This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'QT prolongation is seen in all except \nSelect and explain. \nA. Hypothermia, B. Digitalis toxicity, C. Hypocalcaemia, D. Romanowand syndrome', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Hypocalcemia typically prolongs the QT interval (ST poion), whereas hypercalcemia shoens it . Digitalis glycosides also shoen the QT interval, often with a characteristic "scooping" of the ST-T-wave c (digitalis effect). Ref Harrison 20th edition pg 1534', 'role': 'assistant'}]