Final Exam 2024 100% Complete Solutions

Which of the following is an absolute contraindication to stress testing? mild to moderate aortic stenosis a first degree heart block hypertension unstable angina or angina at rest {Ans: unstable angina or angina at rest}Sinus arrhythmia is __________. always a sign of cardiac disease always a problem with the electrical conduction system of the heart always a dangerous situation requiring emergency care most often a normal phenomenon reflecting variations in heart rate with inspiration and expiration {Ans: most often a normal phenomenon reflecting variations in heart rate with inspiration and expiration}Depolarization is a(n) __________________. mechanical event that should result in repolarization mechanical event that should result in depolarization electrical event that should result in muscle contraction electrical event that should result in muscle relaxation {Ans: electrical event that should result in muscle contraction}A non-sinus pacemaker is called a(n) ___________. atrial pacemaker ectopic pacemaker ventricular pacemaker artificial pacemaker {Ans: ectopic pacemaker}The mean rate is calculated by counting the number of ________________. P waves on a 6-second strip and multiplying by 10 QRS complexes in a minute-long rhythm strip P waves in a minute-long rhythm strip QRS complexes on a 6-second strip and multiplying by 10 {Ans: