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Cheskes S, Drennan IR, Turner L, Pandit SV, Dorian P. The impact of alternate defibrillation strategies on shock-refractory and recurrent ventricular fibrillation: A secondary analysis of the DOSE VF cluster randomized controlled trial. Resuscitation 2024; 198:110186. [PMID: 38522736 DOI: 10.1016/j.resuscitation.2024.110186] [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] [Received: 01/29/2024] [Revised: 03/10/2024] [Accepted: 03/15/2024] [Indexed: 03/26/2024]
Abstract
BACKGROUND The DOSE VF randomized controlled trial (RCT) employed a pragmatic definition of refractory ventricular fibrillation (VF after three successive shocks). However, it remains unclear whether the underlying rhythm during the first three shocks was shock-refractory or recurrent VF. OBJECTIVE To explore the relationship between alternate defibrillation strategies employed during the DOSE VF RCT and the type of VF, either shock-refractory VF or recurrent VF, on patient outcomes. METHODS We performed a secondary analysis of the DOSE VF RCT. We categorized cases as shock-refractory or recurrent VF based on pre-randomization shocks (shocks 1-3). We then analyzed all subsequent (post-randomization) shocks to assess the impact of standard, vector change (VC) or double sequential external defibrillation (DSED) shocks on clinical outcomes employing logistic regression adjusted for Utstein variables, antiarrhythmics, and epinephrine. RESULTS We included 345 patients; 60 (17%) shock-refractory VF, and 285 (83%) recurrent VF. Patients in recurrent VF had greater survival than shock-refractory VF (OR: 2.76 95% CI [1.04, 7.27]). DSED was superior to standard defibrillation for survival overall, and for patients with shock-refractory VF (28.6% vs 0%, p = 0.041) but not for those in recurrent VF. DSED was superior to standard defibrillation for return of spontaneous circulation (ROSC) and neurologic survival for shock-refractory and recurrent VF. VC defibrillation was not superior for survival or ROSC overall, for shock-refractory, or recurrent VF groups, but was superior for VF termination across all groups. CONCLUSION DSED appears to be the superior defibrillation strategy in the DOSE VF trial, irrespective of whether the preceding VF is shock-refractory or recurrent.
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Affiliation(s)
- Sheldon Cheskes
- Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada; Sunnybrook Centre for Prehospital Medicine, Toronto, Ontario, Canada; Sunnybrook Research Institute and Department of Emergency Services, Sunnybrook Health Science Centre, Toronto, Ontario, Canada; Department of Family and Community Medicine, Division of Emergency Medicine, University of Toronto, Toronto, Ontario, Canada; Li Ka Shing Knowledge Institute, St. Michaels Hospital, Toronto, ON, Canada.
| | - Ian R Drennan
- Sunnybrook Research Institute and Department of Emergency Services, Sunnybrook Health Science Centre, Toronto, Ontario, Canada; Department of Family and Community Medicine, Division of Emergency Medicine, University of Toronto, Toronto, Ontario, Canada; Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Linda Turner
- Sunnybrook Centre for Prehospital Medicine, Toronto, Ontario, Canada
| | | | - Paul Dorian
- Division of Cardiology, Unity Health, Department of Medicine, Temerty Faculty of Medicine, University of Toronto, Ontario, Canada
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Meessen JMTA, Ruggeri L, Fumagalli F, Semeraro F, Bernasconi F, Magliocca A, Cerrato M, Merigo G, De Giorgio D, Migliari M, Latini R, Ristagno G. High amplitude spectrum area measured in real-time during cardiopulmonary resuscitation is associated with favourable long-term neurological outcome after out-of-hospital cardiac arrest. J Clin Anesth 2024; 93:111323. [PMID: 38043375 DOI: 10.1016/j.jclinane.2023.111323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 11/07/2023] [Indexed: 12/05/2023]
Affiliation(s)
- Jennifer M T A Meessen
- Department of Acute Brain and Cardiovascular Injury, Istituto di Ricerche Farmacologiche Mario Negri, IRCCS, Milan, Italy
| | - Laura Ruggeri
- Department of Acute Brain and Cardiovascular Injury, Istituto di Ricerche Farmacologiche Mario Negri, IRCCS, Milan, Italy
| | - Francesca Fumagalli
- Department of Acute Brain and Cardiovascular Injury, Istituto di Ricerche Farmacologiche Mario Negri, IRCCS, Milan, Italy
| | - Federico Semeraro
- UOC Rianimazione-Emergenza Territoriale, Emergency Department, Maggiore hospital, AUSL di Bologna, Italy
| | - Filippo Bernasconi
- SOREU Metropolitana, Azienda Regionale Emergenza Urgenza, Milan, Italy; ASST, Grande Ospedale Metropolitano Niguarda, Milan, Italy
| | - Aurora Magliocca
- Department of Pathophysiology and Transplantation, University of Milan, Italy
| | - Marianna Cerrato
- Department of Acute Brain and Cardiovascular Injury, Istituto di Ricerche Farmacologiche Mario Negri, IRCCS, Milan, Italy
| | - Giulia Merigo
- Department of Anesthesiology, Intensive Care and Emergency Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Daria De Giorgio
- Department of Acute Brain and Cardiovascular Injury, Istituto di Ricerche Farmacologiche Mario Negri, IRCCS, Milan, Italy
| | | | - Roberto Latini
- Department of Acute Brain and Cardiovascular Injury, Istituto di Ricerche Farmacologiche Mario Negri, IRCCS, Milan, Italy
| | - Giuseppe Ristagno
- Department of Pathophysiology and Transplantation, University of Milan, Italy; Department of Anesthesiology, Intensive Care and Emergency Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
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Gentile FR, Wik L, Isasi I, Baldi E, Aramendi E, Steen-Hansen JE, Fasolino A, Compagnoni S, Contri E, Palo A, Primi R, Bendotti S, Currao A, Quilico F, Vicini Scajola L, Lopiano C, Savastano S. Amplitude spectral area of ventricular fibrillation can discriminate survival of patients with out-of-hospital cardiac arrest. Front Cardiovasc Med 2024; 11:1336291. [PMID: 38380178 PMCID: PMC10876863 DOI: 10.3389/fcvm.2024.1336291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 01/18/2024] [Indexed: 02/22/2024] Open
Abstract
Background Evidence of the association between AMplitude Spectral Area (AMSA) of ventricular fibrillation and outcome after out-of-hospital cardiac arrest (OHCA) is limited to short-term follow-up. In this study, we assess whether AMSA can stratify the risk of death or poor neurological outcome at 30 days and 1 year after OHCA in patients with an initial shockable rhythm or with an initial non-shockable rhythm converted to a shockable one. Methods This is a multicentre retrospective study of prospectively collected data in two European Utstein-based OHCA registries. We included all cases of OHCAs with at least one manual defibrillation. AMSA values were calculated after data extraction from the monitors/defibrillators used in the field by using a 2-s pre-shock electrocardiogram interval. The first detected AMSA value, the maximum value, the average value, and the minimum value were computed, and their outcome prediction accuracy was compared. Multivariable Cox regression models were run for both 30-day and 1-year deaths or poor neurological outcomes. Neurological cerebral performance category 1-2 was considered a good neurological outcome. Results Out of the 578 patients included, 494 (85%) died and 10 (2%) had a poor neurological outcome at 30 days. All the AMSA values considered (first value, maximum, average, and minimum) were significantly higher in survivors with good neurological outcome at 30 days. The average AMSA showed the highest area under the receiver operating characteristic curve (0.778, 95% CI: 0.7-0.8, p < 0.001). After correction for confounders, the highest tertiles of average AMSA (T3 and T2) were significantly associated with a lower risk of death or poor neurological outcome compared with T1 both at 30 days (T2: HR 0.6, 95% CI: 0.4-0.9, p = 0.01; T3: HR 0.6, 95% CI: 0.4-0.9, p = 0.02) and at 1 year (T2: HR 0.6, 95% CI: 0.4-0.9, p = 0.01; T3: HR 0.6, 95% CI: 0.4-0.9, p = 0.01). Among survivors at 30 days, a higher AMSA was associated with a lower risk of mortality or poor neurological outcome at 1 year (T3: HR 0.03, 95% CI: 0-0.3, p = 0.02). Discussion Lower AMSA values were significantly and independently associated with the risk of death or poor neurological outcome at 30 days and at 1 year in OHCA patients with either an initial shockable rhythm or a conversion rhythm from non-shockable to shockable. The average AMSA value had the strongest association with prognosis.
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Affiliation(s)
- Francesca Romana Gentile
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Department of Molecular Medicine, Section of Cardiology, University of Pavia, Pavia, Italy
| | - Lars Wik
- Oslo University Hospital, Division of Prehospital Emergency Medicine, National Service of Competence for Prehospital Acute Medicine (NAKOS), Ullevål Hospital, Oslo, Norway
- Prehospital Clinic, Doctor Car, Oslo University Hospital HF, Ullevål Hospital, Oslo, Norway
| | - Iraia Isasi
- BioRes Group, University of the Basque Country, Bilbao, Spain
| | - Enrico Baldi
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | | | | | - Alessandro Fasolino
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Department of Molecular Medicine, Section of Cardiology, University of Pavia, Pavia, Italy
| | - Sara Compagnoni
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Department of Molecular Medicine, Section of Cardiology, University of Pavia, Pavia, Italy
| | - Enrico Contri
- AAT 118 Pavia, Agenzia Regionale Urgenza Emergenza at Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Alessandra Palo
- AAT 118 Pavia, Agenzia Regionale Urgenza Emergenza at Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Roberto Primi
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Sara Bendotti
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Alessia Currao
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Federico Quilico
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Department of Molecular Medicine, Section of Cardiology, University of Pavia, Pavia, Italy
| | - Luca Vicini Scajola
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Department of Molecular Medicine, Section of Cardiology, University of Pavia, Pavia, Italy
| | - Clara Lopiano
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Department of Molecular Medicine, Section of Cardiology, University of Pavia, Pavia, Italy
| | - Simone Savastano
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
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Gentile FR, Wik L, Isasi I, Baldi E, Aramendi E, Steen-Hansen JE, Fasolino A, Compagnoni S, Contri E, Palo A, Primi R, Bendotti S, Currao A, Quilico F, Vicini Scajola L, Lopiano C, Savastano S. Amplitude spectral area of ventricular fibrillation and defibrillation success at low energy in out-of-hospital cardiac arrest. Intern Emerg Med 2023; 18:2397-2405. [PMID: 37556074 DOI: 10.1007/s11739-023-03386-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 07/25/2023] [Indexed: 08/10/2023]
Abstract
The optimal energy for defibrillation has not yet been identified and very often the maximum energy is delivered. We sought to assess whether amplitude spectral area (AMSA) of ventricular fibrillation (VF) could predict low energy level defibrillation success in out-of-hospital cardiac arrest (OHCA) patients. This is a multicentre international study based on retrospective analysis of prospectively collected data. We included all OHCAs with at least one manual defibrillation. AMSA values were calculated by analyzing the data collected by the monitors/defibrillators used in the field (Corpuls 3 and Lifepak 12/15) and using a 2-s-pre-shock electrocardiogram interval. We run two different analyses dividing the shocks into three tertiles (T1, T2, T3) based on AMSA values. 629 OHCAs were included and 2095 shocks delivered (energy ranging from 100 to 360 J; median 200 J). Both in the "extremes analysis" and in the "by site analysis", the AMSA values of the effective shocks at low energy were significantly higher than those at high energy (p = 0.01). The likelihood of shock success increased significantly from the lowest to the highest tertile. After correction for age, call to shock time, use of mechanical CPR, presence of bystander CPR, sex and energy level, high AMSA value was directly associated with the probability of shock success [T2 vs T1 OR 3.8 (95% CI 2.5-6) p < 0.001; T3 vs T1 OR 12.7 (95% CI 8.2-19.2), p < 0.001]. AMSA values are associated with the probability of low-energy shock success so that they could guide energy optimization in shockable cardiac arrest patients.
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Affiliation(s)
- Francesca R Gentile
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Viale Golgi 19, 27100, Pavia, Italy
- University of Pavia, Pavia, Italy
| | - Lars Wik
- Division of Prehospital Emergency Medicine, Oslo University Hospital, National Service of Competence for Prehospital Acute Medicine (NAKOS), Ullevål Hospital, Oslo, Norway
- Prehospital Clinic, Doctor car, Oslo University Hospital HF, Ullevål Hospital, Oslo, Norway
| | - Iraia Isasi
- BioRes Group, University of the Basque Country, Bilbao, Spain
| | - Enrico Baldi
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Viale Golgi 19, 27100, Pavia, Italy
| | | | | | - Alessandro Fasolino
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Viale Golgi 19, 27100, Pavia, Italy
- University of Pavia, Pavia, Italy
| | - Sara Compagnoni
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Viale Golgi 19, 27100, Pavia, Italy
- University of Pavia, Pavia, Italy
| | - Enrico Contri
- AAT 118 Pavia, Agenzia Regionale Urgenza Emergenza at Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Alessandra Palo
- AAT 118 Pavia, Agenzia Regionale Urgenza Emergenza at Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Roberto Primi
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Viale Golgi 19, 27100, Pavia, Italy
| | - Sara Bendotti
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Viale Golgi 19, 27100, Pavia, Italy
| | - Alessia Currao
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Viale Golgi 19, 27100, Pavia, Italy
| | - Federico Quilico
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Viale Golgi 19, 27100, Pavia, Italy
- University of Pavia, Pavia, Italy
| | - Luca Vicini Scajola
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Viale Golgi 19, 27100, Pavia, Italy
- University of Pavia, Pavia, Italy
| | - Clara Lopiano
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Viale Golgi 19, 27100, Pavia, Italy
- University of Pavia, Pavia, Italy
| | - Simone Savastano
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Viale Golgi 19, 27100, Pavia, Italy.
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Ruggeri L, Fumagalli F, Merigo G, Magliocca A, Ristagno G. Amplitude spectrum area measured in real-time during cardiopulmonary resuscitation - How does this technology work? Resuscitation 2023; 191:109941. [PMID: 37625578 DOI: 10.1016/j.resuscitation.2023.109941] [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] [Received: 08/09/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023]
Abstract
Amplitude spectrum area (AMSA) is one of the most accurate predictors of defibrillation outcome. Details on functioning and use of the available technology to measure AMSA during cardiopulmonary resuscitation (CPR) in the real clinical scenario are described. During chest compression (CC) pauses for ventilations, AMSA is promptly calculated and values displayed through a modified defibrillator. In addition, real-time AMSA analysis has the additional promise to monitor CPR quality, being AMSA threshold values contingent on CC depth. Future larger studies employing this new technology are now needed to demonstrate the impact of AMSA on survival of cardiac arrest.
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Affiliation(s)
- Laura Ruggeri
- Department of Acute Brain and Cardiovascular Injury, Istituto di Ricerche Farmacologiche Mario Negri, IRCCS, Milan, Italy
| | - Francesca Fumagalli
- Department of Acute Brain and Cardiovascular Injury, Istituto di Ricerche Farmacologiche Mario Negri, IRCCS, Milan, Italy
| | - Giulia Merigo
- Department of Anesthesiology, Intensive Care and Emergency, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Aurora Magliocca
- Department of Pathophysiology and Transplantation, University of Milan, Italy
| | - Giuseppe Ristagno
- Department of Anesthesiology, Intensive Care and Emergency, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Pathophysiology and Transplantation, University of Milan, Italy.
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Gentile FR, Wik L, Aramendi E, Baldi E, Isasi I, Steen-Hansen JE, Compagnoni S, Fasolino A, Contri E, Palo A, Primi R, Bendotti S, Currao A, Savastano S. aMplitude spectral area of ventricular fibrillation and amiOdarone Study in patients with out-of-hospital cArdIaC arrest. The MOSAIC study. Front Cardiovasc Med 2023; 10:1179815. [PMID: 37255711 PMCID: PMC10226588 DOI: 10.3389/fcvm.2023.1179815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Accepted: 04/14/2023] [Indexed: 06/01/2023] Open
Abstract
Objective Antiarrhythmic drugs are recommended for out of hospital cardiac arrest (OHCA) with shock-refractory ventricular fibrillation (VF). Amplitude Spectral Area (AMSA) of VF is a quantitative waveform measure that describes the amplitude-weighted mean frequency of VF, it correlates with intramyocardial adenosine triphosphate (ATP) concentration, it is a predictor of shock efficacy and an emerging indicator to guide defibrillation and resuscitation efforts. How AMSA might be influenced by amiodarone administration is unknown. Methods In this international multicentre observational study, all OHCAs receiving at least one shock were included. AMSA values were calculated by retrospectively analysing the pre-shock ECG interval of 2 s. Multivariable models were run and a propensity score based on the probability of receiving amiodarone was created to compare two randomly matched samples. Results 2,077 shocks were included: 1,407 in the amiodarone group and 670 in the non-amiodarone group. AMSA values were lower in the amiodarone group [8.8 (6-12.7) mV·Hz vs. 9.8 (6-14) mV·Hz, p = 0.035]. In two randomly matched propensity score-based groups of 261 shocks, AMSA was lower in the amiodarone group [8.2 (5.8-13.5) mV·Hz vs. 9.6 (5.6-11.6), p = 0.042]. AMSA was a predictor of shock success in both groups but the predictive power was lower in the amiodarone group [Area Under the Curve (AUC) non-amiodarone group 0.812, 95%CI: 0.78-0.841 vs. AUC amiodarone group 0.706, 95%CI: 0.68-0.73; p < 0.001]. Conclusions Amiodarone administration was independently associated with the probability of recording lower values of AMSA. In patients who have received amiodarone during cardiac arrest the predictive value of AMSA for shock success is significantly lower, but still statistically significant.
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Affiliation(s)
- Francesca Romana Gentile
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Lars Wik
- Oslo University Hospital, Division of Prehospital Emergency Medicine, National Service of Competence for Prehospital Acute Medicine (NAKOS), Ullevål Hospital, Oslo, Norway
- Oslo University Hospital HF, Ullevål Hospital, Oslo, Norway
| | | | - Enrico Baldi
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Iraia Isasi
- BioRes Group, University of the Basque Country, Bilbao, Spain
| | | | - Sara Compagnoni
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Alessandro Fasolino
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Enrico Contri
- AAT 118 Pavia, Agenzia Regionale Urgenza Emergenza at Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Alessandra Palo
- AAT 118 Pavia, Agenzia Regionale Urgenza Emergenza at Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Roberto Primi
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Sara Bendotti
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Alessia Currao
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Simone Savastano
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
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