J
Jo Kramer-Johansen
Researcher at Oslo University Hospital
Publications - 151
Citations - 5720
Jo Kramer-Johansen is an academic researcher from Oslo University Hospital. The author has contributed to research in topics: Cardiopulmonary resuscitation & Intensive care. The author has an hindex of 33, co-authored 138 publications receiving 5205 citations. Previous affiliations of Jo Kramer-Johansen include University of Chicago & Norwegian Air Ambulance.
Papers
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Proceedings Article
Filtering chest compression artifacts improves the performance of VF-detection parameters
Unai Ayala,Unai Irusta,Jesus Ruiz,Felipe Alonso-Atienza,Erik Alonso,Digna M. González-Otero,Jo Kramer-Johansen,Henning Naas,Trygve Eftestøl +8 more
TL;DR: Filtering the CPR artifact improved the detection capacity of most parameters, and showed that combining features after filtering may be a successful strategy for the shock/noshock decision.
Proceedings ArticleDOI
Multimodal Biosignal Analysis Algorithm for the Classification of Cardiac Rhythms During Resuscitation
Haizea Lasa,Unai Irusta,Trygve Eftestøl,Elisabete Aramendi,Ali Bahrami Rad,Jo Kramer-Johansen,Lars Wik +6 more
TL;DR: In this article, the Stationary Wavelet Transform (SWT) was used to obtain 95 features from the ECG and the thorax impedance (TI) signals recorded by the defibrillation pads.
Proceedings Article
A new algorithm to diagnose during chest compressions: Effect on cardiopulmonary resuscitation delivery
Unai Ayala,Unai Irusta,Jesus Ruiz,Digna M. González-Otero,Erik Alonso,Jo Kramer-Johansen,Trygve Eftestøl +6 more
TL;DR: The modified rhythm analysis method modified to increase the reliability of a shock diagnosis by the addition of high and low confidence diagnoses and the combination of several diagnoses before deciding a shock showed promising results.
Journal ArticleDOI
Effect of a positive pressure ventilation-refresher program on ventilation skill performance during simulated newborn resuscitation.
Dana Niles,Christiane Skåre,Elizabeth E. Foglia,Elena Insley,Courtney Cines,Theresa M. Olasveengen,Lance Ballester,Anne Ades,Michael Posencheg,Vinay M. Nadkarni,Jo Kramer-Johansen +10 more
TL;DR: A PPV-Refresher program with brief, repeated psychomotor skill practice significantly improved PPV performance with the greatest improvement in total PPV and target PPV.
Proceedings ArticleDOI
An Accurate Shock Advise Algorithm for Use During Piston-Driven Chest Compressions
Iraia Isasi,Unai Irusta,Elisabete Aramendi,Unai Ayala,Erik Alonso,Jo Kramer-Johansen,Trygve Eftestøl +6 more
TL;DR: In this paper, a new approach for a reliable rhythm analysis during mechanical compressions was introduced, which consists of an artifact supression filter based on the recursive least squares algorithm, and a shock/no-shock decision algorithm based on machine learning techniques that uses features obtained from the filtered ECG.