Is respiratory sinus arrhythmia present in atrial fibrillation? A study using two quantitative methods
| Autor: | S.T. Chandler, P.N. Trewby |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Male
medicine.medical_specialty Heart disease Rest Biomedical Engineering Biophysics Diaphragmatic breathing Sensitivity and Specificity Electrocardiography Bias Heart Rate Internal medicine Heart rate Atrial Fibrillation medicine Humans Arrhythmia Sinus cardiovascular diseases Vagal tone Aged Aged 80 and over medicine.diagnostic_test business.industry Incidence Respiration Atrial fibrillation Signal Processing Computer-Assisted Vagus Nerve Middle Aged medicine.disease Vagus nerve Anesthesia Case-Control Studies cardiovascular system Breathing Cardiology Female business |
| Zdroj: | Medical engineeringphysics. 16(4) |
| ISSN: | 1350-4533 |
| Popis: | Two quantitative techniques have been evaluated to examine whether respiratory sinus arrhythmia can be detected in atrial fibrillation. Cyclical changes in heart rate during deep breathing indicating respiratory sinus arrhythmia were seen in 11/15 control patients, but only 1/44 patients with atrial fibrillation. Power spectrum analysis suggested that more subtle variations in heart rate with breathing may be present in some patients with atrial fibrillation where it was not detectable by simpler techniques. These results support the hypothesis that although respiratory sinus arrhythmia is not detectable in atrial fibrillation by conventional means, there may still be some mediation of heart rate either by vagal or extravagal mechanisms. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|