An electrocardiogram (ECG) is a graphic recording of electrical activity during the cardiac cycle. Electrical activity recorded by the electrocardiogram (ECG) tracing that denotes the spread of the stimulus through the ventricle is the:
Read DetailsA patient’s health history is a key factor in timely and accurate diagnosis of acute illness and leads to improved outcomes. The health history if vital to guiding the physical exam and to interpret physical exam findings. What is a health history?
Read DetailsThe middle ear mucosa produces a small amount of mucus that is rapidly cleared by ciliary action of the _______. This structure is cartilaginous, fibrous, and a bony passageway between the nasopharynx and the middle ear. Muscles briefly open this passage during swallowing, yawning, or sneezing to clear the middle ear secretions and to equalize the middle ear pressure with atmospheric pressure. What is the name of this structure?
Read DetailsA positive Babinski reflex in an adult can indicate an upper motor neuron lesion and/or be a sign of an underlying central nervous system (spinal cord) or brain disease that is causing your reflexes to react abnormally. A positive Babinski reflex is noted when:
Read DetailsArterial embolic disease is characterized by emboli that are dispersed throughout the arterial system. This can be caused by atherosclerotic plaque, infectious material from fungal or bacterial endocarditis. The most common symptom of arterial embolic disease is:
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