What is Diabetes Insipidus?
Diabetes insipidus (DI) is a condition characterized by the production of large volumes of very dilute urine. It occurs due to a disruption in the secretion of antidiuretic hormone (ADH), which is responsible for helping the kidneys conserve water. This condition is distinct from diabetes mellitus and is unrelated to blood glucose levels.
Causes of DI After Pituitary Surgery
During pituitary surgery, the gland is manipulated, which can temporarily disrupt the secretion of ADH. This is a known risk associated with the procedure. The surgery is typically performed using an endoscopic transnasal approach, meaning it is done through the nose without cutting the skull. Dr. Kalyan Bommakanti, in collaboration with ENT surgeon Dr. Vyshnavi Bommakanti, specializes in this minimally invasive technique.
Incidence and Duration
Transient diabetes insipidus occurs in approximately 10 to 20% of patients undergoing pituitary surgery. Fortunately, in most cases, this condition resolves within days to weeks. Permanent DI, where the condition does not resolve, is rare, occurring in less than 2 to 3% of cases.
Monitoring and Management
At Apollo Hospitals in Hyderabad, Dr. Kalyan Bommakanti ensures that all patients are closely monitored for signs of DI in the first 48 hours following pituitary surgery. The nursing team is trained to measure urine output and blood sodium levels hourly. If DI is confirmed, desmopressin, a medication that replaces the missing ADH, is administered either as a tablet or nasal spray. This treatment typically normalizes urine output within hours, allowing the patient to recover smoothly.
Post-Surgery Care
In addition to monitoring for DI, all patients receive cortisol coverage after surgery, regardless of their pre-operative hormone levels. This is a standard precaution to manage surgical stress and support recovery.
Read more: the full Pituitary Adenoma patient guide & video library — videos on symptoms, surgery and recovery.
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