EKG Final Exam Mid 2023 Graded A

EKG Final Exam Mid 2023 Graded A Which atrial dysrhythmia has capital F waves and a classic sawtooth or picket fence appearance? AnsAtrial flutter What is the term for PVCs that all have a similar shape on a tracing? Ans- Unifocal PVCs What causes STEMI? Ans- Complete occlusion of a coronary artery Frequently, for infants or children with very fast heart rates, you will need to adjust the paper speed to _____. Ans- 50 mm/sec What rhythm causes the atria to quiver, similar to a bowl of Jell-O? Ans- Atrial fibrillation When applying chest leads, you will place the V2 lead: Ans- at the fourth ICS, left sternal border. Select the correct answer. Which of the following are ways to correct wandering baseline? Ans- Apply electrodes securely, remove tension from lead wires. What is the rate of wandering atrial pacemaker rhythm (WAP)? Ans- 60 to 100 beats per minute Which heart block rhythm has a constant PR interval that measures greater than 0.20 seconds? AnsFirst-degree AV block When would you use the mnemonic "Lengthen, lengthen, drop equals Wenckebach"? Ans- To differentiate second-degree Mobitz type I heart block from Mobitz type II heart block What is a typical cause of NSTEMI? Ans- An incomplete occlusion of a coronary artery You have begun performing an ECG on a patient, and the tracing appears as a flat line. What is the first thing you should do? Ans- Remain calm and check the patient. Which of the following signs and symptoms are characteristic of every patient experiencing ventricular fibrillation? Ans- Unconsciousness, apnea, and no pulse Which of the following problems can cause wandering baseline on the ECG tracing? Ans- Improperly applied electrodes or poor skin preparation A condition in which no rhythm or electrical current travels through the cardiac conduction system is known as: Ans- asystole. When feeling the chest area in order to place the ECG electrodes properly, the dip that you can feel at the anterior base of the neck, just above the manubrium, where the clavicle attaches to the sternum, is called the: Ans- suprasternal notch. A pattern in which every third complex is a premature beat is referred to as: Ans- trigeminy. Select the correct answer. Somatic tremors are caused by Ans- muscle movement. When properly positioning the chest lead electrodes, you should make sure that the electrode is placed on the _____ of the rib cage. Ans- intercostal space What is the term for a PVC that occurs on the T wave or during the vulnerable period of the ventricular refractory period? Ans- An R-on-T PVC What is the term for the condition in which the atria and ventricles are electrically separated from one another? Ans- AV dissociation What percentage of patients with ventricular tachycardia become unconscious immediately? Ans- 50% Which pacemaker rhythm has a pacing spike before the QRS complexes but no pacing spike before the P waves? Ans- Ventricular pacemaker rhythm What is the major health risk for patients with atrial fibrillation? Ans- Thrombus formation or embolism Which ventricular dysrhythmia has a heart rate between 20 and 40 bpm? Ans- Idioventricular rhythm When attaching the lead cable wires to the electrodes, it is important to: Ans- follow the contours of the body and avoid looping the wires outside the body. Unstable angina is a warning sign that a patient's cardiac disease has ________. Ans- Worsened What symptoms would you observe in a patient with first-degree AV block? Ans- The patient would have normal cardiac output and no symptoms. You are about to record an ECG on a patient who has Parkinson's disease. What measures can you take to prevent somatic tremors from being recorded on the ECG recording? Ans- Have the patient put his or her hands, palms down, under the buttocks. QRS duration measurement is essential to determine the time it takes for: Ans- ventricular contraction. Which of the following is characteristic of an ECG tracing for a first-degree heart block? Ans- The PR intervals are greater than 0.20 seconds in duration. A traveling blood clot in the lungs is known as Ans- pulmonary embolism. If a QRS complex measures 0.12 second or wider, it most likely indicates Ans- delayed ventricular conduction. What percentage of patients present with STEMI? Ans- 75% to 80% Select the correct answer. Which of the following are ways to correct AC interference? Ans- Unplug electrical equipment, move bed away from wall Which three groups of patients may present with atypical cardiac complaints or problems? AnsWomen, the elderly, patients with diabetes What is the rate of multifocal atrial tachycardia (MAT) rhythm? Ans- 101 to 150 beats per minute What occurs immediately prior to ventricular systole when blood is ejected from the atria into the ventricles? Ans- Atrial kick What term describes the ability of the heart to initiate an electrical impulse without being stimulated by another or independent source? Ans- Automaticity What is the typical heart rate with accelerated idioventricular rhythm? Ans- 40 to 100 bpm What is the primary difference between idioventricular rhythm and accelerated idioventricular rhythm? Ans- Heart rate Sinus tachycardia may be a normal finding in people as a result of: Ans- exercise. Which of the following is an ectopic impulse that occurs early in the cycle and originates from the ventricles? Ans- PVC You should place the limb electrodes before the chest electrodes because: Ans- the ECG will not run at all without the limb leads attached. Which heart block dysrhythmia is known as classical heart block? Ans- Second-degree AV block, Mobitz type II When applying chest leads, you will place the V4 lead: Ans- at the fifth ICS, left midclavicular line. Approach the patient from the _____ if possible when performing an ECG. Ans- left side Select the correct answer. When applying chest leads, V1 is placed: Ans- at the fourth ICS, right sternal border. What minimally invasive procedure is frequently performed to open narrowed or blocked blood vessels? Ans- Angioplasty In which heart block dysrhythmia would a patient probably be unconscious and require immediate medical intervention? Ans- Third-degree AV block When placing the chest electrodes on a female with large breasts, you must: Ans- lift the breast and place the electrodes in the closest position possible. What is the rate of a normal sinus rhythm? Ans- 60 to 100 bpm Which of the following rhythms does not necessarily require immediate emergency interventions? AnsPVCs What type of PVCs occur in varied shapes and forms? Ans- Multifocal PVCs Which term indicates the mark on an ECG tracing that represents the stimulation of electrical current from the pacemaker generator? Ans- Pacing spike How many different P wave configurations in the same lead indicate a wandering atrial pacemaker (WAP)? Ans- Three Appearance of a QRS complex after a pacing spike indicates that what has occurred? Ans- Ventricular capture A stroke caused by a hemorrhage in the brain, or more often by a clot lodged in a cerebral artery, is known as a: Ans- cerebrovascular accident (CVA)