Patient MK is admited with Atrial Fibrillation an irregular heart rhythm. She is also complaining of muscle cramps to her legs and that she started a new diuretic last week. What lab value are you most likely to find on her Complete Metabolic Panel?

Mg2 – 20 mEq/L

Na+ - 123 mEq/L

Ca2 – 10.0 mg/dl

K+ - - 3.1 mEq/L

Answer and Explanation

The Correct Answer is D

Atrial fibrillation is a common arrhythmia, and diuretics are often used in the management of patients with this condition to help control ﬂuid balance. However, diuretics can cause electrolyte imbalances, especially hypokalaemia (low potassium levels), which can lead to muscle cramps and other complications.

A Complete Metabolic Panel (CMP) is a blood test that measures various electrolytes, glucose, and other important components. Among the options given, the most likely lab value to be abnormal in Patient MK's case is a low level of potassium (K+), which is consistent with her symptoms and diuretic use. Option d, K+ -

1. mEq/L, is the correct option as it represents a low level of potassium, which is defined as a value less than 3.5 mEq/L.

Option a, Mg2 – 20 mEq/L, represents high magnesium levels, which are not typically associated with diuretic use or muscle cramps. Option b, Na+ - 123 mEq/L, represents low sodium levels, which are less likely to occur with diuretic use, and are typically associated with other conditions. Option c, Ca2 – 10.0 mg/dl, represents normal calcium levels and is not typically aﬀected by diuretic use.

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Correct Answer is B

Explanation

Crackles, also known as rales, are discontinuous sounds that are typically heard during inspiration in patients with heart failure. These sounds are produced by the sudden opening of small airways and alveoli that are filled with ﬂuid or collapsed due to pulmonary congestion. The sound can be described as similar to the sound of rubbing hair between fingers or the sound of Velcro being pulled apart.

Rhonchi are continuous, low-pitched sounds that are typically heard during expiration and are caused by the movement of air through narrowed airways, such as in patients with chronic obstructive pulmonary disease (COPD). Stridor is a high-pitched, continuous sound that is typically heard during inspiration and indicates upper airway obstruction, which can be life-threatening. Neither rhonchi nor stridor are typically heard in patients with heart failure.

Therefore, based on the patient's history and symptoms, the most likely type of breathing sound to be heard on auscultation is crackles/rales.

A. Hypocalcemia B. Hyperkalemia C. Hypernatremia D. Hyponatremia

Correct Answer is D

Explanation

Explanation: The normal range of sodium (Na+) in the blood is 135-145 mEq/L. The patient's sodium level of 121 mEq/L is below the normal range, indicating a low sodium level, which is called hyponatremia.

Hyponatremia is a common electrolyte imbalance that can be caused by a variety of factors, including excessive sweating, vomiting, diarrhea, certain medications, kidney disease, and hormonal imbalances. It can cause symptoms such as nausea, headache, confusion, seizures, and coma, and it can be a medical emergency if the sodium level drops rapidly or severely.

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Patient MK is admited with Atrial Fibrillation an irregular heart rhythm. She is also complaining of muscle cramps to her legs and that she started a new diuretic last week. What lab value are you most likely to find on her Complete Metabolic Panel?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A patient presents to the Emergency Room with swollen legs and shortness of breath. He tells you that he has a history of heart failure which causes the ﬂuid to build up m his legs and lungs. When you listen to his lung sounds you are most likely to hear which type of breathing sounds?

Correct Answer is B

Explanation

Your patient has a CMP drawn to determine their electrolytes. Only part of the values have resulted including the Na+ which is 121 mEq/l. What type of electrolyte imbalance is the patient having?

Correct Answer is D

Explanation

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