PREMATURE ATRIAL CONTRACTIONS
\pɹɪmət͡ʃˈʊ͡əɹ ˈatɹɪəl kəntɹˈakʃənz], \pɹɪmətʃˈʊəɹ ˈatɹɪəl kəntɹˈakʃənz], \p_ɹ_ɪ_m_ə_tʃ_ˈʊə_ɹ ˈa_t_ɹ_ɪ__ə_l k_ə_n_t_ɹ_ˈa_k_ʃ_ə_n_z]\
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Premature contractions of the heart arising from an ectopic atrial focus. With ventricular premature complexes, they represent one of the most common causes of irregular pulse. They are more apt to occur if there is atrial or conduction system disease such as left atrial enlargement in mitral stenosis. In community prospective studies, atrial premature complexes are not related to sudden death, as are ventricular premature beats in coronary disease. (From Stedman, 25th ed; Braunwald, Heart Disease, 4th ed, p679; Sokolow, et al., Clinical Cardiology, 5th ed, p472)
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basidiomycota
- comprises fungi bearing the spores on basidium: Gasteromycetes (puffballs); Tiliomycetes (comprising orders Ustilaginales (smuts) and Uredinales (rusts)); Hymenomycetes (mushrooms; toadstools; agarics; bracket fungi); in some classification systems considered a division of kingdom comprises fungi bearing spores on a basidium; includes Gasteromycetes (puffballs) Tiliomycetes comprising the orders Ustilaginales (smuts) and Uredinales (rusts) Hymenomycetes (mushrooms, toadstools, agarics bracket fungi).