Filip Traugott

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Continuous pulse oximetry monitoring was used to determine the incidence of hypoxaemia (arterial oxygen saturation less than or equal to 90%) occurring in the first hour of postoperative recovery. Of 107 patients studied, hypoxaemia was recorded in 80%. Twenty-eight (26%) of these patients had saturations below 80%. The average frequency (i.e., the number(More)
Blood resistivity (rho) values used in the Kubicek formula for stroke volume (SV) calculation by impedance cardiography are bench derived and do not take into account complex blood velocity movements and dynamic hematocrit changes in systole. In this study, the relevance of rho has been questioned. Thoracic resistivity (rho tau) has been calculated in dogs(More)
The Kubicek thoracic cylinder model of impedance cardiography (IC) for measuring beat-by-beat stroke volume (SV) was evaluated in controlled studies using the electromagnetic flowmeter (FM) as the reference technique. Assuming the validity of the Kubicek equation for stroke volume calculation, IC stroke volume was found to be a linear function of EM values(More)
Propofol or methohexitone was given to the same twenty patients on two separate occasions during total intravenous anaesthesia for microlaryngeal surgery. With propofol the quality of induction was superior. Fewer patients required supplementation. Heart rate and blood pressure were well controlled at levels of 110-120% baseline. There were fewer(More)
1. The accuracy and limitations of the non-invasive impedance cardiograph technique were examined in dogs with electromagnetic flow-transducers mounted on the aortic root over a wide range of physiological conditions of anaemia, heart rate, stroke volume and myocardial inotropy. 2. The in vivo blood resistivity (rho-haematocrit relationship is linear and(More)
One of the main problems for underwater terrain navigation using the correlation method is the significant computing time due to the large amount of calculations. When the algorithm is used on a regular PC, the processing time is far too long for real time applications. The Swedish navy is interested in a none-revealing terrain navigation system that can(More)
Suprabulbar and bulbospinal integration of cardiorespiratory responses to cold and heat stress was studied in groups of normal, thalamic and pontine rabbits. The animals sat in an airconditioned environmental chamber in which ambient temperature (TA) was maintained sequentially at 22 degrees C, 12 degrees C, 22 degrees C and 35 degrees C, with an accuracy(More)
Contrasting hypotheses of mammalian thermoregulation were tested in unanesthetized rabbits in relation to the role of the central nervous (CNS) monoamines 5-hydroxytryptamine (5-HT) and noradrenaline (NA) in regulating lung function and ear skin blood flow (Doppler flowmeter). Normal rabbits and rabbits with CNS depletion of 5-HT and NA (caused by the(More)