A nurse on a telemetry unit is reviewing the laboratory results for a client who has atrial fibrillation and is taking warfarin. Which of the following laboratory values should the nurse report to the provider?
Hemoglobin (Hgb) : 16 g/dL
Prothrombin Time (PT) : 45 seconds
Activated Partial Thromboplastin Time (aPTT) : 36 seconds
Platelets : 190,000/mm
The Correct Answer is B
Choice A reason : A hemoglobin (Hgb) level of 16 g/dL is within the normal range for adults, which typically falls between 13.8 to 17.2 g/dL for men and 12.1 to 15.1 g/dL for women. Therefore, this value does not warrant reporting to the provider as it does not indicate an immediate concern.
Choice B reason : A prothrombin time (PT) of 45 seconds is significantly higher than the normal range of 11 to 13.5 seconds for individuals not on anticoagulation therapy. For patients on warfarin, the target PT is usually 1.5 to 2 times the normal value, depending on the indication for therapy. However, a PT of 45 seconds suggests a high risk of bleeding and requires immediate medical attention.
Choice C reason : The activated partial thromboplastin time (aPTT) of 36 seconds is within the normal range of approximately 21 to 35 seconds⁸. This result indicates that the blood's intrinsic clotting pathway is functioning within expected parameters and does not need to be reported.
Choice D reason : A platelet count of 190,000/mm is within the normal range, which is typically 150,000 to 450,000 platelets/mm. This value is not concerning and does not need to be reported to the provider.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason : In atrial fibrillation, the heartbeat is known to be irregular and often rapid. This irregularity is due to the disorganized electrical signals in the heart's upper chambers, which cause a fast and chaotic heartbeat. Therefore, when documenting the pulse of a client with atrial fibrillation, the term "irregular" is appropriate.
Choice B reason : "Not palpable" would indicate that the pulse cannot be felt, which is not typically the case with atrial fibrillation. While the pulse may be irregular, it is usually still palpable unless the rate is extremely rapid or associated with other complications.
Choice C reason : "Bounding" refers to a pulse that feels strong and full. This is not characteristic of atrial fibrillation. Instead, the pulse in atrial fibrillation may feel weak and irregular due to the ineffective contraction of the atria.
Choice D reason : "Regular" is not an appropriate term to describe the pulse in a client with atrial fibrillation because the condition is characterized by an irregular heart rhythm. The term would be used for a pulse that has consistent beats at regular intervals, which is not the case in atrial fibrillation.
Correct Answer is C
Explanation
Choice A reason : Guided imagery is a relaxation technique that can help reduce stress and anxiety, but it does not directly address the physiological issues of dehydration and hypotension. While it may be beneficial as a complementary therapy, it is not the primary intervention for a patient suffering from these conditions.
Choice B reason : Elevating the head of the bed is generally recommended for patients who have difficulty breathing or to prevent aspiration, but it is not the standard care for hypotension. In fact, for a hypotensive patient, elevating the legs might be more beneficial to promote venous return to the heart⁹[^20^].
Choice C reason : Increasing fluid intake is the most direct and effective way to treat dehydration. When a patient is hypotensive, it often indicates a low blood volume, which can be improved by increasing fluid intake. This can be done orally if the patient is conscious and able to drink, or intravenously if they are not. The normal range for blood pressure is 90/60 mmHg to 120/80 mmHg, and maintaining adequate hydration helps to ensure blood pressure stays within this range⁸.
Choice D reason : The Valsalva maneuver is a technique used to potentially correct certain types of abnormal heart rhythms, particularly supraventricular tachycardia, and not for treating hypotension or dehydration. It involves increasing intrathoracic pressure by exhaling forcefully with a closed airway, which can have various effects on the cardiovascular system. However, it is not an appropriate intervention for a dehydrated, hypotensive patient⁹[^10^].
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