Cardiology>>>>>Electrocardiographic Interpretation
Question 3#

The ECG changes in the figure below:

are seen in:

a. Hypercalcemia
b. Hypocalcemia
c. Atrial septal defect, secundum
d. Atrial septal defect, primum
e. 5. Dextrocardial, mirror image

Correct Answer is B


This electrocardiogram shows a sinus rhythm. There is prolongation of the QT interval. The T wave has a fairly normal duration and contour, however. This is an example of hypocalcemia. (Type III congenital long QT syndrome also has this appearance.)