Broad Coverage. There are published guidelines. Most recommend a 3rd generation cephalosporin with a macrolide or a flouroquinolone if there is an allergy. This covers the usual bacteria that cause respiratory infections, because in most cases the exact bacteria will not be identified. This and other diseases, medications and other factors are used by the physician to tailor the treatment.
Antibiotics. If your pneumonia is bacteria, IV antibiotics are usualy prescribed. Whihc one(s) depends on the bacteria they get from your lungs. You may also receive cortisone (if necessary) for your asthma. Your inhalers may be switched to nebulizer solttions. Your diabetes will be monitored and controlled according to the hospital's protocols on this.
Depends. It depends on if you've been exposed to healthcare before. Standard therapy for community acquired pneumonia is Ceftriaxone and azithromycin, or Moxifloxacin alone. If you've been exposed to healthcare in the last 3 months or so (or several other risk factors associated with healthcare), the coverage broadens to include pseudomonas and mrsa.