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Palmisano P, Guerra F, Aspromonte V, Dell'Era G, Pellegrino PL, Laffi M, Uran C, De Bonis S, Accogli M, Dello Russo A, Patti G, Santoro F, Torriglia A, Nigro G, Bisignani A, Coluccia G, Stronati G, Russo V, Ammendola E. Effectiveness and safety of implantable loop recorder and clinical utility of remote monitoring in patients with unexplained, recurrent, traumatic syncope. Expert Rev Med Devices 2023; 20:45-54. [PMID: 36631432 DOI: 10.1080/17434440.2023.2168189] [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] [Indexed: 01/13/2023]
Abstract
BACKGROUND Implantable loop recorder (ILR) is still underutilized in clinical practice, especially in the setting of elderly patients with recurrent, traumatic, unexplained syncope. Data on the actual risk of traumatic syncopal recurrence during ILR monitoring in this specific patient setting are lacking. RESEARCH DESIGN AND METHODS Prospective, multicentre registry enrolling consecutive patients undergoing ILR insertion for unexplained, recurrent, traumatic syncope. In a proportion of enrolled patients, remote monitoring (RM) was used for device follow-up. The risk of traumatic and non-traumatic syncopal recurrences during ILR observation were prospectively assessed. RESULTS A total of 483 consecutive patients (68±14 years, 59% male) were enrolled. During a median follow-up of 18 months, a final diagnosis was reached in 270 patients (55.9%). The risk of syncopal and traumatic syncopal recurrence was of 26.5 and 9.3%, respectively. RM significantly reduced the time to diagnosis (19.7±10.3 vs. 22.1±10.8 months; p=0.015) and was associated with a significant reduction in the risk of syncope recurrence of 48% (p<0.001), and of traumatic syncope recurrence of 49% (p=0.018). CONCLUSIONS ILR monitoring is effective and safe in patients with unexplained, recurrent, traumatic syncope. RM reduces the time to diagnosis and significantly reduces the risk of traumatic and non-traumatic syncopal relapses.
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Affiliation(s)
- Pietro Palmisano
- Cardiology Unit, "Card. G. Panico" Hospital, Tricase (Le), Italy
| | - Federico Guerra
- Cardiology and Arrhythmology Clinic, Marche Polytechnic University, University Hospital "Umberto I - Lancisi - Salesi", Ancona, Italy
| | - Vittorio Aspromonte
- Cardiology - Coronary Care Unit, Pugliese-Ciaccio Hospital, Catanzaro, Italy
| | - Gabriele Dell'Era
- Azienda Ospedaliera Universitaria "Maggiore della Carità", Novara, Italy
| | | | - Mattia Laffi
- Cardiology Division, Villa Scassi Hospital, Genova, Italy
| | - Carlo Uran
- Cardiology Unit, San Giuseppe and Melorio Hospital, Santa Maria Capua Vetere, Caserta, Italy
| | | | - Michele Accogli
- Cardiology Unit, "Card. G. Panico" Hospital, Tricase (Le), Italy
| | - Antonio Dello Russo
- Cardiology and Arrhythmology Clinic, Marche Polytechnic University, University Hospital "Umberto I - Lancisi - Salesi", Ancona, Italy
| | - Giuseppe Patti
- Department of Translational Medicine, University of Eastern Piedmont, Maggiore della Carità Hospital, Novara, Italy
| | - Francesco Santoro
- Department of Medical and Surgery Sciences, University of Foggia, Foggia, Italy
| | | | - Gerardo Nigro
- Dipartimento di Cardiologia, Università della Campania - L.Vanvitelli, Ospedale Monaldi, Napoli, Italy
| | - Antonio Bisignani
- Institute of Cardiology, Catholic University of the Sacred Heart, Rome, Italy
| | | | - Giulia Stronati
- Cardiology and Arrhythmology Clinic, Marche Polytechnic University, University Hospital "Umberto I - Lancisi - Salesi", Ancona, Italy
| | - Vincenzo Russo
- Dipartimento di Cardiologia, Università della Campania - L.Vanvitelli, Ospedale Monaldi, Napoli, Italy
| | - Ernesto Ammendola
- Dipartimento di Cardiologia, Università della Campania - L.Vanvitelli, Ospedale Monaldi, Napoli, Italy
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Palmisano P, Guerra F, Aspromonte V, Dell’Era G, Pellegrino PL, Laffi M, Uran C, De Bonis S, Accogli M, Russo AD, Patti G, Santoro F, Torriglia A, Nigro G, Bisignani A, Coluccia G, Stronati G, Russo V, Ammendola E. Management of older patients with unexplained, recurrent, traumatic syncope and bifascicular block: implantable loop recorder versus empiric pacemaker implantation. Results of a propensity matched analysis. Heart Rhythm 2022; 19:1696-1703. [PMID: 35643299 DOI: 10.1016/j.hrthm.2022.05.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 05/09/2022] [Accepted: 05/17/2022] [Indexed: 11/25/2022]
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Russo V, Pafundi PC, Rapacciuolo A, de Divitiis M, Volpicelli M, Ruocco A, Rago A, Uran C, Nappi F, Attena E, Chianese R, Esposito F, Del Giorno G, D'Andrea A, Ducceschi V, Russo G, Ammendola E, Carbone A, Covino G, Manzo G, Montella GM, Nigro G, D'Onofrio A. Cardiac pacing procedures during coronavirus disease 2019 lockdown in Southern Italy: insights from Campania Region. J Cardiovasc Med (Hagerstown) 2021; 22:857-859. [PMID: 33399343 DOI: 10.2459/jcm.0000000000001156] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Vincenzo Russo
- Chair of Cardiology, Department of Medical Translational Sciences, University of Campania 'Luigi Vanvitelli' - Monaldi Hospital, Naples
| | - Pia Clara Pafundi
- Department of Advanced Medical and Surgical Sciences, University of Campania 'Luigi Vanvitelli'
| | - Antonio Rapacciuolo
- Division of Cardiology, Department of Advanced Biomedical Sciences, University of Naples Federico II
| | | | - Mario Volpicelli
- Division of Cardiology, San Giovanni Bosco Hospital, Health Authority Naples
| | - Antonio Ruocco
- Interventional Cardiology and Cardiological Care Unit, Cardarelli Hospital
| | - Anna Rago
- Cardiology Unit, AORN dei Colli, Naples
| | - Carlo Uran
- Cardiology Unit, San Giuseppe and Melorio Hospital, Santa Maria Capua Vetere, Caserta
| | - Felice Nappi
- Division of Cardiology, Moscati Hospital, Avellino
| | - Emilio Attena
- Division of Cardiology, San Giuliano Hospital, Giugliano in Campania, Health Authority Naples 2 North
| | - Raffaele Chianese
- Division of Cardiology, San Leonardo Hospital, Castellammare di Stabia, Health Authority Naples 3 South, Naples
| | - Francesca Esposito
- Division of Cardiology, San Giovanni di Dio e Ruggi d'Aragona, Salerno, Italy
| | | | | | | | - Giovanni Russo
- Division of Cardiology, San Leonardo Hospital, Castellammare di Stabia, Health Authority Naples 3 South, Naples
| | | | | | - Gregorio Covino
- Division of Cardiology, San Giovanni Bosco Hospital, Health Authority Naples
| | | | | | - Gerardo Nigro
- Chair of Cardiology, Department of Medical Translational Sciences, University of Campania 'Luigi Vanvitelli' - Monaldi Hospital, Naples
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Uran C. Through the heart and beyond: a review on ranolazine. Monaldi Arch Chest Dis 2021; 92. [PMID: 34498453 DOI: 10.4081/monaldi.2021.1806] [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: 02/15/2021] [Accepted: 06/25/2021] [Indexed: 11/22/2022] Open
Abstract
Ranolazine derives from piperazine and has been approved as a drug for the therapy of chronic stable angina. It acts by selectively inhibiting the late sodium inward current. Moreover, ranolazine has other metabolic features which makes it effective in other diseases as well as coronary artery ones. In this paper I make an updated review of all possible therapeutic roles of ranolazine: through cardiology and beyond.
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Affiliation(s)
- Carlo Uran
- Cardiology and Intensive Care Unit, "San Giuseppe e Melorio" Hospital, Santa Maria Capua Vetere (NA) .
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Russo V, Rapacciuolo A, Pafundi PC, de Divitiis M, Volpicelli M, Ruocco A, Rago A, Uran C, Nappi F, Attena E, Chianese R, Esposito F, Del Giorno G, D’Andrea A, Ducceschi V, Russo G, Ammendola E, Carbone A, Covino G, Manzo G, Montella GM, D’Onofrio A, Nigro G. Cardiac implantable electronic devices replacements in patients followed by remote monitoring during COVID-19 lockdown. European Heart Journal - Digital Health 2021; 2:171-174. [PMID: 37155653 PMCID: PMC7928967 DOI: 10.1093/ehjdh/ztaa018] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/02/2020] [Accepted: 12/30/2020] [Indexed: 01/25/2023]
Abstract
Aims Following coronavirus disease (COVID-19) outbreak, the Italian government adopted strict rules of lockdown and social distancing. The aim of our study was to assess the admission rate for cardiac implantable electronic devices (CIEDs) replacement procedures in Campania, the 3rd-most-populous region of Italy, during COVID-19 lockdown. Methods and results Data were sourced from 16 referral hospitals in Campania from 10 March to 4 May 2020 (lockdown period) and during the same period in 2019. We retrospectively evaluated consecutive patients hospitalized for CIEDs replacement procedures during the two observational periods. The number and type of CIEDs replacement procedures among patients followed by remote monitoring (RM), the admission rate, and the type of hospital admission between the two observational periods were compared. In total, 270 consecutive patients were hospitalized for CIEDs replacement procedures over the two observation periods. Overall CIEDs replacement procedures showed a reduction rate of 41.2% during COVID-19 lockdown. Patients were equally distributed for sex (P = 0.581), and both age [median 76 years (IQR: 68–83) vs. 79 years (IQR: 68–83); P = 0.497]. Cardiac implantable electronic devices replacement procedures in patients followed by RM significantly increased (IR: +211%; P < 0.001), mainly driven by the remarkable increase rate trend of both PM (IR: +475%; P < 0.001) and implantable cardiac defibrillator replacement procedures (IR: +67%, P = 0.01), during COVID-19 lockdown compared with 2019 timeframe. Conclusions We showed a significant increase trend rate of replacement procedures among CIEDs patients followed by RM, suggesting the hypothesis of its increased use to closely monitoring and to optimize the hospital admission time during COVID-19 lockdown.
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Affiliation(s)
- Vincenzo Russo
- Division of Cardiology, Department of Medical Translational Sciences, University of Campania “Luigi Vanvitelli”, Via L. Bianchi, 80131, Naples, Italy
| | - Antonio Rapacciuolo
- Division of Cardiology, Department of Advanced Biomedical Sciences, University of Naples Federico II, Via S. Pansini, 80131, Naples, Italy
| | - Pia Clara Pafundi
- Department of Advanced Medical and Surgical Sciences, University of Campania “Luigi Vanvitelli”, Piazza L. Miraglia, 80138, Naples, Italy
| | - Marcello de Divitiis
- Division of Cardiology, Pellegrini Hospital, Health Authority Naples 1, Via Portamedina, 80134, Naples, Italy
| | - Mario Volpicelli
- Division of Cardiology, San Giovanni Bosco Hospital, Health Authority Naples 1, Via F.M. Briganti, 80144, Naples, Italy
| | - Antonio Ruocco
- Interventional Cardiology and Cardiological Care Unit, Cardarelli Hospital, Via A. Cardarelli, 80131, Naples, Italy
| | - Anna Rago
- Cardiology Unit, AORN dei Colli, Via L. Bianchi, 80131, Naples, Italy
| | - Carlo Uran
- Cardiology Unit, San Giuseppe and Melorio Hospital, Santa Maria Capua Vetere, Via Melorio, 81055, Caserta, Italy
| | - Felice Nappi
- Division of Cardiology, Moscati Hospital, Contrada Amoretta, 83100, Avellino, Italy
| | - Emilio Attena
- Division of Cardiology, San Giuliano Hospital, Giugliano in Campania, Health Authority Naples 2 North, Via. G. Basile, 80014, Naples, Italy
| | - Raffaele Chianese
- Division of Cardiolgy, San Leonardo Hospital, Castellammare di Stabia, Health Authority Naples 3 South, Viale Europa, 80053, Naples, Italy
| | - Francesca Esposito
- Division of Cardiology, San Giovanni di Dio e Ruggi d'Aragona, Via San Leonardo, 84131 13, Salerno, Italy
| | | | - Antonello D’Andrea
- Cardiology Unit, Umberto I Hospital, Via A. de Nicola, 84014, Nocera Inferiore, Italy
| | - Valentino Ducceschi
- Division of Cardiology, Pellegrini Hospital, Health Authority Naples 1, Via Portamedina, 80134, Naples, Italy
| | - Giovanni Russo
- Division of Cardiolgy, San Leonardo Hospital, Castellammare di Stabia, Health Authority Naples 3 South, Viale Europa, 80053, Naples, Italy
| | - Ernesto Ammendola
- Cardiology Unit, AORN dei Colli, Via L. Bianchi, 80131, Naples, Italy
| | - Angelo Carbone
- Cardiology Unit, Maria SS Addolorata, Via M. Pagano, 84025, Eboli, Italy
| | - Gregorio Covino
- Division of Cardiology, San Giovanni Bosco Hospital, Health Authority Naples 1, Via F.M. Briganti, 80144, Naples, Italy
| | - Gianluca Manzo
- Cardiology Unit, Umberto I Hospital, Via A. de Nicola, 84014, Nocera Inferiore, Italy
| | | | - Antonio D’Onofrio
- Division of Cardiology, Monaldi Hospital, Via L. Bianchi, 80131, Naples, Italy
| | - Gerardo Nigro
- Division of Cardiology, Department of Medical Translational Sciences, University of Campania “Luigi Vanvitelli”, Via L. Bianchi, 80131, Naples, Italy
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Uran C, Giojelli A. A "sneaky" symptom of aortic dissection. Brief literature review, physiopathology and diagnostic tools management. Monaldi Arch Chest Dis 2021; 91. [PMID: 33792232 DOI: 10.4081/monaldi.2021.1662] [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: 10/29/2020] [Accepted: 12/23/2020] [Indexed: 11/22/2022] Open
Abstract
Aortic diseases cover a large spectrum of conditions, such as aortic aneurysm and acute aortic syndromes (i.e., dissections, intramural hematoma, penetrating atherosclerotic ulcer, traumatic aortic injuries, and pseudoaneurysms), genetic diseases (e.g., Marfan syndrome) and congenital abnormalities, such as coarctation of the aorta. These conditions may have an acute presentation; thus, if the acute aortic syndrome is the first sign of the disease, the prognosis is extremely poor. Prompt diagnosis and timely therapy are therefore mandatory. In this paper, we discuss a deceptive symptom of painless aortic dissection and its physiopathology. Furthermore, we briefly review the literature and discuss the management of diagnostic tools.
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Affiliation(s)
- Carlo Uran
- Cardiology and Intensive Care Unit, "San Giuseppe e Melorio" Hospital, Santa Maria Capua Vetere, Italy.
| | - Angela Giojelli
- Diagnostic Imaging Unit, "San Giuseppe e Melorio" Hospital, Santa Maria Capua Vetere, Italy.
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Uran C, Di Chiara G, Bosco B, D'Andrea D, Iodice P. A case of vasospastic angina. Vasospasm physiopathology: a new therapeutic role for ranolazine? Monaldi Arch Chest Dis 2020; 90. [PMID: 32885931 DOI: 10.4081/monaldi.2020.1295] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Accepted: 06/10/2020] [Indexed: 11/22/2022] Open
Abstract
We report the case of a 40-year-old man, transferred from another hospital to our ICU because of acute coronary syndrome. Coronarography did not show coronary stenosis. Twenty-four hours monitoring EKG allowed diagnosis of Prinzmetal angina and appropriate therapy was administered. Six months after discharge due recurrence of symptoms, ranolazine was added to therapy. After one year the patient is symptoms free.
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Affiliation(s)
- Carlo Uran
- Complex Operative Unit of Cardiology, Intensive Unit Coronary Care, Hospital Centre San Giuseppe e Melorio, ASL Caserta.
| | - Giacomo Di Chiara
- Complex Operative Unit of Cardiology, Intensive Unit Coronary Care, Hospital Centre San Giuseppe e Melorio, ASL Caserta.
| | - Biagio Bosco
- Complex Operative Unit of Cardiology, Intensive Unit Coronary Care, Hospital Centre San Giuseppe e Melorio, ASL Caserta.
| | - Domenico D'Andrea
- Complex Operative Unit of Cardiology, Intensive Unit Coronary Care, Hospital Centre San Giuseppe e Melorio, ASL Caserta.
| | - Pietro Iodice
- Complex Operative Unit of Cardiology, Intensive Unit Coronary Care, Hospital Centre San Giuseppe e Melorio, ASL Caserta.
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Uran C, Giojelli A, Borgogna DA, Morello G, Marullo F, Iodice P, Greco A, Accogli M, Guido A, Palmisano P. Ultrasound-guided serratus anterior plane block combined with parasternal block in subcutaneous implantable cardioverter defibrillator implantation: Results of a pilot study. Pacing Clin Electrophysiol 2020; 43:705-712. [PMID: 32420626 DOI: 10.1111/pace.13944] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 04/29/2020] [Accepted: 05/10/2020] [Indexed: 12/31/2022]
Abstract
BACKGROUND The standard approach to subcutaneous defibrillator (S-ICD) implantation often requires general anesthesia or anesthesiologist-delivered deep sedation. Ultrasound-guided serratus anterior plane block (SAPB) combined with parasternal block (PSB) has been proposed in order to provide anesthesia/analgesia and to reduce the need for sedation during S-ICD implantation. In this pilot study, we compared the double-block approach (SAPB + PSB) with the single-block approach (SAPB only) and with the standard approach involving local anesthesia and sedation. METHODS We prospectively enrolled 22 patients undergoing S-ICD implantation: in 10, the single-block approach was adopted; in 12, the double-block approach. As a control group, we retrospectively enrolled 14 consecutive patients who had undergone S-ICD implantation under standard local anesthesia and sedation in the previous 6 months. Intra- and postprocedural data, including patient-reported pain intensity, were collected and compared in the three study groups. RESULTS The double-block approach was associated with a shorter procedure duration than the single-block and standard approaches (63.3 ± 7.9 vs 70.1 ± 6.8 vs 76.9 ± 7.8 min; P < .05) and with a lower dose of local an aesthetic for infiltration (18.9 ± 1.7 vs 27.5 ± 4.6 vs 44.6 ± 4.0 cc; P < .001). Both the double- and single-block approaches were associated with lower pain intensity at the device pocket and the lateral tunneling site (P < .05). The double-block approach proved superior to the other two approaches in controlling intraoperative pain at the parasternal tunneling site (P < .05). CONCLUSIONS In our study, SAPB combined with PSB was superior to SAPB alone and to the standard approach in controlling intraoperative pain during S-ICD implantation. In addition, this approach resulted in shorter procedure durations.
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Affiliation(s)
- Carlo Uran
- Cardiology and Intensive Care Unit, "San Giuseppe e Melorio" Hospital, Santa Maria Capua Vetere, Italy
| | - Angela Giojelli
- Diagnostic Imaging Unit, "San Giuseppe e Melorio" Hospital, Santa Maria Capua Vetere, Italy
| | - Donato Antonio Borgogna
- Anesthesia and Intensive Care Unit, "San Giuseppe e Melorio" Hospital, Santa Maria Capua Vetere, Italy
| | - Gerardo Morello
- Cardiology and Intensive Care Unit, "San Giuseppe e Melorio" Hospital, Santa Maria Capua Vetere, Italy
| | - Flavio Marullo
- Cardiology and Intensive Care Unit, "San Giuseppe e Melorio" Hospital, Santa Maria Capua Vetere, Italy
| | - Pietro Iodice
- Cardiology and Intensive Care Unit, "San Giuseppe e Melorio" Hospital, Santa Maria Capua Vetere, Italy
| | - Angelo Greco
- Anesthesia and Intensive Care Unit, "Card. Giovanni Panico" Hospital, Tricase, Italy
| | - Michele Accogli
- Cardiology Unit, "Card. Giovanni Panico" Hospital, Tricase, Italy
| | - Alessandro Guido
- Cardiology Unit, "Card. Giovanni Panico" Hospital, Tricase, Italy
| | - Pietro Palmisano
- Cardiology Unit, "Card. Giovanni Panico" Hospital, Tricase, Italy
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Uran C, Giojelli A, Morello G, Nave C, Bosco B, Cicia G, D'Andrea D, Di Chiara G, Borgogna A, Iodice P. [Subcutaneous defibrillator implantation with ultrasound-guided serratus block using the two-incision technique: our experience]. G Ital Cardiol (Rome) 2019; 20:41-45. [PMID: 30638214 DOI: 10.1714/3079.30719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND The aim of this study was to report our experience with subcutaneous defibrillator (S-ICD) implantation. METHODS At our hospital, 7 procedures of S-ICD implantation were performed; 4 of these with ultrasound-guided serratus anterior plane block (SAPB) and 3 with usual local anesthesia followed by sedation. RESULTS Surgical operations were not burdened with peri- and postprocedural complications, with only one event of limited hematoma of the thoracic wall. Ultrasound-guided serratus anterior plane block was associated with better pain control during the procedure and the postoperative period. The disconnection between latissimus dorsi and serratus obtained by serratus anterior plane block contributed to make the creation of the pocket easier. The technique used is with two incisions. CONCLUSIONS In our experience, S-ICD implantation with the technique of the serratus anterior plane block is safe and effective, and significantly facilitated pain control during the procedure and postoperatively.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Antonio Borgogna
- U.O.S.D. Anestesia, P.O. S. Giuseppe e Melorio, S. Maria Capua Vetere (CE), ASL CE
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Akhavan S, Uran C, Bozok B, Gungor K, Kelestemur Y, Lesnyak V, Gaponik N, Eychmüller A, Demir HV. Flexible and fragmentable tandem photosensitive nanocrystal skins. Nanoscale 2016; 8:4495-4503. [PMID: 26498487 DOI: 10.1039/c5nr05063d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We proposed and demonstrated the first account of large-area, semi-transparent, tandem photosensitive nanocrystal skins (PNSs) constructed on flexible substrates operating on the principle of photogenerated potential buildup, which avoid the need for applying an external bias and circumvent the current-matching limitation between junctions. We successfully fabricated and operated the tandem PNSs composed of single monolayers of colloidal water-soluble CdTe and CdHgTe nanocrystals (NCs) in adjacent junctions on a Kapton polymer tape. Owing to the usage of a single NC layer in each junction, noise generation was significantly reduced while keeping the resulting PNS films considerably transparent. In each junction, photogenerated excitons are dissociated at the interface of the semi-transparent Al electrode and the NC layer, with holes migrating to the contact electrode and electrons trapped in the NCs. As a result, the tandem PNSs lead to an open-circuit photovoltage buildup equal to the sum of those of the two single junctions, exhibiting a total voltage buildup of 128.4 mV at an excitation intensity of 75.8 μW cm(-2) at 350 nm. Furthermore, we showed that these flexible PNSs could be bent over 3.5 mm radius of curvature and cut out in arbitrary shapes without damaging the operation of individual parts and without introducing any significant loss in the total sensitivity. These findings indicate that the NC skins are promising as building blocks to make low-cost, flexible, large-area UV/visible sensing platforms with highly efficient full-spectrum conversion.
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Affiliation(s)
- S Akhavan
- UNAM-Institute of Materials Science and Nanotechnology, Department of Electrical and Electronics Engineering, and Department of Physics, Bilkent University, Ankara, 06800, Turkey
| | - C Uran
- UNAM-Institute of Materials Science and Nanotechnology, Department of Electrical and Electronics Engineering, and Department of Physics, Bilkent University, Ankara, 06800, Turkey
| | - B Bozok
- UNAM-Institute of Materials Science and Nanotechnology, Department of Electrical and Electronics Engineering, and Department of Physics, Bilkent University, Ankara, 06800, Turkey
| | - K Gungor
- UNAM-Institute of Materials Science and Nanotechnology, Department of Electrical and Electronics Engineering, and Department of Physics, Bilkent University, Ankara, 06800, Turkey
| | - Y Kelestemur
- UNAM-Institute of Materials Science and Nanotechnology, Department of Electrical and Electronics Engineering, and Department of Physics, Bilkent University, Ankara, 06800, Turkey
| | - V Lesnyak
- Physical Chemistry, Technische Universität Dresden, Dresden, 01062, Germany and Department of Nanochemistry, Istituto Italiano di Tecnologia, Genova, 16163, Italy
| | - N Gaponik
- Physical Chemistry, Technische Universität Dresden, Dresden, 01062, Germany
| | - A Eychmüller
- Physical Chemistry, Technische Universität Dresden, Dresden, 01062, Germany
| | - H V Demir
- UNAM-Institute of Materials Science and Nanotechnology, Department of Electrical and Electronics Engineering, and Department of Physics, Bilkent University, Ankara, 06800, Turkey and School of Electrical and Electronic Engineering and School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 639798, Singapore.
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