Green urine after general anesthesia with propofol: different responses in the same patient: A case report

Green discoloration of the urine after propofol administration is a rare clinical phenomenon. Although the exact incidence of propofol-induced green urine is not known, the reported incidence is thought to be less than 1%. In most reported cases of propofol-induced green urine, the clinical effects were benign and reversible. However, many clinicians are unfamiliar with this rare side effect of propofol. Here, we present the case of a patient who showed green urine following two-staged repair of a thoracoabdominal aortic aneurysm with propofol infusion. His urine had a normal yellowish color after the first operation, but appeared green immediately after the second surgery. Because propofol is a commonly used sedative agent, knowing that green urine can be attributed to propofol administration and that its clinical effect is mostly benign will help clinicians with patient management, as such knowledge will also reduce unnecessary concerns and laboratory tests.

Green urine in a patient who received a continuous infusion of propofol: A case report / 대한마취과학회지

The color of urine in patients who receive anesthetic gives much medical information to a medical team. So, we must check the urine color and know the cause of discoloration of the urine from anesthetic patients. Green urine is rare indeed and it is a benign potential side effect of propofol; this phenomenon is related to the metabolism of propofol. We experienced green urine from a long-term anesthetized patient who received a continuous infusion of propofol. We report here on this unusual case and we review the relevant literature.

A Case of Green Urine after Ingestion of Herbicides

The development of discolored urine may have many possible causes. Here we present the case of a 76-year-old woman who was admitted after ingesting the inorganic herbicides, mefenacet and imazosulfuron. Her urine color changed to green almost immediately. Since the patient had no specific medication or medical history we considered that the most likely cause of the change in urine color was the ingestion of the herbicides. Spectrophotometric analysis of the urine was conducted and a peak was observed in the green area of the wavelength spectrum. These findings show that mefenacet and imazosulfuron should be considered in the differential diagnosis of green discolored urine.