ModerateEndocrinologySyndrome of inappropriate antidiuretic hormone secretionuk-plab-1
A 76-year-old woman in a care home has become progressively more drowsy over the past day. She has heart failure and chronic kidney disease. Blood tests show sodium 117 mmol/L. She is euvolaemic on examination and takes Sertraline and a thiazide diuretic. What is the most likely cause of her hyponatraemia?