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While due attention has been given to the difference existing between the pulmonic and systemic circulations, as a result of pulmonary consolidation, there seems to be a scarcity of comment regarding a comparative lessening of intra-aortic blood pressure.
By experiment and observation I have found in healthy individuals what appeared to be an accentuated pulmonic second sound which would disappear on having the patient walk briskly for a few minutes.
The point I wish to make is that healthy people who are inactive, engaged in sedentary occupations, have an apparent accentuated pulmonic second when in reality it is only a relative one, due to lessened intra-aortic pressure, the result of deficient exercise. Use is made of exercise to bring out signs of disease of the valve segments, but I have seen no literature bearing on this subject. What theory one may have, the fact remains, or at least is constant
HARDY I. THE PULMONIC SECOND SOUND, IN HEALTH AND DISEASE. JAMA. 1906;XLVI(15):1111. doi:10.1001/jama.1906.62510420041005a
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