Which of the following is the best definition of empirical evidence?
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a. evidence based on personal beliefs or preferences
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b. evidence gathered through direct observation
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c. a set of untested data used to support product claims
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d. evidence that supports a scientific hypothesis
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Define the apical impulse and describe its normal location, size, and duration. which abnormal conditions may affect the location of the apical impulse? explain the mechanism producing normal first and second heart sounds. describe the effect of respiration on the heart sounds. describe the characteristics of the first heart sound and its intensity at the apex of the heart and at the base. describe the characteristics of the second heart sound and its intensity at the apex of the heart and at the base.