Advanced Oncology Certified Nurse Practitioner (AOCNP) Certification Practice Test

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What is a potential effect of SVC obstruction on the brain?

Increased cognitive function

Cerebral edema

When considering the effects of superior vena cava (SVC) obstruction on the brain, it is important to understand how impaired venous return can lead to physiological complications. SVC obstruction results in increased central venous pressure, which can cause a backup of blood flow. This backup can lead to increased hydrostatic pressure in the cerebral circulation, resulting in an accumulation of fluid in brain tissue, commonly referred to as cerebral edema. Cerebral edema can manifest as swelling and increased intracranial pressure, which may lead to symptoms such as headache, altered mental status, and in severe cases, neurological deficits. Understanding this relationship is crucial for managing patients with SVC obstruction, especially those with cancer who might be at risk for this condition, either from tumor compression or associated thrombotic events. By recognizing that cerebral edema is a consequence of the obstruction, healthcare professionals can monitor and address the associated symptoms effectively, providing appropriate interventions to reduce intracranial pressure and manage the patient's overall condition.

Restricted airflow

Improved circulation

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