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
QT prolongation is seen in all except 
Select and explain. 
A. Hypothermia, B. Digitalis toxicity, C. Hypocalcaemia, D. Romanowand syndrome
B: Digitalis toxicity
Answer: B: Digitalis toxicity 
Explanation: 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