A client recovering from cardiac surgery experiences a dysrhythmia, noted on the telemetry monitor. Which assessment finding is most likely to have contributed to the development of the dysrhythmia?

Reference Range:

Total Calcium [8.4 to 10.6 mg/dL (2.10 to 2.50 mmol/L)]

Sodium [136 to 145 mEq/L (136 to 145 mmol/L)]

Potassium (K+) [3.5 to 5.0 mEq/L (3.5 to 5.0 mmol/L)]

Calcium level 7.2 mg/dL (1.8 mmol/L).

Potassium level 3.8 mg/dl. (3.8 mmol)

Sodium level 140 mEq/L (140mmol/L).

Oxygen saturation level 97%.

Answer and Explanation

The Correct Answer is A

A.   This calcium level is below the normal reference range (8.4 to 10.6 mg/dL or 2.10 to 2.50 mmol/L), indicating hypocalcemia. Calcium plays a crucial role in cardiac muscle contraction and electrical conduction. Low calcium levels can lead to various cardiac dysrhythmias, including prolonged QT intervals and increased risk of ventricular arrhythmias.

B.   This potassium level falls within the normal range (3.5 to 5.0 mEq/L or 3.5 to 5.0 mmol/L). Potassium is essential for maintaining normal cardiac rhythm, but a level of 3.8 mg/dL is not abnormal and, therefore, is less likely to be the cause of a dysrhythmia compared to abnormal levels.
C.   This sodium level is within the normal reference range (136 to 145 mEq/L or 136 to 145 mmol/L). Sodium levels typically do not directly cause dysrhythmias unless they are extremely high or low, which is not the case here. Thus, a sodium level of 140 mEq/L is not likely to be the primary contributor to the dysrhythmia.
D.   This oxygen saturation level is considered normal (95% to 100%). While oxygenation is critical for overall heart function and can influence cardiac health, a saturation level of 97% is not likely to be a direct cause of a dysrhythmia, especially if it falls within the normal range.

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Free Nursing Study Resources

Correct Answer is C

Explanation

A. An indwelling urinary catheter is generally used for monitoring urine output in patients with urinary issues or those who are unable to void. It is not the first-line intervention for a client with symptoms suggesting a possible bowel obstruction or gastrointestinal complication. While monitoring urine output may be important, it does not address the immediate concern of the client’s gastrointestinal symptoms.
B. An abdominal x-ray can help diagnose conditions such as bowel obstruction, ileus, or other abdominal issues by visualizing the presence of air-fluid levels or distended bowel loops. While this diagnostic step is important, it should follow interventions that might provide immediate symptomatic relief or help manage the suspected condition.
C. Inserting an NGT and attaching it to low intermittent suction is a critical intervention for managing symptoms of bowel obstruction or severe gastrointestinal distress. The dark brown, foul-smelling vomit and hyperactive bowel sounds suggest that the client might have a bowel obstruction or significant gastrointestinal complication. An NGT can help decompress the stomach, relieve pressure, reduce vomiting, and prevent further gastrointestinal complications.
D. While providing analgesics for pain and fever is important for overall symptom management, it does not address the immediate cause of the client’s symptoms. The focus should be on diagnosing and managing the underlying issue causing the symptoms, such as a bowel obstruction, rather than just treating pain or fever.

A. Place pillows around the bed rails to provide padding. B. Watch the seizure activity and document the time and client movement. C. Manually ventilate the client with a bag-valve mask (BVM). D. Stop the IV fluids. E. Increase the supplemental oxygen to 10 L/minute via nasal cannula. F. Begin chest compressions.

Correct Answer is ["B","C","E"]

Explanation

A. This is important to prevent injury but is not the priority at this time.
B. This is important for monitoring the seizure progression and for providing information to the healthcare provider. However, it should be done while simultaneously performing the more critical interventions of ventilation and oxygenation.
C. This is the highest priority as the client is experiencing respiratory failure with a respiratory rate of 4 breaths/minute. Providing artificial ventilation is crucial to oxygenate the patient.
D. This is not necessary at this point and may not be feasible during the emergency situation.
E. While not as immediate as BVM ventilation, increasing oxygen delivery is essential to improve oxygenation levels.
F. Begin chest compressions: Chest compressions are indicated for cardiac arrest, not respiratory failure.

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Naxlex Comprehensive Predictor Exams

Correct Answer is C

Explanation

Exhibits The nurse identifies that the client is having a tonic clonic seizure. The oxygen saturation is 40% and the respiratory rate is 4 breaths/minute. The nurse calls for help and 2 other nurses enter the room. Which 3 interventions should be performed first?

Correct Answer is ["B","C","E"]

Explanation

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