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Tazes I, Passalidis S, Kaselouris E, Mancelli D, Karvounis C, Skoulakis A, Fitilis I, Bakarezos M, Papadogiannis NA, Dimitriou V, Tatarakis M. Efficient Magnetic Vortex Acceleration by femtosecond laser interaction with long living optically shaped gas targets in the near critical density plasma regime. Sci Rep 2024; 14:4945. [PMID: 38418538 PMCID: PMC10901874 DOI: 10.1038/s41598-024-54475-1] [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: 06/08/2023] [Accepted: 02/12/2024] [Indexed: 03/01/2024] Open
Abstract
We introduce a novel, gaseous target optical shaping laser set-up, capable to generate short scale length, near-critical target profiles via generated colliding blast waves. These profiles are capable to maintain their compressed density for several nanoseconds, being therefore ideal for laser-plasma particle acceleration experiments in the near critical density plasma regime. Our proposed method overcomes the laser-target synchronization limitations and delivers energetic protons, during the temporal evolution of the optically shaped profile, in a time window of approximately 2.5 ns. The optical shaping of the gas-jet profiles is optimised by MagnetoHydroDynamic simulations. 3D Particle-In-Cell models, adopting the spatiotemporal profile, simulate the 45 TW femtosecond laser plasma interaction to demonstrate the feasibility of the proposed proton acceleration set-up. The optical shaping of gas-jets is performed by multiple, nanosecond laser pulse generated blastwaves. This process results in steep gradient, short scale length plasma profiles, in the near critical density regime allowing operation at high repetition rates. Notably, the Magnetic Vortex Acceleration mechanism exhibits high efficiency in coupling the laser energy into the plasma in the optically shaped targets, resulting to collimated proton beams of energies up to 14 MeV.
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Affiliation(s)
- I Tazes
- Institute of Plasma Physics and Lasers-IPPL, University Research and Innovation Centre, Hellenic Mediterranean University, 74100, Rethymno, Greece
- Department of Electronic Engineering, Hellenic Mediterranean University, 73133, Chania, Greece
| | - S Passalidis
- CEA, DAM, DIF, 91297, Arpajon, France
- Université Paris-Saclay, CEA, LMCE, 91680, Bruyères-le-Châtel, France
| | - E Kaselouris
- Institute of Plasma Physics and Lasers-IPPL, University Research and Innovation Centre, Hellenic Mediterranean University, 74100, Rethymno, Greece
- Physical Acoustics and Optoacoustics Laboratory, Department of Music Technology and Acoustics, Hellenic Mediterranean University, 74100, Rethymno, Greece
| | - D Mancelli
- Institute of Plasma Physics and Lasers-IPPL, University Research and Innovation Centre, Hellenic Mediterranean University, 74100, Rethymno, Greece
- Department of Electronic Engineering, Hellenic Mediterranean University, 73133, Chania, Greece
| | - C Karvounis
- Institute of Plasma Physics and Lasers-IPPL, University Research and Innovation Centre, Hellenic Mediterranean University, 74100, Rethymno, Greece
- Department of Electronic Engineering, Hellenic Mediterranean University, 73133, Chania, Greece
| | - A Skoulakis
- Institute of Plasma Physics and Lasers-IPPL, University Research and Innovation Centre, Hellenic Mediterranean University, 74100, Rethymno, Greece
- Department of Electronic Engineering, Hellenic Mediterranean University, 73133, Chania, Greece
| | - I Fitilis
- Institute of Plasma Physics and Lasers-IPPL, University Research and Innovation Centre, Hellenic Mediterranean University, 74100, Rethymno, Greece
- Department of Electronic Engineering, Hellenic Mediterranean University, 73133, Chania, Greece
| | - M Bakarezos
- Institute of Plasma Physics and Lasers-IPPL, University Research and Innovation Centre, Hellenic Mediterranean University, 74100, Rethymno, Greece
- Physical Acoustics and Optoacoustics Laboratory, Department of Music Technology and Acoustics, Hellenic Mediterranean University, 74100, Rethymno, Greece
| | - N A Papadogiannis
- Institute of Plasma Physics and Lasers-IPPL, University Research and Innovation Centre, Hellenic Mediterranean University, 74100, Rethymno, Greece
- Physical Acoustics and Optoacoustics Laboratory, Department of Music Technology and Acoustics, Hellenic Mediterranean University, 74100, Rethymno, Greece
| | - V Dimitriou
- Institute of Plasma Physics and Lasers-IPPL, University Research and Innovation Centre, Hellenic Mediterranean University, 74100, Rethymno, Greece.
- Physical Acoustics and Optoacoustics Laboratory, Department of Music Technology and Acoustics, Hellenic Mediterranean University, 74100, Rethymno, Greece.
| | - M Tatarakis
- Institute of Plasma Physics and Lasers-IPPL, University Research and Innovation Centre, Hellenic Mediterranean University, 74100, Rethymno, Greece.
- Department of Electronic Engineering, Hellenic Mediterranean University, 73133, Chania, Greece.
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Kanakakis I, Stafylas P, Tsigkas G, Nikas D, Synetos A, Avramidis D, Tsiafoutis I, Dagre A, Tzikas S, Latsios G, Patsourakos N, Sanidas I, Skalidis E, Pipilis A, Bamidis P, Davlouros P, Kanakakis I, Tselegkidi M, Sertedaki E, Mamarelis I, Fraggos E, Mantzouranis E, Karvounis C, Manolis A, Chatzilymperis G, Chiotelis I, Gryllis D, Poulimenos L, Triantafyllis A, Alexopoulos D, Varlamos C, Almpanis G, Aggeli A, Sakkas A, Trikas A, Tsiamis S, Triantafylloy K, Mpenia D, Oikonomou D, Papadopoulou E, Avramidis D, Kousta M, Moulianitaki E, Poulianitis G, Mavrou G, Latsios G, Synetos A, Tousoulis D, Kafkas N, Godwin S, Mertzanos G, Koytouzis M, Tsiafoutis I, Papadopoulos A, Tsoumeleas A, Barbetseas I, Sanidas I, Athanasiou A, Paizis I, Kakkavas A, Papafanis T, Mantas I, Neroutsos G, Gkoliopoulou A, Tafrali V, Diakakis G, Grammatikopoulos K, Sinanis T, Kartalis A, Afendoulis D, Voutas P, Kardamis C, Doulis A, Kalantzis N, Vergis K, Chasikidis C, Armatas G, Damelou A, Ntogka M, Serafetinidis I, Zagkas K, Tselempis T, Makridis P, Karantoumanis I, Karapatsoudi E, Oikonomou K, Foukarakis E, Kafarakis P, Pitarokoilis M, Rogdakis E, Stavrakis S, Koudounis G, Karampetsos V, Lionakis N, Panotopoulos C, Svoronos D, Tsorlalis I, Tsatiris K, Beneki E, Papadopoulos N, Sawafta A, Kozatsani D, Spyromitros G, Bostanitis I, Dimitriadis G, Nikoloulis N, Kampouridis N, Giampatzis V, Patsilinakos S, Andrikou E, Katsiadas N, Papanagnou G, Kotsakis A, Ioannidis E, Platogiannis N, Psychari S, Pissimissis E, Gavrielatos G, Maritsa D, Papakonstantinou N, Patsourakos N, Oikonomou G, Katsanou K, Lazaris E, Moschos N, Giakoumakis T, Papagiannis N, Goudis C, Daios S, Devliotis K, Dimitriadis F, Giannadaki M, Savvidis M, Tsinopoulos G, Zarifis I, Askalidou T, Vasileiadis I, Kleitsiotou P, Sidiropoulos S, Tsaousidis A, Tzikas S, Vassilikos V, Papadopoulos C, Zarvalis Ε, Gogos C, Moschovidis V, Styliadis I, Laschos V, Spathoulas K, Vogiatzis I, Kasmeridis C, Papadopoulos A, Pittas S, Sdogkos E, Dagre A, Mpounas P, Rodis I, Pipilis A, Konstantinidis S, Makrygiannis S, Masdrakis A, Magginas A, Sevastos G, Katsimagklis G, Skalidis E, Petousis S, Davlouros P, Tsigkas G, Hahalis G, Koufou E, Tziakas D, Chalikias G, Thomaidi A, Stakos D, Chotidis A, Nikas D, Sakellariou X, Skoularigkis I, Dimos A, Iakovis N, Mpourazana A, Zagouras A, Lygkouri G, Bamidis P, Lagakis P, Spachos D, Stafylas P, Chalitsios C, Karaiskou M, Tychala C. Epidemiology, reperfusion management and outcomes of patients with myocardial infarction in Greece: The ILIAKTIS study. Hellenic J Cardiol 2022; 67:1-8. [DOI: 10.1016/j.hjc.2022.03.003] [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: 07/21/2021] [Revised: 01/20/2022] [Accepted: 03/08/2022] [Indexed: 11/26/2022] Open
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Hamilos M, Kanakakis J, Anastasiou I, Karvounis C, Vasilikos V, Goudevenos J, Michalis L, Koutouzis M, Tsiafoutis I, Raisakis K, Stakos D, Hahalis G, Vardas P. Ticagrelor versus clopidogrel in patients with STEMI treated with thrombolysis: the MIRTOS trial. EUROINTERVENTION 2021; 16:1163-1169. [PMID: 32715996 PMCID: PMC9724948 DOI: 10.4244/eij-d-20-00268] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 11/23/2022]
Abstract
AIMS We aimed to demonstrate whether coronary microvascular function is improved after ticagrelor administration compared to clopidogrel administration in STEMI subjects undergoing thrombolysis. METHODS AND RESULTS MIRTOS is a multicentre study of ticagrelor versus clopidogrel in STEMI subjects treated with fibrinolysis. We enrolled 335 patients <75 years old with STEMI eligible for thrombolysis, of whom 167 were randomised to receive clopidogrel and 168 to receive ticagrelor together with thrombolysis. Primary outcome was the difference in post-PCI corrected TIMI frame count (CTFC). All clinical events were recorded in a three-month follow-up period. From the 335 patients who were randomised, 259 underwent PCI (129 clopidogrel and 130 ticagrelor) and 154 angiographies were analysable for the study primary endpoint. No significant difference was found between the clopidogrel (n=85) and ticagrelor (n=69) groups for CTFC (24.33±17.35 vs 28.33±17.59, p=0.10). No significant differences were observed in MACE and major bleeding events between randomisation groups (OR 2.0, 95% CI: 0.18-22.2, p=0.99). CONCLUSIONS Thrombolysis with ticagrelor in patients <75 years old was not able to demonstrate superiority compared to clopidogrel in terms of microvascular injury, while there was no difference between the two groups in MACE and major bleeding events. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT02429271. EudraCT Number 2014-004082-25.
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Affiliation(s)
- Michalis Hamilos
- University Hospital of Heraklion, Stavrakia-Voutes, Crete 71100, Greece
| | - John Kanakakis
- Clinical Therapeutics, Alexandra Hospital, University of Athens, Athens, Greece
| | - Ioannis Anastasiou
- Department of Cardiology, University Hospital of Heraklion, Crete, Greece
| | | | | | - John Goudevenos
- 1st Cardiology Department, Ioannina University Hospital, Ioannina, Greece
| | - Lampros Michalis
- 2nd Cardiology Department, Ioannina University Hospital, Ioannina, Greece
| | | | | | | | - Dimitrios Stakos
- Cardiology Department, Democritus University of Thrace, Alexandroupolis, Greece
| | - George Hahalis
- Cardiology Department, Patras University Hospital, Rio, Greece
| | - Panos Vardas
- Hellenic Cardiovascular Research Society (HCRS), Athens, Greece
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Kiaos A, Antonakaki D, Bazmpani MA, Karvounis C, Rimoldi O, Karamitsos TD. Prognostic value of cardiovascular magnetic resonance T1 mapping techniques in non-ischemic dilated cardiomyopathy: A systematic review and meta-analysis. Int J Cardiol 2020; 312:110-116. [DOI: 10.1016/j.ijcard.2020.04.052] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 04/16/2020] [Accepted: 04/17/2020] [Indexed: 01/21/2023]
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De Backer G, Jankowski P, Kotseva K, Mirrakhimov E, Reiner Ž, Rydén L, Tokgözoğlu L, Wood D, De Bacquer D, De Backer G, Jankowski P, Kotseva K, Mirrakhimov E, Reiner Z, Rydén L, Tokgözoğlu L, Wood D, De Bacquer D, Kotseva K, De Backer G, Abreu A, Aguiar C, Badariene J, Bruthans J, Castro Conde A, Cifkova R, Crowley J, Davletov K, Bacquer DD, De Smedt D, De Sutter J, Deckers J, Dilic M, Dolzhenko M, Druais H, Dzerve V, Erglis A, Fras Z, Gaita D, Gotcheva N, Grobbee D, Gyberg V, Hasan Ali H, Heuschmann P, Hoes A, Jankowski P, Lalic N, Lehto S, Lovic D, Maggioni A, Mancas S, Marques-Vidal P, Mellbin L, Miličić D, Mirrakhimov E, Oganov R, Pogosova N, Reiner Ž, Rydén L, Stagmo M, Störk S, Sundvall J, Tokgözoğlu L, Tsioufis K, Vulic D, Wood D, Wood D, Kotseva K, Jennings C, Adamska A, Adamska S, Rydén L, Mellbin L, Tuomilehto J, Schnell O, Druais H, Fiorucci E, Glemot M, Larras F, Missiamenou V, Maggioni A, Taylor C, Ferreira T, Lemaitre K, Bacquer DD, De Backer G, Raman L, Sundvall J, DeSmedt D, De Sutter J, Willems A, De Pauw M, Vervaet P, Bollen J, Dekimpe E, Mommen N, Van Genechten G, Dendale P, Bouvier C, Chenu P, Huyberechts D, Persu A, Dilic M, Begic A, Durak Nalbantic A, Dzubur A, Hadzibegic N, Iglica A, Kapidjic S, Osmanagic Bico A, Resic N, Sabanovic Bajramovic N, Zvizdic F, Vulic D, Kovacevic-Preradovic T, Popovic-Pejicic S, Djekic D, Gnjatic T, Knezevic T, Kovacevic-Preradovic T, Kos L, Popovic-Pejicic S, Stanetic B, Topic G, Gotcheva N, Georgiev B, Terziev A, Vladimirov G, Angelov A, Kanazirev B, Nikolaeva S, Tonkova D, Vetkova M, Milicic D, Reiner Ž, Bosnic A, Dubravcic M, Glavina M, Mance M, Pavasovic S, Samardzic J, Batinic T, Crljenko K, Delic-Brkljacic D, Dula K, Golubic K, Klobucar I, Kordic K, Kos N, Nedic M, Olujic D, Sedinic V, Blazevic T, Pasalic A, Percic M, Sikic J, Bruthans J, Cífková R, Hašplová K, Šulc P, Wohlfahrt P, Mayer O, Cvíčela M, Filipovský J, Gelžinský J, Hronová M, Hasan-Ali H, Bakery S, Mosad E, Hamed H, Ibrahim A, Elsharef M, Kholef E, Shehata A, Youssef M, Elhefny E, Farid H, Moustafa T, Sobieh M, Kabil H, Abdelmordy A, Lehto S, Kiljander E, Kiljander P, Koukkunen H, Mustonen J, Cremer C, Frantz S, Haupt A, Hofmann U, Ludwig K, Melnyk H, Noutsias M, Karmann W, Prondzinsky R, Herdeg C, Hövelborn T, Daaboul A, Geisler T, Keller T, Sauerbrunn D, Walz-Ayed M, Ertl G, Leyh R, Störk S, Heuschmann P, Ehlert T, Klocke B, Krapp J, Ludwig T, Käs J, Starke C, Ungethüm K, Wagner M, Wiedmann S, Tsioufis K, Tolis P, Vogiatzi G, Sanidas E, Tsakalis K, Kanakakis J, Koutsoukis A, Vasileiadis K, Zarifis J, Karvounis C, Crowley J, Gibson I, Houlihan A, Kelly C, O'Donnell M, Bennati M, Cosmi F, Mariottoni B, Morganti M, Cherubini A, Di Lenarda A, Radini D, Ramani F, Francese M, Gulizia M, Pericone D, Davletov K, Aigerim K, Zholdin B, Amirov B, Assembekov B, Chernokurova E, Ibragimova F, Kodasbayev A, Markova A, Mirrakhimov E, Asanbaev A, Toktomamatov U, Tursunbaev M, Zakirov U, Abilova S, Arapova R, Bektasheva E, Esenbekova J, Neronova K, Asanbaev A, Baigaziev K, Toktomamatov U, Zakirov U, Baitova G, Zheenbekov T, Erglis A, Andrejeva T, Bajare I, Kucika G, Labuce A, Putane L, Stabulniece M, Dzerve V, Klavins E, Sime I, Badariene J, Gedvilaite L, Pečiuraite D, Sileikienė V, Skiauteryte E, Solovjova S, Sidabraite R, Briedis K, Ceponiene I, Jurenas M, Kersulis J, Martinkute G, Vaitiekiene A, Vasiljevaite K, Veisaite R, Plisienė J, Šiurkaitė V, Vaičiulis Ž, Jankowski P, Czarnecka D, Kozieł P, Podolec P, Nessler J, Gomuła P, Mirek-Bryniarska E, Bogacki P, Wiśniewski A, Pająk A, Wolfshaut-Wolak R, Bućko J, Kamiński K, Łapińska M, Paniczko M, Raczkowski A, Sawicka E, Stachurska Z, Szpakowicz M, Musiał W, Dobrzycki S, Bychowski J, Kosior D, Krzykwa A, Setny M, Kosior D, Rak A, Gąsior Z, Haberka M, Gąsior Z, Haberka M, Szostak-Janiak K, Finik M, Liszka J, Botelho A, Cachulo M, Sousa J, Pais A, Aguiar C, Durazzo A, Matos D, Gouveia R, Rodrigues G, Strong C, Guerreiro R, Aguiar J, Abreu A, Cruz M, Daniel P, Morais L, Moreira R, Rosa S, Rodrigues I, Selas M, Gaita D, Mancas S, Apostu A, Cosor O, Gaita L, Giurgiu L, Hudrea C, Maximov D, Moldovan B, Mosteoru S, Pleava R, Ionescu M, Parepa I, Pogosova N, Arutyunov A, Ausheva A, Isakova S, Karpova A, Salbieva A, Sokolova O, Vasilevsky A, Pozdnyakov Y, Antropova O, Borisova L, Osipova I, Lovic D, Aleksic M, Crnokrak B, Djokic J, Hinic S, Vukasin T, Zdravkovic M, Lalic N, Jotic A, Lalic K, Lukic L, Milicic T, Macesic M, Stanarcic Gajovic J, Stoiljkovic M, Djordjevic D, Kostic S, Tasic I, Vukovic A, Fras Z, Jug B, Juhant A, Krt A, Kugonjič U, Chipayo Gonzales D, Gómez Barrado J, Kounka Z, Marcos Gómez G, Mogollón Jiménez M, Ortiz Cortés C, Perez Espejo P, Porras Ramos Y, Colman R, Delgado J, Otero E, Pérez A, Fernández-Olmo M, Torres-LLergo J, Vasco C, Barreñada E, Botas J, Campuzano R, González Y, Rodrigo M, de Pablo C, Velasco E, Hernández S, Lozano C, González P, Castro A, Dalmau R, Hernández D, Irazusta F, Vélez A, Vindel C, Gómez-Doblas J, García Ruíz V, Gómez L, Gómez García M, Jiménez-Navarro M, Molina Ramos A, Marzal D, Martínez G, Lavado R, Vidal A, Rydén L, Boström-Nilsson V, Kjellström B, Shahim B, Smetana S, Hansen O, Stensgaard-Nake E, Deckers J, Klijn A, Mangus T, Peters R, Scholte op Reimer W, Snaterse M, Aydoğdu S, Ç Erol, Otürk S, Tulunay Kaya C, Ahmetoğlu Y, Ergene O, Akdeniz B, Çırgamış D, Akkoyun H Kültürsay S, Kayıkçıoğlu M, Çatakoğlu A, Çengel A, Koçak A, Ağırbaşlı M, Açıksarı G, Çekin M, Tokgözoğlu L, Kaya E, Koçyiğit D, Öngen Z, Özmen E, Sansoy V, Kaya A, Oktay V, Temizhan A, Ünal S, İ Yakut, Kalkan A, Bozkurt E, Kasapkara H, Dolzhenko M, Faradzh C, Hrubyak L, Konoplianyk L, Kozhuharyova N, Lobach L, Nesukai V, Nudchenko O, Simagina T, Yakovenko L, Azarenko V, Potabashny V, Bazylevych A, Bazylevych M, Kaminska K, Panchenko L, Shershnyova O, Ovrakh T, Serik S, Kolesnik T, Kosova H, Wood D, Adamska A, Adamska S, Jennings C, Kotseva K, Hoye P Atkin A, Fellowes D, Lindsay S, Atkinson C, Kranilla C, Vinod M, Beerachee Y, Bennett C, Broome M, Bwalya A, Caygill L, Dinning L, Gillespie A, Goodfellow R, Guy J, Idress T, Mills C, Morgan C, Oustance N, Singh N, Yare M, Jagoda J, Bowyer H, Christenssen V, Groves A, Jan A, Riaz A, Gill M, Sewell T, Gorog D, Baker M, De Sousa P, Mazenenga T, Porter J, Haines F, Peachey T, Taaffe J, Wells K, Ripley D, Forward H, McKie H, Pick S, Thomas H, Batin P, Exley D, Rank T, Wright J, Kardos A, Sutherland SB, Wren L, Leeson P, Barker D, Moreby B, Sawyer J, Stirrup J, Brunton M, Brodison A, Craig J, Peters S, Kaprielian R, Bucaj A, Mahay K, Oblak M, Gale C, Pye M, McGill Y, Redfearn H, Fearnley M. Management of dyslipidaemia in patients with coronary heart disease: Results from the ESC-EORP EUROASPIRE V survey in 27 countries. Atherosclerosis 2019; 285:135-146. [DOI: 10.1016/j.atherosclerosis.2019.03.014] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 02/22/2019] [Accepted: 03/19/2019] [Indexed: 12/16/2022]
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Kiaos A, Tziatzios I, Hadjimiltiades S, Karvounis C, Karamitsos TD. Data on diagnostic performance of stress perfusion cardiac magnetic resonance for coronary artery disease detection at the vessel level. Data Brief 2017. [PMID: 29541674 PMCID: PMC5847623 DOI: 10.1016/j.dib.2017.11.096] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Stress perfusion cardiac magnetic resonance (CMR) has been proposed as an important gatekeeper for invasive coronary angiography (ICA) and percutaneous coronary interventions (PCI) in patients evaluated for possible coronary artery disease (CAD) (Fihn et al., 2012; Montalescot et al., 2013) [1], [2]. Several meta-analyses have evaluated the accuracy of stress perfusion CMR to diagnose CAD at the vessel level (Danad et al., 2017; Dai et al., 2016; Jiang et al., 2016; Takx et al., 2015; Li et al., 2015; Desai and Jha, 2013; Jaarsma et al. 2012; Hamon et al., 2010; Nandalur et al. 2007) [3], [4], [5], [6], [7], [8], [9], [10], [11]. However, they included in the same analysis studies with different definitions of significant CAD (i.e. fractional flow reserve [FFR] < 0.75 and < 0.80 or coronary stenosis ≥ 50% and ≥ 70%), magnetic field strength (1.5 or 3 Tesla [T]), and study protocol (integration or not of late gadolinium enhancement [LGE] into stress perfusion protocol). Data of 34 studies (6091 arteries) have been pooled with the aim of analyzing the accuracy of stress perfusion CMR for the diagnosis of ischemic heart disease at the vessel level according to different definitions of significant CAD, magnetic field strength and study protocol (Arnold et al., 2010; Bettencourt et al., 2013; Cheng et al., 2007; Chiribiri et al., 2013; Cury et al., 2006; De Mello et al., 2012; Donati et al., 2010; Ebersberger et al., 2013; Gebker et al., 2008; Greulich et al., 2015; Hussain et al., 2016; Ishida et al., 2005, 2003; Kamiya et al., 2014; Kitagawa et al., 2008; Klein et al., 2008; Klem et al., 2006; Klumpp et al., 2010; Krittayaphong et al., 2009; Lockie et al., 2011; Ma et al., 2012; Merkle et al., 2007; Meyer et al., 2008; Mor-Avi et al., 2008; Pan et al., 2015; Papanastasiou et al., 2016; Pons Lladó et al., 2004; Sakuma et al., 2005; Salerno et al., 2014; Scheffel et al., 2010; van Werkhoven et al., 2010; Walcher et al., 2013; Watkins et al., 2009; Yun et al., 2015) [12–45]. This article describes data related article titled “Diagnostic Performance of Stress Perfusion Cardiac Magnetic Resonance for the Detection of Coronary Artery Disease” (Kiaos et al., submitted for publication) [46].
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Affiliation(s)
- Apostolos Kiaos
- 1st Department of Cardiology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Ioannis Tziatzios
- 1st Department of Cardiology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Stavros Hadjimiltiades
- 1st Department of Cardiology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Charalambos Karvounis
- 1st Department of Cardiology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Theodoros D Karamitsos
- 1st Department of Cardiology, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Kiaos A, Tziatzios I, Hadjimiltiades S, Karvounis C, Karamitsos TD. Diagnostic performance of stress perfusion cardiac magnetic resonance for the detection of coronary artery disease: A systematic review and meta-analysis. Int J Cardiol 2017; 252:229-233. [PMID: 29196090 DOI: 10.1016/j.ijcard.2017.11.066] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [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: 09/28/2017] [Revised: 11/19/2017] [Accepted: 11/20/2017] [Indexed: 10/18/2022]
Abstract
INTRODUCTION The purpose of this study was to investigate the accuracy of qualitative stress perfusion cardiac magnetic resonance (CMR) to diagnose ischemia-causing lesions according to different definitions of significant coronary artery disease (CAD), and magnetic field strength. METHODS We searched PubMed, Web of Science, and the Cochrane Library for studies evaluating diagnostic performance of qualitative stress perfusion CMR for diagnosis of CAD versus coronary angiography or fractional flow reserve (FFR) from inception to 10 September 2017. We used hierarchical models to synthesize the available data. RESULTS Sixty-seven studies (7113 patients) met the inclusion criteria. The patient-based analysis of studies using FFR as the reference standard demonstrated a mean sensitivity of 0.90 (95% confidence interval [CI], 0.85-0.93) and a mean specificity of 0.85 (95% CI, 0.80-0.89). The patient-based analyses for detecting coronary stenosis ≥50% and coronary stenosis ≥70% at 1.5T and for detecting coronary stenosis ≥50% and coronary stenosis ≥70%, at 3T, demonstrated a mean sensitivity of 0.82 (95% CI, 0.79-0.84), 0.86 (95% CI, 0.83-0.89), 0.90 (95% CI, 0.82-0.95), and 0.91 (95% CI, 0.79-0.96), respectively; with a mean specificity of 0.75 (95% CI, 0.71-0.80), 0.77 (95% CI, 0.71-0.81), 0.79 (95% CI, 0.69-0.86), and 0.74 (95% CI, 0.59-0.85). CONCLUSION Qualitative stress perfusion CMR has high accuracy for the diagnosis of CAD, irrespective of the reference standard and the magnet strength. Studies using FFR as the reference standard had higher diagnostic accuracy on a patient level compared to studies using coronary angiography, with a notable difference in specificity.
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Affiliation(s)
- Apostolos Kiaos
- 1st Department of Cardiology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Ioannis Tziatzios
- 1st Department of Cardiology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Stavros Hadjimiltiades
- 1st Department of Cardiology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Charalambos Karvounis
- 1st Department of Cardiology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Theodoros D Karamitsos
- 1st Department of Cardiology, Aristotle University of Thessaloniki, Thessaloniki, Greece.
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Nikolaidou C, Bazmpani MA, Tziatzios I, Toumpourleka M, Karvounis C, Karamitsos TD. Double-chambered left ventricle characterized by CMR. Hellenic J Cardiol 2017; 58:459-460. [DOI: 10.1016/j.hjc.2017.05.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 05/21/2017] [Accepted: 05/24/2017] [Indexed: 10/19/2022] Open
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Tsioufis C, Ziakas A, Dimitriadis K, Davlouros P, Marketou M, Kasiakogias A, Petroglou D, Kallikazaros I, Stefanadis C, Karvounis C, Alexopoulos D, Vardas P, Papademetriou V, Tousoulis D. [BP.10.06] BLOOD PRESSURE RESPONSE TO CATHETER-BASED RENAL SYMPATHETIC DENERVATION IN PATIENTS WITH RESISTANT HYPERTENSION. J Hypertens 2017. [DOI: 10.1097/01.hjh.0000524025.10510.2c] [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] [Indexed: 11/25/2022]
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Athyros VG, Alexandrides TK, Bilianou H, Cholongitas E, Doumas M, Ganotakis ES, Goudevenos J, Elisaf MS, Germanidis G, Giouleme O, Karagiannis A, Karvounis C, Katsiki N, Kotsis V, Kountouras J, Liberopoulos E, Pitsavos C, Polyzos S, Rallidis LS, Richter D, Tsapas AG, Tselepis AD, Tsioufis K, Tziomalos K, Tzotzas T, Vasiliadis TG, Vlachopoulos C, Mikhailidis DP, Mantzoros C. The use of statins alone, or in combination with pioglitazone and other drugs, for the treatment of non-alcoholic fatty liver disease/non-alcoholic steatohepatitis and related cardiovascular risk. An Expert Panel Statement. Metabolism 2017; 71:17-32. [PMID: 28521870 DOI: 10.1016/j.metabol.2017.02.014] [Citation(s) in RCA: 183] [Impact Index Per Article: 26.1] [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: 01/04/2017] [Revised: 02/23/2017] [Accepted: 02/25/2017] [Indexed: 02/07/2023]
Abstract
Non-alcoholic fatty liver disease (NAFLD), the most common liver disease, is characterized by accumulation of fat (>5% of the liver tissue), in the absence of alcohol abuse or other chronic liver diseases. It is closely related to the epidemic of obesity, metabolic syndrome or type 2 diabetes mellitus (T2DM). NAFLD can cause liver inflammation and progress to non-alcoholic steatohepatitis (NASH), fibrosis, cirrhosis or hepatocellular cancer (HCC). Nevertheless, cardiovascular disease (CVD) is the most common cause of death in NAFLD/NASH patients. Current guidelines suggest the use of pioglitazone both in patients with T2DM and in those without. The use of statins, though considered safe by the guidelines, have very limited use; only 10% in high CVD risk patients are on statins by tertiary centers in the US. There are data from several animal studies, 5 post hoc analyses of prospective long-term survival studies, and 5 rather small biopsy proven NASH studies, one at baseline and on at the end of the study. All these studies provide data for biochemical and histological improvement of NAFLD/NASH with statins and in the clinical studies large reductions in CVD events in comparison with those also on statins and normal liver. Ezetimibe was also reported to improve NAFLD. Drugs currently in clinical trials seem to have potential for slowing down the evolution of NAFLD and for reducing liver- and CVD-related morbidity and mortality, but it will take time before they are ready to be used in everyday clinical practice. The suggestion of this Expert Panel is that, pending forthcoming randomized clinical trials, physicians should consider using a PPARgamma agonist, such as pioglitazone, or, statin use in those with NAFLD/NASH at high CVD or HCC risk, alone and/or preferably in combination with each other or with ezetimibe, for the primary or secondary prevention of CVD, and the avoidance of cirrhosis, liver transplantation or HCC, bearing in mind that CVD is the main cause of death in NAFLD/NASH patients.
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Affiliation(s)
- Vasilios G Athyros
- 2nd Prop. Department of Internal Medicine, Hippocration Hospital, Medical School of Aristotle University Thessaloniki, Greece.
| | - Theodore K Alexandrides
- Department of Internal Medicine, Division of Endocrinology, University of Patras Medical School, Patras, Greece
| | - Helen Bilianou
- Lipid Clinic, Cardiology Department, Tzaneio Hospital, Piraeus, Greece
| | - Evangelos Cholongitas
- 4th Prop. Department of Internal Medicine, Hippocration Hospital, Division of Gastroenterology and Hepatology, Medical School of Aristotle University Thessaloniki, Greece
| | - Michael Doumas
- 2nd Prop. Department of Internal Medicine, Hippocration Hospital, Medical School of Aristotle University Thessaloniki, Greece
| | - Emmanuel S Ganotakis
- Department of Internal Medicine University Hospital of Crete, University of Crete Medical School, Heraklion, Greece
| | - John Goudevenos
- Department of Cardiology Medical School, University Hospital of Ioannina, Ioannina, Greece
| | - Moses S Elisaf
- Department of Internal Medicine, School of Health Sciences, Faculty of Medicine, University of Ioannina, Ioannina, Greece
| | - Georgios Germanidis
- 1st Department of Internal Medicine, Gastroenterology and Hepatology Section, AHEPA Hospital, Aristotle University Medical School, Thessaloniki, Greece
| | - Olga Giouleme
- 2nd Prop. Department of Internal Medicine, Hippocration Hospital, Medical School of Aristotle University Thessaloniki, Greece
| | - Asterios Karagiannis
- 2nd Prop. Department of Internal Medicine, Hippocration Hospital, Medical School of Aristotle University Thessaloniki, Greece
| | - Charalambos Karvounis
- First Cardiology Department, AHEPA Hospital, Medical School, Aristotle University Thessaloniki, Greece
| | - Niki Katsiki
- 2nd Prop. Department of Internal Medicine, Hippocration Hospital, Medical School of Aristotle University Thessaloniki, Greece
| | - Vasilios Kotsis
- 3rd Department of Internal Medicine, Papageorgiou Hospital, Aristotle University Thessaloniki, Greece
| | - Jannis Kountouras
- 2nd Prop. Department of Internal Medicine, Hippocration Hospital, Medical School of Aristotle University Thessaloniki, Greece
| | - Evangelos Liberopoulos
- Department of Internal Medicine, School of Health Sciences, Faculty of Medicine, University of Ioannina, Ioannina, Greece
| | - Christos Pitsavos
- 1st Cardiology Clinic, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Stergios Polyzos
- 2nd Prop. Propedeutic Department of Internal Medicine, Hippocration Hospital, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Loukianos S Rallidis
- 2nd Department of Cardiology, University General Hospital Attikon, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | | | - Apostolos G Tsapas
- 2nd Department of Internal Medicine-Diabetology, Hippocration Hospital, Aristotle University Thessaloniki, Medical School, Thessaloniki, Greece
| | - Alexandros D Tselepis
- Atherothrombosis Research Centre/Department of Chemistry, University of Ioannina, Ioannina, Greece
| | - Konstantinos Tsioufis
- 1st Cardiology Clinic, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Konstantinos Tziomalos
- 1st Prop. Department of Internal Medicine, AHEPA Hospital, Aristotle University Medical School, Thessaloniki, Greece
| | | | - Themistoklis G Vasiliadis
- 3rd Department of Internal Medicine, Papageorgiou Hospital, Aristotle University Thessaloniki, Greece
| | - Charalambos Vlachopoulos
- 1st Cardiology Clinic, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Dimitri P Mikhailidis
- Department of Clinical Biochemistry, Royal Free Hospital Campus, University College London Medical School, University College London (UCL), London, UK
| | - Christos Mantzoros
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
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Karamitsos TD, Nikolaidou C, Koutsakis A, Anastasiadis K, Karvounis C, Hadjimiltiades S. Iatrogenic Lutembacher Syndrome after Percutaneous Mitral Commissurotomy. J Heart Valve Dis 2017; 26:368-371. [PMID: 29092127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Atrial septal defects (ASDs) are common immediately after percutaneous mitral commissurotomy (PMC). They are usually small, hemodynamically insignificant, and tend to decrease or disappear within 6 to 12 months. Herein, a case is described of persistent ASD in a patient with mitral valve stenosis who had undergone successful PMC three years previously. The patient had signs and symptoms of right heart failure and severe tricuspid regurgitation (TR) with borderline right ventricular systolic function on echocardiography, in addition to the ASD. Cardiac magnetic resonance (CMR) imaging played a significant role in decision-making by clarifying the anatomy of the ASD and severity of the shunt, measuring right ventricular systolic function, and providing absolute quantification for TR. The right ventricular systolic function was normal on CMR, rendering the patient suitable for surgical treatment. Persistent iatrogenic ASDs have become an increasingly common finding after invasive procedures requiring trans-septal puncture and the manipulation of catheters. Multimodality imaging can provide significant aid in the management of patients with valvular heart disease complicated by iatrogenic shunts.
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Affiliation(s)
- Theodoros D Karamitsos
- First Department of Cardiology, AHEPA Hospital, Aristotle University, Thessaloniki, Greece. Electronic correspondence:
| | | | - Athanasios Koutsakis
- First Department of Cardiology, AHEPA Hospital, Aristotle University, Thessaloniki, Greece
| | - Kyriakos Anastasiadis
- Cardiothoracic Department, AHEPA Hospital, Aristotle University, Thessaloniki, Greece
| | - Charalambos Karvounis
- First Department of Cardiology, AHEPA Hospital, Aristotle University, Thessaloniki, Greece
| | - Stavros Hadjimiltiades
- First Department of Cardiology, AHEPA Hospital, Aristotle University, Thessaloniki, Greece
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Tsioufis C, Ziakas A, Dimitriadis K, Davlouros P, Marketou M, Kasiakogias A, Thomopoulos C, Petroglou D, Tsiachris D, Doumas M, Skalidis E, Karvounis C, Alexopoulos D, Vardas P, Kallikazaros I, Stefanadis C, Papademetriou V, Tousoulis D. Erratum to: Blood pressure response to catheter-based renal sympathetic denervation in severe resistant hypertension: data from the Greek Renal Denervation Registry. Clin Res Cardiol 2017; 106:392. [PMID: 28236019 DOI: 10.1007/s00392-017-1084-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 11/30/2022]
Affiliation(s)
- C Tsioufis
- First Cardiology Clinic, Hippokration Hospital, University of Athens, 114 Vas.Sofias Ave., 11527, Athens, Greece.
| | - A Ziakas
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - K Dimitriadis
- First Cardiology Clinic, Hippokration Hospital, University of Athens, 114 Vas.Sofias Ave., 11527, Athens, Greece
| | - P Davlouros
- Department of Cardiology, Patras University Hospital, Patras, Greece
| | - M Marketou
- Cardiology Department, Heraklion University Hospital, Crete, Greece
| | - A Kasiakogias
- First Cardiology Clinic, Hippokration Hospital, University of Athens, 114 Vas.Sofias Ave., 11527, Athens, Greece
| | - C Thomopoulos
- First Cardiology Clinic, Hippokration Hospital, University of Athens, 114 Vas.Sofias Ave., 11527, Athens, Greece
| | - D Petroglou
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - D Tsiachris
- First Cardiology Clinic, Hippokration Hospital, University of Athens, 114 Vas.Sofias Ave., 11527, Athens, Greece
| | - M Doumas
- 2nd Propedeutic Department of Internal Medicine, Aristotle University, Thessaloniki, Greece
| | - E Skalidis
- Cardiology Department, Heraklion University Hospital, Crete, Greece
| | - C Karvounis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - D Alexopoulos
- Department of Cardiology, Attikon University Hospital, Athens, Greece
| | - P Vardas
- Cardiology Department, Heraklion University Hospital, Crete, Greece
| | - I Kallikazaros
- Cardiology Department, Hippokration Hospital, Athens, Greece
| | - C Stefanadis
- First Cardiology Clinic, Hippokration Hospital, University of Athens, 114 Vas.Sofias Ave., 11527, Athens, Greece
| | - V Papademetriou
- First Cardiology Clinic, Hippokration Hospital, University of Athens, 114 Vas.Sofias Ave., 11527, Athens, Greece
| | - D Tousoulis
- First Cardiology Clinic, Hippokration Hospital, University of Athens, 114 Vas.Sofias Ave., 11527, Athens, Greece
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Kaimakamis E, Tsara V, Bratsas C, Sichletidis L, Karvounis C, Maglaveras N. Evaluation of a Decision Support System for Obstructive Sleep Apnea with Nonlinear Analysis of Respiratory Signals. PLoS One 2016; 11:e0150163. [PMID: 26937681 PMCID: PMC4777493 DOI: 10.1371/journal.pone.0150163] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Accepted: 02/10/2016] [Indexed: 12/12/2022] Open
Abstract
Introduction Obstructive Sleep Apnea (OSA) is a common sleep disorder requiring the time/money consuming polysomnography for diagnosis. Alternative methods for initial evaluation are sought. Our aim was the prediction of Apnea-Hypopnea Index (AHI) in patients potentially suffering from OSA based on nonlinear analysis of respiratory biosignals during sleep, a method that is related to the pathophysiology of the disorder. Materials and Methods Patients referred to a Sleep Unit (135) underwent full polysomnography. Three nonlinear indices (Largest Lyapunov Exponent, Detrended Fluctuation Analysis and Approximate Entropy) extracted from two biosignals (airflow from a nasal cannula, thoracic movement) and one linear derived from Oxygen saturation provided input to a data mining application with contemporary classification algorithms for the creation of predictive models for AHI. Results A linear regression model presented a correlation coefficient of 0.77 in predicting AHI. With a cutoff value of AHI = 8, the sensitivity and specificity were 93% and 71.4% in discrimination between patients and normal subjects. The decision tree for the discrimination between patients and normal had sensitivity and specificity of 91% and 60%, respectively. Certain obtained nonlinear values correlated significantly with commonly accepted physiological parameters of people suffering from OSA. Discussion We developed a predictive model for the presence/severity of OSA using a simple linear equation and additional decision trees with nonlinear features extracted from 3 respiratory recordings. The accuracy of the methodology is high and the findings provide insight to the underlying pathophysiology of the syndrome. Conclusions Reliable predictions of OSA are possible using linear and nonlinear indices from only 3 respiratory signals during sleep. The proposed models could lead to a better study of the pathophysiology of OSA and facilitate initial evaluation/follow up of suspected patients OSA utilizing a practical low cost methodology. Trial Registration ClinicalTrials.gov NCT01161381
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Affiliation(s)
- Evangelos Kaimakamis
- Lab of Medical Informatics, Aristotle University of Thessaloniki, Thessaloniki, Greece
- * E-mail: ;
| | - Venetia Tsara
- Sleep Unit, Pulmonary Department, General Hospital “G. Papanikolaou,” Thessaloniki, Greece
| | - Charalambos Bratsas
- Lab of Medical Informatics, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Lazaros Sichletidis
- Pulmonary Department, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | | | - Nikolaos Maglaveras
- Lab of Medical Informatics, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Chrissoheris M, Ziakas A, Chalapas A, Chadjimiltiades S, Styliades I, Karvounis C, Nikolaou I, Spargias K. Acute Invasive Hemodynamic Effects of Transcatheter Aortic Valve Replacement. J Heart Valve Dis 2016; 25:162-172. [PMID: 27989060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
BACKGROUND Aortic stenosis imposes a chronic pressure overload on the left ventricle, with attendant adaptations in hemodynamics, muscle mass and performance. The hemodynamic changes that occur during the initial 24 h following abrupt removal of the impediment to left ventricular outflow have not been previously examined. METHODS A total of 52 patients with right heart catheterization was evaluated before, within 6 h and at 24 h after successful transcatheter aortic valve replacement (TAVR). Echocardiographic data were examined before and within 30 days of the procedure. RESULTS TAVR was successful in all 52 patients, and at 24 h after the procedure resulted in: (i) an increase in cardiac index (CI) (from 2.0 ± 0.6 to 3.1 ± 0.7 l/min/ m2, p <0.001) and stroke volume (SV) (from 62.3 ± 18.7 to 76.6 ± 21.3 ml, p <0.001); (ii) reductions in systemic vascular resistance (from 1555 ± 458 to 1021 ± 280 dyne·s/cm5, p <0.001) and pulmonary vascular resistance (from 174 ± 150 to 112 ± 76 dyne·s/cm5, p = 0.001); (iii) reductions in pulmonary capillary wedge pressure (from 24.2 ± 6.7 to 19.7 ± 7.3 mmHg, p <0.001), mean pulmonary artery pressure (from 32.2 ± 9.9 to 27.5 ± 8.8 mmHg, p = 0.002) and in central venous pressure (from 13.5 ± 4.8 to 9.4 ± 3.9 mmHg, p <0.001); and (iv) an increase in systolic arterial pressure (from 127 ± 25 to 135 ± 14 mmHg, p = 0.04), along with a decrease in diastolic arterial pressure (from 58 ± 11 to 53 ± 9 mmHg, p = 0.009). CONCLUSIONS Successful TAVR results in immediate and sizeable improvements in SV and CI, reductions in left and right ventricular filling pressures, and marked reductions in systemic and pulmonary vascular resistances.
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Affiliation(s)
| | - Antonis Ziakas
- University Cardiology Clinic, AHEPA Hospital, Thessaloniki, Greece
| | - Antonis Chalapas
- Department of Transcatheter Heart Valves, HYGEIA Hospital, Athens
| | | | | | | | - Ioulia Nikolaou
- Department of Transcatheter Heart Valves, HYGEIA Hospital, Athens
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Karakyriou M, Hadjimiltiades S, Meditskou S, Nenopoulou E, Efthimiadis G, Vogazianos P, Karvounis C, Styliadis I. Embolization after percutaneous coronary intervention in acute coronary syndrome. Saphenous vein grafts versus native coronary arteries. Herz 2014; 40 Suppl 1:36-42. [PMID: 25471205 DOI: 10.1007/s00059-014-4184-0] [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] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Revised: 10/27/2014] [Accepted: 11/02/2014] [Indexed: 11/29/2022]
Abstract
AIMS The aim of this study was to assess the occurrence of distal embolization and to quantify the amount of embolic material captured during stent implantation in native coronary arteries, as compared with saphenous vein grafts (SVG) in patients at different time periods after an acute coronary syndrome. PATIENTS AND METHODS In all, 104 patients presenting with unstable or stable angina underwent percutaneous coronary intervention (PCI) in 107 vessels and stent implantation in 112 lesions, 53 % of which were in SVG. RESULTS Device deployment and retrieval was successful in 111 lesions. Embolic material was detected in 74 % of the protection devices. Early PCI, during a 2-week period after the last ischemic episode, was associated with larger embolic load, especially in the right coronary artery. The length of the lesion was the only preprocedural independent variable that was found to be a significant predictor for the presence of emboli (p = 0.002). The stent diameter and the maximum dilatation pressure were the two procedural variables found to be significant predictors for the presence of emboli (p = 0.025 and p = 0.008, respectively). The irregularity of the lesion and the number of stents deployed were found to have a predictive correlation to the total area of the embolic particles (p = 0.04 and p = 0.005, respectively). CONCLUSION Distal embolization of atherosclerotic debris is a frequent phenomenon after PCI not only in SVG but also in native vessels. The amount of embolic material seems to be related to the atherosclerotic burden of the vessel and to the early timing of the procedure as related to acute coronary syndrome.
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Affiliation(s)
- M Karakyriou
- Department of Cardiology, AHEPA Hospital, Aristotle University, Thessaloniki, Greece,
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Fusaro M, Fusaro M, Noale M, Tripepi G, D'angelo A, Miozzo D, Gallieni M, Study Group PV, Tsamelesvili M, Dimitriadis C, Papagianni A, Raidis C, Efstratiadis G, Memmos D, Mutluay R, Konca Degertekin C, Derici U, Deger SM, Akkiyal F, Gultekin S, Gonen S, Tacoy G, Arinsoy T, Sindel S, Sanchez-Perales C, Vazquez E, Merino E, Perez Del Barrio P, Borrego FJ, Borrego MJ, Liebana A, Krzanowski M, Janda K, Dumnicka P, Krasniak A, Sulowicz W, Kim YO, Yoon SA, Yun YS, Song HC, Kim BS, Cheong MA, Pasch A, Farese S, Floege J, Jahnen-Dechent W, Ohtake T, Ohtake T, Furuya R, Iwagami M, Tsutsumi D, Mochida Y, Ishioka K, Oka M, Maesato K, Moriya H, Hidaka S, Kobayashi S, Guedes A, Malho Guedes A, Pinho A, Fragoso A, Cruz A, Mendes P, Morgado E, Bexiga I, Silva AP, Neves P, Oyake N, Suzuki K, Itoh S, Yano S, Turkmen K, Kayikcioglu H, Ozbek O, Saglam M, Toker A, Tonbul HZ, Gelev S, Trajceska L, Srbinovska E, Pavleska S, Amitov V, Selim G, Dzekova P, Sikole A, Bouarich H, Lopez S, Alvarez C, Arribas I, DE Sequera P, Rodriguez D, Fusaro M, Fusaro M, Noale M, Tripepi G, D'angelo A, Miozzo D, Gallieni M, Study Group PV, Tanaka S, Kanemitsu T, Sugahara M, Kobayashi M, Uchida L, Ishimoto Y, Kotera N, Tanimoto S, Tanabe K, Hara K, Sugimoto T, Mise N, Goldstein B, Turakhia M, Arce C, Winkelmayer W, Zayed BED, Said K, Nishimura M, Nishimura M, Okamoto Y, Tokoro T, Nishida M, Hashimoto T, Iwamoto N, Takahashi H, Ono T, Nishimura M, Okamoto Y, Tokoro T, Sato N, Nishida M, Hashimoto T, Iwamoto N, Takahashi H, Ono T, Guedes A, Malho Guedes A, Cruz A, Morgado E, Pinho A, Fragoso A, Mendes P, Bexiga I, Silva AP, Neves P, Raimann J, Usvyat LA, Sands J, Levin NW, Kotanko P, Iwasaki M, Joki N, Tanaka Y, Ikeda N, Hayashi T, Kubo S, Imamura TA, Takahashi Y, Hirahata K, Imamura Y, Hase H, Claes K, Meijers B, Bammens B, Kuypers D, Naesens M, Vanrenterghem Y, Evenepoel P, Boscutti G, Calabresi L, Bosco M, Simonelli S, Boer E, Vitali C, Martone M, Mattei PL, Franceschini G, Baligh E, Zayed BED, Said K, El-Shafey E, Ezaat A, Zawada A, Rogacev K, Hummel B, Grun O, Friedrich A, Rotter B, Winter P, Geisel J, Fliser D, Heine GH, Makino JI, Makino KS, Ito T, Genovesi S, Santoro A, Fabbrini P, Rossi E, Pogliani D, Stella A, Bonforte G, Remuzzi G, Bertoli S, Pozzi C, Gallieni M, Pasquali S, Cagnoli L, Conte F, Santoro A, Buzadzic I, Tosic J, Dimkovic N, Djuric Z, Popovic J, Pejin Grubisa I, Barjaktarevic N, DI Napoli A, DI Lallo D, Salvatori MF, Franco F, Chicca S, Guasticchi G, Onofriescu M, Hogas S, Luminita V, Mugurel A, Gabriel V, Laura F, Irina M, Adrian C, Bosch E, Baamonde E, Culebras C, Perez G, El Hayek B, Ramirez JI, Ramirez A, Garcia C, Lago M, Toledo A, Checa MD, Taira T, Hirano T, Nohtomi K, Hyodo T, Chiba T, Saito A, Kim YK, Song HC, Choi EJ, Yang CW, Kim YS, Lim PS, Ming Ying W, Ya-Chung J, Zaripova I, Kayukov I, Essaian A, Nimgirova A, Young H, Dungey M, Watson EL, Baines R, Burton JO, Smith AC, Joki N, Iwasaki M, Tanaka Y, Kubo S, Hayashi T, Ikeda N, Yamazaki K, Hase H, Bossola M, Colacicco L, Scribano D, Vulpio C, Tazza L, Okada T, Okada N, Michibata I, Yura T, Montero N, Soler M, Pascual M, Barrios C, Marquez E, Rodriguez E, Orfila MA, Cao H, Arcos E, Comas J, Pascual J, Ferrario M, Garzotto F, Sironi T, Monacizzo S, Basso F, Garzotto F, Cruz DN, Moissl U, Tetta C, Signorini MG, Cerutti S, Ronco C, Mostovaya I, Grooteman M, Van den Dorpel M, Penne L, Van der Weerd N, Mazairac A, Den Hoedt C, Levesque R, Nube M, Ter Wee P, Bots M, Blankestijn P, Liu J, MA KL, Zhang X, Liu BC, Vladu ID, Mustafa R, Cana-Ruiu D, Vaduva C, Grauntanu C, Mota E, Singh R, Abbasian N, Stover C, Brunskill N, Burton J, Abbasian N, Herbert K, Bevington A, Brunskill N, Burton J, Wu M, Tang RN, Gao M, Liu H, Chen L, LV LL, Liu BC, Nikodimopoulou M, Liakos S, Kapoulas S, Karvounis C, Fedak D, Kuzniewski M, Paulina D, Kusnierz-Cabala B, Kapusta M, Solnica B, Sulowicz W, Junque A, Vicent ES, Moreno L, Fulquet M, Duarte V, Saurina A, Pou M, Macias J, Lavado M, Ramirez de Arellano M, Ryuzaki M, Nakamoto H, Kinoshita S, Kobayashi E, Takimoto C, Shishido T, Enia G, Torino C, Tripepi R, Panuccio V, Postorino M, Clementi A, Garozzo M, Bonanno G, Boito R, Natale G, Cicchetti T, Chippari A, Logozzo D, Alati G, Cassani S, Sellaro A, Zoccali C, Quiroga B, Verde E, Abad S, Vega A, Goicoechea M, Reque J, Lopez-Gomez JM, Luno J, Cabre Menendez C, Moles V, Vives JP, Villa D, Vinas J, Compte T, Arruche M, Diaz C, Soler J, Aguilera J, Martinez Vea A, De Mauri A, David P, Conte MM, Chiarinotti D, Ruva CE, De Leo M, Bargnoux AS, Morena M, Jaussent I, Chalabi L, Bories P, Dion JJ, Henri P, Delage M, Dupuy AM, Badiou S, Canaud B, Cristol JP, Fabbrini P, Sironi E, Pieruzzi F, Galbiati E, Vigano MR, Stella A, Genovesi S, Anpalakhan S, Anpalakhan S, Rocha S, Chitalia N, Sharma R, Kaski JC, Chambers J, Goldsmith D, Banerjee D, Cernaro V, Lacquaniti A, Lupica R, Lucisano S, Fazio MR, Donato V, Buemi M, Segalen I, Segalen I, Vinsonneau U, Tanquerel T, Quiniou G, Le Meur Y, Seibert E, Girndt M, Zohles K, Ulrich C, Kluttig A, Nuding S, Swenne C, Kors J, Werdan K, Fiedler R, Van der Weerd NC, Grooteman MP, Bots M, Van den Dorpel MA, Den Hoedt C, Nube MJ, Wetzels J, Swinkels DW, Blankestijn P, Ter Wee PM, Khandekar A, Khandge J, Lee JE, Moon SJ, Choi KH, Lee HY, Kim BS, Morena M, Tuaillon E, Jaussent I, Rodriguez A, Chenine L, Vendrell JP, Cristol JP, Canaud B, Sue YM, Tang CH, Chen YC, Sanchez-Perales C, Vazquez E, Segura P, Garcia Cortes MJ, Gil JM, Biechy MM, Liebana A, Poulikakos D, Shah A, Persson M, Banerjee D, Dattolo P, Amidone M, Amidone M, Michelassi S, Moriconi L, Betti G, Conti P, Rosati A, Mannarino A, Panichi V, Pizzarelli F, Klejna K, Naumnik B, Koc-Zorawska E, Mysliwiec M, Dimitrie S, Simona H, Mihaela O, Mugurel A, Gabriela O, Radu S, Octavian P, Adrian C, Akdam H, Akar H, Yenicerioglu Y, Kucuk O, Kurt Omurlu I, Goldsmith D, Thambiah S, Roplekar R, Manghat P, Manghat P, Fogelman I, Fraser W, Hampson G, Likaj E, Likaj E, Caco G, Seferi S, Rroji M, Barbullushi M, Thereska N, Onofriescu M, Hogas S, Luminita V, Mugurel A, Serban A, Carmen V, Cristian S, Silvia L, Covic A. Cardiovascular complications in CKD 5D. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs225] [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] [Indexed: 11/14/2022] Open
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Vassilikos V, Dakos G, Chatzizisis YS, Chouvarda I, Karvounis C, Maynard C, Maglaveras N, Paraskevaidis S, Stavropoulos G, Styliadis CI, Mochlas S, Styliadis I. Novel non-invasive P wave analysis for the prediction of paroxysmal atrial fibrillation recurrences in patients without structural heart disease. Int J Cardiol 2011; 153:165-72. [DOI: 10.1016/j.ijcard.2010.08.029] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2010] [Revised: 07/01/2010] [Accepted: 08/08/2010] [Indexed: 11/15/2022]
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Kaimakamis E, Bratsas C, Sichletidis L, Karvounis C, Maglaveras N. Screening of patients with Obstructive Sleep Apnea Syndrome using C4.5 algorithm based on non linear analysis of respiratory signals during sleep. Annu Int Conf IEEE Eng Med Biol Soc 2010; 2009:3465-9. [PMID: 19964987 DOI: 10.1109/iembs.2009.5334605] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
AIM To classify patients with possible diagnosis of Obstructive Sleep Apnea Syndrome (OSAS) into groups according to the severity of the disease using a decision tree producing algorithm based on nonlinear analysis of 3 respiratory signals instead of the use of full polysomnography. PATIENTS-METHODS Eighty-six consecutive patients referred to the Sleep Unit of a Pulmonology Department underwent full polysomnography and their tests were manually scored. Three nonlinear indices (Largest Lyapunov Exponent-LLE, Detrended Fluctuation Analysis-DFA and Approximate Entropy-APEN) were extracted from two respiratory signals (nasal cannula flow-F and thoracic belt-T). The oxygen saturation signal (SpO(2)) was also selected. The above measurements provided data to the C4.5 algorithm using a data mining application. RESULTS Two decision trees were produced using linear and nonlinear data from 3 respiratory signals. The discrimination between normal subjects and sufferers from OSAS presented an accuracy of 84.9% and a recall of 90.3% using the variables age, sex, DFA from F and Time with SpO(2)<90% (T90). The classification of patients into severity groups had an accuracy of 74.2% and a recall of 81.1% using the variables APEN from F, DFA from F and T90. CONCLUSION It is possible to have reliable predictions of the severity of OSAS using linear and nonlinear indices from only two respiratory signals during sleep instead of performing full polysomnography. The proposed algorithm could be used for screening patients suspected to suffer from OSAS.
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Affiliation(s)
- Evangelos Kaimakamis
- Lab of Medical Informatics, Medical School, Aristotle University of Thessaloniki, Greece.
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Efthimiadis GK, Pliakos C, Pagourelias ED, Parcharidou DG, Giannakoulas G, Kamperidis V, Hadjimiltiades S, Karvounis C, Gavrielidis S, Styliadis IH, Parcharidis G. Identification of high risk patients with hypertrophic cardiomyopathy in a northern Greek population. Cardiovasc Ultrasound 2009; 7:37. [PMID: 19631000 PMCID: PMC2724406 DOI: 10.1186/1476-7120-7-37] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2009] [Accepted: 07/26/2009] [Indexed: 12/28/2022] Open
Abstract
Background The percentage of hypertrophic cardiomyopathy (HCM) patients who are in high risk for Sudden Death (SD) constitutes only a minority of all HCM population but the incidence of SD in this subset is high (at least 5% annually). The identification of this small but important proportion of high risk HCM patients has been the clue in the clinical evaluation of these patients. Methods Our study cohort consisted from 123 patients with HCM who are currently followed up in our Institution. Five clinical risk factors were assessed: a family history of premature SD, unexplained syncope, Non Sustained Ventricular Tachycardia (NSVT) on 24-h ECG monitoring, Abnormal Blood Pressure Response (ABPR) during upright exercise testing and Maximum left ventricular Wall Thickness (MWT) ≥30 mm. The purpose of our study was the identification of high risk HCM patients coming from Northern Greece. Results Fifteen patients (12.2%) of the whole cohort had MWT ≥ 30 mm, 30 patients (24.4%) had an ABPR to exercise, 17 patients (13.8%) had episodes of NSVT in 24-h Holter monitoring, 17 patients (13.8%) suffered from syncope, and 8 patients (6.5%) had a positive family history of premature SD. Data analysis revealed that 74 patients (60.1%) had none risk factor. Twenty four patients (19.5%) had 1 risk factor, 17 patients (13.8%) had 2 risk factors, 4 patients (3.25%) had 3 risk factors, and 4 patients (3.25%) had 4 risk factors, while none patient had 5 risk factors. Twenty five patients (20.3%) had 2 or more risk factors. Conclusion This study for the first time confirms that, although a 60% of patients with HCM coming from a regional Greek population are in low risk for SD, a substantial proportion (almost 20%) carries a high risk for SD justifying prophylactic therapy with amiodaron or ICD implantation.
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Andrikopoulos G, Pipilis A, Goudevenos J, Tzeis S, Kartalis A, Oikonomou K, Karvounis C, Mantas J, Kyrpizidis C, Gotsis A, Paschidi M, Tsaknakis T, Pyrgakis V, Manolis AS, Boudoulas H, Vardas PE, Stefanadis CI, Lekakis J. Epidemiological characteristics, management and early outcome of acute myocardial infarction in Greece: the HELlenic Infarction Observation Study. Hellenic J Cardiol 2007; 48:325-334. [PMID: 18196654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023] Open
Abstract
INTRODUCTION Taking into consideration the need for an updated survey on acute myocardial infarction (AMI) in Greece, we conducted the HELIOS study (HELlenic Infarction Observation Study), aiming to recruit a cohort of AMI patients that would be representative of the total AMI population. METHODS The HELIOS study is a countrywide registry of AMI, conducted during 2005-2006 by the Prevention Working Group of the Hellenic Cardiological Society. We enrolled 1840 AMI pts from 31 hospitals (mean age 68 +/- 13 years, 75% men, 1096 ST-elevation myocardial infarction [STEMI] patients), with a proportional representation of all types of hospitals and of all geographical areas. The study recruited 10% of the total number of AMI cases that occur per year on a countrywide basis, taking into consideration the seasonal variations of the population in each geographical area. RESULTS Despite demographic changes, there is still a male predominance among AMI patients and an increasing prevalence of cardiometabolic risk factors, (obesity, diabetes, hypertension) compared to previous AMI studies in the Greek population. Almost 60% of STEMI patients received reperfusion therapy, but the median value of the pain-to-door time was 180 minutes. The rates of administration of evidence-based medications during hospitalisation or upon discharge and the short-term mortality rates were in accordance with those observed in other international AMI registries. CONCLUSIONS The HELIOS study provided valuable insights into the epidemiology, clinical characteristics, management and outcome of patients with AMI in the Greek population. Although there are notable advances compared to previous reports, there is still considerable room for improvement and we should particularly focus on minimising the time delay between arrival at the emergency department and performance of reperfusion, by either pharmacological or catheter-based approaches.
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Paraskevaidis S, Kazinakis G, Girasis C, Kalpidis P, Tsigaras S, Karvounis C, Parharidis G. Primary percutaneous coronary intervention in an acute myocardial infarction due to the occlusion of the left main coronary artery. Hellenic J Cardiol 2007; 48:368-372. [PMID: 18196661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023] Open
Abstract
A 75-year-old woman with no prior medical history was admitted to the hospital because of retrosternal pain for six hours, presenting in a state of cardiogenic shock, specifically hypotension, dyspnoea and slight confusion. Her admission ECG showed ST-segment elevation in the anterolateral leads. Having been started on aspirin, clopidogrel, heparin and dopamine, the patient was immediately transferred to the catheterisation laboratory. The coronary angiogram showed total occlusion of the bifurcation of the left main (LM) coronary artery and some collateral flow from the right coronary artery (RCA), the latter itself presenting multiple critical stenoses. Percutaneous coronary intervention (PCI) was performed with deployment of stents at the LM bifurcation, which resulted in the relief of the obstruction, the restoration of the flow in the left coronary artery and the immediate clinical improvement of the patient. The patient left the hospital in good general condition after being treated for ten days and underwent a successful second PCI in the RCA two months later.
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Affiliation(s)
- Stelios Paraskevaidis
- First Cardiology Department, Aristotle University of Thessaloniki, AHEPA Hospital, Thessaloniki, Greece.
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Maglaveras N, Chouvarda I, Koutkias VG, Gogou G, Lekka I, Goulis D, Avramidis A, Karvounis C, Louridas G, Balas EA. The Citizen Health System (CHS): A Modular Medical Contact Center Providing Quality Telemedicine Services. ACTA ACUST UNITED AC 2005; 9:353-62. [PMID: 16167689 DOI: 10.1109/titb.2005.854511] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
In the context of the Citizen Health System (CHS) project, a modular Medical Contact Center (MCC) was developed, which can be used in the monitoring, treatment, and management of chronically ill patients at home, such as diabetic or congestive heart failure patients. The virtue of the CHS contact center is that, using any type of communication and telematics technology, it is able to provide timely and preventive prompting to the patients, thus, achieving better disease management. In this paper, we present the structure of the CHS system, describing the modules that enable its flexible and extensible architecture. It is shown, through specific examples, how quality of healthcare delivery can be increased by using such a system.
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Affiliation(s)
- Nicos Maglaveras
- Laboratory of Medical Informatics, Medical School, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
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Maglaveras N, Gogou G, Chouvarda I, Koutkias V, Lekka I, Giaglis G, Adamidis D, Karvounis C, Louridas G, Goulis D, Avramidis A, Balas EA. Communication infrastructure in a contact center for home care monitoring of chronic disease patients. Proc AMIA Symp 2002:479-83. [PMID: 12463870 PMCID: PMC2244299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023] Open
Abstract
The Citizen Health System (CHS) is a European Commission (EC) funded project in the field of IST for Health. Its main goal is to develop a generic contact center which in its pilot stage can be used in the monitoring, treatment and management of chronically ill patients at home in Greece, Spain and Germany. Such contact centers, which can use any type of communication technology, and can provide timely and preventive prompting to the patients are envisaged in the future to evolve into well-being contact centers providing services to all citizens. In this paper, we present the structure of such a generic contact center and in particular the telecommunication infrastructure, the communication protocols and procedures, and finally the educational modules that are integrated into this contact center. We discuss the procedures followed for two target groups of patients where two randomized control clinical trials are under way, namely diabetic patients with obesity problems, and congestive heart failure patients. We present examples of the communication means between the contact center medical personnel and these patients, and elaborate on the educational issues involved.
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Affiliation(s)
- N Maglaveras
- The Medical School, Aristotle University, Thessaloniki, Macedonia 54124, Greece
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