A client being evaluated in the emergency department complains of chest pain that radiates to his neck, shoulders, back, and arms, which decreases when he sits up and leans forward. Based on this assessment, the nurse suspects that he has
A．developed another myocardial infarction (MI).
B．endocarditis.
C．pericarditis.
D．myocarditis.
参考答案：C
解析：Pericarditis is an inflammation of the fibroserous sac that envelops the heart. Unlike the pain of an MI, pericardial pain is commonly pleuritie and eases when the heart is pulled away from the diaphragmatic pleurae of the lungs. The hallmark indication of endocarditis is intermittent fever and malaise resulting from infection of the endocardium. Myocarditis has nonspecific symptoms that reflect the accompanying systemic infection.