to MI.
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Affiliation(s)
- Mattia Pagnoni
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
| | - David Meier
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
| | | | - Luc Maillard
- Department of Cardiology, GCS ES Axium Rambot, Aix en Provence, France
| | - Julien Adjedj
- Department of Cardiology, Arnault Tzank Institute, Saint Laurent Du Var, France
| | - Carlos Collet
- Cardiovascular Center, OLV Ziekenhuis, Aalst, Belgium
| | - Thabo Mahendiran
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Stephane Cook
- Department of Cardiology, HFR Fribourg, Fribourg, Switzerland
| | - Alma Mujcinovic
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Marion Dupré
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Vladimir Rubimbura
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Christan Roguelov
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Eric Eeckhout
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Bernard De Bruyne
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland.,Cardiovascular Center, OLV Ziekenhuis, Aalst, Belgium
| | - Olivier Muller
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Stephane Fournier
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland.,Division of Cardiology, Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
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23
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Meier D, Depierre A, Topolsky A, Roguelov C, Dupré M, Rubimbura V, Eeckhout E, Qanadli SD, Muller O, Mahendiran T, Rotzinger D, Fournier S. Computed Tomography Angiography for the Diagnosis of Coronary Artery Disease Among Patients Undergoing Transcatheter Aortic Valve Implantation. J Cardiovasc Transl Res 2021; 14:894-901. [PMID: 33543417 PMCID: PMC8575747 DOI: 10.1007/s12265-021-10099-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Accepted: 01/05/2021] [Indexed: 11/05/2022]
Abstract
Background Computed tomography angiography (CTA) is used to plan TAVI procedures. We investigated the performance of pre-TAVI CTA for excluding coronary artery disease (CAD). Methods In total 127 patients were included. CTA images were analyzed for the presence of ≥ 50% (significant CAD) and ≥ 70% (severe CAD) diameter stenoses in proximal coronary arteries. Results were compared with invasive coronary angiography (ICA) at vessel and patient levels. Primary endpoint was the negative predictive value (NPV) of CTA for the presence of CAD. Results A total of 342 vessels were analyzable. NPV of CTA was 97.5% for significant CAD and 96.3% for severe CAD. Positive predictive value and accuracy were 44.8% and 87.1% for significant CAD and 56.3% and 94.4% for severe CAD. At patient level, NPV for significant CAD was 88.6%. Conclusion Pre-TAVI CTA shows good performance for ruling out CAD and could be used as a gatekeeper for ICA in selected patients. Graphical abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1007/s12265-021-10099-8.
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Affiliation(s)
- David Meier
- Department of Cardiology, Lausanne University Hospital, Rue du Bugnon 46, 1011, Lausanne, Switzerland.,Faculty of Biology and Medicine, Lausanne University, Lausanne, Switzerland
| | - Arnaud Depierre
- Department of Cardiology, Lausanne University Hospital, Rue du Bugnon 46, 1011, Lausanne, Switzerland.,Faculty of Biology and Medicine, Lausanne University, Lausanne, Switzerland
| | - Antoine Topolsky
- Faculty of Biology and Medicine, Lausanne University, Lausanne, Switzerland.,Department of Radiology, Lausanne University Hospital, Rue du Bugnon 46, 1011, Lausanne, Switzerland
| | - Christan Roguelov
- Department of Cardiology, Lausanne University Hospital, Rue du Bugnon 46, 1011, Lausanne, Switzerland.,Faculty of Biology and Medicine, Lausanne University, Lausanne, Switzerland
| | - Marion Dupré
- Department of Cardiology, Lausanne University Hospital, Rue du Bugnon 46, 1011, Lausanne, Switzerland.,Faculty of Biology and Medicine, Lausanne University, Lausanne, Switzerland
| | - Vladimir Rubimbura
- Department of Cardiology, Lausanne University Hospital, Rue du Bugnon 46, 1011, Lausanne, Switzerland.,Faculty of Biology and Medicine, Lausanne University, Lausanne, Switzerland
| | - Eric Eeckhout
- Department of Cardiology, Lausanne University Hospital, Rue du Bugnon 46, 1011, Lausanne, Switzerland.,Faculty of Biology and Medicine, Lausanne University, Lausanne, Switzerland
| | - Salah Dine Qanadli
- Faculty of Biology and Medicine, Lausanne University, Lausanne, Switzerland.,Department of Radiology, Lausanne University Hospital, Rue du Bugnon 46, 1011, Lausanne, Switzerland
| | - Olivier Muller
- Department of Cardiology, Lausanne University Hospital, Rue du Bugnon 46, 1011, Lausanne, Switzerland.,Faculty of Biology and Medicine, Lausanne University, Lausanne, Switzerland
| | - Thabo Mahendiran
- Department of Cardiology, Lausanne University Hospital, Rue du Bugnon 46, 1011, Lausanne, Switzerland.,Faculty of Biology and Medicine, Lausanne University, Lausanne, Switzerland
| | - David Rotzinger
- Faculty of Biology and Medicine, Lausanne University, Lausanne, Switzerland. .,Department of Radiology, Lausanne University Hospital, Rue du Bugnon 46, 1011, Lausanne, Switzerland.
| | - Stephane Fournier
- Department of Cardiology, Lausanne University Hospital, Rue du Bugnon 46, 1011, Lausanne, Switzerland. .,Faculty of Biology and Medicine, Lausanne University, Lausanne, Switzerland. .,Division of Cardiology, Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy.
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24
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Abstract
The recently presented ISCHEMIA trial found that, among patients with stable coronary artery disease (CAD) and proven moderate/severe ischemia, an invasive strategy failed to show a significant reduction in cardiovascular events compared to medical therapy alone. We aimed to assess the impact of ISCHEMIA on the daily practice of a public university hospital. We performed a retrospective analysis of the last 1,000 consecutive percutaneous coronary interventions (PCIs) performed in our center and applied the ISCHEMIA exclusion criteria to this population in order to estimate the proportion of these patients that would have been excluded from the trial. Interestingly, only 91 patients (9.1%) did not have any ISCHEMIA exclusion criteria, notably due to the high proportion of acute coronary syndrome (ACS). However, in a sub-analysis based exclusively on patients with stable CAD, 71.6% of the patients undergoing PCI would have been excluded from ISCHEMIA due to the presence of at least one exclusion criteria. In conclusion, in this retrospective analysis of 1,000 PCIs performed in a public university hospital, the majority of PCIs were performed in patients that would have had at least one exclusion criterion from ISCHEMIA. These results suggest that the impact of ISCHEMIA on the real-world practice of a public university hospital might be limited.
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Affiliation(s)
- David Meier
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Thabo Mahendiran
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Stephane Fournier
- Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland.,Division of Cardiology, Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
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25
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Meier D, Domenichini G, Mahendiran T, Pagnoni M, Monney P, Pruvot E, Muller O, Fournier S. [Not Available]. Rev Med Suisse 2020; 16:930-932. [PMID: 32374539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Affiliation(s)
- David Meier
- Service de cardiologie, Département cœur et vaisseaux, CHUV et Université de Lausanne, 1011 Lausanne
| | - Giulia Domenichini
- Service de cardiologie, Département cœur et vaisseaux, CHUV et Université de Lausanne, 1011 Lausanne
| | - Thabo Mahendiran
- Service de cardiologie, Département cœur et vaisseaux, CHUV et Université de Lausanne, 1011 Lausanne
| | - Mattia Pagnoni
- Service de cardiologie, Département cœur et vaisseaux, CHUV et Université de Lausanne, 1011 Lausanne
| | - Pierre Monney
- Service de cardiologie, Département cœur et vaisseaux, CHUV et Université de Lausanne, 1011 Lausanne
| | - Etienne Pruvot
- Service de cardiologie, Département cœur et vaisseaux, CHUV et Université de Lausanne, 1011 Lausanne
| | - Olivier Muller
- Service de cardiologie, Département cœur et vaisseaux, CHUV et Université de Lausanne, 1011 Lausanne
| | - Stéphane Fournier
- Service de cardiologie, Département cœur et vaisseaux, CHUV et Université de Lausanne, 1011 Lausanne
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26
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Mahendiran T, Nanchen D, Gencer B, Meier D, Klingenberg R, Räber L, Carballo D, Matter CM, Lüscher TF, Windecker S, Mach F, Rodondi N, Muller O, Fournier S. Prognosis of Patients with Chronic and Hospital-Acquired Anaemia After Acute Coronary Syndromes. J Cardiovasc Transl Res 2019; 13:618-628. [DOI: 10.1007/s12265-019-09934-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Accepted: 11/11/2019] [Indexed: 01/05/2023]
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27
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Mahendiran T, Nanchen D, Meier D, Gencer B, Klingenberg R, Raber L, Carballo D, Matter C, Luscher T, Windecker S, Mach F, Rodondi N, Muller O, Fournier S. 464Optimal timing of invasive coronary angiography following NSTEMI. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Current guidelines recommend angiography within 24 hours of hospitalisation for patients with non-ST elevation myocardial infarction (NSTEMI). The recent VERDICT study found that angiography within 12 hours of hospitalisation was associated with improved cardiovascular outcomes among high-risk patients. We aimed to obtain a real-world perspective of the impact of angiography timing on one-year outcomes of patients admitted with NSTEMI.
Methods
Data was obtained from the SPUM-ACS registry, a cohort of consecutive patients hospitalised with acute coronary syndromes in four university hospitals in Switzerland between 2009 and 2017. Patients without a door-to-catheter (DTC) time and those with life-threatening features were excluded. Cox proportional hazards models evaluated the impact of DTC time on the primary endpoint, defined as one-year major adverse cardiovascular events (MACE: cardiovascular mortality, myocardial infarction, stroke), and on one-year all-cause mortality.
Results
Of 2,672 NSTEMI patients, 1,832 met the inclusion criteria. Among them, 1,464 patients underwent angiography within 12 hours of admission (12h group) while 368 patients underwent angiography between 12 and 24 hours (12–24h group). After 2:1 propensity score matching, 736 patients from the 12h group and 368 patients from the 12–24h group were deemed equivalent in terms of main baseline clinical characteristics. Multiple logistic regression identified admission out-of-hours (night or weekend) as the most significant factor associated with delayed angiography. Cox models found no significant association between early angiography and one-year MACE (12h group: n=57 (7.7%) vs. 12–24h group: n=27 (7.3%), HR: 1.050, 95% CI 0.637- 1.733, p=0.847), or one-year all-cause mortality (12h group: n=25 (3.4%) vs. 12–24h group: n=17 (4.6%), HR: 1.514, 95% CI 0.774- 2.962, p=0.225) (Figure 1A). After stratification based on GRACE score (>140 vs. ≤140), there was no significant difference in one-year MACE or one-year all-cause mortality in the 12h group compared with the 12–24h group (p for interaction=0.601 and 0.463, respectively) (Figure 1A + 1B).
Figure 1
Conclusion
In an unselected real-world cohort of NSTEMI patients, angiography within 12 hours of hospitalisation was not associated with improved one-year outcomes when compared with angiography between 12 and 24 hours, even among patients with an elevated GRACE score.
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Affiliation(s)
- T Mahendiran
- University Hospital Centre Vaudois (CHUV), Department of Cardiology, Lausanne, Switzerland
| | - D Nanchen
- University of Lausanne, Department of Ambulatory Care and Community Medicine, Lausanne, Switzerland
| | - D Meier
- University Hospital Centre Vaudois (CHUV), Department of Cardiology, Lausanne, Switzerland
| | - B Gencer
- Geneva University Hospitals, Department of Cardiology, Geneva, Switzerland
| | - R Klingenberg
- Kerckhoff Clinic, Department of Cardiology, Bad Nauheim, Germany
| | - L Raber
- University Hospital Zurich, Department of Cardiology, Zurich, Switzerland
| | - D Carballo
- Geneva University Hospitals, Department of Cardiology, Geneva, Switzerland
| | - C Matter
- University Hospital Zurich, Department of Cardiology, Zurich, Switzerland
| | - T Luscher
- University Hospital Zurich, Department of Cardiology, Zurich, Switzerland
| | - S Windecker
- Bern University Hospital, Department of Cardiology, Bern, Switzerland
| | - F Mach
- Geneva University Hospitals, Department of Cardiology, Geneva, Switzerland
| | - N Rodondi
- Bern University Hospital, Department of General Internal Medicine, Bern, Switzerland
| | - O Muller
- University Hospital Centre Vaudois (CHUV), Department of Cardiology, Lausanne, Switzerland
| | - S Fournier
- University Hospital Centre Vaudois (CHUV), Department of Cardiology, Lausanne, Switzerland
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Mahendiran T, Doolub G, Nisbet A. Fever in a returning traveller: visceral leishmaniasis triggering haemophagocytic lymphohistiocytosis. BMJ Case Rep 2018; 2018:bcr-2018-224775. [PMID: 30131414 DOI: 10.1136/bcr-2018-224775] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
We present the case of a 23-year-old student admitted with fever, night sweats and splenomegaly. These non-specific signs and symptoms posed a diagnostic challenge which was further complicated by a history of recent foreign travel. The range of potential diagnoses required a variety of investigations in order to reach the final diagnosis. The incidental finding of an incompetent bicuspid aortic valve and an inflamed gallbladder further clouded the diagnostic process. Despite treatment with broad spectrum antibiotics, the patient continued to deteriorate. Serological testing finally provided a diagnosis of visceral leishmaniasis. The patient subsequently developed haemophagocytic lymphohistiocytosis, a life-threatening immune hyperactivity state that very rarely complicates leishmaniasis infection. With the use of amphotericin B and high-dose steroids, the patient made an excellent recovery.
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Affiliation(s)
- Thabo Mahendiran
- Department of Cardiology, University Hospitals Bristol, Bristol, UK
| | - Gemina Doolub
- Department of Cardiology, University Hospitals Bristol, Bristol, UK
| | - Ashley Nisbet
- Department of Cardiology, University Hospitals Bristol, Bristol, UK
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29
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Mahendiran T, McKenzie D, Newton J, Rowe R, Clarkson J, Dayer M. 100 Re-introduction of Pre-hospital Thrombolysis could Improve STEMI Outcomes when Primary Percutaneous Coronary Intervention is Delayed. Heart 2016. [DOI: 10.1136/heartjnl-2016-309890.100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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30
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Vincent M, Mahendiran T. Improvement of fluid balance monitoring through education and rationalisation. BMJ Qual Improv Rep 2015; 4:bmjquality_uu209885.w4087. [PMID: 26893885 PMCID: PMC4752718 DOI: 10.1136/bmjquality.u209885.w4087] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Revised: 11/26/2015] [Accepted: 12/08/2015] [Indexed: 11/03/2022]
Abstract
Fluid input/output charts in hospital inpatients are a valuable source of information for doctors reviewing intravenous fluid prescription, but are notorious for being incomplete and inaccurate. Lack of awareness of the importance of fluid balance amongst nursing staff and an excess of unnecessary monitoring are two factors contributing to the problem. We conducted a quality improvement project on the respiratory ward in a large district general hospital aiming to specifically address these two factors. Pre-intervention audit showed that only 53% of input/output monitoring was clinically indicated, with an average chart completion of 50%. Using e-Learning and verbal presentation to raise awareness around fluid balance, we implemented a new system whereby daily medical review of charts lead to rationalisation of monitoring. Post-intervention audit showed a 93% reduction in unnecessary monitoring, with corresponding increases in completion (40%) and accuracy (48%) of remaining charts. In conclusion, education has enabled a culture change on the ward that has drastically increased the quality of fluid balance monitoring.
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Affiliation(s)
- Masaki Vincent
- Musgrove Park Hospital, Taunton and Somerset Trust, United Kingdom
| | - Thabo Mahendiran
- Musgrove Park Hospital, Taunton and Somerset Trust, United Kingdom
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31
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Mahendiran T, Gosling O, Newton J, Giblett D, McKenzie D, Dayer M. 31 The New National Institute for Health and Care Excellence (NICE) TA314 Guidelines may have a Significant Impact on Implantable Cardioverter Defibrillator (ICD) and Cardiac Resynchronisation Therapy (CRT) Implant Rates in District General Hospitals. Heart 2015. [DOI: 10.1136/heartjnl-2015-308066.31] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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32
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Chawrai SR, Williamson NR, Mahendiran T, Salmond GPC, Leeper FJ. Characterisation of PigC and HapC, the prodigiosin synthetases from Serratia sp. and Hahella chejuensis with potential for biocatalytic production of anticancer agents. Chem Sci 2012. [DOI: 10.1039/c1sc00588j] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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33
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Cochemé HM, Kelso GF, James AM, Ross MF, Trnka J, Mahendiran T, Asin-Cayuela J, Blaikie FH, Manas ARB, Porteous CM, Adlam VJ, Smith RAJ, Murphy MP. Mitochondrial targeting of quinones: therapeutic implications. Mitochondrion 2007; 7 Suppl:S94-102. [PMID: 17449335 DOI: 10.1016/j.mito.2007.02.007] [Citation(s) in RCA: 99] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2006] [Revised: 02/12/2007] [Accepted: 02/19/2007] [Indexed: 01/11/2023]
Abstract
Mitochondrial oxidative damage contributes to a range of degenerative diseases. Ubiquinones have been shown to protect mitochondria from oxidative damage, but only a small proportion of externally administered ubiquinone is taken up by mitochondria. Conjugation of the lipophilic triphenylphosphonium cation to a ubiquinone moiety has produced a compound, MitoQ, which accumulates selectively into mitochondria. MitoQ passes easily through all biological membranes and, because of its positive charge, is accumulated several hundred-fold within mitochondria driven by the mitochondrial membrane potential. MitoQ protects mitochondria against oxidative damage in vitro and following oral delivery, and may therefore form the basis for mitochondria-protective therapies.
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Affiliation(s)
- Helena M Cochemé
- MRC Dunn Human Nutrition Unit, Wellcome Trust/MRC Building, Hills Road, Cambridge CB2 2XY, UK
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