115 final review

What is the major health risk for patients with atrial fibrillation?

Sinus tachycardia is considered serious or life-threatening in patients who have had a recent: stress test, loss of consciousness, viral infection, myocardial infarction

The abbreviation for myocardial infarction, also known as a heart attack, is:

When the sympathetic branch of the ANS (automatic nervous system) is stimulated, the heart responds by:

Which type of hypertension has no known cause?

Which of the following is a sign of ischemia?
Options:
absence of R waves.
ST segment located on the isoelectric line.
ST segment depression.
P wave inversion.

Which leads view the anterior wall of the left ventricle? Options: II, III, and aVF; V1 and V2; V3 and V4; I, aVL, V5, and V6

The P wave represents:

In which atrial dysrhythmia does the pacemaker site shift between the SA node, other sites in the atria, and/or the AV junction?

What type of rhythm occurs when the SA node fails to initiate the electrical activity and one of the backup pacemaker sites takes over?