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Patrone L, Falcone G, Coscas R, Lichaa H, Antaredja M, Fanelli F, Blessing E. Retrograde Peroneal Artery Approach to Treat Infra-Inguinal Arterial Chronic Total Occlusions: A Multicentre Experience and Technical Considerations. J Clin Med 2024; 13:2770. [PMID: 38792312 PMCID: PMC11121828 DOI: 10.3390/jcm13102770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 04/19/2024] [Accepted: 05/01/2024] [Indexed: 05/26/2024] Open
Abstract
Background/Objectives: Retrograde access of the peroneal artery (PA) is considered technically challenging and at risk of bleeding. The aim of this multicentre retrospective study was to assess the safety, feasibility, and technical success of this access route for infrainguinal endovascular recanalizations. Methods: We retrospectively analyzed 186 consecutive patients treated over a 7-year period (May 2014-August 2021) who underwent endovascular recanalization of infra-inguinal lesions using a PA access route. In all cases, retrograde PA access was obtained following a failed attempt to cross the occlusion via the antegrade route. Results: Among the 186 patients, 120 were males (60.5%) and the mean age was 76.8 ± 10.7 years old (44-94 years). One hundred and thirteen patients (60.7%) suffered from chronic limb threatening ischemia (CLTI). All patients presented with chronic total occlusions (CTO) and a failed conventional antegrade recanalization attempt. Retrograde access was performed under angiographic guidance in 185 cases (99.5%). It was successfully established in 171 cases (91.9%). The total rate of retrograde puncture-related complications was 2.1% (two puncture site bleedings of which one necessitated fasciotomy and two cases of arteriovenous fistulas managed conservatively). The Major Adverse Event (MAE) rate at 30 days was 1.6% (3/186). Conclusions: Retrograde recanalization of challenging infra-inguinal lesions via PA is safe and effective in experienced hands.
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Affiliation(s)
- Lorenzo Patrone
- West London Vascular and Interventional Centre, Northwick Park Hospital, Harrow HA1 3UJ, UK;
| | - Gianmarco Falcone
- Interventional Radiology Department, Ospedale Careggi, 50134 Firenze, Italy; (G.F.); (F.F.)
| | - Raphael Coscas
- Department of Vascular Surgery, Ambroise Paré University Hospital, Assistance Publique-Hôpitaux de Paris, 92104 Boulogne-Billancourt, France;
| | - Hady Lichaa
- Tennessee Health Science Center, Ascension Saint Thomas Heart, Nashville, TN 37203, USA;
| | - Muliadi Antaredja
- Department of Angiology, Clinic for Vascular Medicine, University Heart and Vascular Center, University Hospital Hamburg-Eppendorf, 20251 Hamburg, Germany;
| | - Fabrizio Fanelli
- Interventional Radiology Department, Ospedale Careggi, 50134 Firenze, Italy; (G.F.); (F.F.)
| | - Erwin Blessing
- Department of Angiology, Clinic for Vascular Medicine, University Heart and Vascular Center, University Hospital Hamburg-Eppendorf, 20251 Hamburg, Germany;
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Patrone L, Ysa A, Covani M, Lichaa H. Antegrade Crossing Techniques for Hard Proximal Occlusion Caps Without the Use of Dedicated Chronic Total Occlusion Devices: A Pictorial Review. J Endovasc Ther 2023:15266028231195538. [PMID: 37646129 DOI: 10.1177/15266028231195538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
CLINICAL IMPACT Infra-inguinal Chronic Total Occlusions recanalisation is considered technically challenging. The conventional manipulation of standard guidewires and catheters has proven to be successful in a considerable percentage of cases but success rate could dramatically drop in presence of challenging lesions. The additional use of retrograde access and re-entry devices could increase technical success but could negatively affect procedural time and overall costs. Twenty different techniques of Chronic Total Occlusions antegrade crossing are hereby described with appropriate schematic representations. The aim is to help operators to apply them in specific anatomy subsets and clinical presentations and ultimately to increase procedural success rate.
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Affiliation(s)
- Lorenzo Patrone
- West London Vascular and Interventional Centre, Northwick Park Hospital, Harrow, UK
| | - August Ysa
- Department of Vascular Surgery, Hospital Universitario Cruces, Barakaldo, Spain
| | - Marco Covani
- Division of Cardiology, Parma University Hospital, Parma, Italy
| | - Hady Lichaa
- Cardiology Division, University of Tennessee at Nashville, Murfreesboro, TN, USA
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Dubosq M, Renard R, Jayet J, Mercier L, Javerliat I, Castier Y, Coggia M, Coscas R. Single Primary Retrograde Access to Treat Femoro-Popliteal Occlusive Lesions. J Endovasc Ther 2023:15266028231188868. [PMID: 37515490 DOI: 10.1177/15266028231188868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/31/2023]
Abstract
INTRODUCTION The retrograde puncture of a distal artery is considered a bailout procedure in case of anterograde approach failure for peripheral artery disease (PAD) treatment. A single primary retrograde access has been suggested as an efficient and safe option. As scant data are available, we present our results using this approach. MATERIAL AND METHODS Between August 2019 and October 2022, we performed this technique in selected patients with femoro-popliteal PAD. Chronic total occlusions (CTOs) were selected on the basis of the CTOP classification. An ultrasound-guided retrograde puncture of a tibial artery at the ankle level was performed, followed by the preferential use of 4F materials. Hemostasis of the puncture site was obtained using manual compression. Postoperative duplex scan examination systematically included an evaluation of the punctured artery. Demographics, intraoperative, and follow-up data were collected retrospectively. The results are expressed as means with standard deviations and numbers with percentages when appropriate. RESULTS In total, 55 procedures were performed in 46 patients (9 bilateral). Of these, 57% (N=26) were considered at risk for femoral puncture (obesity, history of groin surgery, challenging crossover approach) and 54% (N=25) presented with critical limb-threatening ischemia (CLTI). The TASC-II femoro-popliteal classification was generally B (60%) and also C (33%) or D (7%). Mean lesion length was 105.6±49.4 mm and 65% were CTOs. Most patients were operated in an outpatient setting (N=25; 54%) under potentialized local anesthesia (N=41, 89%). The punctured site was the posterior tibial artery in 73% (N=40). The procedure time was 65.1±25.7 minutes, and the fluoroscopy time was 10.7±8.5 minutes. The technical success rate was 100%. There were no intraoperative complications. All patients could walk the same day. One CLTI patient presented an erysipelas related to the puncture in postoperative period. At 30 days, the primary patency of the treated and the punctured arteries were 98% and 100%, respectively. CONCLUSION A single primary retrograde access can be used safely to treat femoro-popliteal PAD. It represents a valuable alternative to the femoral puncture and allows fast ambulation. Prospective and long-term studies on larger populations are necessary to confirm our results. CLINICAL IMPACT This study demonstrates that a single primary retrograde access can be used safely without damaging the punctured artery to treat femoro-popliteal lesions, especially in claudicant patients. Chronic total occlusions can be treated successfully using this technique. This approach represents a valuable alternative to the femoral puncture and allows fast ambulation without risk of major bleeding.
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Affiliation(s)
- Maxime Dubosq
- Department of Vascular Surgery, Ambroise Paré University Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Régis Renard
- Department of Vascular and Thoracic Surgery, Bichat Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Jérémie Jayet
- Department of Vascular Surgery, Ambroise Paré University Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Lucie Mercier
- Department of Vascular Surgery, Ambroise Paré University Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Isabelle Javerliat
- Department of Vascular Surgery, Ambroise Paré University Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Yves Castier
- Department of Vascular and Thoracic Surgery, Bichat Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Marc Coggia
- Department of Vascular Surgery, Ambroise Paré University Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Raphael Coscas
- Department of Vascular Surgery, Ambroise Paré University Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
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Rippel K, Ruhnke H, Jehs B, Kroencke T, Scheurig-Muenkler C. Technical success and associated economic implications of conventional re-entry devices in subintimal recanalization of femoro-popliteal chronic total occlusions. Diagn Interv Radiol 2023; 29:492-499. [PMID: 36993776 PMCID: PMC10679609 DOI: 10.4274/dir.2022.221107] [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: 11/08/2021] [Accepted: 03/07/2022] [Indexed: 01/14/2023]
Abstract
PURPOSE Re-entry devices contribute to the high success rate of subintimal recanalization of chronic total occlusions (CTO). However, to date, there are no studies comparing the available conventional re-entry devices concerning the impact of their technical success on economic aspects, as these devices differ greatly in their acquisition costs. This prospective observational study intends to contribute to this question. METHODS Prior to the start of the prospective study, all previous applications of the Outback® in femoro-popliteal CTO since its introduction to our hospital were analyzed retrospectively (n = 31). From June 2018 until January 2020, all patients with femoro-popliteal CTO treated with clear subintimal recanalization were included (n = 109). In the case of failed spontaneous re-entry, either the OffRoad® (study arm I, n = 20) or the Enteer® catheter (study arm II, n = 20) was used. If assisted re-entry failed, the Outback® device was used as a bailout. Baseline demographic and clinical data, morphologic characteristics, and technical success were documented. Additional per-patient costs due to the use of re-entry devices were analyzed. RESULTS A retrospective evaluation of all Outback® applications revealed a technical success rate of 97% (30/31). In the prospective study, 63% (68/109) were successfully treated without using re-entry devices. The overall procedural success was 95% (103/109). In study arm I, the OffRoad® achieved a success rate of 45% (9/20), with a subsequent successful application of the Outback® in 80% (8/10) of the failed cases. In study arm II, the Enteer® was successfully employed in 60% (12/20) of cases, and the Outback® was then used successfully in a further 62% (5/8) of cases. Too large a distance between the device and the target lumen was a knockout criterion for all tested devices, leading to a subgroup analysis with the exclusion of three cases, resulting in a success rate of 47% for the OffRoad® and 67% for the Enteer® device. Furthermore, in severe calcification, only the Outback® reliably enabled revascularization. Significant savings of almost €600 were only achieved in study arm II according to German prices. CONCLUSION With proper patient selection, a gradual approach with the Enteer® as the primarily used device, with the Outback® used additionally in case of failure, leads to significant savings and can be recommended. In severe calcification, the Outback® should be used as the primary device.
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Affiliation(s)
- Katharina Rippel
- Clinic of Diagnostic and Interventional Radiology, University Hospital Augsburg, Augsburg, Germany
| | - Hannes Ruhnke
- Clinic of Diagnostic and Interventional Radiology, University Hospital Augsburg, Augsburg, Germany
| | - Bertram Jehs
- Clinic of Diagnostic and Interventional Radiology, University Hospital Augsburg, Augsburg, Germany
| | - Thomas Kroencke
- Clinic of Diagnostic and Interventional Radiology, University Hospital Augsburg, Augsburg, Germany
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Kinariwala D, Taylor AC, Wilkins LR. Percutaneous Intentional Extraluminal Recanalization of Chronic Total Occlusions: A Review of Reentry Devices. Semin Intervent Radiol 2023; 40:144-150. [PMID: 37333749 PMCID: PMC10275678 DOI: 10.1055/s-0043-57260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/20/2023]
Abstract
Percutaneous intentional extraluminal recanalization (PIER) is an endovascular subintimal crossing technique used to treat chronic total occlusions (CTOs) of the peripheral arteries. Intraluminal revascularization remains the standard over PIER when technically feasible; however, when intraluminal approaches fail, PIER may be preferred prior to pursuit of surgical bypass grafting. The major cause of failure of PIER is inability to reenter the true lumen after crossing the CTO. Therefore, several reentry devices and endovascular techniques have been developed to allow for the operators to safely and quickly access the true lumen distal to the occlusion. Reentry devices currently available on the market include the Pioneer Plus catheter, Outback Elite catheter, OffRoad catheter, Enteer catheter, and GoBack catheter. These devices have unique methods of use and specific advantages with regard to their technical success along with reduced procedural and fluoroscopic time. In addition, there are other endovascular techniques available that may facilitate true lumen reentry and these will also be reviewed.
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Affiliation(s)
- Dhara Kinariwala
- Division of Vascular and Interventional Radiology, Department of Radiology and Medical Imaging, University of Virginia, Charlottesville, Virginia
| | - Amy C. Taylor
- Division of Vascular and Interventional Radiology, Department of Radiology and Medical Imaging, University of Virginia, Charlottesville, Virginia
| | - Luke R. Wilkins
- Division of Vascular and Interventional Radiology, Department of Radiology and Medical Imaging, University of Virginia, Charlottesville, Virginia
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Korosoglou G, Schmidt A, Lichtenberg M, Torsello G, Grözinger G, Mustapha J, Varcoe RL, Wulf I, Heilmeier B, Müller OJ, Zeller T, Blessing E, Langhoff R. Best crossing of peripheral chronic total occlusions. VASA 2023; 52:147-159. [PMID: 36924047 DOI: 10.1024/0301-1526/a001066] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
Together with colleagues from different disciplines, including cardiologists, interventional radiologists and vascular surgeons, committee members of the of the German Society of Angiology (Deutsche Gesellschaft für Angiologie [DGA]), developed a novel algorithm for the endovascular treatment of peripheral chronic total occlusive lesions (CTOs). Our aim is to improve patient and limb related outcomes, by increasing the success rate of endovascular procedures. This can be achieved by adherence to the proposed crossing algorithm, aiding the standardization of endovascular procedures. The following steps are proposed: (i) APPLY Duplex sonography and if required 3D techniques such as computed tomography or magnetic resonance angiography. This will help you to select the optimal access site. (ii) EVALUATE the CTO cap morphology and distal vessel refilling sites during diagnostic angiography, which are potential targets for a retrograde access. (iii) START with antegrade wiring strategies including guidewire (GW) and support catheter technology. Use GW escalation strategies to penetrate the proximal cap of the CTO, which may usually be fibrotic and calcified. (iv) STOP the antegrade attempt depending on patient specific parameters and the presence of retrograde options, as evaluated by pre-procedural imaging and during angiography. (v) In case of FAILURE, consider advanced bidirectional techniques and reentry devices. (vi) In case of SUCCESS, externalize the GW and treat the CTO. Manage the retrograde access at the end of the endovascular procedure. (vii) STOP the procedure if no progress can be obtained within 3 hours, in case of specific complications or when reaching maximum contrast administration based on individual patient's renal function. Consider radiation exposure both for patients and operators. In this manuscript we systematically follow and explain each of the steps (i)-(vi) based on practical examples from our daily routine. We strongly believe that the integration of this algorithm in the daily practice of endovascular specialists, can improve vessel and patient specific outcomes.
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Affiliation(s)
| | - Andrej Schmidt
- Department of Interventional Angiology, University Hospital Leipzig, Germany
| | | | - Giovanni Torsello
- Institute for Vascular Research, Franziskus Hospital, University Hospital Münster, Germany
| | - Gerd Grözinger
- Department of Radiology, University of Tübingen, Germany
| | - Jihad Mustapha
- Advanced Cardiac & Vascular Centers, Grand Rapids, Michigan, USA
| | - Ramon L Varcoe
- Department of Vascular Surgery, University of New South Wales, Sydney, Australia
| | - Ito Wulf
- Cardiovascular Center Oberallgaeu-Kempten, Allgaeu Hospital Group, Immenstadt, Germany
| | | | - Oliver J Müller
- Department of Internal Medicine III, German Centre for Cardiovascular Research, University Hospital Kiel, Partner Site Hamburg/Kiel/Lübeck, Germany
| | - Thomas Zeller
- Department of Interventional Angiology, University Hospital Freiburg/Bad Krozingen, Germany
| | - Erwin Blessing
- Department of Angiology, University Heart and Vascular Center, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Ralf Langhoff
- Brandenburg Medical School Theodor Fontane, Campus, Clinic Brandenburg, Berlin, Germany
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Korosoglou G, Schmidt A, Lichtenberg M, Torsello G, Grözinger G, Mustapha J, Varcoe RL, Zeller T, Blessing E, Langhoff R. Crossing Algorithm for Infrainguinal Chronic Total Occlusions: An Interdisciplinary Expert Opinion Statement. JACC Cardiovasc Interv 2023; 16:317-331. [PMID: 36792256 DOI: 10.1016/j.jcin.2022.11.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 11/07/2022] [Accepted: 11/15/2022] [Indexed: 02/16/2023]
Abstract
A crossing algorithm was developed for the endovascular treatment of peripheral chronic total occlusive lesions (CTOs) to educate, guide, and appropriately influence clinical practice aiming at harmonization and standardization of endovascular procedures. The following steps are proposed: One, duplex sonography and if required computed tomography or magnetic resonance angiography for the selection of the optimal access site. Two, angiographic evaluation of the proximal/distal cap morphology, presence of collaterals at the origin of the proximal cap and at the distal vessel refilling site. In addition, evaluation of distal vessels, including their diameters and quality, and the presence of calcification or stents within the occlusion zone. Three, antegrade wiring strategies, guidewire (GW) and support catheter technology, as well as GW escalation strategies. Stop the antegrade attempt depending on clinical indication for peripheral artery disease treatment and the presence of retrograde options. Four, retrograde access site, support catheter, or sheath insertion and wiring technology from distally. Five, considering strategy change when progress cannot by achieved, using advanced bidirectional techniques and re-entry devices. Six, in case of successful GW passage from retrograde, GW externalization and treatment from antegrade. Management of the retrograde access by internal or external hemostasis at the end of the procedure. Alternatively, stop the procedure if no progress can be obtained within 3 hours or in case of specific complications. By establishing the algorithm in the daily routine of endovascular specialists, improvements in vessel- and patient-specific outcomes are anticipated. In addition, future research, and continuous collaboration between experts is warranted.
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Affiliation(s)
| | - Andrej Schmidt
- Division of Angiology, Department of Internal Medicine, Neurology and Dermatology, University Hospital Leipzig, Leipzig, Germany
| | | | - Giovanni Torsello
- University Hospital Münster, Institute for Vascular Research, Franziskus Hospital, Münster, Germany
| | - Gerd Grözinger
- University of Tübingen, Department of Radiology, Tübingen, Germany
| | - Jihad Mustapha
- Advanced Cardiac & Vascular Centers, Grand Rapids, Michigan, USA
| | - Ramon L Varcoe
- University of New South Wales, Department of Vascular Surgery, Sydney, New South Wales, Australia
| | - Thomas Zeller
- University Hospital Freiburg/Bad Krozingen, Department of Interventional Angiology, Bad Krozingen, Germany
| | - Erwin Blessing
- University Heart and Vascular Center, Department of Angiology, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Ralf Langhoff
- Brandenburg Medical School Theodor Fontane, Campus, Clinic Brandenburg, Brandenburg an der Havel, Berlin, Germany
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Patrone L, Theivacumar NS, Dharmarajah B, Thulasidasan N, Diamantopoulos A, Palena LM, Antaredja M, Tilemann L, Blessing E. Target Balloon-Assisted Antegrade and Retrograde Use of Re-Entry Catheters in Complex Chronic Total Occlusions. J Cardiovasc Dev Dis 2023; 10:jcdd10020053. [PMID: 36826548 PMCID: PMC9963594 DOI: 10.3390/jcdd10020053] [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: 12/12/2022] [Revised: 01/10/2023] [Accepted: 01/11/2023] [Indexed: 02/03/2023] Open
Abstract
Purpose, Retrograde recanalizations have gained increasing recognition in complex arterial occlusive disease. Re-entry devices are a well described adjunct for antegrade recanalizations. We present our experience with target balloon-assisted antegrade and retrograde recanalizations using re-entry devices in challenging chronic total occlusions. MATERIALS AND METHODS We report data from a retrospective multicenter registry. Eligibility criteria included either antegrade or retrograde use of the OutbackTM or GoBackTM re-entry catheter in combination with a balloon as a target to accomplish wire passage, when conventional antegrade and retrograde recanalization attempts had been unsuccessful. Procedural outcomes included technical success (defined as wire passage though the occlusion and delivery of adjunctive therapy with <30% residual stenosis at final angiogram), safety (periprocedural complications, e.g., bleeding, vessel injury, or occlusion of the artery at the re-entry site, and distal embolizations), and clinical outcome (amputation-free survival and freedom from target lesion revascularization after 12-months follow-up). RESULTS Thirty-six consecutive patients underwent target balloon-assisted recanalization attempts. Fourteen (39 %) patients had a history of open vascular surgery in the index limb. Fifteen patients were claudications (Rutherford Class 2 or 3, 21 presented with chronic limb threatening limb ischemia (Rutherford Class 4 to 6). The locations of the occlusive lesions were as follows: iliac arteries in 3 cases, femoropopliteal artery in 39 cases, and in below-the-knee arteries in 12 cases. In 15 cases, recanalization was attempted in multilevel occlusions. Retrograde access was attempted in 1 case in the common femoral artery, in the femoropopliteal segment in 10 cases, in below-the-knee arteries in 23 cases, and finally in 2 patients via the brachial artery. In 10 cases, the re-entry devices were inserted via the retrograde access site. Technical success was achieved in 34 (94 %) patients. There were 3 periprocedural complications, none directly related to the target balloon-assisted re-entry maneuver. Amputation-free survival was 87.8 % and freedom from clinically driven target lesion revascularization was 86.6 % after 12-months follow-up. CONCLUSION Target balloon-assisted use of re-entry devices in chronic total occlusions provides an effective and safe endovascular adjunct, when conventional antegrade and retrograde recanalization attempts have failed.
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Affiliation(s)
- Lorenzo Patrone
- West London Vascular and Interventional Centre, London North West University Healthcare NHS Trust, Harrow HA1 3UJ, UK
| | - Nada Selva Theivacumar
- West London Vascular and Interventional Centre, London North West University Healthcare NHS Trust, Harrow HA1 3UJ, UK
| | - Brahman Dharmarajah
- West London Vascular and Interventional Centre, London North West University Healthcare NHS Trust, Harrow HA1 3UJ, UK
- Section of Vascular Surgery, Department of Surgery & Cancer, Imperial College, London SW7 2AZ, UK
| | - Narayanan Thulasidasan
- Department of Interventional Radiology, Guy’s and St. Thomas’ NHS Foundation, Trust, London SE1 7EH, UK
| | - Athanasios Diamantopoulos
- Department of Interventional Radiology, Guy’s and St. Thomas’ NHS Foundation, Trust, London SE1 7EH, UK
| | - Luis Mariano Palena
- Endovascular Surgery Unit, Maria Cecilia Hospital—GVM Care & Research, 48033 Cotignola, Italy
| | - Muliadi Antaredja
- University Heart and Vascular Center, University Hospital Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Lisa Tilemann
- University Heart and Vascular Center, University Hospital Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Erwin Blessing
- University Heart and Vascular Center, University Hospital Hamburg-Eppendorf, 20246 Hamburg, Germany
- Correspondence: ; Tel.: +49-40-7410-53178; Fax: +49-40-7410-53272
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