患者,男,65岁。有慢性咳嗽史,查体有肺气肿体征。出现下列哪项改变提示合并早期肺心病
A 发绀、头痛、嗜睡、神志恍惚 B
皮肤潮红、多汗 C
剑突下心脏收缩期搏动、心音增强 D
血气分析PaO<img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20240806/12862160_0.gif">↓,PaCO<img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20240806/12862160_0_1.gif">↑ E
心电图示低电压和右束支传导阻滞