Atrial Fibrillation
Conditions
Keywords
atrial fibrillation, p-wave, hospitalization
Brief summary
It is suggested that P-wave terminal force (Ptf), a product of the amplitude (PAM) and the duration (PT) of the terminal phase of P-wave in lead V1, shows early delay in left atrial conduction, observed earlier that the dilatation of left atrium. The aim is to follow PT, PAM and Ptf changes during 5-year follow-up (5FU) and examine the relation of these changes to the number of AF episodes requiring hospitalisation (HOSP) for restoration of sinus rhythm (RSR).
Detailed description
Background. It is suggested that P-wave terminal force (Ptf), a product of the amplitude (PAM) and the duration (PT) of the terminal phase of P-wave in lead V1, shows early delay in left atrial conduction, observed earlier that the dilatation of left atrium. Aim. We aim to follow PT, PAM and Ptf changes during 5-year follow-up (5FU) and examine the relation of these changes to the number of AF episodes requiring hospitalisation (HOSP) for restoration of sinus rhythm (RSR). We hypothesise that, in patients with atrial fibrillation (AF): 1. the index parameters (PT, PAM, Ptf), characterising left atrial repolarization, correlates the number of future hospitalisations (HOSP) aimed for restoration of sinus rhythm (RSR) in 5-year follow-up (5FU) 2. in 5FU the number of HOSP aimed for RSR correlates with the progression of left atrium electrical remodelling, expressed as PAM5,PT5, Ptf5 at 5FU.
Interventions
PROCEDUREcardioversion
Direct current (DC) cardioversion for sinus rhythm restoration
Sponsors
Medical University of Lublin
Study design
Observational model
COHORT
Time perspective
RETROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to 90 Years
Healthy volunteers
No
Inclusion criteria
* documented atrial fibrillation at admission * successful restoration of sinus rhythms documented in 12-leads ECG, * follow-up =\> 5 years
Exclusion criteria
* arrhythmia other than atrial fibrillation at admission, * unsuccessful restoration of sinus rhythms, * successful restoration of sinus rhythms but missing 12-leads ECG recording, * previous ablation/operation within left atrium, * follow-up \< 5 years
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Changes of P-wave time (PT), P-wave amplitude (PAM) and Ptf (P wave terminal force terminal V1-lead ) in 5-year follow-up (5FU). | 5 years | All measurements based on ECG recording during sinus rhythm only. * P-wave time (PT) defined as time (measured in milliseconds, \[ms\]) of negative deflection of P wave in V1 lead of the standard 12-lead ECG; * P-wave amplitude (PAM) defined as maximum amplitude (measured in millivolts, \[mV\]) of negative deflection of P wave in V1 lead of the standard 12-lead ECG; * P-wave terminal force (Ptf) is a product of the amplitude and the duration of the terminal phase of P-wave in lead V1; Ptf = PT x PAM \[ms x mV\]; * PT and PAM measured at index is defined as PT0 and PAM0, respectively * Calculated Ptf as a product of PT0 and PAM0 is defined as Ptf0; * PT and PAM measured at 5FU is defined as PT5 and PAM5, respectively; * Calculated Ptf as a product of PT5 and PAM5 is defined as Ptf5; * The change between PT0 and PT5 (PTC = PT5 - PT0) , PAM0 and PAM5 (PAMC = PAM5 - PAM0), Ptf0 and Ptf5 (PtfC = Ptf5 - Ptf0) will be calculated for each patient; |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Correlation between index PT0, PAM0, Ptf0 and number of hospitalizations (HOSP) in 5-year follow-up | 5 years | Statistical analysis of Correlation between index PT0, PAM0, Ptf0 and number of hospitalizations (HOSP) in 5-year follow-up |
| Correlation between number of hospitalizations (HOSP) in 5- year follow-up and final PT5, PAM5, Ptf5 at the end of 5-year follow-up period. | 5 years | Statistical analysis of Correlation between number of hospitalizations (HOSP) in 5- year follow-up and final PT5, PAM5, Ptf5 at the end of 5-year follow-up period. |
| Correlation between changes of PT, PAM, Ptf (PTC, PAMC, PtfC) and number of hospitalizations (HOSP) in 5-year follow-up. | 5 years | Statistical analysis of Correlation between changes of PTC, PAMC, PtfC and number of hospitalizations (HOSP) in 5-year follow-up. |
Countries
Poland
Contacts
Primary ContactMaciej Wójcik, MD, PhD
Outcome results
None listed