People over the age 55 years and those with alarm features are usually investigated by esophagogastroduodenoscopy (EGD). People under the age of 55 years with  no alarm features do not need EGD but are considered for investigation for peptic ulcer disease caused by Helicobacter pylori infection.
Indigestion other diagnostic studies
Epistaxis other diagnostic studies
Boil physical examination
Mumps other diagnostic studies
Guidewire general techniques
Cough other diagnostic studies
Mechanical ventilation choosing amongst ventilator modes
Confusion other diagnostic studies