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以下哪项不是胸痹疼痛的特点
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某男，63岁，2小时前活动中出现心胸疼痛，胸部闷窒，伴心悸、喘促、汗出，经含化复方丹参滴丸等药治疗无效。现病人仍心前区疼痛、胸中闷窒、动则加重，心中恐惧，出汗，舌体胖大，舌质暗淡，苔白，脉细无力。 首选方剂为
Native Americans probably arrived from Asia in successive waves over several millennia, crossing a plain hundreds of miles wide that now lies inundated by 160 feet of water released by melting glaciers. For several periods of time, the first beginning around 60, 000 B.C. and the last ending around 7, 000 B.C., this land bridge was open. The first people traveled in the dusty trails of the animals they hunted. They brought with them not only their families, weapons, and tools but also a broad metaphysical understanding, sprung from dreams and visions and articulated in myth and song, which complemented their scientific and historical knowledge of the lives of animals and of people. All this they shaped in a variety of languages, bringing into being oral literatures of power and beauty. Contemporary readers, forgetting the origins of western epic, lyric, and dramatic forms, are easily disposed to think of "literature" only as something written. But on reflection it becomes clear that the more critically useful as well as the more frequently employed sense of the term concerns the artfulness of the verbal creation, not its mode of presentation. Ultimately, literature is aesthetically valued, regardless of language, culture, or mode of presentation, because some significant verbal achievement results from the struggle in words between tradition and talent. Verbal art has the ability to shape out a compelling inner vision in some skillfully crafted public verbal form. Of course, the differences between the written and oral modes of expression are not without consequences for an understanding of Native American literature. The essential difference is that a speech event is an evolving communication, an "emergent form", the shape, functions and aesthetic values of which become more clearly realized over the course of the performance. In performing verbal art, the performer assumes responsibility for the manner as well as the content of the performance, while the audience assumes the responsibility for evaluating the performer"s competence in both areas. It is this intense mutual engagement that elicits the display of skill and shapes the emerging performance. Where written literature provides us with a tradition of texts, oral literature offers a tradition of performances. What can be inferred about the nature of the Native American literature discussed in the passage
患者，男，51岁，有心脏病史8年，此次因劳累受凉后发作。症见喘促日久，呼多吸少，动则更甚，形寒神疲，渐至喘促持续不解，抬肩撷肚，面赤躁扰，汗出如珠，脉浮大无根。查体：双肺可闻及干、湿哕音，心率130次/分，心尖区可闻及舒张期奔马律，中医诊为“心衰”，除西药治疗外，治疗应首选
男性，59岁，上腹隐痛，体重减轻4个月，排黑便3次。无阳性体征 最不可能的诊断是（ ）
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