OJEMB, ArticlesPathologic blood samples tolerate exposure to vibration and high turbulence in simulated drone flights, but plasma samples should be centrifuged after flight.
Karl Arne Johannessen, Nina Kristin Steen Wear, Karin Toska, Morten Hansbø, Jens Petter Berg, Erik Fosse
Abstract: Most of the previous studies of drone transport of blood samples examined normal blood samples transported under tranquil air conditions. We studied the effects of 1- and 2-hour drone flights using random vibration and turbulence simulation (10-30 g-force) on... Read more
Posted on 23 JAN 2021
TBME, Featured ArticlesContinuous estimation of acute changes in preload using epicardially attached accelerometers
Magnus Reinsfelt Krogh, Per Steinar Halvorsen, Ole-Johannes H. N. Grymyr, Jacob Bergsland, Ole Jakob Elle, Erik Fosse, Espen W. Remme
Changes in left ventricular preload can be measured by an accelerometer attached to the epicardium by assessing the changes in the first heart sound frequency. As end-diastolic volume and myocardial stiffness increases, the frequency of the myocardial vibrations associated with the first heart sound also increases and vice versa. We tested this hypothesis in an animal model with changing volume status and found that these novel accelerometer-based measurements were comparable to the current clinical standard methods, both to estimate preload and in identifying fluid responsiveness, i.e. a positive response to fluid administration... Read more
Posted on 30 JUN 2021