This online Clinics series provides evidence-based answers to clinical questions the practicing hospitalist faces daily. This issue, edited by Dr. Allen Repp, includes the following articles: Pericarditis; Bedside ultrasound evaluation of shock; Cardiac implantable device infections; Hypernatremia; Ischemic colitis; Guillain-Barre syndrome; Interpretation of thyroid function tests in the hospitalized patient; Terminal extubation; Parotitis; Preventing catheter-associated urinary tract infections; Hepatitis C in Hospital Medicine; and Literature Update in Hospital Medicine.