男性患者，68岁，突起剧烈压榨样胸痛、呕吐伴窒息感2小时入院。查心率110次/分，血压85/60mmHg，心电图示V1-V4导联ST段呈弓背向上抬高，律不齐。
本病例最可能的诊断为（）。
A．肺梗塞
B．高血压危象
C．急性心肌梗死
D．心脏神经功能症
E．高血压脑病
参考答案：C
解析：
此题考查急性心梗的诊断，心梗疼痛的性质、部位与心绞痛一致，不同之处在于心梗疼痛时间长，程度更加剧烈，硝酸甘油不能缓解疼痛。心电图表现为ST段的弓背上抬，依次该病人可能诊断为心肌梗死。
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