A palpable tender abdominal mass in a patient with endocarditis on antibiotics for 5 weeks

Mycotic aneurysms are a rare finding in the post-antibiotic era but must still be considered as a cause of abdominal pain in a patient with endocarditis. We present a case of a 47-year-old man with a history of IV drug use and a prior episode of endocarditis who developed a mycotic aneurysm while hospitalized on IV antibiotic therapy for aortic valve endocarditis. Due to their life-threatening character and often lack of evident clinical picture, mycotic aneurysms should still remain in high suspicion for a patient with abdominal pain in the setting of endocarditis.

动脉血气分析的ABC：酸碱失衡的判断指南

目的本文目的是为临床药师、药学研究者及学生提供有用的评价动脉血气分析（arterial bloodgas analysis，ABGs）的方法。概论酸碱平衡的病理生理可分为代谢性或呼吸性酸中毒和碱中毒，以及那些可以被代偿的酸碱失衡。文章为读者提供了评估ABG的途径与步骤，还提供了实际病例，以便读者掌握酸碱失衡的概念。通过阅读本文，读者将能掌握必要的方法，来评估临床实践中遇到的任何酸碱失衡。结论酸碱病平衡的病理生理学复杂，对新接触临床的医师来说，不可能像经验丰富的老医师那样容易理解，本文介绍的方法能帮助和训练各个层次的临床医师，使其在实践中能评估和制定治疗酸碱失衡的方法。