The nurse is providing discharge instructions to a client who has had a permanent pacemaker inserted. The information in the chart indicates that the device is a DDD. What will the nurse explain about this pacemaker?

"A wire is in the left ventricle and will pace when needed."

"There are pacemaker wires in the right atrium and ventricle and will pace as needed."

"The wires are in both ventricles and fires when your heart rate is 50.

"The device is set to fire with each heart beat."

Answer and Explanation

The Correct Answer is B

A.   The pacemaker wire for a DDD device is placed in the right atrium and right ventricle, not the left ventricle.
B.   This is the correct description of a DDD pacemaker, which has wires in both the right atrium and right ventricle to monitor and pace both chambers when needed.
C.   This is incorrect because a DDD pacemaker does not pace both ventricles.
D.   This is inaccurate because a DDD pacemaker does not fire with every heartbeat; it only fires when the heart’s natural electrical activity is insufficient.

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Correct Answer is C

Explanation

A. Hypermagnesemia can cause bradycardia and hypotension, but it is less commonly associated with PVCs. This does not align with the lab results provided.
B. Hypocalcemia can cause arrhythmias, but it is not the most likely cause of PVCs in this case, considering other findings.
C. Hypokalemia (low potassium) is a known cause of PVCs. The patient's potassium level is 2.8 mEq/L, which is significantly low and most likely contributing to the PVCs.
D. Although hyperglycemia can affect cardiac function, it is less commonly linked to PVCs compared to electrolyte imbalances, such as hypokalemia.

A. Cryoprecipitate and red blood cells B. Platelets and fresh frozen plasma C. Packed red blood cells and platelets D. Fresh frozen plasma and cryoprecipitate

Correct Answer is C

Explanation

A. Cryoprecipitate is indicated for low fibrinogen or clotting factor issues, but the client’s primary issue
here is anemia and thrombocytopenia.
B. FFP is used to replace clotting factors. While it could be considered in certain situations, in this case, the primary concern is the severe anemia and thrombocytopenia.
C. This is the most appropriate choice, as the patient has low hemoglobin (anemia) and a very low platelet count, both of which require packed red blood cells and platelets.
D. This combination is typically used for clotting factor issues, not anemia and thrombocytopenia.

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LAB	Result	Normal Range
Potassium	2.8 mEq/L	3.5-5.3mEq/L
Sodium	133 mEq/L	135-145 mEqL
Chloride	90 mEq/L	97-107 mEqL
Glucose	200 mg/dL	70mg/dL to 110mg/dL
Magnesium	2.5 mg/dL	1.6-2.2 mg/dL
Calcium	8.0 mg/dL	8.2-10.2 mg/dL:

			Male: 14- 17.3 g/dL
Hematocrit	26%	24%	Female: 36%-48% Male: 42%-52%
Platelets	35,000mm3	20,000mm3	150,000- 450,000mm3
RBC	4.5 mm3	3mm3	Female: 4.01-5.51 million/mm3 Male: 4.51-

The nurse is providing discharge instructions to a client who has had a permanent pacemaker inserted. The information in the chart indicates that the device is a DDD. What will the nurse explain about this pacemaker?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Correct Answer is C

Explanation

Correct Answer is C

Explanation

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