You are the Registered Nurse (RN) taking care of a patient who comes to you post-operation after a permanent pacemaker insertion.
Which of the following should NOT be included in patient/caregiver education and teaching?
You should not have a Magnetic Resonance Imaging (MRI) unless the pacemaker is MRI approved.
There are no restrictions on showering after the procedure.
Monitor the incision site for any signs of infection such as redness, warmth, and drainage.
Educate the patient on not lifting or raising the arm on the side of the pacemaker until he is cleared by his doctor.
The Correct Answer is B
Choice A rationale
MRI generates powerful magnetic fields and radiofrequency pulses that can potentially interfere with the function of a pacemaker, reprogram it, heat the lead tips, or damage the device's circuitry. Patients must confirm if their pacemaker is specifically MRI-conditional or MRI-safe before undergoing the imaging procedure to prevent serious complications, a vital component of patient education.
Choice B rationale
Post-procedurally, patients should be instructed to keep the incision site clean and dry for a specified period, typically several days to a week, to promote healing and prevent infection. Showering is usually permitted but the site should be kept dry, or sponge bathing is recommended initially. The restriction is usually on submerging the site (baths, hot tubs, swimming), making the blanket "no restrictions on showering" advice unsafe.
Choice C rationale
Infection is a serious potential complication following any surgical procedure, including pacemaker insertion. Patients and caregivers must be taught to recognize the classic signs of a localized infection, which include erythema (redness), warmth, pain, and any type of purulent or non-purulent drainage from the incision site, necessitating prompt medical attention.
Choice D rationale
To prevent lead dislodgement from the endocardium before sufficient tissue growth secures it, patients are advised to restrict movement of the arm on the insertion side. Specifically, they should avoid vigorous activity, lifting more than a few pounds, and raising the arm above the shoulder for several weeks as directed by their cardiologist. —. ##.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale
This value is scientifically incorrect for the duration represented by one large square on standard EKG paper. Each large square on the EKG represents a standard time interval for measuring cardiac electrical activity, which is calibrated to allow for consistent interpretation of rhythm and rate. The time represented is based on the paper speed, usually 25 mm/second.
Choice B rationale
One large square, spanning 5 millimeters horizontally on standard EKG paper moving at a speed of 25 mm/second, precisely represents 0.20 seconds of elapsed time. This standard calibration allows for accurate calculation of heart rate and rhythm intervals, as 5 mm÷ (25 mm/second) = 0.20 seconds. This is fundamental for EKG interpretation.
Choice C rationale
This value, 0.04 seconds, is the standard duration represented by one small square, which is 1 millimeter wide, on standard EKG paper. Five small squares make up one large square; therefore, 5 × 0.04 seconds = 0.20 seconds for one large square, making this choice incorrect for a large square.
Choice D rationale
This value, 0.12 seconds, is scientifically incorrect for the duration of a single large square. It is, however, the upper limit of the normal range for the QRS complex duration, which represents ventricular depolarization and typically spans three small squares. —.
Correct Answer is A
Explanation
Choice A rationale
ST-segment elevation on an ECG indicates acute myocardial injury, often progressing to an ST-elevation myocardial infarction (STEMI). Leads II, III, and aVF view the inferior wall of the left ventricle, which is typically supplied by the Right Coronary Artery (RCA). This finding localizes the area of infarction to the heart's inferior surface.
Choice B rationale
Prinzmetal's (variant) Angina is a type of chest pain caused by coronary artery spasm, leading to transient myocardial ischemia. While it can cause temporary ST-segment elevation during an episode, these changes resolve quickly once the spasm ceases, unlike the persistent elevation seen in a full-blown acute STEMI.
Choice C rationale
Myocardial ischemia (inadequate blood flow) is usually characterized by ST-segment depression or T-wave inversion. ST-segment elevation specifically indicates myocardial injury (a more severe, evolving stage) or infarction, meaning the patient is past the stage of "ischemia only.”.
Choice D rationale
A permanent pacemaker is used to treat symptomatic bradyarrhythmias or certain heart blocks, not acute STEMI. ST-segment elevation in the inferior leads is a sign of an acute coronary syndrome requiring urgent treatment like percutaneous coronary intervention (PCI) or fibrinolytic therapy, not pacing.
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