Explain the murmur from a mechanistic view of the hearts


Question:

A new patient is brought into the office for their annual evaluation. The child is a 6-year-old and appears a bit small for their age but not so small that any alarm bells are set off. The vitals are: P = 116, R = 22, T = 98.6 F, BP = 110/50. (The normal vitals in a 6-year-old are P = 75 - 120, R = 16 - 22, T = 98.6 , BP = (85-115)/(48-64). Examination of the lungs is normal, HEENT is normal, as is the abdominal exam. The heart however, seems laterally displaced and there appears to be only a continuous murmur which can be described as crescendo/decrescendo systolic murmur that extends into diastole.

Because, you were trained at Chamberlain College of Nursing you immediately know that this is probably a patent ductus arteriosus.

Explain the murmur from a mechanistic view of the hearts physiological functioning?

What is the epidemiology of a patent ductus arteriosus?

How is a patent ductus arteriosus treated?

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