High density mapping of inappropriate sinus tachycardia further looks into potential mechanisms
نویسندگان
چکیده
Inappropriate sinus tachycardia (IST) is an incompletely understood condition associating unexpectedly fast sinus rates and debilitating symptoms whose management by sinus node modification/ablation demonstrated limited long-term success. We report about a case of IST who underwent two RF procedures using high density mapping system, highlighting some possibly specific features and discussing potential mechanisms.
منابع مشابه
Insights from preclinical ultra high-density electroanatomical sinus node mapping.
AIMS Although sinus node modification by catheter ablation is an established therapy for the treatment of inappropriate sinus tachycardia, there is incomplete understanding of sinus node anatomy and function but also limited electroanatomical mapping data. Recently, an automatic, ultra high-resolution mapping system has been presented to accurately and quickly identify right atrial (RA) geometr...
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A 20-year-old woman underwent an electrophysiological study for drug-resistant persistent inappropriate sinus tachycardia (IST). Use of a high-dose continuous intravenous administration of landiolol, a short-acting beta-adrenoreceptor blocker, made the patient׳s heart rate suddenly drop with a slight change in the P-wave morphology. Three-dimensional right atrial (RA) activation mapping reveale...
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Introduction Inappropriate sinus tachycardia (IST) is a rare disorder defined as a nonparoxysmal rhythm originating from the sinus node associated with palpitations with a resting heart rate 4100 beats/min and a 24-hour mean heart rate 490 beats/min, with all other potential causes of sinus tachycardia excluded. Patients with IST may experience debilitating palpitations, lightheadedness, chest ...
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