Review the monitor tab and the Labs tab

Monitor

Labs

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:

The nurse observes the rhythm below for a client on the telemetry unit. Which laboratory value result would the nurse suspect contributed to the development of this dysrhythmia?

Sodium

Magnesium

Calcium

Potassium

Answer and Explanation

The Correct Answer is B

A.   Sodium is crucial for maintaining normal cellular function, especially for nerve impulses and muscle contractions. However, sodium imbalances typically affect the general function of the heart, and sodium abnormalities are not commonly associated with torsades de pointes, which is a type of polymorphic ventricular tachycardia.
B.   Magnesium plays a critical role in the electrical stability of the heart and helps regulate potassium and calcium channels, which are involved in the cardiac action potential. Hypomagnesemia (low magnesium) is a well-known risk factor for torsades de pointes, a specific type of polymorphic ventricular tachycardia that is associated with QT interval prolongation. In this case, the magnesium level is 2.5 mg/dL, which is above the normal range (1.6-2.2 mg/dL), suggesting hypermagnesemia.
C.   Calcium is vital for proper muscle function, including the heart muscle, and is essential for electrical conduction. Hypocalcemia (low calcium) can lead to QT interval prolongation, which in turn increases the risk for arrhythmias such as torsades de pointes. However, in this case, the calcium level is 8.0 mg/dL, which is only slightly below the normal range (8.2-10.2 mg/dL), making calcium a less likely primary contributor to torsades de pointes in this situation.
D.   Potassium plays a crucial role in regulating the resting membrane potential and action potentials in cardiac cells. Hypokalemia (low potassium) can lead to QT prolongation and increase the risk of arrhythmias, including torsades de pointes. However, in this case, the potassium level is 2.8 mEq/L, which is low (normal range: 3.5-5.3 mEq/L), and hypokalemia is more commonly associated with arrhythmias such as torsades de pointes than hyperkalemia (high potassium).

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Correct Answer is D

Explanation

A. The 12-lead EKG might be unnecessary right now, especially since the client has no other alarming symptoms. Bumetanide is also not indicated for nausea or tachycardia in this scenario.
B. There is no clear indication that the nausea is related to acid reflux or GI distress that would justify pantoprazole.
C. The tachycardia could be physiological, and treating it with a beta-blocker is unnecessary unless there is a more concerning underlying cause (like heart failure or ischemia). The priority here is not pharmacological intervention but monitoring the client's overall condition.
D. This action allows for appropriate monitoring of the client's condition. Sinus tachycardia may resolve on its own without intervention, and the client doesn't exhibit severe symptoms requiring immediate pharmacologic treatment.

A. Increased respiratory race B. Increased temperature C. Increased heart rate D. Increased blood pressure E. Increase hematocrit

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

Explanation

A. Increased respiratory rate - Fluid overload can lead to pulmonary edema, which causes difficulty breathing and an increased respiratory rate.
B. Increased temperature - Fluid overload does not typically cause a temperature increase. A fever may indicate infection rather than fluid overload.
C. Increased heart rate - The body compensates for fluid overload by increasing the heart rate to maintain cardiac output.
D. Increased blood pressure - Fluid overload leads to increased blood volume, which results in elevated blood pressure.
E. Increase hematocrit - Hematocrit usually decreases with fluid overload, as it is diluted by the extra fluid volume.

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			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-

Review the monitor tab and the Labs tab Monitor

Labs

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Naxlex Comprehensive Predictor Exams

The nurse is evaluating the following rhythm strip on a client in the telemetry unit. The client is alert and oriented but complains of slight nausea after eating breakfast. What is the nurse's best action?

Correct Answer is D

Explanation

A nurse is assessing a client who has fluid overload. Which of the following findings should the nurse expect? (Select all that apply.)

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

Explanation

The nurse is performing an admission assessment of an older adult client with a history of chronic heart failure. The client exhibits +2 pitting edema of the ankles and bibasilar crackles. Based on these findings what action should the nurse take next?

The nurse is caring for a client receiving a heparin infusion for disseminated intravascular coagulation (DIC). Which of the following lab results would indicate a sub-therapeutic level? An activated partial thromboplastin time (aPTT) of :……. (normal value: 25-35 seconds)

The nurse would assess the client diagnosed with disseminated intravascular coagulation (DIC) for which manifestation of the disorder?

The client diagnosed with acute heart failure is prescribed an infusion of dopamine at a low dose. Which assessment parameter should the nurse use to best evaluate the effectiveness of this medication?

Which physical assessment findings would the nurse anticipate for a client with rapid atrial flutter?

A patient is to receive a continuous infusion of Diltiazem at 5 mg/hr for Atrial fibrillation. The medication is supplied 125 mg of Diltiazem in 125 mL of Iv fluid. At what rate should the nurse set the IV pump? (round to the nearest whole number)

Review the monitor tab and the Labs tab

Monitor