What is a common sign of digoxin toxicity?
Vomiting.
Tachycardia.
Bradypnea.
Seizures.
The Correct Answer is A
The correct answer is Choice A.Choice A rationale: Vomiting is a common sign of digoxin toxicity. It occurs due to the drug's effects on the gastrointestinal system, which can lead to nausea and vomiting as the body attempts to expel the toxin. This symptom is particularly significant as it can indicate elevated digoxin levels that may require medical intervention.Choice B rationale: Tachycardia, or an increased heart rate, can occur with digoxin toxicity; however, it is more commonly associated with inadequate therapeutic levels rather than toxicity itself. Digoxin usually causes bradycardia (a slower heart rate) when at therapeutic levels, making tachycardia less indicative of toxicity.Choice C rationale: Bradypnea, or slow breathing, is not a typical sign of digoxin toxicity. While respiratory issues can arise from various conditions, they are not specifically linked to digoxin levels. Monitoring respiratory rate is essential in clinical settings but does not directly correlate with digoxin toxicity.Choice D rationale: Seizures are not a common sign of digoxin toxicity. While severe cases might lead to neurological symptoms due to electrolyte imbalances or other complications, seizures are not typically associated with digoxin overdose. Instead, they may suggest other underlying issues requiring evaluation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
A goiter refers to the enlargement or hypertrophy of the thyroid gland. This can occur due to various reasons, such as iodine deficiency, autoimmune disorders like Hashimoto's thyroiditis, or Graves' disease (which is associated with hyperthyroidism). The thyroid gland produces hormones that regulate metabolism and growth, and when it becomes enlarged, it can lead to visible swelling in the neck.
Choice B rationale:
The posterior pituitary gland is responsible for the release of hormones like vasopressin (antidiuretic hormone) and oxytocin. A goiter is not associated with the posterior pituitary gland. Issues with the posterior pituitary can lead to problems with water balance and uterine contractions, but not thyroid enlargement.
Choice C rationale:
The adrenal glands are responsible for producing hormones like cortisol and adrenaline. While adrenal disorders can lead to various hormonal imbalances, a goiter is not related to adrenal gland function. Adrenal issues might cause symptoms like fatigue, weight changes, and blood pressure irregularities.
Choice D rationale:
The anterior pituitary gland produces hormones that regulate the functions of other endocrine glands, including the thyroid gland. However, a goiter is not directly associated with the anterior pituitary. The anterior pituitary's malfunction can result in disorders like growth hormone deficiency or Cushing's disease, but not thyroid enlargement.
Correct Answer is B
Explanation
The correct answer is choice B. Reduce gastric acid production.
Choice A rationale:
Preventing reflux is not the primary purpose of prescribing a histamine receptor antagonist. Histamine receptor antagonists work by reducing gastric acid production, which in turn can help alleviate symptoms of gastroesophageal reflux disease (GERD). They do not directly prevent the physical reflux of stomach contents into the esophagus.
Choice B rationale:
The primary purpose of prescribing a histamine receptor antagonist for an infant diagnosed with gastroesophageal reflux is to reduce gastric acid production. Histamine stimulates acid secretion in the stomach, and these medications (e.g., ranitidine, famotidine) block histamine receptors on stomach cells, leading to decreased acid secretion. This helps reduce the acidity of stomach contents that could contribute to esophageal irritation in GERD.
Choice C rationale:
Preventing hematemesis (vomiting blood) is not a primary action of histamine receptor antagonists. While reducing gastric acid production might indirectly help prevent complications such as bleeding due to irritation and inflammation of the esophagus, it's not the main purpose of these medications.
Choice D rationale:
Increasing gastric acid production is the opposite of the intended effect of histamine receptor antagonists. These medications are specifically used to decrease gastric acid production and provide relief from conditions where excess acid is causing problems, such as GERD.
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