Abstract:
:A 58-year-old man with hypertensive cardiovascular disease and atrial flutter underwent electrophysiologic studies, including multiple intra-atrial recordings and atrial stimulation. Although the surface ECG suggested the presence of atrial flutter, intra-atrial recordings demonstrated the presence of (1) sinus-like rhythm localized to an area of approximately 5 mm in and around the region of the sinus node, which was protected by entrance block; (2) flutter and/or fibrillation of the remaining parts of the right atrium; (3) fibrillation of the left atrium; and (4) transient degeneration of flutter into fibrillation at right atrial sites, with predominant flutter activity. Although a major part of the right atrium was in flutter and/or fibrillation, we could assess sinus node function by overdrive stimulation of the area of sinus node-activity. Sinus node function studied revealed an underlying sick sinus syndrome.
journal_name
Circulationjournal_title
Circulationauthors
Gomes JA,Kang PS,Matheson M,Gough WB Jr,El-Sherif Ndoi
10.1161/01.cir.63.1.80subject
Has Abstractpub_date
1981-01-01 00:00:00pages
80-6issue
1eissn
0009-7322issn
1524-4539journal_volume
63pub_type
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