A nurse is assessing a client who is taking losartan.
Which of the following findings should the nurse identify as an adverse effect of this medication?
Hypertension.
Double vision.
Dizziness.
Hyperactivity.
The Correct Answer is C
Choice A rationale
Losartan is an angiotensin II receptor blocker (ARB) which works by preventing angiotensin II from binding to its receptors in vascular smooth muscle, thereby causing vasodilation and lowering blood pressure. Hypertension is the condition losartan is prescribed to treat, not an adverse effect, because its mechanism directly counteracts the vasoconstrictive effects of angiotensin II. The intended therapeutic effect is a reduction in systemic vascular resistance and blood pressure.
Choice B rationale
Double vision, also known as diplopia, is not a recognized common or significant adverse effect of losartan. The mechanism of action of losartan primarily targets the renin-angiotensin-aldosterone system (RAAS), influencing blood pressure regulation and fluid balance, not directly affecting the central nervous system or ocular motor function. This symptom would be more indicative of neurological or ophthalmological issues unrelated to the medication's primary action.
Choice C rationale
Dizziness is a common adverse effect of losartan. This is a direct consequence of its therapeutic action, which is to lower blood pressure. The resulting vasodilation and reduced blood pressure can lead to orthostatic hypotension, causing feelings of lightheadedness or dizziness, especially when a person changes positions, like standing up. The brain's reduced perfusion pressure triggers this sensation as a physiological response.
Choice D rationale
Hyperactivity is not an expected adverse effect of losartan. The medication primarily affects the cardiovascular system by modulating the RAAS to lower blood pressure. It does not have known stimulant properties that would lead to increased energy, restlessness, or hyperactivity. Such a finding would likely be attributed to other factors or a different underlying condition, not the pharmacological action of this medication. *.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is []
Explanation
Condition: Elder maltreatment 2 actions: Initiate a referral to adult protective services; Administer prescribed pain medication 2 parameters: Frequency and severity of bruises; Nutritional intake and weight
Rationale for correct condition The client’s physical signs (multiple bruises in various stages, unclean appearance), social indicators (dependency, financial control, food insecurity), and behavioral changes in the presence of the caregiver strongly suggest elder abuse. Elder maltreatment includes physical, emotional, financial, and neglectful harm. An 82-year-old with a BMI of 18.3 shows undernutrition. His improved demeanor away from the child reflects psychological coercion. Bruises in different stages may indicate repeated trauma over time.
Rationale for correct actions Referral to adult protective services ensures legal and social intervention and facilitates multidisciplinary evaluation for safety. Reporting is mandated and protects the client from further harm. Administering pain medication addresses acute injury (fracture of right radius) and helps restore comfort. Effective pain management is crucial for mobility and assessment of additional injuries.
Rationale for correct parameters Monitoring bruising patterns helps identify ongoing abuse and quantify recovery or new trauma. Repeated injuries in various healing stages are hallmark signs. Nutritional intake and weight reflect neglect; insufficient food intake leads to weight loss and reduced immune function. Tracking BMI and calorie intake can guide long-term recovery and support.
Rationale for incorrect conditions Osteoporosis-related fracture would more likely occur with minimal trauma and does not explain social neglect or emotional signs. Accidental fall may be plausible but lacks explanation for systemic neglect and coercion. Peripheral neuropathy doesn’t explain acute arm pain or psychosocial signs of neglect.
Rationale for incorrect actions Encouraging activity is inappropriate during acute fracture recovery and potential abuse. Bone density scans assess fragility but don’t address safety risks. Nutritional supplements may help but don’t resolve underlying maltreatment or acute injury.
Rationale for incorrect parameters Bone density is not immediately relevant and doesn't reflect maltreatment. Blood pressure fluctuations are not present and don’t indicate abuse. Grip strength cannot be assessed accurately with an arm fracture and isn't useful for abuse evaluation.
Take-home points • Elder maltreatment includes physical harm, neglect, emotional abuse, and financial exploitation • Victims may show improved responsiveness when abuser is absent • Multidisciplinary intervention via adult protective services is critical • Differentiation from accidental injury ensures proper protection and care
Correct Answer is C
Explanation
Choice A rationale
Losartan is an angiotensin II receptor blocker (ARB) which works by preventing angiotensin II from binding to its receptors in vascular smooth muscle, thereby causing vasodilation and lowering blood pressure. Hypertension is the condition losartan is prescribed to treat, not an adverse effect, because its mechanism directly counteracts the vasoconstrictive effects of angiotensin II. The intended therapeutic effect is a reduction in systemic vascular resistance and blood pressure.
Choice B rationale
Double vision, also known as diplopia, is not a recognized common or significant adverse effect of losartan. The mechanism of action of losartan primarily targets the renin-angiotensin-aldosterone system (RAAS), influencing blood pressure regulation and fluid balance, not directly affecting the central nervous system or ocular motor function. This symptom would be more indicative of neurological or ophthalmological issues unrelated to the medication's primary action.
Choice C rationale
Dizziness is a common adverse effect of losartan. This is a direct consequence of its therapeutic action, which is to lower blood pressure. The resulting vasodilation and reduced blood pressure can lead to orthostatic hypotension, causing feelings of lightheadedness or dizziness, especially when a person changes positions, like standing up. The brain's reduced perfusion pressure triggers this sensation as a physiological response.
Choice D rationale
Hyperactivity is not an expected adverse effect of losartan. The medication primarily affects the cardiovascular system by modulating the RAAS to lower blood pressure. It does not have known stimulant properties that would lead to increased energy, restlessness, or hyperactivity. Such a finding would likely be attributed to other factors or a different underlying condition, not the pharmacological action of this medication. *.
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