单选题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.

单选题The immobile adolescent with a recent fractured femur suddenly complains chest pain, dyspnea, diaphoresis, and tachycardia. Which of the following would the nurse suspect? A. Atelectasis. B. Pneumonia. C. Pulmonary edema. D. Pulmonary emboli.