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  1. AU="Beckendorf, C"
  2. AU="Birge, N W"
  3. AU="Hoang, Oi Pui"
  4. AU="Saradha Baskaran"
  5. AU="Culotta, Lorenza"
  6. AU=Cleaver Ondine
  7. AU="Jordan A. Kreidberg"
  8. AU="Al-Marshoud, Majida"
  9. AU="David S Hui"
  10. AU="Manjappa, Shivaprasad"
  11. AU="Balkan, S"
  12. AU="Chen, Emma"
  13. AU="Delean, Ada"
  14. AU="Gurao, Ankita"
  15. AU="Lang, Zhen"
  16. AU="Mahnaz Mohammadpour"
  17. AU="Britta Grillitsch"
  18. AU=Hoeffner Ellen G
  19. AU="Al Harbi, Shmeylan"
  20. AU=Polevoda Bogdan
  21. AU="Raffaele Galiero"
  22. AU=Hruskova Z
  23. AU="Ayers, J"
  24. AU="Cohen, A D"
  25. AU="Brunetti, Gian Luca"
  26. AU=Andrade Daniel
  27. AU=Hay William W Jr

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  1. Artikel ; Online: Circadian and circaseptan rhythms in implant-based thoracic impedance.

    Kirchner, J / Paule, S / Beckendorf, C / Achenbach, S / Arnold, M

    Physiological measurement

    2015  Band 36, Heft 7, Seite(n) 1615–1628

    Abstract: Thoracic impedance (TI) denotes the electrical resistance that is measured between the right ventricular lead and the can of an implantable cardioverter-defibrillator. It is used in medical diagnostics for fluid load monitoring in heart failure patients. ...

    Abstract Thoracic impedance (TI) denotes the electrical resistance that is measured between the right ventricular lead and the can of an implantable cardioverter-defibrillator. It is used in medical diagnostics for fluid load monitoring in heart failure patients. We analysed TI for diurnal and weekly components that go along with the recurrent patterns of daily life.TI was measured in 53 patients over 280 d each with a resolution of 1 h. Information about the patients' professional occupation and typical sleeping rhythm was sought. Periodic signal components were identified in the amplitude spectrum, and their main characteristics were derived by cosinor analysis. The typical daily and weekly pattern were reconstructed by Fourier filtering.The Fourier spectrum indicates a strong circadian and a weaker circaseptan component in TI. The latter is significantly elevated in patients who regularly go to work, on error level [Formula: see text]. Cosinor analysis states a significant circadian rhythm in all patients ([Formula: see text]), with MESOR 61.8 [Formula: see text], amplitude 1.9 [Formula: see text], and acrophase 17.5 h. A significant weekly rhythm is found in 25 patients ([Formula: see text]), with amplitude 0.31 [Formula: see text] and acrophase typically on Wednesday. Both rhythms typically obtain their maximum during the 'active' phase of the period in daily life, i.e. in the afternoon and on working days, respectively, while the minimum is reached in the 'recreative' phase.Circadian and circaseptan variation are hence prevalent components of TI, which can induce impedance changes of several Ohms and thus be an error source for daily TI measurements.
    Mesh-Begriff(e) Adult ; Aged ; Aged, 80 and over ; Circadian Rhythm/physiology ; Defibrillators, Implantable ; Echocardiography ; Electric Impedance ; Employment ; Female ; Heart Failure/physiopathology ; Heart Failure/therapy ; Humans ; Male ; Middle Aged ; Monitoring, Ambulatory/instrumentation ; Monitoring, Ambulatory/methods ; Occupations ; Sleep/physiology ; Thorax/physiopathology
    Sprache Englisch
    Erscheinungsdatum 2015-07
    Erscheinungsland England
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1149545-5
    ISSN 1361-6579 ; 0967-3334
    ISSN (online) 1361-6579
    ISSN 0967-3334
    DOI 10.1088/0967-3334/36/7/1615
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Artikel ; Online: Heart failure monitoring with implantable defibrillators.

    Kirchner, J / Arnold, M / Beckendorf, C / Paule, S / Czygan, G

    Biomedizinische Technik. Biomedical engineering

    2012  Band 57 Suppl 1

    Sprache Englisch
    Erscheinungsdatum 2012-09-06
    Erscheinungsland Germany
    Dokumenttyp Journal Article
    ZDB-ID 120817-2
    ISSN 1862-278X ; 0013-5585
    ISSN (online) 1862-278X
    ISSN 0013-5585
    DOI 10.1515/bmt-2012-4256
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  3. Artikel ; Online: COVID-19 in Female and Male Athletes: Symptoms, Clinical Findings, Outcome, and Prolonged Exercise Intolerance-A Prospective, Observational, Multicenter Cohort Study (CoSmo-S).

    Widmann, Manuel / Gaidai, Roman / Schubert, Isabel / Grummt, Maximilian / Bensen, Lieselotte / Kerling, Arno / Quermann, Anne / Zacher, Jonas / Vollrath, Shirin / Bizjak, Daniel Alexander / Beckendorf, Claudia / Egger, Florian / Hasler, Erik / Mellwig, Klaus-Peter / Fütterer, Cornelia / Wimbauer, Fritz / Vogel, Azin / Schoenfeld, Julia / Wüstenfeld, Jan C /
    Kastner, Tom / Barsch, Friedrich / Friedmann-Bette, Birgit / Bloch, Wilhelm / Meyer, Tim / Mayer, Frank / Wolfarth, Bernd / Roecker, Kai / Reinsberger, Claus / Haller, Bernhard / Niess, Andreas M

    Sports medicine (Auckland, N.Z.)

    2024  Band 54, Heft 4, Seite(n) 1033–1049

    Abstract: Background: An infection with SARS-CoV-2 can lead to a variety of symptoms and complications, which can impair athletic activity.: Objective: We aimed to assess the clinical symptom patterns, diagnostic findings, and the extent of impairment in sport ...

    Abstract Background: An infection with SARS-CoV-2 can lead to a variety of symptoms and complications, which can impair athletic activity.
    Objective: We aimed to assess the clinical symptom patterns, diagnostic findings, and the extent of impairment in sport practice in a large cohort of athletes infected with SARS-CoV-2, both initially after infection and at follow-up. Additionally, we investigated whether baseline factors that may contribute to reduced exercise tolerance at follow-up can be identified.
    Methods: In this prospective, observational, multicenter study, we recruited German COVID elite-athletes (cEAs, n = 444) and COVID non-elite athletes (cNEAs, n = 481) who tested positive for SARS-CoV-2 by PCR (polymerase chain reaction test). Athletes from the federal squad with no evidence of SARS-CoV-2 infection served as healthy controls (EAcon, n = 501). Questionnaires were used to assess load and duration of infectious symptoms, other complaints, exercise tolerance, and duration of training interruption at baseline and at follow-up 6 months after baseline. Diagnostic tests conducted at baseline included resting and exercise electrocardiogram (ECG), echocardiography, spirometry, and blood analyses.
    Results: Most acute and infection-related symptoms and other complaints were more prevalent in cNEA than in cEAs. Compared to cEAs, EAcon had a low symptom load. In cNEAs, female athletes had a higher prevalence of complaints such as palpitations, dizziness, chest pain, myalgia, sleeping disturbances, mood swings, and concentration problems compared to male athletes (p < 0.05). Until follow-up, leading symptoms were drop in performance, concentration problems, and dyspnea on exertion. Female athletes had significantly higher prevalence for symptoms until follow-up compared to male. Pathological findings in ECG, echocardiography, and spirometry, attributed to SARS-CoV-2 infection, were rare in infected athletes. Most athletes reported a training interruption between 2 and 4 weeks (cNEAs: 52.9%, cEAs: 52.4%), while more cNEAs (27.1%) compared to cEAs (5.1%) had a training interruption lasting more than 4 weeks (p < 0.001). At follow-up, 13.8% of cNEAs and 9.9% of cEAs (p = 0.24) reported their current exercise tolerance to be under 70% compared to pre-infection state. A persistent loss of exercise tolerance at follow-up was associated with persistent complaints at baseline, female sex, a longer break in training, and age > 38 years. Periodical dichotomization of the data set showed a higher prevalence of infectious symptoms such as cough, sore throat, and coryza in the second phase of the pandemic, while a number of neuropsychiatric symptoms as well as dyspnea on exertion were less frequent in this period.
    Conclusions: Compared to recreational athletes, elite athletes seem to be at lower risk of being or remaining symptomatic after SARS-CoV-2 infection. It remains to be determined whether persistent complaints after SARS-CoV-2 infection without evidence of accompanying organ damage may have a negative impact on further health and career in athletes. Identifying risk factors for an extended recovery period such as female sex and ongoing neuropsychological symptoms could help to identify athletes, who may require a more cautious approach to rebuilding their training regimen.
    Trial registration number: DRKS00023717; 06.15.2021-retrospectively registered.
    Mesh-Begriff(e) Humans ; COVID-19/epidemiology ; COVID-19/diagnosis ; Female ; Prospective Studies ; Male ; Adult ; Exercise Tolerance ; Athletes ; SARS-CoV-2 ; Germany/epidemiology ; Young Adult ; Myalgia/epidemiology
    Sprache Englisch
    Erscheinungsdatum 2024-01-11
    Erscheinungsland New Zealand
    Dokumenttyp Journal Article ; Observational Study ; Multicenter Study
    ZDB-ID 605911-9
    ISSN 1179-2035 ; 0112-1642
    ISSN (online) 1179-2035
    ISSN 0112-1642
    DOI 10.1007/s40279-023-01976-0
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.A 2010: Hefte anzeigen Standort:
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  4. Artikel ; Konferenzbeitrag: Continuous rhythm monitoring after Transcatheter Aortic Valve Implantation using an implantable loop recorder

    Ensminger, S / Loders, S / Beckendorf, C / Feyrer, R / Ludwig, J / Achenbach, S / Weyand, M / Arnold, M

    The Thoracic and Cardiovascular Surgeon

    2013  

    Abstract: Aims: Periprocedural conduction disorders after TAVI are a well known complication of this procedure. The aim of this study was to characterize the postoperative time frame and incidence of rhythm disorders in order to establish a realistic risk ... ...

    Veranstaltung/Kongress 42nd Annual Meeting of the German Society for Cardiovascular and Thoracic Surgery, Freiburg, 2013
    Abstract Aims: Periprocedural conduction disorders after TAVI are a well known complication of this procedure. The aim of this study was to characterize the postoperative time frame and incidence of rhythm disorders in order to establish a realistic risk stratification.
    Methods: 21 consecutive patients (mean age 81 ± 3 years, mean log. EuroScore 35 ± 14%), who underwent TAVI (Edwards Sapien), received an implantable loop recorder (REVEAL XT) during the TAVI procedure. ECGs were obtained at admission, postoperatively, at discharge, after 3 months, 6 months, 12 months, 18 months and after 2 years. Loop recorders were read at all postoperative follow up visits.
    Results: New relevant rhythm disorders were seen in 33% of all the patients (n = 7). In 19% of the treated patients a pacemaker implantation was required during the entire follow up period (AV-block III (2), bradyarrythmia (2)). There was no perioperative requirement for a permanent pacemaker implantation. 2 patients received their pacemaker 7 and 15 days after the TAVI procedure. In 2 other patients an indication for pacemaker implantation was found more than one year after TAVI procedure. One patient with intraoperative complete AV-block was followed and did not show any high grade conduction disorder during the 2 year follow up period. The 2-year-mortality was 28.5%. None of the patients were lost due to conduction disorders.
    Conclusion: : Implantation of a loop recorder allowed effective analysis of postoperative rhythm disorders after TAVI. Most of the relevant conduction disorders requiring intervention occurred during the first two weeks after TAVI-implantation. Furthermore, in our patient group it seems that intraoperative transient conduction disorders do not predict future indication for pacemaker implantation.
    Sprache Englisch
    Erscheinungsdatum 2013-01-23
    Erscheinungsort Stuttgart ; New York
    Dokumenttyp Artikel ; Konferenzbeitrag
    ZDB-ID 800050-5
    ISSN 1439-1902 ; 0171-6425 ; 0946-4778 ; 0172-6137
    ISSN (online) 1439-1902
    ISSN 0171-6425 ; 0946-4778 ; 0172-6137
    DOI 10.1055/s-0032-1332418
    Datenquelle Thieme Verlag

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  5. Artikel ; Online: COVID-19 in German Competitive Sports: Protocol for a Prospective Multicenter Cohort Study (CoSmo-S).

    Niess, Andreas Michael / Widmann, Manuel / Gaidai, Roman / Gölz, Christian / Schubert, Isabel / Castillo, Katty / Sachs, Jan Philipp / Bizjak, Daniel / Vollrath, Shirin / Wimbauer, Fritz / Vogel, Azin / Keller, Karsten / Burgstahler, Christof / Quermann, Anne / Kerling, Arno / Schneider, Gerald / Zacher, Jonas / Diebold, Katharina / Grummt, Maximilian /
    Beckendorf, Claudia / Buitenhuis, Johannes / Egger, Florian / Venhorst, Andreas / Morath, Oliver / Barsch, Friedrich / Mellwig, Klaus-Peter / Oesterschlink, Julian / Wüstenfeld, Jan / Predel, Hans-Georg / Deibert, Peter / Friedmann-Bette, Birgit / Mayer, Frank / Hirschmüller, Anja / Halle, Martin / Steinacker, Jürgen Michael / Wolfarth, Bernd / Meyer, Tim / Böttinger, Erwin / Flechtner-Mors, Marion / Bloch, Wilhelm / Haller, Bernhard / Roecker, Kai / Reinsberger, Claus

    International journal of public health

    2022  Band 67, Seite(n) 1604414

    Abstract: Objective: ...

    Abstract Objective:
    Mesh-Begriff(e) Biological Specimen Banks ; COVID-19 ; Cohort Studies ; Humans ; Multicenter Studies as Topic ; Observational Studies as Topic ; Pandemics ; Prospective Studies ; SARS-CoV-2 ; Seroepidemiologic Studies
    Sprache Englisch
    Erscheinungsdatum 2022-02-07
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article
    ZDB-ID 2274130-6
    ISSN 1661-8564 ; 1661-8556
    ISSN (online) 1661-8564
    ISSN 1661-8556
    DOI 10.3389/ijph.2022.1604414
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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