慢性肺心病患者失代偿期发生代谢性碱中毒最常见的原因是
A．呼吸性酸中毒时，尿钾排出增多
B．液体摄入量不足
C．肾上腺皮质激素过多
D．大量葡萄糖输入
E．大量应用排钾性利尿药
参考答案：E
解析：[解题思路] 慢性肺心病患者失代偿期常需给予排钾性利尿药来缓解右心功能不全的症状，以致排钾排氯过多引起低钾低氯性碱中毒，pH偏高，BE为正值，发生代谢性碱中毒。
[命题规律] 考察“慢性肺心病患者出现代谢性碱中毒的常见原因”。重点掌握。
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| Look! __1__ is a picture of my sister. __2__ is a middle school student. My sister __3__ to school early. Her school is not far from our home. It takes only fifteen minutes to go to school by bike. She __4__ four classes __5__ the morning. She has a Chinese class every day. She has English classes only __6__ Wednesday and Friday. She likes __7__ English very much. She likes singing and dancing, __8__ . She __9__ hard and now she __10__ a new book. | |||
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