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 D
Explanation
Choice A rationale:
Poor skin turgor is a sign of dehydration and is not specifically related to hypoglycemia. It is assessed by pinching the skin on the back of the hand and observing how quickly it returns to its normal position.
Choice B rationale:
Fruity breath odor is associated with diabetic ketoacidosis (DKA), a complication of uncontrolled diabetes, not hypoglycemia. It is caused by the presence of ketones in the breath due to the breakdown of fats for energy in the absence of adequate insulin.
Choice C rationale:
Kussmaul respirations are deep, rapid, and labored breathing patterns seen in diabetic ketoacidosis (DKA), not in hypoglycemia. They are the body's attempt to blow off excess carbon dioxide and acid from the blood.
Choice D rationale:
Irritability is a common manifestation of hypoglycemia. Low blood glucose levels can affect brain function, leading to mood changes, irritability, and nervousness.
Correct Answer is A
Explanation
Choice A rationale:
Completely irrigating one eye before irrigating the second eye is the correct action to take when a client receives a chemical splash on their face. This approach helps prevent the potential spread of the chemical from one eye to the other. Irrigation should be done immediately to flush out the chemical and minimize its harmful effects.
Choice B rationale:
Informing the client to blink their eyes rapidly during the irrigation process is not recommended. Blinking may exacerbate the dispersion of the chemical and could lead to further damage to the eyes. Instead, the client should keep their eyes open during irrigation.
Choice C rationale:
Delaying the irrigation process until the type of chemical in the eyes is identified is not appropriate. Time is critical in minimizing the impact of the chemical on the eyes. Immediate irrigation is essential, regardless of the type of chemical, to remove the substance from the eyes.
Choice D rationale:
Asking the client to count the number of fingers held up by the nurse before irrigating their eyes is not relevant in this situation. The priority is to initiate immediate irrigation to remove the chemical from the eyes. Assessing the client's visual acuity can be done later in the evaluation process after the eyes have been irrigated.
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