The tachycardia that outsmarted the SMART

The floating atrial rings are prone to FF QRS sensing because the sensing poles are mounted on a single lead body oriented perpendicularly to the ventricles. [...]atrial ASC requires an increased UT of 75% and a longer latent period of 350 ms to correct for prolonged PR intervals. [...]of the use of...

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Veröffentlicht in:Journal of arrhythmia 2017-08, Vol.33 (4), p.342-344
Hauptverfasser: Foo, David, MBBS, CCDS, FHRS, Chia, Pow-Li, MBBS, Kucher, Andreas, MSc, PhD
Format: Artikel
Sprache:eng
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Zusammenfassung:The floating atrial rings are prone to FF QRS sensing because the sensing poles are mounted on a single lead body oriented perpendicularly to the ventricles. [...]atrial ASC requires an increased UT of 75% and a longer latent period of 350 ms to correct for prolonged PR intervals. [...]of the use of the ASC, 3 atrial events were not sensed. SMART believed now that the ventricular rate was faster than the atrial rate. [...]the VT markers also increased the VT counter.
ISSN:1880-4276
1883-2148
DOI:10.1016/j.joa.2017.02.001