A nurse is caring for a client who has a deep vein thrombosis and a prescription for heparin. For which of the following findings should the nurse withhold the medication and notify the provider?
INR 0.8, aPTT 85 seconds.
INR 2, aPTT 60 seconds.
The Correct Answer is B
Choice A rationale:
An INR (International Normalized Ratio) of 0.8 is within the normal range for someone not on anticoagulation therapy. The aPTT (activated partial thromboplastin time) of 85 seconds is prolonged, but it is not a reason to withhold heparin in itself. Therefore, the nurse should not withhold the medication for these values.
Choice B rationale:
An INR of 2 indicates the client's blood is taking twice as long to clot compared to the average, which can increase the risk of bleeding. The aPTT of 60 seconds is within the normal range. However, the elevated INR suggests the client might be overly anticoagulated, so the nurse should withhold the medication and notify the provider.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
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.
Correct Answer is ["B","D"]
Explanation
Choice A rationale:
Lurasidone does not necessarily need to be taken on an empty stomach. It can be taken with or without food.
Choice B rationale:
Avoiding grapefruit juice is essential with lurasidone as it can interfere with the drug's metabolism and increase the risk of side effects.
Choice C rationale:
Changing positions slowly is relevant for medications that can cause orthostatic hypotension, but lurasidone is not typically associated with this side effect.
Choice D rationale:
Lurasidone can cause insomnia in some individuals, so it is important for the client to be aware of this potential side effect. It is best taken in the evening to minimize this effect.
Choice E rationale:
While involuntary movements (extrapyramidal symptoms) can occur with some antipsychotic medications, lurasidone has a lower risk of causing these side effects compared to older antipsychotics. It is not a major concern with lurasidone treatment.
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