CCI's CCT Prep Test Questions and Answers Completely Solved 100% Graded A

Which statement is correct regarding premature ventricular complexes (PVCs)? PVCs originate from the atrium. PVCs may be unifocal or multifocal in origin. PVCs will not lead to ventricular tachycardia. PVCs only originate from one site in the ventricles. - PVCs may be unifocal or multifocal in origin. A regular rhythm at a rate of 40-60 beats per minute, with narrow QRS complexes, and no visible P waves, is consistent with the presence of: atrial fibrillation. sinus bradycardia. junctional rhythm. idioventricular rhythm. - junctional rhythm. What is the proper lead placement for a right side 12 lead ECG? limb leads only placed in a mirror image of a standard 12 lead ECG chest leads only placed in a mirror image of a standard 12 lead ECG leads V1, V2, V3 only placed in a mirror image of a standard 12 lead ECG leads V4, V5, V6 only placed in a mirror image of a standard 12 lead ECG - chest leads only placed in a mirror image of a standard 12 lead ECG When conducting a Lexiscan stress test on a patient who is on a stretcher, what safety precaution should be taken? run a 12-lead ECG have crash cart available ensure patient has a pillow place patient in Trendelenburg - run a 12-lead ECG Per stress test protocol, exercise capacity should be reported in _____ of exercise. exact metastatic equivalents (METs) anatomic metaphysic electrons (AMEs) estimated metabolic equivalents (METs) approximated minutes of exercise (AMEs) - estimated metabolic equivalents (METs) Left ventricular hypertrophy is indicated when the combined measured amplitude is greater than or equal to 35 mm in which of the following leads? V1 or V2 S-wave, II or AVF R-wave V1 or V2 S-wave, V3 or V4 R-wave V1 or V2 S-wave, V5 or V6 R-wave V3 or V4 S-wave, V5 or V6 R-wave - V1 or V2 S-wave, V5 or V6 R-wave Lead V6 should be placed left mid-axillary line, 5th intercostal space. mid-clavicular level on the patient's right side. fifth intercostal space on the patient's right side. mid-sternal level in the center of the patient's chest wall. - left mid-axillary line, 5th intercostal space. Which of the following rhythms has an intrinsic rate of 40-60 beats per minute? SA nodal AV junctional idioventricular accelerated junctional - AV junctional An exercise stress test performed to: evaluate disorders such as CHF. identify ischemic changes due to CAD. mimic the diastolic heart changes at rest. determine if a CABG procedure is necessary. - identify ischemic changes due to CAD. You are beginning the warmup stage of a treadmill stress test and you observe a 3mm ST segment depression in leads I and aVL. What is the first thing you should do? continue with your pre-test activities initiate the first stage of the protocol stop the treadmill and notify the physician make a note and continue with the protocol - stop the treadmill and notify the physician The intrinsic rate of the Purkinje network in the ventricles is: 20 to 40 beats per minute. 40 to 60 beats per minute. 60 to 100 beats per minute. 100 to 150 beats per minute. - 20 to 40 beats per minute. What is the heart rate of an ECG with a constant R-R interval of 30mm recorded at a standard paper speed? - 50 bpm RR duration = R-R interval/paper speed HR=60s / RR duration 30mm / 25mm/s = 1.2s 60s / 1.2 = 50bpm Which leads are routinely checked to detect left atrial abnormality? V1 and V5 V4 through V6 V1 and Lead II Lead III and AVF - V1 and Lead II What is a common cause of somatic tremor? poor skin prep muscle movement wandering baseline electrical interference - muscle movement Ventricular tachycardia in which depolarization impulses moving from one ventricle to the other, resulting in a "twisted ribbon" appearance on the ECG tracing is called torsades de pointes. ventricular crossover. ventricular fibrillation. ideoventricular acceleration. - torsades de pointes. An anterior wall myocardial infarction occurs when anterior myocardial tissue supplied by the _____ artery suffers injury due to lack of blood supply. right circumflex obtuse marginal left anterior descending - left anterior descending Which ECG would you expect the doctor to order when the patient has dextrocardia? posterior 12 lead ECG standard 12 lead ECG right side 12 lead ECG dextrocardia right side 12 lead ECG - right side 12 lead ECG