Search Results - "Sörnmo, L"

A modified Lewis ECG lead system for ambulatory monitoring of atrial arrhythmias by Petrėnas, A., MS, Marozas, V., PhD, Jaruševičius, G., PhD, Sörnmo, L., PhD

“…Abstract Background When using a reduced ECG lead system with three leads or less, the analysis of atrial activity during arrhythmias can become problematic…”
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Clustering ECG complexes using Hermite functions and self-organizing maps by Lagerholm, M., Peterson, C., Braccini, G., Edenbrandt, L., Sornmo, L.

“…An integrated method for clustering of QRS complexes is presented which includes basis function representation and self-organizing neural networks (NN's). Each…”
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Breathing Pattern Characterization in Chronic Heart Failure Patients Using the Respiratory Flow Signal by Garde, A., Sörnmo, L., Jané, R., Giraldo, B. F.

“…This study proposes a method for the characterization of respiratory patterns in chronic heart failure (CHF) patients with periodic breathing (PB) and…”
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Computer-based detection and analysis of heart sound and murmur by El-Segaier, M, Lilja, O, Lukkarinen, S, Sörnmo, L, Sepponen, R, Pesonen, E

“…To develop a digital algorithm that detects first and second heart sounds, defines the systole and diastole, and characterises the systolic murmur. Heart…”
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Identification of patients prone to hypotension during hemodialysis based on the analysis of cardiovascular signals by Hernando, D, Sörnmo, L, Sandberg, F, Laguna, P, Llamedo, M, Bailón, R

“…Highlights • This study presents a multivariate classifier to discriminate IDH prone and resistant patients. • The first 30 minutes of treatment, when IDH is…”
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Characterization of atrial fibrillation using the surface ECG: time-dependent spectral properties by Stridh, M., Sornmo, L., Meurling, C.J., Olsson, S.B.

“…Time-frequency analysis is considered for characterizing atrial fibrillation in the surface electrocardiogram (ECG). Variations in fundamental frequency of the…”
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Non-invasive assessment of the atrial cycle length during atrial fibrillation in man : Introducing, validating and illustrating a new ECG method by HOLM, M, PEHRSON, S, INGEMANSSON, M, SÖRNMO, L, JOHANSSON, R, SANDHALL, L, SUNEMARK, M, SMIDEBERG, B, OLSSON, C, OLSSON, S. B

“…Atrial fibrillation (AF) in man has previously been shown to include a wide variety of atrial activity. Assessment of the characteristics of this arrhythmia…”
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Estimation of the respiratory frequency using spatial information in the VCG by Leanderson, S., Laguna, P., Sörnmo, L.

“…A new method for extracting respiratory signals from the ECG/VCG is presented. The method is based on the alignment of an observed VCG loop to a reference loop…”
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Changes in high-frequency QRS components are more sensitive than ST-segment deviation for detecting acute coronary artery occlusion by Pettersson, Jonas, Pahlm, Olle, Carro, Elena, Edenbrandt, Lars, Ringborn, Michael, Sörnmo, Leif, Warren, Stafford G, Wagner, Galen S

“…OBJECTIVES This study describes changes in high-frequency QRS components (HF-QRS) during percutaneous transluminal coronary angioplasty (PTCA) and compares the…”
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Automatic detection of ST-T complex changes on the ECG using filtered RMS difference series: application to ambulatory ischemia monitoring by Garcia, J., Sornmo, L., Olmos, S., Laguna, P.

“…A new detector is presented which finds changes in the repolarization phase (ST-T complex) of the cardiac cycle. It operates by applying a detection algorithm…”
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A robust method for ECG-based estimation of the respiratory frequency during stress testing by Bailon, R., Sornmo, L., Laguna, P.

“…A robust method is presented for electrocardiogram (ECG)-based estimation of the respiratory frequency during stress testing. Such ECGs contain highly…”
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Time-varying digital filtering of ECG baseline wander by Sornmo, L

“…Time-varying filtering techniques are applied to the problem of baseline correction by letting the cut-off frequency of a linear filter be controlled by the…”
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Sampling rate and the estimation of ensemble variability for repetitive signals by LAGUNA, P, SÖRNMO, L

“…The measurement of ensemble variability in time-aligned event signals is studied in relation to sampling rate requirements. The theoretical analysis is based…”
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Non-invasive assessment of magnitude and dispersion of atrial cycle length during chronic atrial fibrillation in man by Pehrson, S., Holm, M., Meurling, C., Ingemansson, M., Smideberg, B., Sörnmo, L., Olsson, S.B.

“…Aims Atrial fibrillation cycle lengths can be assessed from right precordial ECG leads and the unipolar oesophageal ECG using a non-invasive method called…”
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Cardiac signal estimation based on the arterial and venous pressure signals of a hemodialysis machine by Holmer, M, Sandberg, F, Solem, K, Olde, B, Sörnmo, L

“…Continuous cardiac monitoring is usually not performed during hemodialysis treatment, although a majority of patients with kidney failure suffer from…”
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Detection of autonomic modulation in permanent atrial fibrillation by STRIDH, M, MEURLING, C, OLSSON, B, SÖRNMO, L

“…A new signal processing method for the detection of cyclic variations in atrial fibrillation frequency is presented. The objective was to investigate whether…”
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Detection of body position changes using the surface electrocardiogram by ASTRÖM, M, GARCIA, J, LAGUNA, P, PAHLM, O, SÖRNMO, L

“…A method for detecting body position changes that uses the surface vectorcardiogram (VCG) is presented. Such changes are often manifested as sudden shifts in…”
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Time course of ECG depolarization and repolarization changes during ischemia in PTCA recordings by Pueyo, E, García, J, Wagner, G, Bailón, R, Sörnmo, L, Laguna, P

“…In this work we studied the temporal evolution of changes in the electrocardiogram (ECG) as a consequence of the induced ischemia during prolonged coronary…”
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QRS Slopes for Detection and Characterization of Myocardial Ischemia by Pueyo, Esther, Sornmo, Leif, Laguna, Pablo

“…In this study, the upward (I US ) and downward (I DS ) slopes of the QRS complex are proposed as indices for quantifying ischemia-induced electrocardiogram…”
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