<prompt> Which one of the following electrocardiographic changes is found in hypercalcaemia -PropongedQ-T intervalSho Q-T intervalIncreased QRS intervalSho P-R interval  <response>: ECG Changes in Hypercalcaemia The main ECG abnormality seen with hypercalcaemia is shoening of QT interval In severe hypercalcaemia, Osborn waves J waves may be seen Ventricular irritability and VF arrest has been repoed with extreme hypercalcaemia Bizarre-looking QRS complexes Very sho QT interval J waves notching of the terminal QRS, best seen in lead V1 Ref Harrison 20th edition pg 1435 