Erythema migrans is an expanding rash seen in early Lyme disease. Caused by Borrelia bacteria after tick bite, not allergic reaction. Appears 1-32 days after tick bite, up to 70 cm in diameter
MAC is a complex of three Mycobacterium species found in soil and water. Infection occurs through inhalation or ingestion, usually via gastrointestinal tract. MAC bacteria can be found in shower heads, making inhalation possible
Adult dose: 15 mg/kg/day divided IV/IM every 8-12 hours. Urinary tract infection: 250 mg IV/IM every 12 hours. Hospital-acquired pneumonia: 20 mg/kg/day IV. Renal impairment: dose adjusted based on CrCl
Lung abscesses are pus collections within the lungs. Antibiotic availability has reduced incidence and mortality. Elderly, immunocompromised and malnourished patients are most susceptible. Most common in superior segment of right lower lobe
Multiple tests are used to detect H. pylori infection. Stool tests include antigen and PCR tests. Breath test measures carbon release from tagged carbon molecules. Upper endoscopy examines digestive tract with biopsy
Most common deep head and neck infection, affecting 30 cases per 100,000 annually. Occurs primarily in adults 20-40 years of age. Pus accumulates between tonsil capsule and superior pharyngeal constrictor muscle