Anaesthetic management of a dog with Tetralogy of Fallot undergoing placement of a modified Blalock‐Taussig shunt

A 6-month-old male Old English Bulldog with Tetralogy of Fallot (ToF) required general anaesthesia for surgical palliative treatment ToF whereby a shunt was placed between the left subclavian artery and pulmonary trunk to increase circulation (modified Blalock-Taussig shunt). Anaesthesia patient presents an anaesthetic challenge given four concurrent cardiac defects as well manoeuvres involved, requiring advanced understanding underlying pathophysiology haemodynamics. Besides this, thorough knowledge clinical effects events drugs is required. This case report describes two major that occurred unexplained hyperkalaemia developed. Furthermore their management explained discussed.