Signal‐Averaged P Wave Duration and the Dimensions of the Atria
| Autor: | Jan Parner, Ulrik Dixen, Bo V. Rasmussen, Gorm B. Jensen, Christian Joens |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2004 |
| Předmět: |
Adult
Male medicine.medical_specialty Atrial enlargement Right atrial Electrocardiography Left atrial Heart Conduction System Risk Factors Physiology (medical) Internal medicine Linear regression medicine P wave duration Humans cardiovascular diseases Heart Atria Aged Aged 80 and over business.industry P wave General Medicine Original Articles Middle Aged Signal-averaged electrocardiogram medicine.anatomical_structure Echocardiography Cardiology cardiovascular system Linear Models Right atrium Female medicine.symptom Cardiology and Cardiovascular Medicine business |
| Popis: | Background: Delay of atrial electrical conduction measured as prolonged signal-averaged P wave duration (SAPWD) could be due to atrial enlargement. Here, we aimed to compare different atrial size parameters obtained from echocardiography with the SAPWD measured with a signal-averaged electrocardiogram (SAECG). Methods: In 74 patients scheduled for elective echocardiography, an SAECG was recorded directly after the echocardiogram. We measured the SAPWD and registered clinical characteristics. The correlation between the SAPWD and the left atrial diameter (LAD), left atrial volume (LAV), right atrial volume (RAV), and total atrial volume (TAV) was analyzed by linear regression analyses. The effect of concomitant risk factors on TAV and the SAPWD was examined. Results: Linear regression analysis showed that the correlation between the SAPWD and the LAD was significant (R2= 0.11, P = 0.03). However, LAV (R2= 0.15, P = 0.009), RAV (R2= 0.27, P = 0.0003), and TAV (R2= 0.37, P < 0.0001) were more strongly correlated to the SAPWD. The TAV and the SAPWD were not significantly associated with coexisting risk factors. Conclusions: The SAPWD is significantly correlated to the atrial size; most strongly to the TAV. The size of the right atrium, with the sinus node area, appears to affect the SAPWD. |
| Databáze: | OpenAIRE |
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