{'fraction_non_alphanumeric': 0.01436265709156194, 'fraction_numerical': 0.0, 'mean_word_length': 5.0, '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}}
Atypical atrial flutter in a patient with atrial septal defect without previous surgery: the role of septal defect as a part of the arrhythmia substrate.

This case report describes an atypical right atrial septal flutter in a patient with a non-corrected atrial septal defect. The unique feature of this case report is that reentrant tachycardia with a cycle around the atrial septal defect was non-scar related. The slow conduction around this atrial septal defect was probably formed by right atrial dilatation and intra-cardiac haemodynamic alterations.