{'fraction_non_alphanumeric': 0.03215926493108729, 'fraction_numerical': 0.019908116385911178, 'mean_word_length': 5.475247524752476, 'pattern_counts': {'":': 0, '<': 1, '<?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}}
Role of uterine contraction in producing hemorrhages in rat fetuses after amniocentesis.

The uterine-muscle relaxant isoxsuprine hydrochloride was administered to pregnant Wistar rats 30 min before amniotic-sac puncture on day 15 of gestation. The frequency of hemorrhages in fetuses, especially in the interdigital area of footplates, was examined 1–2 h after puncture. The frequency of hemorrhages (31%) was significantly lower (P <.001) than in fetuses not exposed to the muscle relaxant (59%), probably indicating a positive role of uterine muscular contraction in inducing hemorrhages, which were previously reported to lead to limb malformations.