某患者,患有慢性阻塞性肺气肿,当其出现下列哪项改变时,提示合并有早期肺源性心脏病
A 气短喘息加重,脓痰量增多 B
肺部湿啰音 C
剑突下心脏冲动,心音增强 D
血气分析PaO<img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20240405/13364004_0.gif">↓,PaCO<img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20240405/13364004_0_1.gif">↑ E
心电图示低电压与右束支传导阻滞