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Cossu L, Cappon G, Streicher O, Herzig D, Bally L, Facchinetti A. Design and Usability Assessment of a User-Centered, Modular Platform for Real-World Data Acquisition in Clinical Trials involving Post-bariatric Surgery Patients. J Diabetes Sci Technol 2023:19322968231220061. [PMID: 38142364 DOI: 10.1177/19322968231220061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2023]
Abstract
BACKGROUND Clinical trials often face challenges in efficient data collection and participant monitoring. To address these issues, we developed the IMPACT platform, comprising a real-time mobile application for data collection and a web-based dashboard for remote monitoring and management. METHODS This article presents the design, development, and usability assessment of the IMPACT platform customized for patients with post-bariatric surgery hypoglycemia (PBH). We focus on adapting key IMPACT components, including continuous glucose monitoring (CGM), symptom tracking, and meal logging, as crucial elements for user-friendly and efficient PBH monitoring. RESULTS The adapted IMPACT platform demonstrated effectiveness in data collection and remote participant monitoring. The mobile application allowed patients to easily track their data, while the clinician dashboard provided a comprehensive overview of enrolled patients, featuring filtering options and alert mechanisms for identifying data collection issues. The platform incorporated various visual representations, including time plots and category-based visualizations, which greatly facilitated data interpretation and analysis. The System Usability Scale questionnaire results indicated a high level of usability for the web dashboard, with an average score of 86.3 out of 100. The active involvement of clinicians throughout the development process ensured that the platform allowed for the collection and visualization of clinically meaningful data. CONCLUSIONS By leveraging IMPACT's existing features and infrastructure, the adapted version streamlined data collection, analysis, and trial customization for PBH research. The platform's high usability underscores its alignment with the requirements for conducting research using continuous real-world data in PBH patients and other populations of interest.
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Affiliation(s)
- Luca Cossu
- Department of Information Engineering, University of Padova, Padova, Italy
| | - Giacomo Cappon
- Department of Information Engineering, University of Padova, Padova, Italy
| | - Olivia Streicher
- Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland
| | - David Herzig
- Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland
| | - Lia Bally
- Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland
| | - Andrea Facchinetti
- Department of Information Engineering, University of Padova, Padova, Italy
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Krisai P, Roten L, Zeljkovic I, Pavlovic N, Ammann P, Reichlin T, Auf der Maur E, Streicher O, Knecht S, Kühne M, Osswald S, Novak J, Sticherling C. Prospective Evaluation of a Standardized Screening for Atrial Fibrillation after Ablation of Cavotricuspid Isthmus Dependent Atrial Flutter. J Clin Med 2021; 10:jcm10194453. [PMID: 34640470 PMCID: PMC8509798 DOI: 10.3390/jcm10194453] [Citation(s) in RCA: 1] [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] [Received: 09/01/2021] [Revised: 09/20/2021] [Accepted: 09/21/2021] [Indexed: 11/30/2022] Open
Abstract
Aims: We aimed to prospectively investigate the effectiveness of a standardized follow-up for AF-detection after common atrial flutter (cAFL) ablation. Methods: A total of 309 patients after cAFL ablation without known AF, from 5 centers, and at least one completed, standardized follow-up at 3, 6 and 12 months, including a 24 h Holter-electrocardiogram (ECG), were included. The primary outcome was incident atrial fibrillation (AF), or atrial tachycardia (AT). Predictors were investigated by Cox proportional-hazards models. Results: The mean age was 67.9 years; 15.2% were female and the mean CHA2DS2-VASc (Congestive heart failure, Hypertension, Age, Diabetes, Stroke, Vascular disease, Sex category) score was 2.4 points. The great majority of patients (90.3%) were anticoagulated. Over a mean follow-up of 12.2 months with a standardized approach, AF/AT was detected in 73 patients, corresponding to 11.7% at 3 months, 18.4% at 6 months and 28.2% at 12 months of follow-up. AF was found in 64 patients, AT in 9 and both in 2 patients. Occurrence of AF was recorded in 40 (60.6%) patients by Holter-ECG and in the remaining 26 (39.4%) by clinical follow-up only. There was no difference in male versus female (p = 0.08), or in younger versus older patients (p = 0.96) for AF/AT detection. Only coronary artery disease (hazard ratio [95% confidence intervals] 1.03 [1.01–1.05], p = 0.01) was associated with the primary outcome. Conclusions: AF or AT was detected in a large proportion of cAFL patients after cavotricuspid-isthmus (CTI) ablation, using a standardized follow-up over 1 year. This standardized screening can be easily implemented with high patient acceptance. The high proportion of post-ablation AF needs to be taken into consideration when deciding on long-term oral anticoagulation.
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Affiliation(s)
- Philipp Krisai
- Cardiovascular Research Institute Basel, Department of Cardiology, University Hospital Basel, 4031 Basel, Switzerland; (P.K.); (O.S.); (S.K.); (M.K.); (S.O.)
- Electrophysiology and Ablation Unit, Centre Hospitalier Universitaire de Bordeaux, 33600 Bordeaux-Pessac, France
| | - Laurent Roten
- Department of Cardiology, Inselspital, Bern University Hospital, 3010 Bern, Switzerland; (L.R.); (T.R.); (E.A.d.M.)
| | - Ivan Zeljkovic
- Department of Cardiology, University Hospital Sestre Milosrdnice, 10000 Zagreb, Croatia; (I.Z.); (N.P.)
| | - Nikola Pavlovic
- Department of Cardiology, University Hospital Sestre Milosrdnice, 10000 Zagreb, Croatia; (I.Z.); (N.P.)
| | - Peter Ammann
- Department of Cardiology, Cantonal Hospital St. Gallen, 9007 St. Gallen, Switzerland;
| | - Tobias Reichlin
- Department of Cardiology, Inselspital, Bern University Hospital, 3010 Bern, Switzerland; (L.R.); (T.R.); (E.A.d.M.)
| | - Eric Auf der Maur
- Department of Cardiology, Inselspital, Bern University Hospital, 3010 Bern, Switzerland; (L.R.); (T.R.); (E.A.d.M.)
| | - Olivia Streicher
- Cardiovascular Research Institute Basel, Department of Cardiology, University Hospital Basel, 4031 Basel, Switzerland; (P.K.); (O.S.); (S.K.); (M.K.); (S.O.)
- Department of Cardiology, University Hospital Basel, 4031 Basel, Switzerland
| | - Sven Knecht
- Cardiovascular Research Institute Basel, Department of Cardiology, University Hospital Basel, 4031 Basel, Switzerland; (P.K.); (O.S.); (S.K.); (M.K.); (S.O.)
- Department of Cardiology, University Hospital Basel, 4031 Basel, Switzerland
| | - Michael Kühne
- Cardiovascular Research Institute Basel, Department of Cardiology, University Hospital Basel, 4031 Basel, Switzerland; (P.K.); (O.S.); (S.K.); (M.K.); (S.O.)
- Department of Cardiology, University Hospital Basel, 4031 Basel, Switzerland
| | - Stefan Osswald
- Cardiovascular Research Institute Basel, Department of Cardiology, University Hospital Basel, 4031 Basel, Switzerland; (P.K.); (O.S.); (S.K.); (M.K.); (S.O.)
- Department of Cardiology, University Hospital Basel, 4031 Basel, Switzerland
| | - Jan Novak
- Herz-und Nierenzentrum Aare, 4500 Solothurn, Switzerland;
| | - Christian Sticherling
- Cardiovascular Research Institute Basel, Department of Cardiology, University Hospital Basel, 4031 Basel, Switzerland; (P.K.); (O.S.); (S.K.); (M.K.); (S.O.)
- Department of Cardiology, University Hospital Basel, 4031 Basel, Switzerland
- Correspondence:
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3
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Krisai P, Streicher O, Meyre P, Haemmerle P, Steiner F, Reddiess P, Zeljkovic I, Pavlovic N, Ammann P, Roten L, Reichlin T, Madaffari A, Kuehne M, Novak J, Sticherling C. P993Incidence of atrial fibrillation early after cavotricuspid isthmus ablation. Europace 2020. [DOI: 10.1093/europace/euaa162.184] [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] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Atrial fibrillation (AF) is a common finding in patients undergoing cavotricuspid isthmus ablation for isthmus dependent right atrial flutter (RAF). Little is known about the time of its occurrence.
Purpose
We aimed to investigate the incidence of AF early after RAF ablation in a well-defined, prospective cohort.
Methods
A total of 255 participants with RAF ablation from 5 centers and at least one completed follow-up were included. Structured clinical follow-up was performed at 3, 6 and 12 months including a 24 hour Holter-ECG. The endpoint was incidence of AF detected clinically or by Holter-ECG. Risk factors associated with the occurrence of AF were assessed using separate, univariate Cox proportional-hazards models.
Results
Mean age was 67 years, 80% were male and previous episodes of AF were known in 40%. Over a mean follow-up of 7.4 (±4.4) months AF was detected in 35 (13.7%) participants after RAF ablation (Figure A). After 3, 6 and 12 months AF was detected in 18 (7.1%), 30 (11.7%) and 34 (13.3%) patients. No difference in the incidence of AF after RAF ablation was found comparing patients with and without a history of AF (log-rank p value = 0.44) (Figure B). Comparing patients with and without AF during follow-up, there was no difference in age (68 vs 66 years, p = 0.36), sex (69 vs 81% male, p = 0.08), prior heart failure (29 vs 19%, p = 0.20), hypertension (43 vs 38%, p = 0.56) or left atrial volume (46.6 vs 39.6 ml, p = 0.10), but patients with previous AF had a lower left ventricular ejection fraction (LVEF) (45.7 vs 52.3%, p = 0.02). In separate, univariate Cox proportional-hazards models only increasing LVEF (Hazard ratio 0.97, 95% confidence interval (0.95; 0.99, p = 0.02)) was associated with a lower risk of incident AF after RAF ablation, but no other risk factor.
Conclusions
AF occurred in 13.7% of patients early after cavotricuspid isthmus ablation for RAF. There was no difference in the occurrence of AF between patients with and without previously known episodes of AF. Only impaired LVEF was associated with AF occurrence.
Abstract Figure
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Affiliation(s)
- P Krisai
- University Hospital Basel, Cardiology, Basel, Switzerland
| | - O Streicher
- University Hospital Basel, Cardiology, Basel, Switzerland
| | - P Meyre
- University Hospital Basel, Cardiology, Basel, Switzerland
| | - P Haemmerle
- University Hospital Basel, Cardiology, Basel, Switzerland
| | - F Steiner
- University Hospital Basel, Cardiology, Basel, Switzerland
| | - P Reddiess
- University Hospital Basel, Cardiology, Basel, Switzerland
| | - I Zeljkovic
- University of Zagreb School of Medicine, KBC Sestre Milosrdnice, Zagreb, Croatia
| | - N Pavlovic
- University of Zagreb School of Medicine, KBC Sestre Milosrdnice, Zagreb, Croatia
| | - P Ammann
- Cantonal Hospital St. Gallen, Cardiology department, St Gallen, Switzerland
| | - L Roten
- Bern University Hospital, Inselspital, Department of Cardiology, Bern, Switzerland
| | - T Reichlin
- Bern University Hospital, Inselspital, Department of Cardiology, Bern, Switzerland
| | - A Madaffari
- University Hospital Basel, Cardiology, Basel, Switzerland
| | - M Kuehne
- University Hospital Basel, Cardiology, Basel, Switzerland
| | - J Novak
- Cantonal Hospital Solothurn, Herz- und Nierenzentrum Aare AG, Solothurn, Switzerland
| | - C Sticherling
- University Hospital Basel, Cardiology, Basel, Switzerland
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Andrés E, Askebjer P, Bai X, Barouch G, Barwick SW, Bay RC, Becker KH, Bergström L, Bertrand D, Bierenbaum D, Biron A, Booth J, Botner O, Bouchta A, Boyce MM, Carius S, Chen A, Chirkin D, Conrad J, Cooley J, Costa CG, Cowen DF, Dailing J, Dalberg E, DeYoung T, Desiati P, Dewulf JP, Doksus P, Edsjö J, Ekström P, Erlandsson B, Feser T, Gaug M, Goldschmidt A, Goobar A, Gray L, Haase H, Hallgren A, Halzen F, Hanson K, Hardtke R, He YD, Hellwig M, Heukenkamp H, Hill GC, Hulth PO, Hundertmark S, Jacobsen J, Kandhadai V, Karle A, Kim J, Koci B, Köpke L, Kowalski M, Leich H, Leuthold M, Lindahl P, Liubarsky I, Loaiza P, Lowder DM, Ludvig J, Madsen J, Marciniewski P, Matis HS, Mihalyi A, Mikolajski T, Miller TC, Minaeva Y, Miocinović P, Mock PC, Morse R, Neunhöffer T, Newcomer FM, Niessen P, Nygren DR, Ogelman H, Pérez de los Heros C, Porrata R, Price PB, Rawlins K, Reed C, Rhode W, Richards A, Richter S, Martino JR, Romenesko P, Ross D, Rubinstein H, Sander HG, Scheider T, Schmidt T, Schneider D, Schneider E, Schwarz R, Silvestri A, Solarz M, Spiczak GM, Spiering C, Starinsky N, Steele D, Steffen P, Stokstad RG, Streicher O, Sun Q, Taboada I, Thollander L, Thon T, Tilav S, Usechak N, Vander Donckt M, Walck C, Weinheimer C, Wiebusch CH, Wischnewski R, Wissing H, Woschnagg K, Wu W, Yodh G, Young S. Observation of high-energy neutrinos using Cerenkov detectors embedded deep in Antarctic ice. Nature 2001; 410:441-3. [PMID: 11260705 DOI: 10.1038/35068509] [Citation(s) in RCA: 138] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Neutrinos are elementary particles that carry no electric charge and have little mass. As they interact only weakly with other particles, they can penetrate enormous amounts of matter, and therefore have the potential to directly convey astrophysical information from the edge of the Universe and from deep inside the most cataclysmic high-energy regions. The neutrino's great penetrating power, however, also makes this particle difficult to detect. Underground detectors have observed low-energy neutrinos from the Sun and a nearby supernova, as well as neutrinos generated in the Earth's atmosphere. But the very low fluxes of high-energy neutrinos from cosmic sources can be observed only by much larger, expandable detectors in, for example, deep water or ice. Here we report the detection of upwardly propagating atmospheric neutrinos by the ice-based Antarctic muon and neutrino detector array (AMANDA). These results establish a technology with which to build a kilometre-scale neutrino observatory necessary for astrophysical observations.
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Affiliation(s)
- E Andrés
- Department of Physics, University of Wisconsin, Wisconsin, Madison 53706, USA
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5
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Balkanov V, Belolaptikov I, Bezrukov L, Budnev N, Chensky A, Danilchenko I, Djilkibaev ZA, Domogatsky G, Doroshenko A, Fialkovsky S, Gaponenko O, Gress O, Kiss D, Klabukov A, Klimov A, Klimushin S, Koshechkin A, Kulepov V, Kuzmichev L, Kuznetzov V, Ljaudenskaite J, Lubsandorzhiev B, Milenin M, Mirgazov R, Moseiko N, Netikov V, Osipova E, Panfilov A, Parfenov Y, Pankov L, Pavlov A, Pliskovsky E, Pokhil P, Popova E, Prosin V, Rzhechitsky A, Rozanov M, Rubzov V, Semenei Y, Sokalski I, Spiering C, Streicher O, Tarashansky B, Thon T, Toht G, Vasiljev R, Wischnewski R, Yashin I. The Lake Baikal neutrino experiment. ACTA ACUST UNITED AC 2000. [DOI: 10.1016/s0920-5632(00)00704-0] [Citation(s) in RCA: 7] [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] [Indexed: 10/17/2022]
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Balkanov V, Belolaptikov I, Bezrukov L, Chensky A, Budnev N, Danilchenko I, Dzhilkibaev ZA, Domogatsky G, Doroshenko A, Fialkovsky S, Gaponenko O, Garus A, Gress T, Karle A, Klabukov A, Klimov A, Klimushin S, Koshechkin A, Kulepov V, Kuzmichev L, Lubsandorzhiev B, Lovzov S, Mikolajski T, Milenin M, Mirgazov R, Moroz A, Moseiko N, Nikiforov S, Osipova E, Pandel D, Panfilov A, Parfenov Y, Pavlov A, Petukhov D, Pokhil P, Pokolev P, Popova E, Rozanov M, Rubzov V, Sokalski I, Spiering C, Streicher O, Tarashansky B, Thon T, Wischnewski R, Yashin I. In situ measurements of optical parameters in Lake Baikal with the help of a Neutrino telescope. Appl Opt 1999; 38:6818-6825. [PMID: 18324221 DOI: 10.1364/ao.38.006818] [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] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We present results of an experiment performed in Lake Baikal at a depth of approximately 1 km. The photomultipliers of an underwater neutrino telescope under construction at this site were illuminated by a distant laser. The experiment not only provided a useful cross-check of the time calibration of the detector but also allowed us to determine inherent optical parameters of the water in a way that was complementary to standard methods. In 1997 we measured an absorption length of 22 m and an asymptotic attenuation length of 18 m. The effective scattering length was measured as 480 m. By use of (cos theta) = 0.95 (0.90) for the average scattering angle, this length corresponds to a geometric scattering length of 24 (48) m.
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Affiliation(s)
- V Balkanov
- Institute for Nuclear Research, Russian Academy of Sciences, 60-th October Anniversary Prospect 7a, 117312 Moscow, Russia
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7
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Askebjer P, Barwick SW, Bergström L, Bouchta A, Carius S, Dalberg E, Engel K, Erlandsson B, Goobar A, Gray L, Hallgren A, Halzen F, Heukenkamp H, Hulth PO, Hundertmark S, Jacobsen J, Karle A, Kandhadai V, Liubarsky I, Lowder D, Miller T, Mock P, Morse RM, Porrata R, Price PB, Richards A, Rubinstein H, Schneider E, Spiering C, Streicher O, Sun Q, Thon T, Tilav S, Wischnewski R, Walck C, Yodh GB. Optical properties of deep ice at the South Pole: absorption. Appl Opt 1997; 36:4168-4180. [PMID: 18253445 DOI: 10.1364/ao.36.004168] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
We discuss recent measurements of the wavelength-dependent absorption coefficients in deep South Pole ice. The method uses transit-time distributions of pulses from a variable-frequency laser sent between emitters and receivers embedded in the ice. At depths of 800-1000 m scattering is dominated by residual air bubbles, whereas absorption occurs both in ice itself and in insoluble impurities. The absorption coefficient increases approximately exponentially with wavelength in the measured interval 410-610 nm. At the shortest wavelength our value is approximately a factor 20 below previous values obtained for laboratory ice and lake ice; with increasing wavelength the discrepancy with previous measurements decreases. At ~415 to ~500 nm the experimental uncertainties are small enough for us to resolve an extrinsic contribution to absorption in ice: submicrometer dust particles contribute by an amount that increases with depth and corresponds well with the expected increase seen near the Last Glacial Maximum in Vostok and Dome C ice cores. The laser pulse method allows remote mapping of gross structure in dust concentration as a function of depth in glacial ice.
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8
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Belolaptikov I, Bezrukov L, Borisovets B, Budnev N, Chensky A, Djilkibaev Z, Dobrynin V, Domogatsky G, Donskych L, Doroshenko A, Fialkovsky S, Golikov A, Gress O, Heller R, Heukenkamp H, Kabikov V, Klabukov A, Klimov A, Klimushin S, Konopleva T, Koshechkin A, Krabi J, Kulepov V, Kuzmichov L, Lanin O, Lubsandorzhiev B, Milenin M, Mikolajski T, Mirgazov R, Nikiforov S, Ogievietzky N, Osipova E, Padusenko A, Panfilov A, Parfenov Y, Pavlov A, Petuchov D, Pocheikin K, Pochil P, Pokalev O, Rosanov M, Rzhetshizki A, Rubzov V, Sinegovski S, Sokalski I, Spiering C, Streicher O, Tarashansky V, Thon T, Trofimenko I, Wischnewski R, Zurbanov V. The lake Baikal underwater telescope NT-36: First months of operation. ACTA ACUST UNITED AC 1994. [DOI: 10.1016/0920-5632(94)90266-6] [Citation(s) in RCA: 8] [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] [Indexed: 10/27/2022]
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