Fredrik Holmqvist

Summary

Affiliation: Lund University
Country: Sweden

Publications

  1. doi request reprint Abnormal atrial activation in young patients with lone atrial fibrillation
    Fredrik Holmqvist
    Department of Cardiology, Lund University, SE 221 85 Lund, Sweden
    Europace 13:188-92. 2011
  2. doi request reprint Abnormal P-wave morphology is a predictor of atrial fibrillation development and cardiac death in MADIT II patients
    Fredrik Holmqvist
    Department of Cardiology, Lund University Hospital, SE 221 85 Lund, Sweden
    Ann Noninvasive Electrocardiol 15:63-72. 2010
  3. doi request reprint Altered interatrial conduction detected in MADIT II patients bound to develop atrial fibrillation
    Fredrik Holmqvist
    Department of Cardiology, Lund University, Lund, Sweden
    Ann Noninvasive Electrocardiol 14:268-75. 2009
  4. doi request reprint Detailed ECG analysis of atrial repolarization in humans
    Fredrik Holmqvist
    Department of Cardiology, Lund University Hospital, Lund, Sweden
    Ann Noninvasive Electrocardiol 14:13-8. 2009
  5. pmc Signal-averaged P wave analysis for delineation of interatrial conduction - further validation of the method
    Fredrik Holmqvist
    Department of Cardiology, Lund University Hospital, SE 221 85, Lund, Sweden
    BMC Cardiovasc Disord 7:29. 2007
  6. ncbi request reprint Variable interatrial conduction illustrated in a hypertrophic cardiomyopathy population
    Fredrik Holmqvist
    Department of Cardiology, Lund University Hospital, Lund, Sweden
    Ann Noninvasive Electrocardiol 12:227-36. 2007
  7. ncbi request reprint Atrial fibrillatory rate and sinus rhythm maintenance in patients undergoing cardioversion of persistent atrial fibrillation
    Fredrik Holmqvist
    Department of Cardiology, Lund University Hospital, Lund, Sweden
    Eur Heart J 27:2201-7. 2006
  8. ncbi request reprint Atrial fibrillation signal organization predicts sinus rhythm maintenance in patients undergoing cardioversion of atrial fibrillation
    Fredrik Holmqvist
    Department of Cardiology, Lund University Hospital, SE 221 85 Lund, Sweden
    Europace 8:559-65. 2006
  9. pmc Prediction of sinus rhythm maintenance following DC-cardioversion of persistent atrial fibrillation - the role of atrial cycle length
    Carl J Meurling
    Department of Cardiology, Lund University Hospital, SE 221 85 Lund, Sweden
    BMC Cardiovasc Disord 6:11. 2006
  10. ncbi request reprint Atrial fibrillatory rate and risk of left atrial thrombus in atrial fibrillation
    Andreas Bollmann
    Department of Cardiology, Lund University Hospital, Lund, Sweden
    Europace 9:621-6. 2007

Detail Information

Publications26

  1. doi request reprint Abnormal atrial activation in young patients with lone atrial fibrillation
    Fredrik Holmqvist
    Department of Cardiology, Lund University, SE 221 85 Lund, Sweden
    Europace 13:188-92. 2011
    ..However, little is known about the P-wave morphology in patients in the early phases of AF with structurally normal hearts...
  2. doi request reprint Abnormal P-wave morphology is a predictor of atrial fibrillation development and cardiac death in MADIT II patients
    Fredrik Holmqvist
    Department of Cardiology, Lund University Hospital, SE 221 85 Lund, Sweden
    Ann Noninvasive Electrocardiol 15:63-72. 2010
    ....
  3. doi request reprint Altered interatrial conduction detected in MADIT II patients bound to develop atrial fibrillation
    Fredrik Holmqvist
    Department of Cardiology, Lund University, Lund, Sweden
    Ann Noninvasive Electrocardiol 14:268-75. 2009
    ..This study aimed at exploring the association between P-wave morphology and future atrial fibrillation (AF) development in the Multicenter Automatic Defibrillator Trial II (MADIT II) population...
  4. doi request reprint Detailed ECG analysis of atrial repolarization in humans
    Fredrik Holmqvist
    Department of Cardiology, Lund University Hospital, Lund, Sweden
    Ann Noninvasive Electrocardiol 14:13-8. 2009
    ..Data on human atrial repolarization are scarce since the QRS complex normally obscures its ECG trace. In the present study, consecutive patients with third-degree AV block were studied to better describe the human Ta wave...
  5. pmc Signal-averaged P wave analysis for delineation of interatrial conduction - further validation of the method
    Fredrik Holmqvist
    Department of Cardiology, Lund University Hospital, SE 221 85, Lund, Sweden
    BMC Cardiovasc Disord 7:29. 2007
    ..An algorithm for automated classification was designed and its reproducibility of manual P wave morphology classification investigated...
  6. ncbi request reprint Variable interatrial conduction illustrated in a hypertrophic cardiomyopathy population
    Fredrik Holmqvist
    Department of Cardiology, Lund University Hospital, Lund, Sweden
    Ann Noninvasive Electrocardiol 12:227-36. 2007
    ..In the present study, the P-wave morphology of patients with HCM was compared with that of matched controls in order to explore the nature of the atrial conduction alterations...
  7. ncbi request reprint Atrial fibrillatory rate and sinus rhythm maintenance in patients undergoing cardioversion of persistent atrial fibrillation
    Fredrik Holmqvist
    Department of Cardiology, Lund University Hospital, Lund, Sweden
    Eur Heart J 27:2201-7. 2006
    ..The study set out to explore whether an index of atrial electrical electrophysiology can be used to predict atrial fibrillation (AF) relapse, and if the predictive properties differ as a result of arrhythmia duration...
  8. ncbi request reprint Atrial fibrillation signal organization predicts sinus rhythm maintenance in patients undergoing cardioversion of atrial fibrillation
    Fredrik Holmqvist
    Department of Cardiology, Lund University Hospital, SE 221 85 Lund, Sweden
    Europace 8:559-65. 2006
    ..However, the results in clinical studies are conflicting. We assessed the hypothesis that non-invasively obtained atrial fibrillatory organization can be used as a predictor of sinus rhythm (SR) maintenance...
  9. pmc Prediction of sinus rhythm maintenance following DC-cardioversion of persistent atrial fibrillation - the role of atrial cycle length
    Carl J Meurling
    Department of Cardiology, Lund University Hospital, SE 221 85 Lund, Sweden
    BMC Cardiovasc Disord 6:11. 2006
    ....
  10. ncbi request reprint Atrial fibrillatory rate and risk of left atrial thrombus in atrial fibrillation
    Andreas Bollmann
    Department of Cardiology, Lund University Hospital, Lund, Sweden
    Europace 9:621-6. 2007
    ..In contrast, the possible relation between atrial fibrillatory rate obtained from the surface ECG and left atrial thrombus formation in patients with AF is unknown and was consequently evaluated in this study...
  11. doi request reprint Low atrial fibrillatory rate is associated with poor outcome in patients with mild to moderate heart failure
    Pyotr G Platonov
    Department of Cardiology, Clinical Sciences, Lund University, Sweden
    Circ Arrhythm Electrophysiol 5:77-83. 2012
    ..However, the prognostic value of AFR in patients with congestive heart failure (CHF) has not been studied. We sought to evaluate whether AFR can predict outcome in patients with mild to moderate (New York Health Association II-III) CHF...
  12. doi request reprint Interatrial conduction can be accurately determined using standard 12-lead electrocardiography: validation of P-wave morphology using electroanatomic mapping in man
    Fredrik Holmqvist
    Department of Cardiology, Lund University Hospital, Lund, Sweden
    Heart Rhythm 5:413-8. 2008
    ..Different P-wave morphologies during sinus rhythm as displayed on standard ECGs have been postulated to correspond to differences in interatrial conduction...
  13. ncbi request reprint Indices of electrical and contractile remodeling during atrial fibrillation in man
    Fredrik Holmqvist
    Department of Cardiology, Lund University Hospital, Lund, Sweden
    Pacing Clin Electrophysiol 29:512-9. 2006
    ..We explored whether electrical and contractile remodeling correlate in man and explored its clinical implications...
  14. ncbi request reprint Rapid fluctuations in atrial fibrillatory electrophysiology detected during controlled respiration
    Fredrik Holmqvist
    Department of Cardiology, Lund Univ Hospital, SE 221 85 Lund, Sweden
    Am J Physiol Heart Circ Physiol 289:H754-60. 2005
    ..2 (0.23-2.8) (P = 0.01). Controlled respiration causes cyclic fluctuations in the AF frequency in patients with long-duration AF. This phenomenon seems to be related to parasympathetic modulations of the AF refractory period...
  15. doi request reprint Evolution of P-wave morphology in healthy individuals: a 3-year follow-up study
    Rasmus Havmoller
    Department of Cardiology, Lund University, Lund, Sweden
    Ann Noninvasive Electrocardiol 14:226-33. 2009
    ..The stability of P-wave morphology in healthy subjects over time is not fully known...
  16. doi request reprint Atrial fibrillatory rate and irregularity of ventricular response as predictors of clinical outcome in patients with atrial fibrillation
    Pyotr G Platonov
    Lund University Hospital and The Center for Integrative Electrocardiology, Lund University, Lund, Sweden
    J Electrocardiol 44:673-7. 2011
    ..However, RR irregularity measures that can be applied to short-time ECG recordings appear to be promising predictors of clinical outcome...
  17. doi request reprint Preferential conduction patterns along the coronary sinus during atrial fibrillation in humans and their modification by pulmonary vein isolation
    Pyotr G Platonov
    Department of Cardiology, Clinical Sciences, Lund University, and Center for Integrative Electrocardiology at Lund University CIEL, Lund, Sweden
    J Electrocardiol 44:157-63. 2011
    ..This study was aimed at evaluating whether preferential activation patterns along the coronary sinus (CS) exist in patients with AF...
  18. doi request reprint Abnormal atrial activation is common in patients with arrhythmogenic right ventricular cardiomyopathy
    Pyotr G Platonov
    Department of Cardiology and Center for Integrative Electrocardiology at Lund University, Lund, Sweden
    J Electrocardiol 44:237-41. 2011
    ..However, little is known about electrocardiographic signs of atrial involvement in ARVC because no systematic studies have been conducted...
  19. doi request reprint Analysis of atrial fibrillatory rate during spontaneous episodes of atrial fibrillation in humans using implantable loop recorder electrocardiogram
    Pyotr G Platonov
    Department of Cardiology, Clinical Sciences, Lund University, Lund, Sweden
    J Electrocardiol 45:723-6. 2012
    ..05) and reached plateau then. Atrial fibrillatory rate beyond the initial 3 hours can, therefore, be considered stable and may be evaluated for prediction of intervention effect...
  20. doi request reprint Effects of baseline P-wave duration and choice of atrial septal pacing site on shortening atrial activation time during pacing
    Yan Huo
    Department of Cardiology and Center for Integrative Electrocardiology at Lund University, Lund University, SE 221 85 Lund, Sweden
    Europace 14:1294-301. 2012
    ..However, variability of interatrial connections and atrial conduction properties may explain ASP's modest clinical benefit. The aim of this study was to assess the effect of ASP site on the duration of the paced P wave...
  21. doi request reprint Left atrial appendage activity translation in the standard 12-lead ECG
    Pyotr G Platonov
    Department of Cardiology, Lund University, Lund, Sweden
    J Cardiovasc Electrophysiol 22:706-10. 2011
    ..In this study, patients with dissociated left and right atrial rhythms were studied in order to identify which surface electrocardiographic (ECG) leads that most closely reflect the left atrial activity...
  22. doi request reprint Noninvasive estimation of organization in atrial fibrillation as a predictor of sinus rhythm maintenance
    Richard Petersson
    Department of Cardiology, Lund University and Center for Integrative Electrocardiology at Lund University, Lund, Sweden
    J Electrocardiol 44:171-5. 2011
    ..02). As hypothesized, signal entropy was lower in patients who maintained sinus rhythm 4 weeks after cardioversion than in those who did not. However, the overlap was large, making its clinical value limited...
  23. doi request reprint Noninvasive evidence of shortened atrial refractoriness during sinus rhythm in patients with paroxysmal atrial fibrillation
    Fredrik Holmqvist
    Department of Cardiology, Lund University, Lund, Sweden
    Pacing Clin Electrophysiol 32:302-7. 2009
    ..The purpose of this study was to study the Ta wave in subjects with paroxysmal AF during SR with third-degree atrioventricular (AV) block, and in matched controls...
  24. pmc Age-related changes in P wave morphology in healthy subjects
    Rasmus Havmoller
    Department of Cardiology, Lund University Hospital, Lund, Sweden
    BMC Cardiovasc Disord 7:22. 2007
    ..However, there exists little data concerning normal P wave morphology. This study was aimed at exploring orthogonal P wave morphology and its variations in healthy subjects...
  25. ncbi request reprint The diagnostic and prognostic value of brain natriuretic peptides in adults with a systemic morphologically right ventricle or Fontan-type circulation
    David A Larsson
    Department of Cardiology, University Hospital, S 221 85 Lund, Sweden
    Int J Cardiol 114:345-51. 2007
    ..We studied the clinical correlates of measurement of natriuretic peptides (NP) in adults with a right ventricle in the systemic position or with Fontan-type physiology...
  26. ncbi request reprint Non-invasive assessment of atrial electrophysiology: a vital part of the medical work-up in the setting of atrial arrhythmia
    Fredrik Holmqvist
    Cardiol J 15:97-9. 2008