{'fraction_non_alphanumeric': 0.011470281543274244, 'fraction_numerical': 0.004171011470281543, 'mean_word_length': 5.956521739130435, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
[Therapy of paroxysmal supraventricular tachycardias by rapid patient-activated atrial stimulation].

Recurrent, drug refractory supraventricular tachycardia may present a therapeutic challenge. Following invasive electrophysiological study and the prospectively controlled therapeutic failure of all available drugs 3 patients were treated by permanent implantation of a system for atrial burst stimulation. The system consists of an implanted receiver with electrodes connected to the right atrium and a radiofrequency stimulator that requires patient activation for burst pacing. During a follow-up period of 6 to 39 months numerous attacks of recurrent tachycardia were successfully terminated without complication. The therapeutic approach which has allowed stoppage of all antiarrhythmic drugs and has obviated the need for frequent hospital admissions has met with patient approval and is highly regarded as providing an improvement in quality of life.