Introduction. Sheehan syndrome (ShS) is (pan)hypopituitarism because of
postpartum pituitary infarction due to massive obstetrical hemorrhage.
Enlargement of the pituitary gland, smaller sellar region, disseminated
intravascular coagulation (DIC) or autoimmunity are predisposing factors.
The absence of lactation after labor and inability to resume the menstrual
cycle later are presenting symptoms. Some of patients with Sheehan's
syndrome have a sudden onset of severe hypopituitarism immediately after
labor, most often in the form of severe hyponatremia. Central adrenal
insufficiency is the most usual cause of hyponatremia, although in some
cases the syndrome of inappropriate antidiuretic hormone secretion has been
also described. Case outline. The female patient, 39-year-old, was admitted
to the Intensive Care Unit due to severe hyponatremia with neurological
symptoms (Na 103 mmol/L, Cl 72 mmol/L, K 3.7 mmol/L), and absence of
lactation. Previously, on the sixth postpartum day, she was admitted to the
Obstetrics and Gynecology Clinic due to severe headache, nausea, vomiting,
and blurred vision. The symptoms persist from the labor, which was
complicated with severe hemorrhage (1000 ml) due to obstetric complications.
Treatment began with the 3% hypertonic saline solution with restriction of
fluid intake. In regard to panhypopituitarism, replacement therapy with
hydrocortisone and levothyroxine was initiated. Diabetes insipidus was
excluded. Growth hormone replacement therapy and combination of progesterone
and progestogens was started during follow-up. Conclusion. Early diagnosis
of Sheehan's syndrome is essential. Pituitary insufficiency in these
patients has a great diversity in presentation, that can sometimes result in
coma and death.