Nokea
Which of the following is the nurse most correct to recognize as a direct effect of client hypertension?
- A. Renal dysfunction resulting from atherosclerosis
- B. Anemia resulting from bone marrow suppression
- C. Hyperglycemia resulting from insulin receptor resistance
- D. Emphysema related to poor gas exchange
Correct Answer: A
Rationale: The nurse is most correct to realize high blood pressure damages the arterial vascular system and accelerates atherosclerosis. The effect of the atherosclerosis impairs circulation to the kidney, resulting in renal failure. Neither anemia, hyperglycemia, nor emphysema occurs as a direct effect of hypertension.
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The nurse is working on a busy cardiac unit caring for four hypertensive clients. Which client description would the nurse assess first because the client is at an increased risk for malignant hypertension?
- A. A client with anorexia and history of no health care insurance
- B. A client with liver dysfunction who drinks alcohol daily
- C. A schizophrenic residing at an assisted living facility
- D. A client with chronic asthma who uses a corticosteroid inhaler
Correct Answer: A
Rationale: Accelerated and malignant hypertension can occur in individuals who fail to maintain follow-up or comply with medical therapy. Those individuals who have no health care insurance often are unable to obtain the medical follow-up or afford the cost of medications to treat the hypertensive state. If the hypertension is untreated, symptoms and complication can rapidly follow. The other choices need further assessment but are not the priority.
The nurse is volunteering at a community blood pressure screening. A client, never diagnosed with hypertension, presents with a blood pressure of $158 / 90 \mathrm{~mm} \mathrm{Hg}$. Which assessment question(s) is appropriate for the nurse to ask? Select all that apply.
- A. Have you recently drunk a caffeinated beverage?
- B. Did you have a beer after work?
- C. Do you smoke?
- D. Do you have a friend accompanying you?
- E. Are you married and with children?
Correct Answer: A,C
Rationale: At a community blood pressure clinic, the nurse would assess for common factors for a blood pressure to be elevated. Factors that can affect blood pressures readings include smoking or drinking coffee within 30 minutes of the reading. One beer after work should not affect the blood pressure reading, and some individuals may find it relaxing. Social situations are difficult to assess in a community blood pressure clinic.
The nurse is evaluating the types of medications prescribed for a client's hypertension. Which of the following medication classifications establishes an action on vasoconstrictive hormones in the blood stream?
- A. Beta-blocker
- B. ACE inhibitor
- C. Loop diuretic
- D. Calcium channel blocker
Correct Answer: B
Rationale: The angiotensin-converting enzyme (ACE) inhibitor's primary action is to prevent the conversion of angiotensin I to angiotensin II, a potent vasoconstricting hormone in the blood. A beta-blocker blocks the beta-adrenergic receptors decreasing sympathetic nervous system stimulation. Loop diuretics excrete water from the loop of Henle, reducing circulating blood volume. Calcium channel blockers dilate coronary and peripheral arteries.
The physician is ordering a test for the hypertensive client that will be able to evaluate whether the client has experienced heart damage. Which diagnostic test would the nurse anticipate to determine heart damage?
- A. Blood chemistry
- B. Multiple gated acquisition scan (MUGA)
- C. Chest radiograph
- D. Fluorescein angiography
Correct Answer: B
Rationale: The nurse realizes that undiagnosed (untreated), long-standing hypertension can cause heart damage. The diagnostic test that best determines heart damage is the multiple gate acquisition scan (MUGA). This test is used to detect how efficiently the heart pumps. A blood chemistry determines electrolyte balance. A chest radiograph (chest $x$-ray) can provide details of the heart size through shading on the scan. Fluorescein angiography is an ophthalmologic test revealing leaking retinal blood vessels.
The nurse in an oncology clinic notes that the client being treated has hypertension. What tumor is a predisposing condition for secondary hypertension?
- A. Pheochromocytoma
- B. Wilms' tumor
- C. Astrocytoma
- D. Lymphoma
Correct Answer: A
Rationale: Predisposing conditions include kidney disease, pheochromocytoma (a tumor of the adrenal medulla), hyperaldosteronism (increased secretion of mineralocorticoid by the adrenal cortex), atherosclerosis, use of cocaine or other cardiac stimulants (e.g., weight-control drugs, caffeine), and use of oral contraceptives. Wilms' tumors, astrocytomas, and lymphomas are not predisposing conditions for secondary hypertension.