When using an ECG rhythm strip to quickly estimate the ventricular rate for a client, the nurse should:

count the number of large squares in the R-R interval and divide by 30C

print a 1-minute ECG strip and count the number of ORS complexes,

count the number of QRS complexes in 6 seconds and multiply by 10.

calculate the number of small squares between one QRS complex and the next one and divide by 1500.

Answer and Explanation

The Correct Answer is C

A.   Counting the number of large squares between R-R intervals and dividing by 30 is not the correct method for estimating the ventricular rate on an ECG strip.
B.   Printing a 1-minute ECG strip and counting the QRS complexes (option B) is accurate but unnecessary for a quick estimation.
C.   The most common and efficient method for estimating the ventricular rate quickly is to count the number of QRS complexes in a 6-second strip (often marked by two dashed lines) and multiply by 10. This gives an estimate of the heart rate per minute.
D.   Counting the number of small squares between QRS complexes and dividing by 1500 is the most accurate method but requires more time and precision than counting QRS complexes in 6 seconds.

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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-

When using an ECG rhythm strip to quickly estimate the ventricular rate for a client, the nurse should:

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Correct Answer is C

Explanation

Correct Answer is C

Explanation

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