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A New Fiberoptical Respiratory Rate Monitor for the Neonatal Intensive Care Unit
Linköping University, Department of Medicine and Health Sciences, Health Technology Assessment. Linköping University, The Institute of Technology.
Linköping University, Department of Clinical and Experimental Medicine, Pediatrics . Linköping University, Faculty of Health Sciences.
Linköping University, Department of Biomedical Engineering, Physiological Measurements. Linköping University, The Institute of Technology.
Linköping University, Department of Medicine and Health Sciences, Health Technology Assessment. Linköping University, The Institute of Technology.
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2005 (English)In: Pediatric Pulmonology, ISSN 8755-6863 (print), 1099-0496 (online), Vol. 39, no 2, 120-126 p.Article in journal (Refereed) Published
Abstract [en]

A new technique for respiratory rate measurement in the neonatal intensive care unit, fiberoptic respirometry (FORE), was tested using a specially designed nasal adapter. The aim was to investigate the system's accuracy and compare it to the transthoracic impedance (TTI) method and manual counting (MC). Further, the relationship between accuracy and degree of body movement was investigated. Seventeen neonates of median gestational age 35 weeks were included in the study. Video recordings (synchronized with data recordings) were used for classification of body movement. Breaths per minute data were obtained for 23-32-min periods per child, and a subset of these included MC performed by experienced nurses. A Bland-Altman analysis showed low accuracy of both FORE and TTI. A >20% deviation from MC was found in 22.7% and 23.8% of observations for the two methods, respectively. Both methods had accuracy problems during body movement. FORE tended to underestimate respiratory rate due to probe displacement, while TTI overestimated due to motion artefacts. The accuracy was also strongly subject-dependent. The neonates were undisturbed by the FORE device. In some cases, though, it was difficult to keep the adapter positioned in the airway. Further development should, therefore, focus on FORE adapter improvements to maintain probe position over time.

Place, publisher, year, edition, pages
2005. Vol. 39, no 2, 120-126 p.
Keyword [en]
respiratory rate, neonatal monitoring, prematurity, optical sensors, intensive care, apnea
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-14141DOI: 10.1002/ppul.20137OAI: diva2:22709
Available from: 2006-11-13 Created: 2006-11-13 Last updated: 2009-05-29
In thesis
1. Medical Device Innovation: The integrated processes of invention, diffusion and deployment
Open this publication in new window or tab >>Medical Device Innovation: The integrated processes of invention, diffusion and deployment
2006 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

An increased use of medical devices has been assumed to be a major cause of rising healthcare expenditures. Nations around the world are trying to keep costs down, but strong incentives still exist for the development and use of new devices. Innovation is, however, never exclusively good or bad and it is not easy to evaluate the net effect. Theories and empirical research on innovation have been produced for more than 100 years. In this, the diffusion of innovations has attracted the most interest, while other areas, such as the integration of technologies, have been less thoroughly researched.

This thesis presents a model of medical device innovation in hospitals – from the first idea and invention effort to regular use of a new technology. The suggested model is built on three fundaments: (1) academic innovation literature, (2) empirical studies, and (3) observations of on-going innovation processes. The model is a synthesis of the accumulated knowledge in different innovation research traditions, and of empirical studies of the Swedish healthcare system and the medical device industry. The aim is to give a comprehensive picture of the innovation process, and to provide a theoretical model, which can be used for studying and influencing the paths of medical device innovations into healthcare practice.

In order to achieve a balanced rate of change, with long-term societal benefits, an inter-disciplinary approach is necessary in the planning and regulation of medical device innovation. The new model combines academic views with political/entrepreneurial and healthcare views. Innovation, in this model, is suggested to occur in three integrated activity domains: invention, diffusion, and deployment. A great number of factors that influence these activities are investigated and described, and different roles and incentives are discussed. Deviations from traditional innovation theory are for example: (a) integration of invention activities as having an impact on later events; (b) inclusion of the inventor/developer as a main actor also in the diffusion and deployment domains; (c) increased focus of the concept of technology cluster innovation, and (d) the rationality of use and abandonment of knowledge as factors to be included in the estimation of consequences of innovation.

Finally, the thesis suggests a number of model and methodology improvements and policy implications for management of innovation in hospitals.

Place, publisher, year, edition, pages
Institutionen för hälsa och samhälle, 2006
Linköping Dissertations on Health and Society, ISSN 1651-1646 ; 9Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 1040
Innovation, Medical technical products, Spread, Technique use, Technical development, Social change, Innovation, Medicintekniska produkter, Spridning, Teknikanvändning, Seknisk utveckling, Social förändring
National Category
Medical Laboratory and Measurements Technologies
urn:nbn:se:liu:diva-7717 (URN)91-85523-16-X (ISBN)
Public defence
2006-11-02, Aulan, Hälsans hus, Campus US, Linköpings Universitet, Linköping, 09:00 (English)
Available from: 2006-11-13 Created: 2006-11-13 Last updated: 2009-03-10

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Roback, KerstinNelson, NinaJohansson, AndersHass, UrsulaStrömberg, Tomas
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