A nurse is reviewing the results of electrocardiography monitoring for a client who has atrial fibrillation. Which of the following findings should the nurse expect?

1:1 ratio of P to QRS waves

Absence of P waves

Prolonged PR interval

Prolonged QT interval

Answer and Explanation

The Correct Answer is B

A. 1:1 ratio of P to QRS waves: Atrial fibrillation is characterized by chaotic atrial electrical activity, leading to the absence of distinct P waves. A 1:1 ratio of P to QRS waves is seen in normal sinus rhythm, not atrial fibrillation.

B. Absence of P waves: Atrial fibrillation causes rapid, disorganized atrial depolarization, resulting in the loss of identifiable P waves on ECG. Instead, fibrillatory waves are seen, and the ventricular response is irregularly irregular.

C. Prolonged PR interval: The PR interval represents the time between atrial and ventricular depolarization. In atrial fibrillation, there is no coordinated atrial depolarization, making the PR interval unmeasurable rather than prolonged.

D. Prolonged QT interval: A prolonged QT interval is associated with conditions like electrolyte imbalances, certain medications, and congenital syndromes, but it is not a typical feature of atrial fibrillation.

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Correct Answer is A

Explanation

A. Desmopressin acetate: This synthetic form of antidiuretic hormone (ADH) reduces excessive urine output by increasing water reabsorption in the kidneys. It helps restore fluid balance and prevent dehydration in diabetes insipidus. Without treatment, continued polyuria can lead to severe dehydration and electrolyte imbalances.

B. Spironolactone: This potassium-sparing diuretic promotes sodium and water excretion by blocking aldosterone receptors. It is used to treat conditions like heart failure and hyperaldosteronism but would worsen polyuria and dehydration in diabetes insipidus.

C. Furosemide: This loop diuretic inhibits sodium and chloride reabsorption in the kidneys, leading to increased urine output. Administering it to a client with diabetes insipidus would further aggravate excessive fluid loss and the risk of dehydration.

D. Dopamine: This vasopressor is used to improve cardiac output and blood pressure in conditions like shock. It does not affect ADH levels or urine concentration and would not help manage the excessive diuresis seen in diabetes insipidus.

A. Inspect the mouth once each week for sores. B. Use text or pictures to communicate needs postoperatively. C. Rinse with an alcohol-based mouthwash instead of brushing. D. Increase intake of dense, high-fiber foods.

Correct Answer is B

Explanation

A. Inspect the mouth once each week for sores: Frequent oral assessments are necessary, especially after a partial glossectomy, to monitor for infection, healing complications, or signs of malignancy recurrence. Checking only once per week is insufficient for early detection of issues.

B. Use text or pictures to communicate needs postoperatively: A partial glossectomy can impair speech, making communication difficult. Using alternative methods such as writing, text, or pictures helps ensure effective communication, especially in the immediate postoperative period.

C. Rinse with an alcohol-based mouthwash instead of brushing: Alcohol-based mouthwashes can cause irritation and delay healing. Instead, gentle oral hygiene with a soft toothbrush and non-alcoholic rinses like saline or chlorhexidine is recommended to maintain cleanliness without irritation.

D. Increase intake of dense, high-fiber foods: Soft, easy-to-swallow foods are preferred after a partial glossectomy to prevent irritation and facilitate healing. Dense, high-fiber foods can be difficult to chew and may cause discomfort, increasing the risk of aspiration or delayed wound healing.

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A nurse is reviewing the results of electrocardiography monitoring for a client who has atrial fibrillation. Which of the following findings should the nurse expect?

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Naxlex Comprehensive Predictor Exams

A nurse is caring for a client who has diabetes insipidus and has had a urinary output of 3,000 mL in the past 12 hr. Which of the following medications should the nurse expect to administer to the client?

Correct Answer is A

Explanation

A nurse is providing teaching to a client who is postoperative following a partial glossectomy. Which of the following instructions should the nurse include in the teaching?

Correct Answer is B

Explanation

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