The differential should include other causes of hemolysis, such as that found in non-immune hemolytic anemia including intrinsic red cell defects, hemolysis due to extrinsic factors (ie trugs or toxins) as well as mechanical damage hemolytic anemia as found in DIC and HUS.
The best initial antibiotic choice is thought to be a macrolide. Macrolides provide the best coverage for the most likely organisms in community-acquired bacterial pneumonia (CAP). Macrolides have effective coverage for gram-positive, Legionella, and Mycoplasma organisms. Azithromycin administered intravenously is an alternative to intravenous erythromycin.
Bacterial pneumonia. Doctors use antibiotics to treat pneumonia caused by bacteria, the most common cause of the condition. Antibiotics have a high cure rate for pneumonia. 5. Your doctor will choose your antibiotic based on a number of things, including your age, your symptoms and how severe they are, and whether you need to go to the hospital.