Single-loop incisional atrial tachycardia encircling the entire right atrium: Where is the critical isthmus?
نویسندگان
چکیده
منابع مشابه
Bystander cavo-tricuspid isthmus activation during post-incisional intra-atrial reentrant tachycardia.
We describe a case of post-incisional atrial tachycardia resembling typical atrial flutter on the surface ECG. Typical atrial flutter reentry was ruled out by the results of activation and entrainment mapping. Nevertheless, overdrive pacing from the lateral edge of the cavo-tricuspid isthmus produced tachycardia entrainment with concealed fusion associated with post-pacing and stimulus-to-P wav...
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Tachycardias after atrial incisions represent frequent and serious problem. The majority of them are based on a re-entry electrical activation around a combination of anatomic and surgically created obstacles. Considering significant progress of cardiovascular surgery during the last decade along with potential large amount of open-heart procedures in the near future the number of incisional ta...
متن کاملCharacterization of reentrant circuits in left atrial macroreentrant tachycardia: critical isthmus block can prevent atrial tachycardia recurrence.
BACKGROUND Left atrial macroreentrant tachycardia (LAMRT) has not been characterized in detail. METHODS AND RESULTS Twenty-eight patients with LAMRT, including 4 patients with ablated typical atrial flutter (AFL), underwent electroanatomic mapping of the left atrium (LA) between February 1999 and October 2001. LA maps were performed during LAMRT in 26 patients and during sinus rhythm in 2 pat...
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Incisional sustained tachycardias are frequent in patients who have undergone a surgical repair of interatrial defect. A 43-year-old woman with drug refractory, highly symptomatic, persistent atrial tachycardia in the last year, was referred to our unit for catheter ablation. The patient had undergone a cardiac operation for repairing interatrial secundum ostium type defect with a patch five ye...
متن کاملIncisional Atrial Tachycardia Masquerading As Counter-clockwise Atrial Flutter
Forty-four-year-old male patient with surgical closure of ostium secundum type atrial septal defect at the age of 9 years had undergone radiofrequency catheter ablation of the cavotricuspid isthmus because of recurrent drug-resistant typical isthmus-dependent atrial flutter, with bidirectional isthmus block achieved. Only few days later he started to suffer again high-rate tachycardia. An atypi...
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ژورنال
عنوان ژورنال: HeartRhythm Case Reports
سال: 2021
ISSN: 2214-0271
DOI: 10.1016/j.hrcr.2020.12.003