A new procedure for chronic atrial fibrillation: bilateral appendage-preserving maze procedure
| Autor: | Yasuyuki Kato, Keima Nagamachi, Fumitaka Isobe, Yasuyuki Sasaki, Hiroshi Kumano, Seiji Kinugasa, Takumi Ishikawa |
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| Rok vydání: | 2001 |
| Předmět: |
Pulmonary and Respiratory Medicine
Male medicine.medical_specialty Heart disease Hemodynamics Postoperative Complications Atrial natriuretic peptide Internal medicine Atrial Fibrillation medicine Chronic atrial fibrillation Humans Sinus rhythm Cardiac Surgical Procedures Treadmill exercise test Aged Ejection fraction business.industry Atrial fibrillation Middle Aged medicine.disease Atrial Function Anesthesia Chronic Disease Cardiology Surgery Female Cardiology and Cardiovascular Medicine business psychological phenomena and processes Atrial Natriuretic Factor Follow-Up Studies |
| Zdroj: | The Annals of thoracic surgery. 72(5) |
| ISSN: | 0003-4975 |
| Popis: | Atrial transport and atrial natriuretic peptide secretion is severely reduced from normal after the maze III procedure. To improve these factors, we developed a bilateral appendage-preserving maze procedure (BAP-maze).Forty-six patients with chronic atrial fibrillation who underwent the BAP-maze procedure were compared with 40 patients who underwent the maze III procedure. The ratio of the peak velocity of the A and E waves of transmitral flow (transthoracic pulsed Doppler echocardiography), the left atrial appendage ejection fraction (transesophageal echocardiography), and the atrial natriuretic peptide secretory reserve during treadmill exercise test were measured at 6 months postoperatively.Sinus rhythm was restored in 44 patients (95.7%) by the BAP-maze procedure and in 39 patients (97.5%) by the maze III procedure. The ratio of the peak velocity of the A and E waves was 0.52 +/- 0.22 in the BAP-maze group and 0.25 +/- 0.19 in the maze III group (p0.0001). The left atrial appendage ejection fraction was 44.7% +/- 11.5%, and the atrial natriuretic peptide secretory reserve was greater in the BAP maze group (p = 0.037).The BAP-maze procedure improved atrial transport and atrial natriuretic peptide secretion as well as simplifying the maze operation, without decreasing its effectiveness against atrial fibrillation. |
| Databáze: | OpenAIRE |
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