{'fraction_non_alphanumeric': 0.028199566160520606, 'fraction_numerical': 0.010845986984815618, '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}}
"Knotting" of a Pigtail Catheter, and Its Successful Removal

In 1970, Young and Maurerl first reported a case of intra-vascular catheter knotting which was non-surgically removed. More recently a further incident of knotting, this time of a subclavian central venous pressure catheter was reported by Nicholas .2 The present paper presents a case where a pigtail catheter* became knotted or looped upon itself. Its non-surgical successful removal is described.