Which electrocardiographic (ECG) change by a client with chest pain is most important for the nurse to report rapidly to the health care provider?

First-degree atrioventricular block

Inverted P wave

Sinus Tachycardia

ST-segment elevation

Answer and Explanation

The Correct Answer is D

ST-segment elevation on an electrocardiogram (ECG) is a critical finding and should be reported rapidly to the health care provider. It is a hallmark ECG change seen in myocardial infarction (heart attack). When there is myocardial ischemia or injury (such as in a heart attack), the ST segment

elevates above the baseline in the affected leads of the ECG. This elevation indicates that there is an ongoing loss of oxygen and blood supply to a part of the heart muscle.

ST-segment elevation is a medical emergency because it suggests acute coronary syndrome (ACS), which can rapidly progress to a myocardial infarction if not promptly treated. Immediate intervention is needed to restore blood flow to the affected coronary artery and prevent further damage to the heart muscle.

The other options listed (A) First-degree atrioventricular block, (B) Inverted P wave, and (C) Sinus tachycardia, while significant in some situations, do not have the same urgency as ST-segment elevation in the context of chest pain. They may require medical attention, but they do not typically indicate an acute myocardial infarction or an immediate life-threatening condition. ST-segment elevation is a critical finding that requires rapid intervention to preserve heart muscle function and prevent complications.

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Correct Answer is A

Explanation

In a client with chronic kidney disease (CKD), metabolic acidosis is a common acid-base disorder due to impaired excretion of acid and decreased bicarbonate reabsorption in the kidneys. The arterial blood gas values associated with metabolic acidosis in CKD are a low pH (acidemia), low bicarbonate (HCO3-), and normal or low partial pressure of carbon dioxide (PaCO2). Option A fits this pattern, with a pH of 7.25 (acidic), HCO3- of 19 mEq/L (low), and a PaCO2 of 30 mm Hg (within the normal to low range).

Option B shows a pH of 7.30 (acidic) but with a higher bicarbonate level of 26 mEq/L, which is not consistent with metabolic acidosis. The elevated bicarbonate level suggests metabolic alkalosis, which is not expected in a client with CKD.

Option C has a pH of 7.50 (alkaline) with an elevated bicarbonate level of 20 mEq/L and a low PaCO2 of 32 mm Hg. This set of values is indicative of metabolic alkalosis, which is not expected in a client with CKD.

Option D has a pH of 7.55 (alkaline) with an elevated bicarbonate level of 30 mEq/L and a low PaCO2 of 31 mm Hg. This set of values is indicative of metabolic alkalosis, which is not expected in a client with CKD.

A. Dysrhythmias B. Anxiety and fear C. Metabolic acidosis D. Medication side effects

Correct Answer is A

Explanation

During the 48 hours after a myocardial infarction (MI), the highest priority for monitoring the patient is for dysrhythmias. After an MI, the heart's electrical system can be disrupted, leading to various types of abnormal heart rhythms (dysrhythmias). Dysrhythmias can be life-threatening and require prompt recognition and intervention.

Other options:

B) Anxiety and fear: Anxiety and fear are common emotional responses after an MI, but they are not the highest priority for monitoring during the immediate post-MI period. Emotional support and counseling are essential, but they do not require continuous monitoring.

C) Metabolic acidosis: Metabolic acidosis is not a common complication of an acute MI. It may occur in certain situations, such as when there is inadequate perfusion to tissues, but it is not the highest priority during the immediate post-MI period.

D) Medication side effects: Monitoring for medication side effects is important but is not the highest priority during the immediate post-MI period. Many patients will receive medications to manage pain, reduce clot formation, and stabilize their heart function. The nurse should monitor for side effects but not as a higher priority compared to dysrhythmias.

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Which electrocardiographic (ECG) change by a client with chest pain is most important for the nurse to report rapidly to the health care provider?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is reviewing the arterial blood gas values of a client who has chronic kidney disease. Which of the following sets of values should the nurse expect?

Correct Answer is A

Explanation

During the 48 hours after a myocardial infarction (MI), a nurse should assign the highest priority to monitoring the patient for what complication?

Correct Answer is A

Explanation

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