ECG Exam 2023 Questions with correct Answers

The ECG and cardiac monitor measure - ANSWER-The electrical activity of the heart During the Contraction phase of the cardiac cycle,the heart: - ANSWER-Pumps blood to the body The normal pacemaker of the heart is in the: - ANSWER-Right Atrium The normal rate of the pacemaker is: - ANSWER-60-100 beats per a minute Ectopic beats may occur if the normal pacemaker falls below: - ANSWER-50 Beats per a minute The A-V node can pace the heartbeat at the rate of: - ANSWER-40-60 beats per a minute The part of the cardiac cycle that results in a palpable pulse is the: - ANSWER-Ventricular contraction The ventricles can pace the heartbeat at a rate of: - ANSWER-20-40 beats per a minute The working phase of the cardiac cycle is: - ANSWER-systole Each small block on the ECG paper represents: - ANSWER-.04 Seconds Each large block on the ECG paper represents : - ANSWER-.20 Seconds The P wave represents the: - ANSWER-pacemaker firing The normal PR interval is: - ANSWER-.12 to .20 seconds The normal conduction time for the QRS complex is: - ANSWER-.06 to .10 seconds. The T wave represents the: - ANSWER-Resting Phase A condition in which the heart has many different pacemakers within the atria is: - ANSWER-atrial fibrilation An indication that the pacemaker is in the A-V junction is that the: - ANSWER-shape of the P waves is abnormal When the patient is having unifocal PVC's, you know that the pacemaker is in: - ANSWER-one area of the ventricles In a patient wiht myocardial infarction, which of the following conditions can be life threatening? - ANSWER-Multifocal PVC's Ventrcular tachycardia: - ANSWER-must be treated immediately A patient who is ventricular fibrillation always requries: - ANSWER-CPR According to Einthoven, electrical activity in the heart is viewed in: - ANSWER-three dimensions Inthe standard ECG: - ANSWER-12 Leads are used The standard leads are - ANSWER-I, II, III The central terminal includes - ANSWER-AVR, AVL, and AVF The posterior tibial pulse is located - ANSWER-on the inner ankle The dorsalis pedis pulse is located: - ANSWER-on the top of the foot Complications of cardiac catheterization include - ANSWER-Myocadial infarction Following cardiac catherterization, monitor the affected extremity for: - ANSWER-color and temperature Rhythms (and beats) originating in the A-V node may be called: - ANSWER-junctional When you have finished taking the ECG, roll the tracing so: - ANSWER-The V-leads are at the end and lead II is at the beginning To take an apical pulse, postion the diaphram of the stethoscope - ANSWER-just below the left nipple The difference between the apical pulse and radial puse is the - ANSWER-pulse deficit the pulse in the groin area is the - ANSWER-femoral pulse An insturment that amplifies sounds, similar to a stethoscope, is a - ANSWER-Doppler Prehypertension is a blood pressure value between - ANSWER-120/80 mm Hg and 139/89 mm Hg Prehypertension means: - ANSWER-The patient is likely to develop high blood pressure in the future Do not place the blood pressure cuff on an arm with a: - ANSWER-Dialysis access device A special dye that is injected through the intravenous catheter during an X-ray is: - ANSWER-contrast medium After an angiogram or arteriogram, the paitent will remain on bedrest for: - ANSWER-4-6 hours Any tissue in the heart is capable of conducting electrial impulses. - ANSWER-True To interpret the cardiac monitor, the PCT must have a good understanding of the conduction system of the heat - ANSWER-True The cardiac cycle consists of 4 phases - ANSWER-False The ST segment may be elecated if the patient is in congestive heart failure - ANSWER-True Ventricular rhythms can be life- threatening in the presence of myocardial infarction - ANSWER-True Cleaning the patients skin with alcohol promotes adherence of the ECG electrodes - ANSWER-True Allow the conductive gel to dry before applying the ECG electrodes. - ANSWER-False A dysrhythmia is an abnormal heart rhythm - ANSWER-True Telemetry allows the monitored patent to be ambulatory - ANSWER-True The Doppler is an amplified stethoscope - ANSWER-True Notifly the RN at the end of the shift if you cannot locate a patients pulse - ANSWER-False Dry electrodes do not produce a high-quality tracing - ANSWER-true take an apical pulse on any child who is 18 months of age or younger - ANSWER-true