hyponatremia (low sodium level 114mmol/L) resulting in seizure, with aspiration of vomit as terminal event
AI-generated summary
A 62-year-old woman with chronic schizophrenia died from hyponatremia (sodium level 114mmol/L) resulting in seizure and aspiration during involuntary psychiatric admission. She had been on escitalopram (SSRI) for depression and was admitted after refusing depot antipsychotic medication. Critical clinical lessons: (1) SSRIs can cause hyponatremia, particularly in older women and those with comorbidities; (2) excessive water drinking and vomiting are red flags for both psychosis and hyponatremia; (3) baseline bloods on psychiatric admission, even when patient cooperation is poor, are important; (4) symptoms attributed to psychiatric illness may actually indicate metabolic derangement. The coroner found no fault with care but recommended elevated awareness of SSRI-related hyponatremia monitoring, especially in vulnerable populations. Clinicians should maintain low threshold for checking electrolytes when patients present with confusion, irritability, nausea or excessive fluid intake.
AI-generated summary and tagging — may contain inaccuracies; refer to original finding for legal purposes.
excessive water drinking associated with psychosis
vomiting causing electrolyte loss
non-compliance with antipsychotic depot medication
acute exacerbation of schizophrenia
lack of baseline electrolyte testing on psychiatric admission
symptoms of hyponatremia misattributed to psychiatric illness
Coroner's recommendations
For patients treated with SSRI medication, especially those outlined in literature as being more susceptible to hyponatremia (female, more elderly, and with comorbidities affecting kidney function), there should be an elevated awareness of the need to monitor for hyponatremia
Consider regular checks of electrolyte levels in all patients taking SSRI medication
Blood tests should be taken as routine for all new admissions to psychiatric units, particularly given this case of death related to hyponatremia and SSRI medication
When patients present with symptoms of confusion, irritability, nausea or excessive fluid intake, consider hyponatremia as a differential diagnosis rather than attributing solely to psychiatric illness
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