Hyponatremia in Psychiatric Inpatients: A Native Pilot Study

Introduction: Hyponatremia is one of the most frequent ion and water disorders and severe hyponatremia is associated with well‐known clinical symptoms and manifestations. In the present assessment the incidence and clinical profile of hyponatremia have been probed among a great sample of non-western psychiatric inpatients and compared with the available data in literature regarding prevalence and other associated clinical characteristics. Methods: All inpatients with idiopathic hyponatremia during the last sixty-four months had been included in the present study. Clinical diagnosis, as well, was in essence based on ‘Diagnostic and Statistical Manual of Mental Disorders, 5th edition (DSM‐5)’. Statistical significance had been defined as a p value ≤0.05. Results: While the annual incidence of hyponatremia in current evaluation was around 0.01%, the annual incidence of mortality due to hyponatremia was around 0.001%. It was significantly more prevalent among male psychiatric inpatients (p<0.04) and patients with duration of illness in excess of one year (p<0.04). Furthermore, it was meaningfully more evident among schizophrenic patients (p<0.007), in comparison with remaining primary psychiatric disorders. There was no significant relationship between hyponatremia and symptomatic profile, or serum level of sodium and occurrence of seizure. Conclusion: Hyponatremia was significantly more prevalent among male patients and cases with duration of illness in excess of one year. Furthermore, it was meaningfully more evident among schizophrenic patients.