一女性患者，既往有胃病二十余年。每欠均因饮食不慎，出现呕吐，时作时止，面色白，倦怠乏力，口干不欲饮，四肢不温，大便溏薄，舌质淡，脉濡弱。如此次饮食过多，出现呕吐酸腐，脘腹胀满，嗳气厌食，治疗应改用何方（）

A.木香顺气散

B.柴胡疏肝散

C.保和丸

D.理中丸

E.麦门冬汤

Following coronary artery bypass grafting, a client begins having chest "fullness" and anxiety. The nurse suspects cardiac tamponade and prints a lead Ⅱ electrocardiograph (ECG) strip for interpretation. In looking at the strip, the change in the QRS complex that would most support her suspicion is（）

A. narrowing complex.

B. widening complex.

C. amplitude increase.

D. amplitude decrease.