ATI RN
ATI Pathophysiology Final Exam
1. A client with atrial fibrillation is at risk for which of the following complications?
- A. Deep vein thrombosis (DVT)
- B. Pulmonary embolism
- C. Hypertensive crisis
- D. Myocardial infarction
Correct answer: B
Rationale: Corrected Rationale: A client with atrial fibrillation is at increased risk of thromboembolism due to blood stasis in the atria. This can lead to the formation of blood clots, which may travel to the lungs and cause a pulmonary embolism. Pulmonary embolism is a serious complication of atrial fibrillation. Choices A, C, and D are incorrect because while atrial fibrillation can lead to complications such as stroke or heart failure, it is specifically associated with an increased risk of pulmonary embolism due to the clot formation associated with the condition.
2. Interpret the following arterial blood gas results: PH = 7.30; PaCO2 = 55 mmHg; HCO3 = 24 mEq/L
- A. Respiratory acidosis
- B. Metabolic acidosis
- C. Respiratory alkalosis
- D. Metabolic alkalosis
Correct answer: A
Rationale: The correct answer is A: Respiratory acidosis. In respiratory acidosis, there is an accumulation of CO2 in the blood, leading to a decrease in pH. The elevated PaCO2 of 55 mmHg in the given results indicates hypoventilation, causing respiratory acidosis. Choices B, C, and D are incorrect because the provided data does not show metabolic acidosis, respiratory alkalosis, or metabolic alkalosis.
3. An 8-year-old boy has been diagnosed with a sex hormone deficiency and has begun a course of treatment with testosterone. What change in the boy's health status would necessitate a stop to the course of treatment?
- A. Excessive growth in height
- B. Signs of puberty
- C. Recurrent urinary tract infections
- D. Increased blood pressure
Correct answer: B
Rationale: In an 8-year-old boy with a sex hormone deficiency being treated with testosterone, the appearance of signs of puberty would necessitate stopping the treatment. Testosterone therapy in this case aims to supplement the deficient sex hormones but should not trigger premature puberty. Excessive growth in height (choice A) is not a typical reason to stop testosterone therapy. Recurrent urinary tract infections (choice C) and increased blood pressure (choice D) are not directly related to testosterone therapy in this context.
4. What condition can be caused by an excessive amount of growth hormone released by the pituitary gland in childhood?
- A. Acromegaly
- B. Gigantism
- C. Syndrome of inappropriate antidiuretic hormone
- D. Dwarfism
Correct answer: B
Rationale: Gigantism is the correct answer. It is a condition caused by excessive growth hormone release before the epiphyseal plates close, leading to abnormal growth. Acromegaly (choice A) is caused by excess growth hormone after the epiphyseal plates close, resulting in enlargement of bones and tissues. Syndrome of inappropriate antidiuretic hormone (choice C) is characterized by the excessive release of antidiuretic hormone, leading to water retention and dilutional hyponatremia. Dwarfism (choice D) is a condition characterized by significantly below-average height.
5. A patient who was frequently homeless over the past several years has begun a drug regimen consisting solely of isoniazid (INH). What is this patient's most likely diagnosis?
- A. Active tuberculosis
- B. Latent tuberculosis
- C. Mycobacterium avium complex
- D. Human immunodeficiency virus
Correct answer: A
Rationale: The correct answer is A: Active tuberculosis. Given the patient's history of homelessness and initiation of isoniazid (INH) treatment, the most likely diagnosis is active tuberculosis. Isoniazid is a first-line medication used in the treatment of active tuberculosis. Latent tuberculosis (choice B) would not typically necessitate treatment with isoniazid alone. Mycobacterium avium complex (choice C) is not typically treated with isoniazid alone. Human immunodeficiency virus (choice D) is a risk factor for developing tuberculosis but is not the primary diagnosis in this patient scenario.
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