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 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.

A. Second degree AV block- Mobitz II B. Sinus bradycardia with first degree AV block C. Second degree AV block- Mobitz I D. Third degree heart block

Correct Answer is C

Explanation

A. Mobitz II is a type of second-degree AV block characterized by constant PR intervals and sudden dropped QRS complexes (i.e., the PR interval does not lengthen progressively). This is a more serious block because the dropped beats are unpredictable and could lead to complete block.
B. Sinus bradycardia is a slower-than-normal heart rate (usually less than 60 beats per minute) that originates from the sinus node. First-degree AV block is characterized by a prolonged PR interval, but unlike second-degree block, there are no dropped QRS complexes.
C. Mobitz I (Wenckebach) is a second-degree AV block where the PR interval gradually lengthens with each successive beat until a QRS complex is dropped. After the dropped beat, the cycle repeats. This is a relatively benign block and often resolves without intervention, though it requires monitoring.
D. Third-degree heart block (also known as complete heart block) occurs when there is no communication between the atria and ventricles. The atria and ventricles beat independently of each other. There are no relationship between the P waves and QRS complexes, and the ventricular rate is typically slower than the atrial rate.

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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

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Correct Answer is C

Explanation

The nurse is caring for a client in the coronary care unit and the monitor depicts the rhythm shown below. What is the nurse’s interpretation of this rhythm?

Correct Answer is C

Explanation

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

The nurse administers atropine 0.5 mg IV to a client. Which action should be performed after the client has received this medication?

A client presents to the Emergency Department (ED) complaining of a "racing" heart and nervousness. The client also admits to a history of cocaine abuse. The cardiac monitor displays the rhythm below. Which nursing intervention should the nurse perform?

The nurse is caring for a client diagnosed with disseminated intravascular coagulation (DIC). When completing an assessment for decreased perfusion from clotting, the nurse would observe for which manifestation?

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The nurse is planning care for a client diagnosed with heart failure who will soon be discharged home. What should be included in the teaching plan? The client will:

The client problem of Activity Intolerance related to decrease in cardiac reserve is identified for a client with chronic heart failure. Which intervention should the nurse include in the plan of care related to this problem?

Review the monitor tab and the Labs tab

Monitor