AACN's ECG Test Questions and Answers

AACN's ECG Test Questions and Answers In a patient with a second degree AV block, you understand that impulses coming from the SA node are randomly being blocked at ___. - Ans:-In the AV node Using the small box method there are 15 small boxes between one R wave and the next. The rate on this strip is: - Ans:-The rate is 75 beats/min The J point is useful in determining the amount of ST elevation or depression the patient has because it represents the exact point where the ___ and ___. - Ans:-QRS complex finishes; ST segment begins A second-degree AV block type 2 has a high risk of progressing to complete heart block - Ans:-True Lead (I) - Ans:-Lateral surface Lead III - Ans:-Inferior surface Lead V1 - Ans:-Septal area Lead V4 - Ans:-Anterior surface What does the PR segment represent? - Ans:-The PR segment represents the travel time from the AV node to the purkinje fibers ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 2/4 Second degree AV block type I is usually a transient rhythm that requires no emergent treatment - Ans:-True You are caring for a 58-year-old male who came into the ED this morning complaining of dizziness and mild chest discomfort. He is placed on the bedside monitor, analyze the rhythm and note it to be second degree AV block type II. This patient has a significant history for myocardial infarction four months ago and hypertension. Current medications; aspirin 81 mg daily, hydrochlorothiazide 50/100 mg daily, lopressor 100 mg three times daily. What could be the cause of this patient's current rhythm? What would be an appropriate intervention? - Ans:-Recent MI and high dose of beta blocker use; hold beta blocker and notify the physician of rhythm as the patient is symptomatic Which of the following is the rate for a junctional escape rhythm? - Ans:-40-60 beats per minute You are caring for a 16-year-old 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 the cardiac monitor and to obtain a 12 lead ECG. She is in sinus rhythm but in 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 ___. - Ans:-Sinus rhythm with a mild vagal response to expiration; notifying the physician immediately All of the following are indications for temporary cardiac pacing EXCEPT: - Ans:-General anesth