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Assessing Urinary Tract Junction Obstruction Defects by Methylene Blue Dye Injection
Published on: October 12, 2017
Intraoperative Change in Urine Color: Be Cautious for a Clinical Entity!
1is a senior resident in the Department of Onco-anaesthesia and Palliative Medicine, Dr BRAIRCH, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India.
Abstract:
A change in urine color is an unusual intraoperative occurrence, which can be distressing for the anesthesia provider. Abnormal changes in color are generally benign effects of medications and foods; however, a change in urine color may be a sign of an underlying pathologic condition. Methylene blue, a nonpathogenic, water-soluble, commonly used dye for diagnostic tests, has on rare occasions, been reported to discolor urine green intraoperatively or postoperatively. We report on a patient who produced green discoloration of urine intraoperatively after methylene blue administration, which was benign and resolved spontaneously.
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