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Snapshot A 61-year-old man presents to the emergency department for vague abdominal and back pain.

Snapshot A 30-year-old man presents with increased frequency in urination and persistent thirst despite

Overview Normal intracardiac pressures (see chart above)  Pulmonary wedge pressure (PWP) an approximation of left

Overview SA Node Action Potential; also AV Node  Phase 0, upstroke   action potential opens L-type voltage-gated Ca2+ channels

Introduction Microcirculation capillaries, the smallest blood vessels, are the site of exchange of nutrients, waste products,

Snapshot A 64-year-old man with chronic obstructive pulmonary disease presents with palpitations and lightheadedness.

Overview Snapshot A 46-year-old woman presents for the evaluation of “visible” veins in both

Snapshot A 52-year-old man was eating dinner with his family before unexpectedly collapsing. He

Snapshot A 60-year-old woman presents to her physician’s office for a painful cord-like rash

Snapshot A 40-year-old man is training for a marathon. During a particularly steep hill,

Snapshot Introduction Imaging