Which of the following is a common neurological symptom associated with an arteriovenous malformation (AVM) in the brain?
Muscle weakness in limbs.
Severe headaches.
Shortness of breath.
Nausea and vomiting.
The Correct Answer is B
The scenario requires understanding cerebrovascular anatomy and the pathophysiology of arteriovenous malformations. Arteriovenous malformations involve direct arterial to venous connections without a capillary bed. Application of knowledge regarding increased intracranial pressure and vascular rupture risks is necessary to identify common clinical manifestations.
Choice A rationale
Arteriovenous malformations typically cause localized neurological deficits rather than generalized weakness unless a significant hemorrhage occurs. Focal weakness depends on the specific brain region affected by the steal phenomenon where blood bypasses normal brain tissue through the malformation.
Choice B rationale
Increased intravascular pressure within the malformation and potential small leakages commonly trigger chronic or sudden severe headaches. The abnormal shunting of blood causes vascular distension and irritation of the meninges, which are highly sensitive to pressure changes.
Choice C rationale
Shortness of breath is a respiratory or cardiovascular symptom and is not physiologically linked to intracranial vascular malformations. Arteriovenous malformations are confined to the cerebral vasculature and do not interfere with pulmonary gas exchange or pulmonary circulation.
Choice D rationale
Nausea and vomiting are often secondary symptoms of increased intracranial pressure but are less specific than headaches for arteriovenous malformations. These symptoms typically emerge if the malformation ruptures, causing a sudden, massive increase in pressure within the skull.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
This scenario involves adolescent health promotion and preventative medicine strategies regarding immunization. Knowledge of viral transmission, oncology related to HPV strains, and public health education techniques is required to provide accurate information to guardians about the benefits of early vaccination series.
Choice A rationale
HPV is actually the most common sexually transmitted infection globally. Reassuring parents that it is rare is scientifically inaccurate and compromises preventative health efforts aimed at reducing future cervical, anal, and oropharyngeal cancer risks in the population.
Choice B rationale
The vaccine is most effective when administered before any sexual exposure occurs. Waiting for sexual activity disclosure often results in missing the optimal window for developing maximum antibody titers against high-risk oncogenic viral strains in young adolescents.
Choice C rationale
Both males and females require vaccination to prevent transmission and associated cancers. Males can develop penile or oropharyngeal cancers from HPV, and vaccinating them also provides herd immunity that further protects their future partners from viral exposure.
Choice D rationale
Educating guardians about high prevalence and serious consequences like cancer improves vaccine uptake. Evidence shows that providing factual data on infection rates and long-term health risks helps parents make informed decisions regarding their child’s preventative healthcare.
Correct Answer is B
Explanation
Celiac disease is an autoimmune enteropathy triggered by the ingestion of gluten in genetically predisposed individuals. Clinical management requires strict adherence to a gluten-free diet, necessitates the identification of hidden gluten sources in processed wheat, barley, and rye products.
Choice A rationale
Potatoes are naturally gluten-free tubers containing complex carbohydrates. They do not contain the gliadin proteins that trigger the autoimmune inflammatory response in the small intestine, making them a safe starch replacement for celiac patients.
Choice B rationale
Graham crackers are manufactured using wheat flour, which contains gluten. In celiac disease, gluten ingestion leads to villous atrophy in the small intestine, causing malabsorption, steatorrhea, and nutritional deficiencies, necessitating total avoidance of wheat-based snacks.
Choice C rationale
Wild rice is a gluten-free grain that is safe for patients with celiac disease. Despite its name, it is a grass seed unrelated to wheat, providing essential fiber and nutrients without damaging the intestinal mucosa.
Choice D rationale
Canned pears are typically processed with water or sugar syrup and are naturally gluten-free. Unless cross-contamination occurs during packaging, fruit provides safe vitamins and minerals without containing the harmful proteins found in wheat, barley, or rye.
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