Effect of epidural morphine on urinary catecholamine excretion during postoperative period

SEIICHI YASUDA, YOSHIO TAKINO, JUNICHI TAKAHASHI
1985 The Keio Journal of Medicine  
The effects of epidural morphine on the postoperative urinary excretion of catecholamines were studied in patients who underwent upper abdominal sur gery. Either preservative-free morphine, 2 mg in 20 ml of saline (morphine group) or 20 ml of normal saline (saline group) was injected epidurally through a catheter placed in the space between Th 7-8 during surgery. Urine samples were collected just after induction and 5 hours postoperatively. Catecholamines were analyzed with high-performance
more » ... id chromatography and expressed as ng/mg urinary creatinine (Cr).
doi:10.2302/kjm.34.25 fatcat:ecjaywzpv5aglgmbtaj4j24nia