Helle Collatz Christensen

Helle Collatz Christensen

Clinical Associate Professor

Member of:

  • Emergency Medicine


Publication year:
All
1 - 81 out of 81Page size: 100
  1. 2024
  2. Published

    Characteristics and critical care interventions in drowning patients treated by the Danish Air Ambulance from 2016 to 2021: a nationwide registry-based study with 30-day follow-up

    Breindahl, N., Wolthers, S. A., Møller, T. P., Blomberg, S. N. F., Steinmetz, Jacob & Christensen, Helle Collatz, 2024, In: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine. 32, 11 p., 17.

    Research output: Contribution to journal › Journal article › Research › peer-review

  3. Published

    Prodromal complaints and 30-day survival after emergency medical services-witnessed out-of-hospital cardiac arrest

    Larsen, M. B., Blom-Hanssen, E., Gnesin, Filip Jurijevitj, Kragholm, K. H., Lass Klitgaard, T., Christensen, Helle Collatz, Lippert, F., Folke, Fredrik, Torp-Pedersen, Christian & Ringgren, K. B., 2024, In: Resuscitation. 197, 7 p., 110155.

    Research output: Contribution to journal › Journal article › Research › peer-review

  4. Published

    Association Between Defibrillation Using LIFEPAK 15 or ZOLL X Series and Survival Outcomes in Out-of-Hospital Cardiac Arrest: A Nationwide Cohort Study

    Meilandt, C., Qvortrup, M., Bøtker, M. T., Folke, Fredrik, Borup, L., Christensen, Helle Collatz, Milling, L., Lauridsen, K. G. & Løfgren, B., 2024, In: Journal of the American Heart Association. 13, 7, 9 p., e033913.

    Research output: Contribution to journal › Journal article › Research › peer-review

  5. Published

    Ambulance response times and 30-day mortality: a Copenhagen (Denmark) registry study

    Mills, A. A. M., Mills, E. H. A., Blomberg, S. N. F., Christensen, Helle Collatz, Møller, Amalie Lykkemark, Gislason, Gunnar Hilmar, Køber, Lars Valeur, Kragholm, K. H., Lippert, F., Folke, F., Andersen, M. P. & Torp-Pedersen, Christian, 2024, In: European Journal of Emergency Medicine. 31, 1, p. 59-67 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  6. Published

    Association between mortality and phone-line waiting time for non-urgent medical care: A Danish registry-based cohort study

    Mills, E. H. A., Møller, Amalie Lykkemark, Gnesin, Filip Jurijevitj, Zylyftari, N., Jensen, B., Christensen, Helle Collatz, Blomberg, S. N., Kragholm, K. H., Gislason, Gunnar Hilmar, Køber, Lars Valeur, Gerds, Thomas Alexander, Folke, Fredrik, Lippert, F., Torp-Pedersen, Christian & Andersen, M. P., 2024, In: European Journal of Emergency Medicine. 31, 2, p. 127-135 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  7. Published

    The Danish Nationwide Electrocardiogram (ECG) Cohort

    Polcwiartek, C., Andersen, M. P., Christensen, Helle Collatz, Torp-Pedersen, Christian, Sørensen, Kathrine Kold, Kragholm, K. & Graff, C., 2024, In: European Journal of Epidemiology. 39, p. 325–333 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  8. Accepted/In press

    Emergency Medical Services dispatcher recognition of stroke: A systematic review

    Wenstrup, J., Hestoy, B. H., Sagar, M. V., Blomberg, S. N. F., Christensen, H., Christensen, Helle Collatz & Kruuse, Christina Rostrup, 2024, (Accepted/In press) In: European Stroke Journal. 2 p.

    Research output: Contribution to journal › Review › Research › peer-review

  9. Published

    Foreign body airway obstruction resulting in out-of-hospital cardiac arrest in Denmark – Incidence, survival and interventions

    Wolthers, S. A., Holgersen, M. G., Jensen, J. T., Andersen, M. P., Blomberg, S. N. F., Mikkelsen, S., Christensen, Helle Collatz & Jensen, T. W., 2024, In: Resuscitation. 198, 8 p., 110171.

    Research output: Contribution to journal › Journal article › Research › peer-review

  10. 2023
  11. Published

    All-cause mortality among Danish nursing home residents before and during the COVID-19 pandemic: a nationwide cohort study

    Andersen, M. P., Mills, E. H. A., Meddis, Alessandra, Sørensen, Kathrine Kold, Butt, J. H., Køber, Lars Valeur, Poulsen, Henrik Enghusen, Phelps, M., Gislason, Gunnar Hilmar, Christensen, Helle Collatz, Schou, Morten, Fosbøl, E. L., Gerds, Thomas Alexander, Kragholm, K. & Torp-Pedersen, Christian, 2023, In: European Journal of Epidemiology. 38, p. 523–531 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  12. Published

    The Danish National Child Health Register

    Andersen, M. P., Wiingreen, R., Eroglu, T. E., Christensen, Helle Collatz, Polcwiartek, L. B., Blomberg, S. N. F., Kragholm, K., Torp-Pedersen, Christian & Sørensen, Kathrine Kold, 2023, In: Clinical Epidemiology. 15, p. 1087-1094 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  13. Published

    Recognition of visual symptoms in stroke: a challenge to patients, bystanders, and Emergency Medical Services

    Berg, K. P., Sørensen, V. F. I., Blomberg, S. N. F., Christensen, Helle Collatz & Kruuse, Christina Rostrup, 2023, In: BMC Emergency Medicine. 23, 1, 17 p., 96.

    Research output: Contribution to journal › Journal article › Research › peer-review

  14. Published

    Danish Drowning Formula for identification of out-of-hospital cardiac arrest from drowning

    Breindahl, N., Wolthers, S. A., Jensen, T. W., Holgersen, M. G., Blomberg, S. N. F., Steinmetz, Jacob, Christensen, Helle Collatz & the Danish Cardiac Arrest Group, T. D. C. A. G., 2023, In: American Journal of Emergency Medicine. 73, p. 55-62 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  15. Published

    Evaluation of a critical incident management system on mental health in lifeguard organisations: A retrospective study

    Breindahl, N., Strange, K. F., Østergaard, Doris & Christensen, Helle Collatz, 2023, In: BMJ Open Sport and Exercise Medicine. 9, 1, e001499.

    Research output: Contribution to journal › Journal article › Research › peer-review

  16. Published

    AED applied, not recommending defibrillation – A validation study of the new variable AED in the Danish Cardiac Arrest Registry

    Casarini, E., Wolthers, S. A., Ringgren, K. B., Blomberg, S. N. F. & Christensen, Helle Collatz, 2023, In: Resuscitation. 186, 109725.

    Research output: Contribution to journal › Journal article › Research › peer-review

  17. Published

    Associations between emergency call stroke triage and pre-hospital delay, primary hospital admission, and acute reperfusion treatment among early comers with acute ischemic stroke

    Gude, M. F., Valentin, J. B., Christensen, Helle Collatz, Mikkelsen, S., Søvsø, M. B., Andersen, G., Kirkegaard, H. & Johnsen, S. P., 2023, In: Internal and Emergency Medicine. 18, p. 2355–2365 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  18. Published

    Kunstig intelligens kommer ikke nødvendigvis patienter til gode

    Holm, Sune Hannibal, Blomberg, S. N., Christensen, Helle Collatz & Duedder, Boris, 12 Jun 2023, In: Berlingske. p. 20-21 2 p.

    Research output: Contribution to journal › Contribution to newspaper - Comment/debate › Communication

  19. Published

    Pre-hospital symptoms associated with acute bacterial meningitis differs between children and adults

    Hovmand, N., Christensen, Helle Collatz, Lundbo, L. F., Kronborg, Gitte, Darsø, P., Blomberg, S. N. F. & Benfield, Thomas, 2023, In: Scientific Reports. 13, 1, 9 p., 21479.

    Research output: Contribution to journal › Journal article › Research › peer-review

  20. Published

    "I just haven't experienced anything like this before": A qualitative exploration of callers' interpretation of experienced conditions in telephone consultations preceding a myocardial infarction

    Jensen, B., Vardinghus-Nielsen, H., Mills, E. H. A., Møller, Amalie Lykkemark, Gnesin, Filip Jurijevitj, Zylyftari, N., Kragholm, K., Folke, Fredrik, Christensen, Helle Collatz, Blomberg, S. N., Torp-Pedersen, Christian & Bøggild, H., 2023, In: Patient Education and Counseling. 109, 1 p., 107643.

    Research output: Contribution to journal › Journal article › Research › peer-review

  21. Published

    Geographical Association Between Basic Life Support Courses and Bystander Cardiopulmonary Resuscitation and Survival from OHCA in Denmark

    Jensen, T. W., Ersbøll, A. K., Folke, Fredrik, Andersen, M. P., Blomberg, S. N., Holgersen, M. G., Andersen, L. B., Lippert, F., Torp-Pedersen, Christian & Christensen, Helle Collatz, 2023, In: Open Access Emergency Medicine. 15, p. 241-252 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  22. Published

    Training in Basic Life Support and Bystander-Performed Cardiopulmonary Resuscitation and Survival in Out-of-Hospital Cardiac Arrests in Denmark, 2005 to 2019

    Jensen, T. W., Ersbøll, A. K., Folke, Fredrik, Wolthers, S. A., Andersen, M. P., Blomberg, S. N., Andersen, L. B., Lippert, F., Torp-Pedersen, Christian & Christensen, Helle Collatz, 2023, In: JAMA network open. 6, 3, p. E233338 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  23. Published

    Ethical considerations in the prehospital treatment of out-of-hospital cardiac arrest: A multi-centre, qualitative study

    Milling, L., Nielsen, D. S., Kjær, J., Binderup, L. G., de Muckadell, C. S., Christensen, Helle Collatz, Christensen, E. F., Lassen, A. T. & Mikkelsen, S., 2023, In: PLoS ONE. 18, 7, 19 p., e0284826.

    Research output: Contribution to journal › Journal article › Research › peer-review

  24. Published

    When the machine is wrong. Characteristics of true and false predictions of Out-of-Hospital Cardiac arrests in emergency calls using a machine-learning model

    Nikolaj Blomberg, S., Jensen, T. W., Porsborg Andersen, M., Folke, Fredrik, Kjær Ersbøll, A., Torp-Pedersen, Christian, Lippert, F. & Christensen, Helle Collatz, 2023, In: Resuscitation. 183, 7 p., 109689.

    Research output: Contribution to journal › Journal article › Research › peer-review

  25. Published

    Association of intraosseous and intravenous access with patient outcome in out-of-hospital cardiac arrest

    Nilsson, F. N., Bie-Bogh, S., Milling, L., Hansen, P. M., Pedersen, H., Christensen, E. F., Knudsen, J. S., Christensen, Helle Collatz, Folke, Fredrik, Høen-Beck, D., Væggemose, U., Brøchner, A. C. & Mikkelsen, S., 2023, In: Scientific Reports. 13, 1, 7 p., 20796.

    Research output: Contribution to journal › Journal article › Research › peer-review

  26. Published

    A retrospective study on machine learning-assisted stroke recognition for medical helpline calls

    Wenstrup, J., Havtorn, J. D., Borgholt, L., Blomberg, S. N., Maaloe, L., Sayre, M. R., Christensen, H., Kruuse, Christina Rostrup & Christensen, Helle Collatz, 2023, In: npj Digital Medicine. 6, 1, 8 p., 235.

    Research output: Contribution to journal › Journal article › Research › peer-review

  27. Published

    Dispatcher Stroke/TIA Recognition in Emergency Medical Call Center and Out-of-Hours Service Calls in Copenhagen, Denmark

    Wenstrup, J., Blomberg, S. N., Christensen, Hanne Krarup, Folke, Fredrik, Christensen, Helle Collatz & Kruuse, Christina Rostrup, 2023, In: Neurology: Clinical Practice. 13, 6, 10 p., e200197.

    Research output: Contribution to journal › Journal article › Research › peer-review

  28. Published

    Association between using a prehospital assessment unit and hospital admission and mortality: a matched cohort study

    Wolthers, S. A., Blomberg, S. N. F., Breindahl, N., Anjum, S., Hägi-Pedersen, Daniel, Ersbøll, A., Andersen, L. B. & Christensen, Helle Collatz, 2023, In: BMJ Open. 13, 9, 9 p., e075592.

    Research output: Contribution to journal › Journal article › Research › peer-review

  29. Published

    Traumatic cardiac arrest - a nationwide Danish study

    Wolthers, S. A., Jensen, T. W., Breindahl, N., Milling, L., Blomberg, S. N., Andersen, L. B., Mikkelsen, S., Torp-Pedersen, Christian & Christensen, Helle Collatz, 2023, In: BMC Emergency Medicine. 23, 1, 11 p., 69.

    Research output: Contribution to journal › Journal article › Research › peer-review

  30. Published

    Long-Term Quality of Life After Out-of-Hospital Cardiac Arrest

    Yonis, H., Sørensen, Kathrine Kold, Bøggild, H., Ringgren, K. B., Hansen, Carolina Malta, Granger, C. B., Folke, Fredrik, Christensen, Helle Collatz, Jensen, B., Andersen, M. P., Joshi, V. L., Zwisler, A., Torp-Pedersen, Christian & Kragholm, K., 2023, In: JAMA Cardiology. 8, 11, 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  31. Published

    Registered prodromal symptoms of out-of-hospital cardiac arrest among patients calling the medical helpline services

    Zylyftari, N., Lee, C. J. Y., Gnesin, Filip Jurijevitj, Møller, Amalie Lykkemark, Mills, E. H. A., Møller, S. G., Jensen, B., Ringgren, K. B., Kragholm, K., Christensen, Helle Collatz, Blomberg, S. N. F., Tan, H. L., Folke, Fredrik, Køber, Lars Valeur, Gislason, Gunnar Hilmar & Torp-Pedersen, Christian, 2023, In: International Journal of Cardiology. 374, p. 42-50 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  32. 2022
  33. Published

    To explain or not to explain? Artificial intelligence explainability in clinical decision support systems

    Amann, J., Vetter, D., Blomberg, S. N., Christensen, Helle Collatz, Coffee, M., Gerke, S., Gilbert, T. K., Hagendorff, T., Holm, Sune Hannibal, Livne, M., Spezzatti, A., Strümke, I., Zicari, R. V. & Madai, V. I., 2022, In: PLOS Digital Health. 1, 2, 18 p., e0000016.

    Research output: Contribution to journal › Journal article › Research › peer-review

  34. Published

    Household Exposure to Severe Acute Respiratory Syndrome Coronavirus 2 and Association With Coronavirus Disease 2019 Severity: A Danish Nationwide Cohort Study

    Broccia, M., de Knegt, Victoria Elizabeth, Mills, E. H. A., Møller, Amalie Lykkemark, Gnesin, F., Fischer, Thea Kølsen, Zylyftari, N., Blomberg, S. N., Andersen, M. P., Schou, Morten, Fosbøl, E., Kragholm, K., Christensen, Helle Collatz, Polcwiartek, L. B., Phelps, M., Køber, L. & Torp-Pedersen, Christian, 2022, In: Clinical infectious diseases : an official publication of the Infectious Diseases Society of America. 74, 1, p. 1-7 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  35. Published

    Behavioral factors associated with SARS-CoV-2 infection

    Cajar, M. D., Tan, F. C. C., Boisen, M. K., Krog, S. M., Nolsoee, R., Christensen, Helle Collatz, Andersen, M. P., Moeller, A. L., Gerds, Thomas Alexander, Pedersen-Bjergaard, Ulrik, Lindegaard, Birgitte, Kristensen, Peter Lommer, Christensen, T. B., Torp-Pedersen, Christian & Lendorf, M. E., 2022, In: BMJ Open. 12, 6

    Research output: Contribution to journal › Journal article › Research › peer-review

  36. Published

    Endoskopisk transduodenal fjernelse af galdeblæresten hos patient med nekrotiserende pankreatitis

    Christensen, Helle Collatz, Novovic, Srdan, Karstensen, John Gásdal, Lauritsen, Morten Laksáfoss & Schmidt, P. N., 2022, In: Ugeskrift for Laeger. 184, 40, 3 p., V04220266.

    Research output: Contribution to journal › Journal article › Research › peer-review

  37. Published

    cSocioeconomic Disparities in Prehospital Emergency Care in a Danish Tax-Financed Healthcare System: Nationwide Cohort Study

    Frydenlund, J., Mackenhauer, J., Christensen, E. F., Christensen, Helle Collatz, Væggemose, U., Steinmetz, Jacob & Johnsen, S. P., 2022, In: Clinical Epidemiology. 14, p. 555-565 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  38. Published

    Symptoms reported in calls to emergency medical services within 24 hours prior to out-of-hospital cardiac arrest

    Gnesin, Filip Jurijevitj, Mills, E. H. A., Jensen, B., Møller, Amalie Lykkemark, Zylyftari, N., Bøggild, H., Ringgren, K. B., Kragholm, K., Blomberg, S. N. F., Christensen, Helle Collatz, Lippert, F., Køber, Lars Valeur, Folke, Fredrik & Torp-Pedersen, Christian, 2022, In: Resuscitation. 181, p. 86-96 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  39. Published

    Activation of Citizen Responders to Out-of-Hospital Cardiac Arrest During the COVID-19 Outbreak in Denmark 2020

    Gregers, M. C. T., Andelius, L., Hansen, C. M., Kragh, A. R., Torp-Pedersen, Christian, Christensen, Helle Collatz, Kjoelbye, J. S., Vaeggemose, U., Christensen, E. F. & Folke, Fredrik, 2022, In: Journal of the American Heart Association. 11, 6, 14 p., 024140.

    Research output: Contribution to journal › Journal article › Research › peer-review

  40. Published

    International initiation and termination of resuscitation practices: Protocol of a cross-sectional survey

    Havshøj, U., Juhl, I. M. D., Milling, L., Jørgensen, J. K., Christensen, Helle Collatz, Lippert, F., Morrison, L. J., Mikkelsen, S. & Brøchner, A. C., 2022, In: Acta Anaesthesiologica Scandinavica. 66, 7, p. 904-907 4 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  41. Published

    Pediatric out-of-hospital cardiac arrest in Denmark

    Holgersen, M. G., Jensen, T. W., Breindahl, N., Kjerulff, J. L. B., Breindahl, S. H., Blomberg, S. N. F., Wolthers, S. A., Andersen, L. B., Torp-Pedersen, Christian, Mikkelsen, S., Lippert, F., Christensen, Helle Collatz & Danish Cardiac Arrest Registry Group, D. C. A. R. G., 2022, In: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine. 30, 1, 8 p., 58.

    Research output: Contribution to journal › Journal article › Research › peer-review

  42. Published

    Return to work after COVID-19 infection- A Danish nationwide registry study

    Jacobsen, P. A., Andersen, M. P., Gislason, Gunnar Hilmar, Phelps, M., Butt, J. H., Køber, Lars Valeur, Schou, Morten, Fosbøl, E., Christensen, Helle Collatz, Torp-Pedersen, Christian, Gerds, Thomas Alexander, Weinreich, U. M. & Kragholm, K., 2022, In: Public Health. 203, p. 116-122 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  43. Published

    "Like a rainy weather inside of me": Qualitative content analysis of telephone consultations concerning back pain preceding out-of-hospital cardiac arrest

    Jensen, B., Vardinghus-Nielsen, H., Mills, E. H. A., Møller, Amalie Lykkemark, Gnesin, F., Zylyftari, N., Kragholm, K., Folke, Fredrik, Christensen, Helle Collatz, Blomberg, S. N., Torp-Pedersen, Christian & Boggild, H., 2022, In: International Emergency Nursing. 64, 7 p., 101200.

    Research output: Contribution to journal › Journal article › Research › peer-review

  44. Published

    The National Danish Cardiac Arrest Registry for Out-of-Hospital Cardiac Arrest – A Registry in Transformation

    Jensen, T. W., Blomberg, S. N., Folke, Fredrik, Mikkelsen, S., Rostgaard-Knudsen, M., Juelsgaard, P., Christensen, E. F., Torp-Pedersen, Christian, Lippert, F. & Christensen, Helle Collatz, 2022, In: Clinical Epidemiology. 14, p. 949-957 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  45. Published

    Socio-demographic characteristics of basic life support course participants in Denmark

    Jensen, T. W., Folke, Fredrik, Andersen, M. P., Blomberg, S. N., Jørgensen, A. J., Holgersen, M. G., Ersbøll, A. K., Hendriksen, O. M., Lippert, F., Torp-Pedersen, Christian & Christensen, Helle Collatz, 2022, In: Resuscitation. 170, p. 167-177 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  46. Published

    Functionality of registered automated external defibrillators

    Jespersen, S. S., Kjoelbye, J. S., Christensen, Helle Collatz, Andelius, L., Gregers, M. C. T., Torp-Pedersen, Christian, Hansen, C. M. & Folke, Fredrik, 2022, In: Resuscitation. 176, p. 58-63 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  47. Published

    Non-medical factors in prehospital resuscitation decision-making: a mixed-methods systematic review

    Milling, L., Kjær, J., Binderup, L. G., de Muckadell, C. S., Havshøj, U., Christensen, Helle Collatz, Christensen, E. F., Lassen, A. T., Mikkelsen, S. & Nielsen, D., 2022, In: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine. 30, 1, 32 p., 24.

    Research output: Contribution to journal › Review › Research › peer-review

  48. Published

    Hypothetical interventions on emergency ambulance and prehospital acetylsalicylic acid administration in myocardial infarction patients presenting without chest pain

    Møller, Amalie Lykkemark, Rytgaard, Helene Charlotte Wiese, Mills, E. H. A., Christensen, Helle Collatz, Blomberg, S. N. F., Folke, Fredrik, Kragholm, K. H., Lippert, F., Gislason, Gunnar Hilmar, Køber, Lars Valeur, Gerds, Thomas Alexander & Torp-Pedersen, Christian, 2022, In: BMC Cardiovascular Disorders. 22, 13 p., 562.

    Research output: Contribution to journal › Journal article › Research › peer-review

  49. Published

    The “unclear problem” category: an analysis of its patient and dispatch characteristics and its trend over time

    Otten, S., Rehbock, C., Krafft, T., Haugaard, M. V., Pilot, E., Blomberg, S. N. & Christensen, Helle Collatz, 2022, In: BMC Emergency Medicine. 22, 7 p., 41.

    Research output: Contribution to journal › Journal article › Research › peer-review

  50. Published

    Characteristics of low acuity prehospital emergency patients with 48-h mortality, an observational cohort study

    Petersen, J. A. D., Blomberg, S. N., Lippert, F. & Christensen, Helle Collatz, 2022, In: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine. 30, 64.

    Research output: Contribution to journal › Journal article › Research › peer-review

  51. Published

    Out-of-hospital cardiac arrest: Does rurality decrease chances of survival?

    Ringgren, K. B., Kragholm, K. H., Lindgren, F. L., Jacobsen, P. A., Jørgensen, A. J., Christensen, Helle Collatz, Mills, E. H. A., Jakobsen, L. K., Yonis, H., Folke, Fredrik, Lippert, F. & Torp-Pedersen, Christian, 2022, In: Resuscitation Plus. 9, 100208.

    Research output: Contribution to journal › Journal article › Research › peer-review

  52. Published

    Artificial intelligence in Emergency Medical Services dispatching: assessing the potential impact of an automatic speech recognition software on stroke detection taking the Capital Region of Denmark as case in point

    Scholz, M. L., Christensen, Helle Collatz, Blomberg, S. N. F., Boebel, S., Verhoeven, J. & Krafft, T., 2022, In: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine. 30, 36.

    Research output: Contribution to journal › Journal article › Research › peer-review

  53. Published

    Patient characteristics and dispatch responses of urinary tract infections in a prehospital setting in Copenhagen, Denmark: a retrospective cohort study

    Verhoeven, J., Christensen, Helle Collatz, Blomberg, S. N., Böbel, S., Scholz, M. & Krafft, T., 2022, In: BMC Primary Care. 23, 319.

    Research output: Contribution to journal › Journal article › Research › peer-review

  54. Published

    Out-of-hospital cardiac arrest related to exercise in the general population: Incidence, survival and bystander response

    Wolthers, S. A., Jensen, T. W., Blomberg, S. N., Holgersen, M. G., Lippert, F., Mikkelsen, S., Hendriksen, O. M., Torp-Pedersen, Christian & Christensen, Helle Collatz, 2022, In: Resuscitation. 172, p. 84-91 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  55. Published

    Impact of integrating out-of-hours services into Emergency Medical Services Copenhagen: a descriptive study of transformational years

    Zinger, N. D., Blomberg, S. N., Lippert, F., Krafft, T. & Christensen, Helle Collatz, 2022, In: International Journal of Emergency Medicine. 15, 1, 8 p., 40.

    Research output: Contribution to journal › Journal article › Research › peer-review

  56. 2021
  57. Published

    Risk of coronavirus disease 2019 (Covid-19) contraction and severe infection in home- or healthcare professionals: Home- or Healthcare professionals’ risk of Covid-19

    Andersen, M. P., Østergaard, L., Phelps, M., Butt, J. H., Køber, Lars Valeur, Gislason, Gunnar Hilmar, Christensen, Helle Collatz, Torp-Pedersen, Christian, Schou, Morten, Fosbøl, E. L. & Kragholm, K., Aug 2021, In: Journal of Infection. 83, 2, p. e12-e14 3 p.

    Research output: Contribution to journal › Comment/debate › Research › peer-review

  58. Published

    Effect of Machine Learning on Dispatcher Recognition of Out-of-Hospital Cardiac Arrest During Calls to Emergency Medical Services: A Randomized Clinical Trial

    Blomberg, S. N., Christensen, Helle Collatz, Lippert, F., Ersbøll, A. K., Torp-Pedersen, Christian, Sayre, M. R., Kudenchuk, P. J. & Folke, Fredrik, 2021, In: JAMA Network Open. 4, 1, p. e2032320

    Research output: Contribution to journal › Journal article › Research › peer-review

  59. Published

    Bystander interventions and survival following out-of-hospital cardiac arrest at Copenhagen International Airport

    Gantzel Nielsen, C., Andelius, L. C., Hansen, C. M., Blomberg, S. N. F., Christensen, Helle Collatz, Kjølbye, J. S., Tofte Gregers, M. C., Ringgren, K. B. & Folke, Fredrik, May 2021, In: Resuscitation. 162, p. 381-387 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  60. Published

    Rapid dispatch for out-of-hospital cardiac arrest is associated with improved survival

    Gnesin, F., Møller, A. L., Mills, E. H. A., Zylyftari, N., Jensen, B., Bøggild, H., Ringgren, K. B., Blomberg, S. N. F., Christensen, Helle Collatz, Kragholm, K., Lippert, F., Folke, Fredrik & Torp-Pedersen, Christian, Jun 2021, In: Resuscitation. 163, p. 176-183 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  61. Published

    Nonspecific symptoms dominate at first contact to emergency healthcare services among cases with invasive meningococcal disease

    Hovmand, N., Christensen, Helle Collatz, Lundbo, L. F., Sandholdt, H., Kronborg, Gitte, Darsø, P., Anhøj, J., Blomberg, S. N. F., Bisgaard, A. T. & Benfield, Thomas, 2021, In: BMC Family Practice. 22, 240.

    Research output: Contribution to journal › Journal article › Research › peer-review

  62. Published

    In-Hospital vs. Out-of-Hospital Cardiac Arrest: Patient Characteristics and Survival

    Høybye, M., Stankovic, N., Holmberg, M., Christensen, Helle Collatz, Granfeldt, A. & Andersen, L. W., 2021, In: Resuscitation. 158, p. 157-165

    Research output: Contribution to journal › Journal article › Research › peer-review

  63. Published

    Thrombocytopenia after COVID-19 vaccination

    Kragholm, K., Sessa, Maurizio, Mulvad, T., Andersen, M. P., Christensen, Helle Collatz, Blomberg, S. N., Lippert, F., Mikkelsen, S., Leutscher, P., Melgaard, D., Torp-Pedersen, Christian, Kristensen, S. R., Larsen, T. B. & Søgaard, P., 2021, In: Journal of Autoimmunity. 123, 2 p., 102712.

    Research output: Contribution to journal › Journal article › Research › peer-review

  64. Published

    Live video from bystanders’ smartphones to improve cardiopulmonary resuscitation

    Linderoth, Gitte, Rosenkrantz, O., Lippert, F., Østergaard, Doris, Ersbøll, A. K., Meyhoff, Christian Sylvest, Folke, Fredrik & Christensen, Helle Collatz, 2021, In: Resuscitation. 168, p. 35-43 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  65. Published

    Live video from bystanders’ smartphones to medical dispatchers in real emergencies

    Linderoth, G., Lippert, F., Østergaard, Doris, Ersbøll, A. K., Meyhoff, Christian Sylvest, Folke, Fredrik & Christensen, Helle Collatz, 2021, In: BMC Emergency Medicine. 21, 1, 10 p., 101.

    Research output: Contribution to journal › Journal article › Research › peer-review

  66. Published

    Effect of real-time and post-event feedback in out-of-hospital cardiac arrest attended by EMS - A systematic review and meta-analysis

    Lyngby, R. M., Händel, M. N., Christensen, A. M., Nikoletou, D., Folke, Fredrik, Christensen, Helle Collatz, Barfod, Charlotte & Quinn, T., 2021, In: Resuscitation Plus. 6, p. 1-11 100101.

    Research output: Contribution to journal › Review › Research › peer-review

  67. Published

    Higher resuscitation guideline adherence in paramedics with use of real-time ventilation feedback during simulated out-of-hospital cardiac arrest: A randomised controlled trial

    Lyngby, R. M., Clark, L., Kjoelbye, J. S., Oelrich, R. M., Silver, A., Christensen, Helle Collatz, Barfod, Charlotte, Lippert, F., Nikoletou, D., Quinn, T. & Folke, Fredrik, 2021, In: Resuscitation Plus. 5, p. 1-10 100082.

    Research output: Contribution to journal › Journal article › Research › peer-review

  68. Published

    Emergency Medical Services response levels and subsequent emergency contacts among patients with a history of mental illness in Denmark: a nationwide study

    Mackenhauer, J., Valentin, J. B., Mikkelsen, S., Steinmetz, Jacob, Væggemose, U., Christensen, Helle Collatz, Mainz, J., Johnsen, S. P. & Christensen, E. F., 2021, In: European Journal of Emergency Medicine. 28, 5, p. 363-372 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  69. Published

    Symptom presentation of SARS-CoV-2-positive and negative patients: A nested case-control study among patients calling the emergency medical service and medical helpline

    Moeller, A. L., Mills, E. H. A., Christensen, Helle Collatz, Gnesin, F., Blomberg, S. N. F. N., Zylyftari, N., Jensen, B., Ringgren, K. B., Broccia, M. D., Bøggild, H. & Torp-Pedersen, Christian, 24 May 2021, In: BMJ Open. 11, 5, 9 p., e044208.

    Research output: Contribution to journal › Journal article › Research › peer-review

  70. Published

    Impact ofmyocardial infarction symptom presentation on emergency response and survival

    Møller, Amalie Lykkemark, Mills, E. H. A., Gnesin, F., Jensen, B., Zylyftari, N., Christensen, Helle Collatz, Blomberg, S. N. F., Folke, Fredrik, Kragholm, K. H., Gislason, Gunnar Hilmar, Fosbøl, E., Køber, Lars Valeur, Gerds, Thomas Alexander & Torp-Pedersen, C., 2021, In: European Heart Journal: Acute Cardiovascular Care. 10, 10, p. 1150-1159 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  71. Published

    Cardiovascular comorbidities as predictors for severe COVID-19 infection or death

    Phelps, M., Christensen, D. M., Gerds, Thomas Alexander, Fosbøl, E., Torp-Pedersen, Christian, Schou, Morten, Køber, Lars Valeur, Kragholm, K., Andersson, C., Biering-Sørensen, Tor, Christensen, Helle Collatz, Andersen, M. P. & Gislason, Gunnar Hilmar, 2021, In: European Heart Journal - Quality of Care and Clinical Outcomes. 7, 2, p. 172-180 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  72. Published

    Psychiatric Admissions, Referrals and Suicidal Behavior Before and During the COVID-19 Pandemic in Denmark: A Time-Trend Study

    Rømer, T. B., Christensen, R. H. B., Blomberg, S. N., Folke, Fredrik, Christensen, Helle Collatz & Benros, Michael Eriksen, 2021, In: Acta Psychiatrica Scandinavica. 144, 6, p. 553-562

    Research output: Contribution to journal › Journal article › Research › peer-review

  73. Published

    On assessing trustworthy AI in healthcare: Best practice for machine learning as a supportive tool to recognize cardiac arrest in emergency calls

    Zicari, R. V., Brusseau, J., Blomberg, S. N., Christensen, H. C., Coffee, M., Ganapini, M. B., Gerke, S., Gilbert, T. K., Hickman, E., Hildt, E., Holm, S., Kühne, U., Madai, V. I., Osika, W., Spezzatti, A., Schnebel, E., Tithi, J. J., Vetter, D., Westerlund, M., Wurth, R. & 20 others, Amann, J., Antun, V., Beretta, V., Bruneault, F., Campano, E., Duedder, Boris, Gallucci, A., Goffi, E., Haase, Christoffer Bjerre, Hagendorff, T., Kringen, P., Möslein, F., Ottenheimer, D., Ozols, M., Palazzani, L., Petrin, M., Tafur, K., Tørresen, J., Volland, H. & Kararigas, G., Jul 2021, In: Frontiers in Human Dynamics . 3, 24 p., 673104.

    Research output: Contribution to journal › Journal article › Research › peer-review

  74. 2020
  75. Published

    Smartphone Activation of Citizen Responders to Facilitate Defibrillation in Out-of-Hospital Cardiac Arrest

    Andelius, L., Malta Hansen, C., Lippert, F. K., Karlsson, L., Torp-Pedersen, Christian, Kjær Ersbøll, A., Køber, Lars Valeur, Christensen, Helle Collatz, Blomberg, S. N., Gislason, Gunnar Hilmar & Folke, Fredrik, 2020, In: Journal of the American College of Cardiology. 76, 1, p. 43-53

    Research output: Contribution to journal › Journal article › Research › peer-review

  76. Published

    Does an emergency access button increase the patients' satisfaction and feeling of safety with the out-of-hours health services? A randomised controlled trial in Denmark

    Ebert, J. F., Huibers, L., Christensen, B., Christensen, Helle Collatz & Christensen, M. B., 2020, In: BMJ Open. 10, 9, e030267.

    Research output: Contribution to journal › Journal article › Research › peer-review

  77. Published

    Communication quality in telephone triage conducted by general practitioners, nurses or physicians: a quasi-experimental study using the AQTT to assess audio-recorded telephone calls to out-of-hours primary care in Denmark

    Graversen, D. S., Huibers, L., Christensen, M. B., Bro, F., Christensen, Helle Collatz, Vestergaard, C. H. & Pedersen, A. F., 26 Mar 2020, In: BMJ Open. 10, 3, 12 p., e033528.

    Research output: Contribution to journal › Journal article › Research › peer-review

  78. Published

    Strategies to Handle Increased Demand in the COVID-19 Crisis: A Coronavirus EMS Support Track and a Web-Based Self-Triage System

    Jensen, T., Holgersen, M. G., Jespersen, M. S., Blomberg, S. N., Folke, Fredrik, Lippert, F. & Christensen, Helle Collatz, 2020, In: Prehospital Emergency Care. 25, 1, p. 28-38 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  79. Published

    The Danish Multidisciplinary Hip Fracture Registry 13-Year Results from a Population-Based Cohort of Hip Fracture Patients

    Kristensen, P. K., Röck, N. D., Christensen, Helle Collatz & Pedersen, A. B., 2020, In: Clinical Epidemiology. 12, p. 9-21 13 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  80. Published

    Acute care pathways for patients calling the out-of-hours services

    Søvsø, M. B., Huibers, L., Bech, B. H., Christensen, Helle Collatz, Christensen, M. B. & Christensen, E. F., 27 Feb 2020, In: BMC Health Services Research. 20, 1, 10 p., 146.

    Research output: Contribution to journal › Journal article › Research › peer-review

  81. Published

    Sociodemographic Characteristics Associated with Contacts to Emergency Medical Services and Out-of-Hours Primary Care: An Observational Study of 2.3 Million Citizens

    Søvsø, M. B., Bech, B. H., Christensen, Helle Collatz, Huibers, L., Christensen, E. F. & Christensen, M. B., 2020, In: Clinical Epidemiology. 12, p. 393-401 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  82. 2019
  83. Published

    Sociodemographic and health-related determinants for making repeated calls to a medical helpline: a prospective cohort study

    Blakoe, M., Gamst-Jensen, H., von Euler-Chelpin, My Catarina, Christensen, Helle Collatz & Møller, Tom, 2019, In: BMJ Open. 9, 7, 8 p., 030173.

    Research output: Contribution to journal › Journal article › Research › peer-review

  84. Published

    Reply letter to “Machine learning as a supportive tool to recognize cardiac arrest in emergency calls”

    Blomberg, S. N., Folke, Fredrik, Ersbøll, A. K., Christensen, Helle Collatz, Torp-Pedersen, C., Sayre, M. R., Counts, C. R. & Lippert, F. K., 2019, In: Resuscitation. 144, p. 205-206 2 p.

    Research output: Contribution to journal › Comment/debate › Research

  85. Published

    Injury from electric scooters in Copenhagen: A retrospective cohort study

    Blomberg, S. N. F., Rosenkrantz, O. C. M., Lippert, F. & Christensen, Helle Collatz, Dec 2019, In: BMJ Open. 9, 12, 8 p., e033988.

    Research output: Contribution to journal › Journal article › Research › peer-review

  86. Published

    Contacting out-of-hours primary care or emergency medical services for time-critical conditions - impact on patient outcomes

    Sovso, M. B., Christensen, M. B., Bech, B. H., Christensen, Helle Collatz, Christensen, E. F. & Huibers, L., 7 Nov 2019, In: B M C Health Services Research. 19, 10 p., 813.

    Research output: Contribution to journal › Journal article › Research › peer-review

  87. Published

    Satisfaction of 30 402 callers to a medical helpline of the Emergency Medical Services Copenhagen: A retrospective cohort study

    Zinger, N. D., Blomberg, S. N., Lippert, F. & Christensen, Helle Collatz, 2019, In: BMJ Open. 9, 10, 9 p., e029801.

    Research output: Contribution to journal › Journal article › Research › peer-review

ID: 22768155