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The effect of surgery on the plasma levels of the individual essential amino acids

Authors
Journal
Surgery
0039-6060
Publisher
Elsevier
Publication Date
Disciplines
  • Medicine

Abstract

Abstract A study has been made of the effect of surgery on the plasma levels of the individual essential amino acids. Following surgery the plasma levels of the individual essential amino acids decreased below the preoperative plasma levels. The plasma levels of seven of the ten essential amino acids returned to the preoperative level by the first postoperative day. Lysine returned to the preoperative plasma level by the third postoperative day. Threonine and arginine did not return to the preoperative mean plasma levels until the seventh postoperative day. Similar decreases in the plasma levels of the individual essential amino acids occurred following ether anesthesia without operation. The decrease in plasma levels of the individual essential amino acids following surgery or anesthesia may possibly be due to the increased secretion of adrenalin which occurs during anesthesia or surgery. With the possible exception of arginine and threonine, decreases in plasma levels of the individual essential amino acids following surgery do not appear to be directly associated with the postoperative catabolic period.

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