Q- Which one of the following conditions is the most common cardiac cause of electrical alternans?
A- Cardiac tamponade
B- Digitalis treatment
D- Restrictive cardiomyopathy
Q- Which one of the following muscles is responsible for internal rotation of the arm at the shoulder?
B- Pectoralis major
Q- Which of the following is the most common cause of aortic stenosis in elderly patients?
B- Bicuspid aortic valve
C- Dystrophic calcification of the aortic valve
D- Myocardial infarction