Review the lab results in the chart tab
LAB
|
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: |
A client admitted to the Emergency Department (ED) and the cardiac monitor shows multifocal premature ventricular contractions (PVC's). Initial laboratory findings are as follows. The nurse recognizes that the client's PVC's are most likely caused by:
hypermagnesemia.
hypocalcemia.
hypokalemia,
hyperglycemia
The Correct Answer is C
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["B","C","D"]
Explanation
A. Fluid intake may need to be regulated in heart failure patients, consuming 2500mL of fluids per day may be too high for some patients, depending on their condition and whether they are on fluid restriction. Fluid management should be individualized, and the provider should specify the amount based on the patient's condition.
B. A low-sodium diet is essential for heart failure patients to help reduce fluid retention, decrease blood pressure, and lessen the burden on the heart. The American Heart Association recommends a sodium intake of no more than 2,000-2,300 mg per day for heart failure patients.
C. Rapid weight gain is a sign of fluid retention, which can indicate worsening heart failure. A gain of 2-3 pounds in a single day or 5 pounds in a week should prompt the client to contact their healthcare provider for further evaluation.
D. Shortness of breath with minimal activity can be a sign of worsening heart failure or fluid overload. This symptom should be reported immediately to a healthcare provider for further evaluation and possible adjustments to treatment.
E. Furosemide (a diuretic) is often prescribed to reduce fluid retention but it should not be taken without proper guidance or as a response to symptoms without consulting the healthcare provider. Taking diuretics at the wrong time or in excessive amounts can lead to dehydration and electrolyte imbalances, which could worsen the condition.
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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