Takotsubo syndrome induced by severe hyponatraemia in mineralocorticoid-responsive hyponatraemia of the elderly: a case report.

ABSTRACT:

Background

There are limited reports on mineralocorticoid-responsive hyponatraemia of the elderly (MRHE), a condition that can cause severe hyponatraemia.

Case summary

An 85-year-old woman presented with transient loss of consciousness and nausea likely due to untreated severe hyponatraemia (114 mEq/L). Thirty-nine hours after initial admission, she developed sudden cardiac dysfunction and entered a circulatory collapse state. The patient was diagnosed with Takotsubo syndrome. Her hyponatraemia was an essential feature of syndrome of inappropriate antidiuretic hormone secretion. However, she was clinically hypovolaemic. Therefore, the hyponatraemia was diagnosed as MRHE. The serum sodium level was corrected with 3% hypertonic saline administered at a rate of 10 mL per hour,

SUBMITTER: Asano F 

PROVIDER: S-EPMC11443963 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature