CRAT - CCI Exam 164 Questions with Verified Answers 2023,100% CORRECT

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CRAT - CCI Exam 164 Questions with Verified Answers 2023 Potassium and calcium - CORRECT ANSWER the two electrolytes needed in order for the heart to function normally Acute myocardial infarct... ion - CORRECT ANSWER PACs are rarely dangerous, but in a patient with this condition, it can serve as an early sign or heart failure or electrolyte imbalance. Downward - CORRECT ANSWER as an electrical current travels to a negative pole on an ECG, the waveform deflects in which direction? late ventricular depolarization - CORRECT ANSWER what does the S wave represent on the ECG tracing? 5 - CORRECT ANSWER how many leads does a 24 hour holter monitor have? right atrium OR right ventricle - CORRECT ANSWER a single chamber pacemaker has one lead into which of the two chambers of the heart? many different foci - CORRECT ANSWER the patient is experiencing VFIB, where do the electrical impulses come from? lead II, III, AVF - CORRECT ANSWER on a 12 lead ECG, where would we look when trying to assess for AJR? pre-cardiac transplant patient - CORRECT ANSWER When is a biventricular pacer used? PR interval - CORRECT ANSWER What part of the ECG tracing starts with the atrial depolarization and ends with ventricular depolarization? 0.36-0.44 seconds - CORRECT ANSWER what is the normal QT interval length? medical history, meds, patient id, diagnostic results, date and time of test, symptoms and reason for test, informed consent docs, patient instructions - CORRECT ANSWER what should the ECG tech include in the patients chart entry? hyperkalemia, deep relaxation, increased intracranial pressure, valsalva maneuver, hypothyroidism, hypothermia, sleep, glaucoma, carotid sinus massage, vomiting, cardiac disease, certain drugs. - CORRECT ANSWER bradycardia can be caused by? sinus pause - CORRECT ANSWER If 1 or 2 beats are not formed in Atrial Standstill, its called? SA Node Failure - CORRECT ANSWER what would cause sinus arrest? anterior mi, CAD, PE, Cor Pulmonale, Rate Related BBB - CORRECT ANSWER what diseases cause Right Bundle Branch Block? brown - CORRECT ANSWER what color are the chest leads? atropine and temporary or permanent pacemaker - CORRECT ANSWER treatments for a junctional escape rhythm are? saw tooth waves, no pwave, regular ventricular rate, decrease cardiac output by 20-30% - CORRECT ANSWER signs associated with atrial flutter are? aortic stenosis, degenerative conduction system changes, CAD, hypertensive heart disease, QRS greater than 0.12 - CORRECT ANSWER causes and identifiers of Left Bundle Branch Block automaticity - CORRECT ANSWER cardiac cells ability to start impulses on their own is called? med effect, dysphonia, altered mental status, speech ability, foreign language, time constraint, inability to meet face to face, illness, racial/cultural differences, CVA, psychological illness. NOT SERUM GLUCOSE LEVEL - CORRECT ANSWER what are the barriers in patient-doctor communication? 40 Hz - CORRECT ANSWER what is the artifact filter used to reduce movement/tremors? use tech when appropriate, determine best learning style, include family, attempt to stimulate interest, consider strengths and weaknesses of patient. - CORRECT ANSWER tips for provide good patient education are? - location-before QRS - duration <0.12 - amplitude <0.25mV -configuration - upright/rounded -deflection - upright in lead I,II,AVp,V6 - CORRECT ANSWER characteristics of a PWAVE are? fasciculi - CORRECT ANSWER left bundle branch splits into two branches known as? ventricular depolarization is normal at this rhythm - CORRECT ANSWER what causes AJR to appear normal? sinus arrest - CORRECT ANSWER lack of electrical activity in the atrium causes? Right Bundle Branch Block - CORRECT ANSWER Letter M on QRS complex known as? V1-V6 - CORRECT ANSWER what are the 3D leads? ascending aorta - CORRECT ANSWER what is the largest artery in the human body? atrial systole, isovolumetric contraction, ventricular ejection, isovolumetric relaxation, ventricular filling - CORRECT ANSWER 5 steps of the cardiac cycle CHF, vagal stimulation, sick sinus syndrome, digoxin toxicity, electrolyte imbalance, rheumatic disease, inferior wall MI - CORRECT ANSWER common causes of junctional escape rhythm very low potassium level - CORRECT ANSWER U wave is present when there is a ? 1/1 - CORRECT ANSWER when an ECG is calibrated it is set to? ablation and/or permanent pacemaker - CORRECT ANSWER treatments for JT include? 10 seconds - CORRECT ANSWER at minimum how long of a measurement is used to determine if a pwave is occurring regularly or irregularly? U wave, flat T wave, long QT - CORRECT ANSWER hypokalemia causes ? epicardium - CORRECT ANSWER the layer that covers the myocardium? vertical axis - CORRECT ANSWER what axis is voltage measured? contractility - CORRECT ANSWER the hearts ability to stretch is known as? communication - CORRECT ANSWER the most important action required for patient care in a medical facility is? uncommon factors and heart damage - CORRECT ANSWER what are the predisposing factors of junctional rhythms? positive, negative, isoelectric - CORRECT ANSWER with an ECG, the voltage may be considered what? malsensing - CORRECT ANSWER what pacemaker complication causes the pacemaker to send currents to the heart during the relaxation phase? tricuspid regurgitation - CORRECT ANSWER what may develop if the patient has spontaneous atrial activity leading the VVI pacemaker to not synchronize the ventricular activity with it? V Fib - CORRECT ANSWER what causes the most cases of sudden cardiac death outside of the hospital? duration and configuration - CORRECT ANSWER when analyzing the QRS complex, you should concentrate on? cardiac surgery, acute myocarditis, calcium channel blockers, beta blockers, MI, digoxin toxicity - CORRECT ANSWER temporary AV blocks causes? avL, avF, avR - CORRECT ANSWER the unipolar leads are? implanted in the chest - CORRECT ANSWER temporary pacemakers are never what? customer service - CORRECT ANSWER a monitor tech @ a peds office offers to deliver an event monitor electrode patches which are less likely to cause skin irritation to a patients house after work, this is an example of? 60-75% - CORRECT ANSWER O2 saturation of blood in the right atrium? ask full name, check arm band and ask date of birth - CORRECT ANSWER examples of patient identifiers are? aorta - CORRECT ANSWER the aortic valve permits blood-flow to which structure? -standard -extended -expidited - CORRECT ANSWER what are the 3 forms of grievance? I, II, II AVF, AVL, AVR - CORRECT ANSWER What are the limb leads? contracility - CORRECT ANSWER the ability for the heart muscle to contract after it receives an electrical impulse is called? AV Block - CORRECT ANSWER AAI pacemakers are not used for patients with? potential risks - CORRECT ANSWER what is it called when there is a situation that could cause hard to the patient? hypotension syncope blurred vision chest pain palpitations nervousness anxiety NEVER hypertension - CORRECT ANSWER when cardiac output falls and compensatory mechanisms fail, a tachycardia patient may experience what? opposite deflection from normal QRS - CORRECT ANSWER what is unique about the Twave on a rhythm strip of VT? angle of Louis - CORRECT ANSWER what should be used to avoid mistakes in counting intercostal spaces? lateral wall of left ventricle - CORRECT ANSWER circumflex artery feeds what part of the heart? cardiomyopathy - CORRECT ANSWER what is not a cause of temporary AV Block? may have to shave hair - CORRECT ANSWER what might the ECG tech have to tell the patient before placing their leads on? restoration of normal function - CORRECT ANSWER what does repair of the ischemia in the AV node result in? 1 second - CORRECT ANSWER 25 mm is equal to what increment of time? resting negative charge - CORRECT ANSWER repolarization occurs so that the ventricular myocytes may recover their interior what? atrial kick - CORRECT ANSWER what contributes to 30% of cardiac output? right arm/left arm - CORRECT ANSWER the most common ecg lead misconnection/reversal occurs in which leads? changes in aging cardiomyopathy MI congenital abnormalities cardiac surgery - CORRECT ANSWER causes of permanent AV Block are? pins fitting electrolyte paste/gel clinging cracks damage to wires never teeth sharpness - CORRECT ANSWER alligator clips should be check for what? 0.13 seconds - CORRECT ANSWER approximate delay in seconds between atria and ventricle is? depending on monitor computer to find problem if patient DOES NOT keep a diary interfering factors uncooperative 4/10% likelyhood of capture of arrhythmia electrode contact interruption - CORRECT ANSWER what are the holter monitor limitations? semilunar valves aortic and pulmonic - CORRECT ANSWER cardiac valves with half moon shapes? programability versitility ability to mimic normal physiological cycle and maintain av synchrony ability to automatically change modes sense and pace ventricals - CORRECT ANSWER DDD pacemaker advantages are? AVR, AVL, AVF - CORRECT ANSWER what are the augmented limb leads? I, II, III - CORRECT ANSWER AVL, AVF, AVR use the same leads as? hypersensitive carotid sinus - CORRECT ANSWER what is the stimulation of the carotid sinus that causes episodes of asystole resulting in recurrent syncope? 400-600 times - CORRECT ANSWER in AFIB the atria will fire how many times? enhanced automaticity re-entry afterdepolarization - CORRECT ANSWER atrial arrhythmias result from these three mechanisms myocardial infarction - CORRECT ANSWER what might a deep and wide q wave represent? at w/ block MAT PAT - CORRECT ANSWER what are the 3 kinds of AT electrical capture - CORRECT ANSWER when evaluation pacemaker function, the evidence seen when viewing the cardiac tracing on the heart monitor is known as? first degree - CORRECT ANSWER what SA block is not seen in the rhythm strip? av node - CORRECT ANSWER usually the chest leads are oriented through this location to project through the patients back? preload - CORRECT ANSWER resulting from the blood volume in the ventricles at the end of diastole the passive stretching of the muscle fibers in the ventricles is called? coronary arteries fill - CORRECT ANSWER what happens when the ventricles are in diastole and the aortic valve is closed? malfunctioning - CORRECT ANSWER which pacemaker complication involves irregular pacemaker interval with slower than set rate impulses and no visual pacemaker spikes? digoxin toxicity - CORRECT ANSWER whats the most common cause of AT? diastole - CORRECT ANSWER the ventricles relax and the atria contract. The blood is forced through the open tricuspid valve and mitral valves during? heart disease infection vagal stimulation sick sinus syndrome - CORRECT ANSWER sinus arrest occurs when the SA node fails to generate an impulse which may be caused by what? conduction of electrical impulses through both ventricles - CORRECT ANSWER in the QRS complex what does the S wave represent? the stretch that is between 2 electrodes - CORRECT ANSWER what best describes a cardiac lead? peaked t wave - CORRECT ANSWER hyperkalemia can show what twave abnormality 400-600 times per minute - CORRECT ANSWER ectopic impulses fire at a rate of what in AFIB? ST segment - CORRECT ANSWER early ventricular repolarization would be indicated in what ECG structure? pulmonic valve - CORRECT ANSWER the right ventricle pumps blood through the _______________ to the pulmonary arteries? congenital defect mi beta blockers cad digoxin toxicity calcium channel blockers surgical injury aging - CORRECT ANSWER 3rd Degree AVB is generally caused by which condition? stroke volume - CORRECT ANSWER Each time the heart beats, the amount of blood that is ejected from the ventricles would be considered which of the following? the heavy black lines between the P waves - CORRECT ANSWER In the sequence method of calculating atrial rate, the technician must memorize a series of numbers to assign to which of the following? the 10 times method - CORRECT ANSWER The method of calculating the atrial rate that is best employed when there is an irregular rate is which of the following? ventricular myocytes - CORRECT ANSWER Purkinje fibers end in minuscule filaments that directly depolarize which of the following? Increased automaticity of the atrial tissue - CORRECT ANSWER Atrial tachycardia with block is caused by which of the following? Apex of the heart - CORRECT ANSWER During the QRS complex, the ventricular contraction proceeds from which of the following to the base of the heart? Isovolumetric relaxation - CORRECT ANSWER Atrial diastole occurs during which phase of the cardiac cycle? 10 to 20 mL - CORRECT ANSWER Which of the following would be considered the normal volume of pericardial fluid around the heart? Lead II - CORRECT ANSWER Which ECG limb lead is helpful in detecting changes related to an inferior wall myocardial infarction? AV node - CORRECT ANSWER Which of the following is blocking the conduction of some of the atrial impulses if the atrial beats are conducted only periodically? Junctional tissue - CORRECT ANSWER Nodal tissue itself does not have pacemaker cells, but the tissue that surrounds it, called which of the following, does? Emergency department - CORRECT ANSWER Hardwire monitoring is generally employed in intensive care units and which of the following? Ventricles - CORRECT ANSWER Normal sinus rhythm records an impulse that begins in the sinus node and ends in which of the following? Plateau phase - CORRECT ANSWER The initial phase of ventricular repolarization is known as which of the following? t wave - CORRECT ANSWER Which of the following waves is unidentifiable in atrial flutter on the rhythm strip? drops off CO2 and picks up O2 - CORRECT ANSWER Which of the following would be considered correct for when the blood reaches the lungs? An irregularity caused by an early beat - CORRECT ANSWER The PJC's (premature junctional contraction) shows as which of the following on an EKG strip? 1 mm or greater above baseline - CORRECT ANSWER Which of the following defines an elevated ST segment? direct-current synchronized carioversion - CORRECT ANSWER Unstable ventricular tachycardia patients with heart rates greater than 150 bpm, and hypotension, shortness of breath, an altered LOC, heart failure, angina, or myocardial infarction are generally treated with which of the following? bachmann's bundle - CORRECT ANSWER In the cardiac conduction system, the impulses travel out from the SA node through the internodal tracts and which of the following before reaching the AV node? A feeling of quickening in the chest or palpitations - CORRECT ANSWER If a patient is admitted with a differential diagnosis of premature junctional contractions, which of the following would the nurse look for? pericarditis - CORRECT ANSWER In an adult, if the T wave is heavily notched or pointed, it could indicate which of the following? t wave - CORRECT ANSWER Which of the following would be considered concurrent with the end of ventricular systole? Lead off the chest - CORRECT ANSWER Which of the following will cause a wave sign not to be seen at all? libel - CORRECT ANSWER Writing defamatory statements about a patient that could jeopardize their reputation or livelihood is known as which of the following? right ventricle - CORRECT ANSWER Which of the following pumps the blood through the pulmonic valve into the pulmonary arteries and then on into the lungs? junctional arrythmias - CORRECT ANSWER Which of the following happens when the SA node impulses are suppressed and they come from around the AV Junction? coronary sinus - CORRECT ANSWER Which of the following returns blood to the right atrium? Patient needs - CORRECT ANSWER When developing a plan for patient education, which of the following would be the first thing that should be considered? 3, 10x method, 1500 method, sequence method - CORRECT ANSWER How many methods are there for calculating ventricular rate from a rhythm strip? One-on-One - CORRECT ANSWER f the nurse/technician shares information at the patient's bedside or physician's office, it would be considered ______________ discussion? afterload - CORRECT ANSWER The pressure the ventricular muscles must develop to surmount the greater pressure in the aorta to expel the blood out of the heart is known as which of the following? irregular ventricular and atrial rhythms - CORRECT ANSWER When looking for a PAC (premature atrial contraction) on an ECG, the technician should look for which of the following? accelerated junctional rhythm - CORRECT ANSWER Which of the following is caused by an irritable focus that causes the AV junction to take over as the heart's pacemaker and speed up? 1500 method - CORRECT ANSWER Which of the following uses the amount of small squares that are on the ECG paper in one minute to calculate the heart rate? conductivity - CORRECT ANSWER When the cardiac cells are able to receive and then transmit the electrical stimulus, it would be considered ________? right to left - CORRECT ANSWER Lead I in an ECG provides a view of the heart that shows the current moving from which of the following directions? written, demonstrative, verbal - CORRECT ANSWER Of the following, which term would best be used to describe patient education instruction? 2 - CORRECT ANSWER Every patient, according to The Joint Commission, must be identified by at least how many forms of identification? atrial fibrillation - CORRECT ANSWER The VVI pacemaker is commonly used for patients with a permanent pacemaker who have which of the following? premature ventricular contraction - CORRECT ANSWER Electrical irritability in the ventricular conduction system or muscle tissue is what causes which of the following? automaticity - CORRECT ANSWER As a result of bradycardia, which of the following tends to diminish? lead III - CORRECT ANSWER A small Q wave is typically not seen in which of the following leads on an electrocardiogram? drugs : amiodarone, erythromycin, ibutilide, droperidol, haloperidol, sotalol. electrolyte abnormalities and myocardial ischemia - CORRECT ANSWER The most common causes of Torsades de Pointes is which of the following? calcium channel blockers - CORRECT ANSWER All of the following might be considered a treatment for the patient that is experiencing a peaked "T" wave on their electrocardiogram except? parietal and visceral layer - CORRECT ANSWER Layers of the serous pericardium would include which of the following? sensors - CORRECT ANSWER An accurate word that the technician can use in place of electrodes to keep from instilling fear in the adult patient would be which of the following? first degree - CORRECT ANSWER Which degree of AV block is present if all of the atrial impulses reach the ventricles, with a conduction delay occurring within the AV node? v3,v4 and LAD - CORRECT ANSWER Which of the following cardiac leads are typically affected by an anterior wall myocardial infarction? 10 - CORRECT ANSWER How many mm= 1mV 0.04 s - CORRECT ANSWER Who many seconds is 1 small square? 5 - CORRECT ANSWER How many small squares in a large square 5 large squares = 1 seconds - CORRECT ANSWER How many large squares equal 1 second 50 large squares = 10 seconds - CORRECT ANSWER How many large squares = 10 seconds? V1-V2, Septal LAD - CORRECT ANSWER Areas and arteries affected in a septal infarct are? I, aVL, V5, V6 , LCx, diagonals - CORRECT ANSWER Arteries and areas affected by lateral infarct? V3-v4, LAD - CORRECT ANSWER Areas and arteries affected in anterior infarct? II, III, AVF, LCx 15%, RCA 85% - CORRECT ANSWER Areas and arteries affected in inferior wall infarct? V7, V8, V9 posteriorly placed, RCA - CORRECT ANSWER Posterior infarct areas and arteries affected? v1 -v2 proximal LAD - CORRECT ANSWER septal MI leads and artery v5-v6 distal LAD, LCx or RCA - CORRECT ANSWER apical mi leads and artery I, AVL LCx - CORRECT ANSWER lateral wall MI leads and artery II, AVF, III 90% RCA, 10% LCx - CORRECT ANSWER inferior wall mi leads and artery v7, v8, v9 RCA or LCx - CORRECT ANSWER posterolateral mi leads and arteries [Show More]

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