AACN's ECG Test 1: Foundation fully solved 2023

AACN's ECG Test 1: Foundation fully solved 2023Sinus arrest may be life threatening if atrial activity is not restarted. - correct answer True Which of the following is NOT a common cause of third-degree AV block? - correct answer Hypertrophic obstructive cardiomyopathy All of the following are findings of Second Degree AV Block Type I except: - correct answer Frequent idioventricular escape beats You recently take over care of Ms. Alrashid, a 34 year old Egyptian woman admitted to your unit. Thirty (30) minutes ago she converts from Sinus Rhythm to atrial tachycardia. What symptoms are she likely to report when you go in to assess her, and why? - correct answer She feels weak and dizzy because her heart rate is so fast ventricular filling time is decreased. This is likely to be why she is hypotensive. A rhythm strip that has consistent R-R intervals and P-P intervals is said to be a regular rhythm. - correct answer True All second degree AV blocks are the result of failure of the impulse generated by the SA node to reach the AV node. - correct answer False Which of the following is the rate for a junctional escape rhythm? - correct answer 40 - 60 beats per minute Multifocal atrial tachycardia, also known as Wandering Atrial Pacemaker, is identified by: - correct answer Irregular R-R interval and P waves of different shapes In a typical 5 lead configuration where is the white electrode (RA) placed? - correct answer The white electrode (RA) is placed at the infraclavicular fossa, close to the right shoulder. Atrial Fibrillation is identified by all of the following except: - correct answer B) Normal P-P interval In a patient with a Second Degree AV block, you understand that impulses coming from the SA node are randomly being blocked at ____________. - correct answer A point below the AV node When selecting a lead to monitor which of the following should be present? - correct answer A large, distinct R wave Using the sequence method, there is an R wave that hits on a dark line, the next R wave is 4 boxes later. The rate for this strip is: - correct answer 75 beats/min The PR interval: (Select all that apply) - correct answer Includes the P wave and the PR segment Is measured from the beginning of the P wave to the beginning of the QRS Is typically 0.12 - 0.20 seconds (120 - 200 msec) What bipolar lead is similar to V1? - correct answer Lead MCL1 You are caring for a 16 y/o female in the emergency department. She presented with complaints of chest pain with sudden movement or when taking a deep breath. The physician asked for her to be placed on a cardiac monitor and to obtain a 12 Lead ECG. She is in sinus rhythm but on closer observation you notice her HR drops from 80 to 72 during expiration, then increases to 80 again with inspiration. You identify the rhythm as _______________, and your interventions will include _________________. - correct answer Sinus Arrhythmia; post the rhythm strip noting that this is common in adolescents and continue to monitor R-R interval helps determine ventricular rates. Atrial rates are determined using which of the following? - correct answer P to P interval Mr. Pratz is a 68 y/o male admitted to the hospital with a newly diagnosed cardiomyopathy most likely from a viral infection. His bedside monitor shows him to be experiencing periods of bigeminy PVCs and occasional couplets. The alarm on his monitor sounds as you enter his room. He is awake and alert, rubbing his chest and complaining of shortness of breath and chest pain. The physician enters the room and requests preparation for synchronized electrical cardioversion. As you are gathering equipment to perform the cardioversion, Mr. Pratz becomes unresponsive and has no palpable pulse. Your immediate response is: - correct answer Immediately begin CPR and prepare to perform electrical defibrillation To calculate the ventricular rate using the 6 second method, multiply by 10 which of the following indicators. - correct answer Tll the R waves inside the 30 big boxes or 3 hash marks at the top of the strip Temporary epicardial pacing requires that: - correct answer Pacing wires are placed directly on the heart muscle by the cardiothoracic surgeon during cardiac surgery Which of the following is a normal PR interval? - correct answer 3-5 small boxes (0.12-0.20 seconds)