A&P Clinical Questions and Correct
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Dr. Baker spends a long time listening to (auscultating) Caleb's heart.
Where on the thoracic surface do you auscultate to the tricuspid,
mitral (bicuspid), pulmonary, and aortic valves?
Ans: Remember that tricuspid is the fourth intercostal space on the lower
left sternal border; mitral (bicuspid) is the fifth intercostal space medial to
left midclavicular line; pulmonary is the second intercostal space on the
left upper sternal border; and aortic is the second intercostal space on
the right upper sternal border.
Dr. Baker spends a long time listening to (auscultating) Caleb's heart.
Where do you think would be the best place to auscultate Caleb's
abnormal heart sound? Explain your answer.
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Ans: Caleb's defect lies in the interventricular septum between the
atrioventricular valves. So, the best place to hear it would be from the
lower left sternal border to the right lower sternal border because this is
the area that overlies the defect.
Caleb has abnormal heart sounds that tipped the doctor off to a
problem.
Name the normal sounds of the heart and indicate what causes
these sounds.
Ans: S1 is the first heart sound or "lub" and occurs due to closure of the
atrioventricular (tricuspid and bicuspid) valves. S2 is the second heart
sound or "dup" and occurs due to closure of the pulmonary and aortic
(semilunar) valves.
Caleb has abnormal heart sounds that tipped the doctor off to a
problem.