Research Topics
| Urban WiklundSummaryCountry: Sweden Publications
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Detail Information
Publications
Wavelet decomposition of cardiovascular signals for baroreceptor function tests in pigsUrban Wiklund
Department of Biomedical Engineering and Informatics, University Hospital, Umea, Sweden
IEEE Trans Biomed Eng 49:651-61. 2002..In addition, the baroslopes were nearly linear when both the LF and HF components were removed using DWT decomposition...
Cardiac autonomic function does not improve after liver transplantation for familial amyloidotic polyneuropathyUrban Wiklund
Department of Biomedical Engineering and Informatics, University Hospital, SE 901 85 Umea, Sweden
Auton Neurosci 156:124-30. 2010..Liver transplantation is the only potentially curative treatment for familial amyloidotic polyneuropathy (FAP). We investigated cardiac autonomic function in 63 transplanted Swedish FAP patients...- Adaptive spatio-temporal filtering of disturbed ECGs: a multi-channel approach to heartbeat detection in smart clothingUrban Wiklund
Department of Biomedical Engineering and Informatics, University Hospital, 901 85, Umea, Sweden
Med Biol Eng Comput 45:515-23. 2007..Adaptive multi-channel spatio-temporal filtering can be used to detect heartbeats in ECGs with high noise levels. One application is heartbeat detection in noisy ECG recordings obtained by integrated textile electrodes in smart clothing... - Abnormal heart rate variability and subtle atrial arrhythmia in patients with familial amyloidotic polyneuropathyUrban Wiklund
Department of Biomedical Engineering and Informatics and Department of Radiation Sciences, Biomedical Engineering, University Hospital, Umea, Sweden
Ann Noninvasive Electrocardiol 13:249-56. 2008..We analyzed heart rate variability (HRV) in FAP patients using power spectrum analysis and Poincaré plot analysis... - Influence of energy drinks and alcohol on post-exercise heart rate recovery and heart rate variabilityUrban Wiklund
Department of Biomedical Engineering and Informatics, University Hospital, Umea, Sweden
Clin Physiol Funct Imaging 29:74-80. 2009..This study investigated changes in the electrocardiogram (ECG) and heart rate variability after intake of an energy drink, taken in combination with alcohol and exercise... - Classification of neck movement patterns related to whiplash-associated disorders using neural networksHelena Grip
Department of Biomedical Engineering and Informatics, University Hospital, 90185 Umea, Sweden
IEEE Trans Inf Technol Biomed 7:412-8. 2003..This shows that neck movement analysis combined with a neural network could build the basis of a decision support system for classifying suspected WAD, even though further evaluation of the method is needed... - Liver transplantation does not prevent the development of life-threatening arrhythmia in familial amyloidotic polyneuropathy, Portuguese-type (ATTR Val30Met) patientsRolf Hörnsten
Department of Surgical and Perioperative Sciences, Clinical Physiology, Umea University, Umea, Sweden
Transplantation 78:112-6. 2004.... - Heart complications in familial transthyretin amyloidosis: impact of age and genderRolf Hörnsten
Department of Surgical and Perioperative Science, Umea University, Clinical Physiology, Heart Centre, Umea, Sweden
Amyloid 17:63-8. 2010..These findings highlight the necessity of 24-h ECGs to detect conduction disturbances, due to their occurrence in the absence of echocardiographic evidence of amyloid deposition in the myocardium... - Outcome of heart rate variability and ventricular late potentials after liver transplantation for familial amyloidotic polyneuropathyRolf Hörnsten
Clinical Physiology, Heart Center, University Hospital, Umea, and Department of Surgical and Perioperative Sciences, Clinical Physiology, Umea University, Umea, Sweden
Amyloid 15:187-95. 2008..If an increase of HRV after transplantation is observed, it should raise the suspicion that the patient has developed subtle atrial arrhythmia... - Electromagnetic field exposure and health among RF plastic sealer operatorsJonna Wilén
National Institute for Working Life, Umea, Sweden
Bioelectromagnetics 25:5-15. 2004..Further, RF operators had a significantly lower heart rate (24 h registration) and more episodes of bradycardia compared to controls... - Ventricular late potentials in familial amyloidotic polyneuropathyRolf Hörnsten
Clinical Physiology, Heart Centre, University Hospital, Umea, Sweden
J Electrocardiol 39:57-62. 2006..Long-term follow-up studies are required to find the prognostic significance of these new findings... - Changes in heart rate variability among RF plastic sealer operatorsJonna Wilén
National Institute for Working Life, Umea, Sweden
Bioelectromagnetics 28:76-9. 2007..This could in turn be due to an adaptation of the thermoregulatory system and the cardiac autonomic modulation to a long-term low-level thermal exposure in the RF operators... - Arrhythmia--a pitfall in tests of cardiac autonomic function after liver transplantation for familial amyloidotic polyneuropathy: a long-term follow-up of Swedish patientsRolf Hörnsten
Department of Surgical and Perioperative Sciences, Clinical Physiology, Heart Centre, Umea University, Sweden
Amyloid 19:81-6. 2012..In the minority of patients with sinus rhythm in all recordings, cardiac autonomic modulation remained stable after transplantation and no improvement was noted... - Blood pressure overshoot after tilt reversal in patients with familial amyloidotic polyneuropathyKonen Obayashi
Department of Medicine, Umea University Hospital, Umea, Sweden
Hypertens Res 34:133-8. 2011..In addition, assessment of the post-tilt BP reaction points to possible treatment modalities for orthostatic hypotension at least in the early stages of the disease... - Parasympathetic dysfunction in hypertrophic cardiomyopathy assessed by heart rate variability: comparison between short-term and 24-h measurementsStellan Morner
Department of Medicine, University Hospital, Umea, Sweden
Clin Physiol Funct Imaging 25:90-9. 2005..We also show that short- and long-term methods yield similar results, suggesting that a short-term registration might be sufficient to assess HRV in patients with HCM... - Serial assessment of variability in heart rate in children with the Fontan circulationAnnika Rydberg
Department of Clinical Sciences, Section of Paediatric Cardiology, University Hospital, Umea, Sweden
Cardiol Young 15:498-503. 2005..Our study shows that, in patients with the Fontan circulation, routine ambulatory electrocardiographic monitoring including analysis of variability in heart rate, detects over time a progressive sympatovagal imbalance... 
Automatic filtering of outliers in RR intervals before analysis of heart rate variability in Holter recordings: a comparison with carefully edited dataMarcus Karlsson
Department of Radiation Sciences, Biomedical Engineering, and Centre of Biomedical Engineering and Physics, Umea University, Umea, Sweden
Biomed Eng Online 11:2. 2012..This study compared common frequency domain indices of HRV when determined from manually edited and automatically filtered RR intervals...- Sound and vibration: effects on infants' heart rate and heart rate variability during neonatal transportBjörn Markus Karlsson
Department of Clinical Sciences, Umea University, Sweden
Acta Paediatr 101:148-54. 2012..To measure the effect of sound and whole-body vibration on infants' heart rate and heart rate variability during ground and air ambulance transport... - Heart rate variability in children with Fontan circulation: lateral tunnel and extracardiac conduitJenny Alenius Dahlqvist
Department of Clinical Sciences, Umea University, Umea, Sweden
Pediatr Cardiol 33:307-15. 2012..0001), and HF (P = 0.001) compared with the control subjects. The LT and EC patients did not differ significantly. Reduced HRV was found in both the LT and EC patients. In terms of HRV reduction, EC was not superior to LT... - Comparison of quantitative sensory testing and heart rate variability in Swedish Val30Met ATTRVictoria Heldestad
Department of Pharmacology and Clinical Neurosciences, Umea University, Umea, Sweden
Amyloid 18:183-90. 2011..This is of particular importance as the phenotype of the ATTR disease varies between groups with different age of onset... - Acute effects on heart rate variability when exposed to hand transmitted vibration and noiseBodil Björ
Department of Public Health and Clinical Medicine, Occupational Medicine, Umea University, 901 87 Umea, Sweden
Int Arch Occup Environ Health 81:193-9. 2007..This study investigates possible acute effects on heart rate variability (HRV) when people are exposed to hand transmitted vibration and noise individually and simultaneously... - Wavelet coherence detects non-autonomic heart rate fluctuations in familial amyloidotic polyneuropathyNils Ostlund
Department of Biomedical Engineering and Informatics, University Hospital, Umea, Sweden
Conf Proc IEEE Eng Med Biol Soc 2007:4660-2. 2007..The results showed that wavelet coherence is a promising method for studying respiratory related fluctuations in heart rate... - Dysregulation of subcutaneous adipose tissue blood flow in overweight postmenopausal womenJonas Andersson
Department of Public Health and Clinical Medicine, Umea University Hospital, Umea, Sweden
Menopause 17:365-71. 2010..The present work aimed to analyze possible changes in ATBF with being overweight and menopausal and its putative link to endothelial dysfunction and autonomic nervous system balance... - Nondipolar content of T wave derived from a myocardial source simulation with increased repolarization inhomogeneityMilos Kesek
Department of Cardiology, Heart Center, University Hospital, Umea, Sweden
Ann Noninvasive Electrocardiol 14:185-92. 2009..This computer simulation study examines the link between increased nondipolar components and increased repolarization inhomogeneity in an established model... - Autonomic nerve system responses for normal and slow rewarmers after hand cold provocation: effects of long-term cold climate trainingHelge Brändström
Department of Surgical and Perioperative Sciences, Anesthesiology and Intensive Care Medicine, Umea University, 901 87 Umea, Sweden
Int Arch Occup Environ Health 86:357-65. 2013.... - Heart rate variability during sedentary work and sleep in normal and sleep-deprived statesJohannes van den Berg
National Institute of Working Life, Umea, Sweden
Clin Physiol Funct Imaging 25:51-7. 2005..These HRV components were also significantly and negatively correlated with delta power densities. HRV does not seem to be a viable indicator of sleepiness; however, HRV may be useful for determining sleep stages... - Holter ECG monitoring in patients with perceived electrical hypersensitivityMonica Sandström
National Institute for Working Life, P O Box 7654, S 907 13, Umea, Sweden
Int J Psychophysiol 49:227-35. 2003..EHS patients had a disturbed pattern of circadian rhythms of HRV and showed a relatively 'flat' representation of hourly-recorded spectral power of the HF component of HRV... - Chronic whiplash associated disorders and neck movement measurements: an instantaneous helical axis approachFredrik Ohberg
Department of Biomedical Engineering and Informatics, University Hospital, Umeå SE 90185, Sweden
IEEE Trans Inf Technol Biomed 7:274-82. 2003..g., angular velocity and range, symmetry of motion). Statistically significant differences were found between controls and subjects with chronic WAD in a number of variables... - Increased risk of stroke in patients with coronary artery disease and sleep apnea: a 10-year follow-upFredrik Valham
Department of Respiratory Medicine, University Hospital, Umea, Sweden
Circulation 118:955-60. 2008..The effect of sleep apnea on mortality and cardiovascular morbidity is mainly unknown. We aimed to study whether sleep apnea is related to stroke, death, or myocardial infarction in patients with symptomatic coronary artery disease... - Adaptive method for assessment of cerebrospinal fluid outflow conductanceNina Andersson
Department of Biomedical Engineering and Informatics, Umea University Hospital, 901 85, Umea, Sweden
Med Biol Eng Comput 45:337-43. 2007..3 +/- 5.9 min (mean +/- SD), p<0.01. The reduction of reliability in the C(out) estimation was found clinically negligible. We thus recommend this adaptive method to be used when performing constant pressure infusion tests... - EMLA cream and oral glucose for immunization pain in 3-month-old infantsViveca Lindh
Department of Clinical Sciences, Pediatrics, University Hospital, Umea University, S 901 85 Umea, Sweden
Pain 104:381-8. 2003..EMLA and glucose alleviate immunization pain in 3-month-old infants... - Dysregulation of the autonomic nervous system can be a link between visceral adiposity and insulin resistanceStina Lindmark
Department of Medicine, Umea University Hospital, S 901 85 Umea, Sweden
Obes Res 13:717-28. 2005..To evaluate the interplay among abdominal adipose tissue distribution, the cortisol axis, the autonomic nervous system, and insulin resistance...