The nurse is caring for patient with a history of atrial fibrillation who is prescribed warfarin. Sometimes I forget my medication, so l double up doses when I remember " The patient's PT and INR are highly elevated. The nurse anticipates the transfusion of which blood product?

Packed Red Blood Cells (PRBC's)

Platelets

Cryoprecipitate

Fresh Frozen Plasma (FFP)

Answer and Explanation

The Correct Answer is D

A) Packed Red Blood Cells (PRBCs):
Packed Red Blood Cells are typically transfused when there is anemia or significant blood loss leading to low hemoglobin levels. In the case of warfarin overdose or elevated PT/INR, the problem is related to coagulation and not red blood cell count.

B) Platelets:
Platelets are typically transfused when there is thrombocytopenia or a need to address platelet dysfunction (e.g., in patients with bleeding due to low platelet counts). However, the elevated PT and INR in this case are related to the coagulation cascade being inhibited by warfarin, not platelet deficiency.

C) Cryoprecipitate:
Cryoprecipitate is primarily used to replace clotting factors such as fibrinogen, factor VIII, and von Willebrand factor. It is typically transfused in patients with hemophilia or bleeding disorders related to low fibrinogen levels. However, in this case, the issue is related to warfarin-induced inhibition of clotting factors (specifically the vitamin K-dependent factors: II, VII, IX, and X), not a deficiency in fibrinogen or specific clotting factors addressed by cryoprecipitate.

D) Fresh Frozen Plasma (FFP):
Fresh Frozen Plasma (FFP) is the most appropriate choice for this patient. FFP contains all the coagulation factors, including the vitamin K-dependent factors that warfarin inhibits. When a patient on warfarin presents with elevated PT and INR (which indicates impaired clotting ability), FFP is used to replace the clotting factors and help reverse the effects of warfarin.

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Correct Answer is ["A","D","E"]

Explanation

A) If there is a QRS complex after each P wave:
This is an important consideration when identifying a cardiac rhythm. The P wave represents atrial depolarization, and the QRS complex represents ventricular depolarization. In a normal sinus rhythm, every P wave is followed by a QRS complex, which confirms that the impulse originating in the SA node is being conducted properly through the atrioventricular (AV) node and into the ventricles. The presence of a QRS after every P wave helps confirm normal conduction and rhythm.

B) The rate using only a 3-second strip:
While the heart rate is an essential part of the rhythm assessment, using only a 3-second strip is not the most accurate method for determining the rate. Typically, a 6-second strip is used to estimate the rate, multiplying the number of R-R intervals by 10 to obtain the heart rate. A 3-second strip can be used for quick estimates but may lead to inaccurate calculations of the heart rate.

C) The duration of the U waves:
The U wave is often a normal variant seen in the ECG and is not always present. If it is visible, its duration is typically not a primary focus in rhythm interpretation unless there are concerns about electrolyte imbalances, such as hypokalemia. The U wave is not a core factor to consider when identifying the overall rhythm.

D) If the P waves are present:
The presence of P waves is important for identifying the rhythm, particularly when differentiating between sinus rhythms (normal) and non-sinus rhythms (such as atrial arrhythmias). In normal sinus rhythm, P waves should be present, reflecting atrial depolarization initiated by the SA node. The absence of P waves can indicate atrial fibrillation, atrial flutter, or other arrhythmias.

E) If the P-P and R-R distances are equal:
This is crucial in identifying a regular rhythm. The P-P interval refers to the distance between successive P waves (atrial depolarization), and the R-R interval refers to the distance between successive R waves (ventricular depolarization). In normal sinus rhythm or regular rhythms, both the P-P and R-R intervals should be equal, indicating that the atrial and ventricular rhythms are consistent. If they are unequal, it suggests an irregular rhythm (e.g., atrial fibrillation).

Correct Answer is ["12"]

Explanation

Given:

Ordered dose of Heparin: 20 units/kg

Patient weight: 132 lbs

Concentration of Heparin: 25,000 units/250 mL (100 units/mL)

Step 1: Convert patient weight from pounds to kilograms:

1 pound (lb) = 0.453592 kilograms (kg)

Patient weight in kg = 132 lbs x 0.453592 kg/lb = 59.87424 kg

Step 2: Calculate the total dose of Heparin:

Total dose (units) = Ordered dose (units/kg) x Patient weight (kg)

Total dose (units) = 20 units/kg x 59.87424 kg

Total dose (units) = 1197.4848 units

Step 3: Calculate the volume to be administered:

Volume (mL) = Total dose (units) / Concentration (units/mL)

Volume (mL) = 1197.4848 units / 100 units/mL

Volume (mL) = 11.974848 mL

Step 4: Round to the nearest whole number:

Volume (mL) ≈ 12 mL

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The nurse is caring for patient with a history of atrial fibrillation who is prescribed warfarin. Sometimes I forget my medication, so l double up doses when I remember " The patient's PT and INR are highly elevated. The nurse anticipates the transfusion of which blood product?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

To properly identify a cardiac rhythm, the nurse will obtain the following factors. (SELECT ALL THAT APPLY)

Correct Answer is ["A","D","E"]

Explanation

A patient is to receive a bolus of Heparin 20 units/kg. The patient weighs 132 lbs. The medication is supplied as 25,000 units/250 mL. How many mL will the nurse give? (round to the nearest whole number)

Correct Answer is ["12"]

Explanation

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