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Attention Score in Context
| Title |
Mechanism of Initiation of Atrial Flutter in Humans: Site of Unidirectional Block and Direction of Rotation 1 1All editorial decisions for this article, including selection of referees, were made by a Guest Editor. This policy applies to all articles with authors from the University of California San Francisco.
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|---|---|
| Published in |
JACC, February 1997
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| DOI | 10.1016/s0735-1097(96)00480-9 |
| Pubmed ID | |
| Authors |
Jeffrey E. Olgin, Jonathan M. Kalman, Leslie A. Saxon, Randall J. Lee, FACC Michael D. Lesh |
| Abstract |
Using a standardized induction protocol, we investigated the mechanism of initiation of atrial flutter, before ablation, to determine the site of initiating unidirectional block and to test the hypothesis that the direction of rotation of atrial flutter depends on the pacing site from which it initiates. The high recurrence rate of atrial flutter after presumed successful ablation may be due to difficulty in reinduction after termination. In addition, induction of clockwise flutter is currently of unknown clinical importance. Ten patients with documented typical flutter were studied before ablation. A standard protocol consisting of single and double extrastimuli followed by burst pacing was performed from four sites in the right atrium (high and low trabeculated and smooth right atrium) to assess efficacy at inducing atrial flutter. A 20-pole halo catheter placed around the tricuspid annulus and a decapole catheter placed in the coronary sinus were used for mapping during initiation to determine type of flutter induced and the site of unidirectional block during initiation. Atrial flutter was induced in 52 (6.2%) of 838 attempted inductions. Of these, 33 were counterclockwise and 20 were clockwise. Of the 20 inductions resulting in clockwise flutter, 18 were from the trabeculated right atrium, whereas all the counterclockwise inductions were from the smooth right atrium. In all but the two inductions, the site of unidirectional block was identified between the os of the coronary sinus and the low lateral right atrium for both counterclockwise and clockwise flutter, in the same isthmus at which ablation is targeted. Even in patients with clinical counterclockwise flutter, clockwise flutter is frequently induced before ablation and is dependent on the site of induction: Pacing from the smooth right atrium induces counterclockwise flutter, whereas pacing from the trabeculated right atrium induces clockwise flutter. The site of the unidirectional block during the initiation of either form of flutter is in the low right atrium isthmus. |
X Demographics
The data shown below were collected from the profiles of 2 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Canada | 1 | 50% |
| United States | 1 | 50% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 2 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 17 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| India | 1 | 6% |
| Unknown | 16 | 94% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Other | 3 | 18% |
| Professor | 3 | 18% |
| Researcher | 3 | 18% |
| Student > Doctoral Student | 2 | 12% |
| Student > Ph. D. Student | 2 | 12% |
| Other | 3 | 18% |
| Unknown | 1 | 6% |
| Readers by discipline | Count | As % |
|---|---|---|
| Medicine and Dentistry | 8 | 47% |
| Agricultural and Biological Sciences | 2 | 12% |
| Biochemistry, Genetics and Molecular Biology | 1 | 6% |
| Psychology | 1 | 6% |
| Computer Science | 1 | 6% |
| Other | 2 | 12% |
| Unknown | 2 | 12% |
Attention Score in Context
This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 25 June 2018.
All research outputs
#16,046,765
of 25,373,627 outputs
Outputs from JACC
#13,651
of 16,741 outputs
Outputs of similar age
#77,892
of 93,673 outputs
Outputs of similar age from JACC
#46
of 50 outputs
Altmetric has tracked 25,373,627 research outputs across all sources so far. This one is in the 34th percentile – i.e., 34% of other outputs scored the same or lower than it.
So far Altmetric has tracked 16,741 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 30.0. This one is in the 17th percentile – i.e., 17% of its peers scored the same or lower than it.
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We're also able to compare this research output to 50 others from the same source and published within six weeks on either side of this one. This one is in the 8th percentile – i.e., 8% of its contemporaries scored the same or lower than it.