[多项选择]男性，58岁，吸烟史30年，咳嗽咳痰20余年，活动后气短4年，偶有下肢水肿。近5天咳嗽、气短症状加重。查体：神志清，桶状胸，双肺呼吸音低，少量湿啰音，P2>A2，剑突下搏动增强，双下肢水肿。关于肺动脉高压下列描述正确的是（）。
A. 超声心动图拟诊标准为肺动脉收缩压≥50mmHg
B. COPD可引起低氧血症相关性肺动脉高压
C. 静脉肺动脉高压尤其具有潜在致命性
D. 左心系统疾病可引起静脉性肺动脉高压
E. 特发性肺动脉高压患者预后良好
F. 钙拮抗剂对大部分特发性肺动脉高压患者有效
G. 特发性肺动脉高压病理上表现为致丛性肺动脉病

My name is Sarah. My grandfather was called Charles, and my grandmother was called Ann. They lived in Manchester. My grandmother died last year, aged ninety-eight. They had three children, named David, John and Alice. They are, of course, my father, my uncle, and aunt. My father is called David, and he is the eldest of the three. My mother is called Mary. My father was an engineer. He’s retired now. My father’s brother, my uncle, as I said, is called John. He’s married to Heidi They have two children The oldest is called Simon, and the younger one is called Sally. My uncle John is in the army, serving in Germany. Simon is married to a girl called Diana. They have two children, Richard and Fiona. My aunt, Alice, married a man called Henry Jones. They moved to Australia when I was very young. I don’t remember them very well.
My husband’s name is Andy. We have two children, Ida aged two and Tom who is six months old. We’re working in China

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