PT - JOURNAL ARTICLE AU - Garrett Michael Snipes AU - Adam Hafeez AU - George Marek AU - David E Winchester TI - Sinus bradycardia with haemodynamic compromise following lithium intoxication AID - 10.1136/bcr-2021-242946 DP - 2021 May 01 TA - BMJ Case Reports PG - e242946 VI - 14 IP - 5 4099 - http://casereports.bmj.com/content/14/5/e242946.short 4100 - http://casereports.bmj.com/content/14/5/e242946.full SO - BMJ Case Reports2021 May 01; 14 AB - Lithium is a well-established treatment for mood disorders and considered first-line pharmacological therapy for bipolar disorder as per the American Psychiatric Association guidelines. However, lithium is associated with significant toxicity. Cardiotoxicity including sinus node dysfunction is a rare but clinically significant presentation of lithium intoxication. This case report describes an adult male presenting with unstable sinus bradycardia in the setting of acute kidney injury and elevated serum lithium levels. The patient required temporary management with inotropic support and transcutaneous pacing. The patient’s heart rate and hypotension improved in parallel with resolution of his acute kidney injury and elevated serum lithium level after treatment with intravenous fluids. Given the prevalence of bradycardia in both the outpatient and inpatient settings, a high index of suspicion is necessary for the prevention and identification of this clinical entity to guide appropriate management.