The nurse is caring for a patient with refractory atrial fibrillation who underwent the maze procedure several months ago.
The nurse reviews the result of the patient’s most recent cardiac imaging, which notes the presence of scarring on the atria.
Recognize that the procedure was unsuccessful.
Prepare the patient for pacemaker implantation.
Consult with the care team in preparation for repeating the maze procedure.
Recognize this as a therapeutic goal of the procedure.
The Correct Answer is C
Choice A rationale:
Incorrect. Scarring on the atria is not an indication of procedure failure in the context of the maze procedure. In fact, it's a desired outcome.
Pacemaker implantation: Not routinely indicated after the maze procedure, even if scarring is present. Pacemakers are primarily used to treat bradyarrhythmias (slow heart rhythms), not atrial fibrillation.
Choice B rationale:
Incorrect. Repeating the maze procedure is generally not considered unless there's clear evidence of recurrent atrial fibrillation despite initial scarring. Scarring formation takes time, and premature repeat procedures are often not necessary.
Consulting the care team: While collaboration is essential, consultation specifically for repeating the procedure based solely on scarring would be premature.
Choice C rationale:
Correct. The maze procedure intentionally creates scar tissue within the atria to block abnormal electrical signals that cause atrial fibrillation. Scarring disrupts the pathways that allow these signals to circulate and trigger fibrillation. Therefore, the presence of scarring is a positive finding that suggests the procedure has achieved its intended effect.
Choice D rationale:
Incorrect. Further diagnostic testing is not routinely indicated solely based on the presence of scarring after the maze procedure. Additional testing might be considered if the patient experiences recurrent atrial fibrillation or other concerning symptoms, but scarring itself does not necessitate immediate further investigation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale:
While bananas do contain fiber, which is beneficial for digestive health and can help regulate blood sugar levels, it is not the most relevant information for a patient with electrolyte imbalance induced ventricular tachycardia. The primary focus should be on addressing the electrolyte imbalance, specifically potassium levels.
Choice B rationale:
Bananas do contain manganese, an essential mineral that plays a role in bone health, metabolism, and wound healing. However, manganese is not directly involved in regulating electrolytes or heart rhythm. Therefore, it's not the most pertinent information for this patient's condition.
Choice C rationale:
While it's true that bananas are relatively low in sodium, this information is not as crucial for a patient with electrolyte imbalance induced ventricular tachycardia. Potassium, not sodium, is the electrolyte that's most likely to be deficient in this condition and needs to be addressed.
Choice D rationale:
Bananas are an excellent source of potassium, a crucial electrolyte that plays a vital role in regulating heart rhythm, muscle contractions, and nerve function. Potassium deficiency, or hypokalemia, can lead to various cardiac arrhythmias, including ventricular tachycardia. Therefore, increasing potassium intake through dietary sources like bananas can be an effective strategy to help manage electrolyte imbalance and potentially reduce the risk of arrhythmias.
Correct Answer is ["C","D"]
Explanation
Choice A rationale:
The ST segment represents the period of time between ventricular depolarization and repolarization. Its elevation or depression can indicate myocardial ischemia or injury, but it's not directly related to normal sinus rhythm determination.
The PR interval, on the other hand, measures the time it takes for the electrical impulse to travel from the atria to the ventricles. While a normal PR interval is essential for normal sinus rhythm, its height relative to the ST segment is not a determining factor.
Choice B rationale:
The number of complexes in a 6-second strip can provide a quick estimate of heart rate, but it's not a definitive criterion for normal sinus rhythm. A normal heart rate in adults typically ranges from 60 to 100 beats per minute, which could correspond to 5-10 complexes in a 6-second strip. However, other factors, such as rhythm regularity and P wave morphology, must also be considered. Choice C rationale:
RR intervals that are relatively consistent are a hallmark of normal sinus rhythm. This indicates that the heart is beating at a regular pace, with equal time intervals between each QRS complex. In contrast, irregular RR intervals suggest dysrhythmia, such as atrial fibrillation or premature ventricular contractions.
Choice D rationale:
One P wave preceding each QRS complex is another essential feature of normal sinus rhythm. The P wave represents atrial depolarization, and its consistent presence before each QRS complex (which represents ventricular depolarization) indicates that the electrical impulse is originating in the sinoatrial (SA) node, the heart's natural pacemaker, and is propagating through the atria and ventricles in a coordinated manner.
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