What is the cause of a myocardial infarction?
a. Decreased perfusion to the pulmonary ar-tery
b. Partial or complete obstruction of a coro-nary artery
c. Blockage in one or more of the great ves-sels
d. Narrowing of part of the aorta
ANS: B
Partial obstruction of a coronary artery may lead to tissue ischemia (decreased O2 supply), a clin-ical condition called angina pectoris. Complete obstruction may cause tissue death or infarct, a condition called myocardial infarction (MI).
You might also like to view...
Which of the following would be an example of motor development?
A) Visual perception B) Hearing perception C) Reflexes D) Both a and b
A frequency distribution plotted on a curve can be both symmetrical or skewed. A curve skewed to the right is also referred to as ____
A) positively skewed B) negatively skewed C) both positively and negatively skewed depending on the data D) neither positively or negatively skewed