Recent approaches to His-Purkinje system pacing
نویسندگان
چکیده
منابع مشابه
Permanent, direct His-bundle pacing: a novel approach to cardiac pacing in patients with normal His-Purkinje activation.
BACKGROUND Direct His-bundle pacing (DHBP) produces synchronous ventricular depolarization and improved cardiac function relative to apical pacing. Although it has been performed transiently in the electrophysiology laboratory and persistently in open-chested canines, permanent DHBP in humans has not been achieved. METHODS AND RESULTS A total of 18 patients aged 69+/-10 years who had a histor...
متن کاملDetermination of His-Purkinje refractoriness in man with His bundle pacing.
Consistent His bundle pacing was accomplished in one of 60 consecutive patients. Intracardiac electrophysiologic studies in this patient revealed rapid atrioventricular nodal conduction (AH = 55 msec). While the relative refractory period of the His-Purkinje system as a whole determined by His bundle pacing (using the extrastimulus technique) was identical to that determined by atrial pacing, c...
متن کاملA Novel Approach to Cardiac Pacing in Patients With Normal His-Purkinje Activation
Background—Direct His-bundle pacing (DHBP) produces synchronous ventricular depolarization and improved cardiac function relative to apical pacing. Although it has been performed transiently in the electrophysiology laboratory and persistently in open-chested canines, permanent DHBP in humans has not been achieved. Methods and Results—A total of 18 patients aged 69610 years who had a history of...
متن کاملHis-Purkinje conduction during retrograde stress.
The pattern of retrograde His-Purkinje conduction was evaluated in 28 patients using ventricular extrastimuli. In each patient progressive prolongations of His-Purkinje conduction (S2H2) which appeared as ventricular extrastimuli were induced at closer coupling intervals (S1S2). There was an inverse linear relationship of S2H2 to S1S2 which was cycle length-dependent: i.e., at any S1S2 interval...
متن کاملPacing-induced automaticity in sheep Purkinje fibers.
The induction and decay of pacing-induced automaticity were studied in 15 sheep Purkinje fiber preparations superfused with modified Tyrode's solution containing norepinephrine, 2.5 x 10(-7) M. All preparations were quiescent prior to pacing. Spontaneous automaticity could be induced in each preparation provided a sufficient number of pacing stimuli were applied at a fast enough rate. Once the ...
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ژورنال
عنوان ژورنال: Chinese Medical Journal
سال: 2019
ISSN: 0366-6999
DOI: 10.1097/cm9.0000000000000038