Proximity of Right Coronary Artery to Cavotricuspid Isthmus as Determined by Computed Tomography
Yükleniyor...
Dosyalar
Tarih
2010
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Wiley-Blackwell
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Background: Radiofrequency ablation of atrial flutter is a commonly performed procedure. Ablation success depends upon complete transmural atrial tissue injury to achieve bidirectional cavotricuspid isthmus (CTI) block. Transmural ablation increases risk of injury to the adjacent right coronary artery (RCA). Distance between the RCA and the endocardium within the CTI area is not well described. We aimed to perform in vivo measurements of the distance between the CTI area and adjacent RCA. Methods: Thirty-three consecutive patients underwent electrocardiogram-gated contrast-enhanced computed tomography. CTI area was divided into nine segments based on three common catheter locations (paraseptal, central, and lateral or 5, 6, and 7 o'clock) and ventricular to atrial ablation line. Results: Mean age was 64 +/- 11 years and 97% of the participants were male. Paraseptal, central, and lateral measurements at the tricuspid annulus ridge showed endocardial to RCA distance 9 +/- 3, 6 +/- 2, and 5 +/- 3 mm, respectively (range 2-17 mm). Corresponding measurements for the ventricular side were 5 +/- 3, 4 +/- 2, and 4 +/- 2 mm and atrial side measurements were 3 +/- 2, 3 +/- 2, and 3 +/- 3 mm. Distance was < 2 mm in 14% of segments on the ventricular side and 39% of segments on the atrial side. Paired t-test showed significant difference (P < 0.001) between tricuspid annulus ridge measurements and adjacent atrial or ventricular measurements. Conclusions: Distance between endocardium and RCA lumen is reduced in areas adjacent to the tricuspid annulus ridge.
Açıklama
Anahtar Kelimeler
Ablation, Electrophysiology-clinical, Svt, Radiology
Kaynak
Pace-Pacing and Clinical Electrophysiology
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
33
Sayı
Künye
Al Aloul, B., Sigurdsson, G., Can, İ., Li, J.-M., Dykoski, R., Tholakanahalli, V. N., (2010). Proximity of Right Coronary Artery to Cavotricuspid Isthmus as Determined by Computed Tomography. Pace-Pacing and Clinical Electrophysiology, (33), 1319-1323. Doi: 10.1111/j.1540-8159.2010.02844.x
