ECE2023 Eposter Presentations Pituitary and Neuroendocrinology (234 abstracts)
Reset Osmostat Syndrome: When Hyponatremia Become «A Normal». Diagnostics, Case Report
Ludmila Astafyeva , Inna Badmaeva , Irina Klochkova , Oleg Sharipov , Yuliya Sidneva , Olga Gadjieva , Boris Bashiryan , Pavel Kalinin , Andrei Lubnin & Aleksandr Konovalov
Burdenko Neurosurgery Center, Moskva, Russia
Reset osmostat syndrome (ROS) is characterized by a change of normal plasma osmolality level (decrease or increase), which leads to chronic dysnatremia (hypo- or hypernatremia). We have described a Clinical case of ROS and chronic hyponatremia in a patient with chordoid glioma of the III ventricle. It is known that the patient had previously been diagnosed with hyponatremia (131-134 mmol/l). She has not hypothyroidism and hypocorticism. There is normal filtration function of the kidneys was (CKD-EPI 91.7 ml/mi/1,73m2). Urine osmolality and sodium level were studied to exclude of concentration kidney function disorder. During first three days after removal of the tumor of the third ventricle (chordoid glioma, WHO Grade II), the sodium level decreased to 119 mmol/l. Repeated infusions of 200-300 ml hypertonic 3% sodium chloride solution, gluco- and mineralocorticoid therapy was ineffective, increasing plasma sodium levels by 2-3 mmol/l with the return to the initial level during 6-8 hours. Hypopituitary disorders did not develop after surgery. With further observation, the sodium level remained within 126-129 mmol/l for 6 months after surgery. The water load test make exclude the classic syndrome of inappropriate secretion of antidiuretic hormone, and confirmed the diagnosis of RSO. Because of absence of clinical symptoms associated with hyponatremia, no medical correction was required, patient was recommended to clinical follow-up.
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Endocrine Abstracts
ISSN 1470-3947 (print) | ISSN 1479-6848 (online)
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