A nurse is caring for a client who is experiencing acute kidney failure after a surgical procedure. Telemetry monitoring shows a widened QRS, frequent premature ventricular contractions, and a heart rate of 55/min. Which of the following electrolyte imbalances should the nurse identify?
Hyperkalemia.
Hypocalcemia.
Hyperglycemia.
Hypophosphatemia.
The Correct Answer is A
Choice A rationale:
The combination of widened QRS, frequent premature ventricular contractions (PVCs), and bradycardia (heart rate of 55/min) on telemetry monitoring suggests hyperkalemia. Elevated potassium levels in the blood can cause delayed repolarization of cardiac cells, leading to widened QRS complexes and PVCs. Bradycardia is another common manifestation of hyperkalemia.
Choice B rationale:
Hypocalcemia, characterized by low calcium levels in the blood, can lead to cardiac arrhythmias, but it typically presents with a prolonged QT interval rather than widened QRS complexes and PVCs.
Choice C rationale:
Hyperglycemia, which is high blood glucose levels, does not directly affect the electrocardiogram (ECG) parameters like QRS width or heart rate. It may have systemic effects, but it is not responsible for the ECG changes described in the scenario.
Choice D rationale:
Hypophosphatemia, or low levels of phosphate in the blood, can cause muscle weakness and may have systemic effects, but it is not associated with the specific ECG changes seen in hyperkalemia, such as widened QRS complexes and PVCs.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
The nurse should maintain the client in a semi-Fowler's position to promote comfort and reduce the risk of complications related to appendicitis. This position helps to decrease pressure on the abdomen and may alleviate pain by reducing tension on the abdominal muscles.
Choice B rationale:
Administering an enema 1 hour prior to surgery is not indicated for a client with appendicitis. Enemas are generally not recommended for clients with suspected or confirmed appendicitis as they can potentially worsen inflammation and cause perforation of the inflamed appendix.
Choice C rationale:
Applying a warm pack to the client's lower abdomen is contraindicated in appendicitis. Heat can exacerbate inflammation and should be avoided in such cases.
Choice D rationale:
Placing the client on a clear liquid diet is not appropriate for appendicitis. Clients with appendicitis are typically NPO (nothing by mouth) to avoid stimulating the gastrointestinal tract and reduce the risk of rupture if surgery is needed.
Correct Answer is D
Explanation
Choice A rationale:
Is not suitable for a client who has undergone a mastectomy with axillary lymph node dissection. This exercise may put a strain on the surgical site and cause discomfort or injury.
Choice B rationale:
Is also not appropriate for a postoperative mastectomy client. It involves using the left hand extensively, which could potentially disrupt the healing process and cause pain.
Choice C rationale:
Is not recommended for a postoperative mastectomy client. It involves significant upper body movement, which may not be well-tolerated after surgery, especially with lymph node dissection.
Choice D rationale:
This exercise is suitable for a postoperative mastectomy client as it helps in maintaining hand and arm mobility without putting excessive strain on the surgical site. It also aids in preventing complications like lymphedema, which is a potential concern after lymph node dissection.
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