EKG Certification Exam Questions With Correct Answers

Left Ventricular Hypertrophy - Answer R wave in V5 is increased and S wave in V1 is increased Both are added together and should be greater than 35 mm Describe the placement of the V5 Lead - Answer 5th intercoastal space halfway between V4 and V6 on the L side of the heart _________is when the PR interval becomes longer and longer until a beat is skipped - Answer 2nd Degee AV block: Mobitz 1 What does Systolic blood pressure mean? - Answer peak blood pressure during ventricle contraction Trace the vessels that carry blood to and from the heart - Answer Arteries--> Aterioles--->Capillaries-->Venules--->Veins Name the conduction pathway of the heart - Answer SA Node-----AV Node----Bundle of His----R & L Bundle Branches----Purkinje Fibers What structure branch from the R Coronary Artery? - Answer Marginal Arteries and Posterior Interventricular Septum Positive Dromotrophic drugs - Answer Increase heart's conduction speed What is the cause of ST depression and inverted T waves? - Answer Myocardial Ischemia What is the inherent ventricular rate? - Answer less than 40 bpm Which leads diagnose ventricular hypertrophy? - Answer V1 & V5 Negative chronotropic drugs - Answer Decrease HR Describe the placement of V6 - Answer Left side of the heart on 5th intercoastal space on the mid axillary line Positive QRS in LI and positive QRS in AVF is what kind of deviation? - Answer Normal Name the major arteries that branch of the aorta - Answer Subclavian, Cartoid, Brachiocephalic Describe the placement of V2 - Answer 4th Intercoastal space on the left side of the heart Blood leaving the LV flows through the _________into the systemic circulation. - Answer Aortic Semi Lunar Valve What do the semilunar valves prevent? - Answer backflow of the blood from the aorta into the LV Describe placement of the V4 - Answer Left side of the sternum on the 5th Intercoastal space on the mid clavicular line The normal height of the P wave should be - Answer 3small squares high x less than 3 small squqares Where is the PR interval measured? - Answer Beginning of the P wave to the beginning of the Q wave What type of resistance to blood flow primarily is caused by friction within the vessel walls? - Answer Peripheral resistance What is the oxygen saturation of the LAtrium? - Answer 95% Movement of an impulse to positive electrode causes a ______________deflection. - Answer Upward Where is the Mitral Valve located? - Answer In between the Left Atrium and Left Ventricle What are the characteristics of "Wandering Pacemaker"? - Answer P waves have all different shapes What do spiked T waves indicate? - Answer Hyperkalemia What does the T wave represent? - Answer Ventricular replorization What is the first upward deflection on the ECG? What does it represent? - Answer 1. P wave 2. Atrial deplorization What is the standard ECG paper speed? - Answer 25 mm/sec What is the rate for tachycardia? - Answer HR that is greater than 100 but less than 250 bpm Name the Three deflections in the QRS - Answer Q=downward R=Upward S=downward What is the oxygen saturation of the Right Atria? - Answer 75% What does MCL stand for? - Answer Modified Chest Lead Positive chronotropic drugs___________ HR. - Answer Increase