A patient was involved in a fight and was hit in the head with a chair. The emergency room physician noted the following signs and symptoms:
A patient appears confused and does not remember being in a fight: the patient was brought in by a friend. The patient is having problems concentrating, dizziness, and flat affect. Which condition is indicated by the physician's findings?
Cerebral ischemia
Cerebral edema
Cerebral concussion
Cerebral hemorrhage
The Correct Answer is C
A cerebral concussion is a mild traumatic brain injury that occurs when a blow to the head causes the brain to move rapidly inside the skull, resulting in temporary changes in brain function. A concussion can cause confusion, memory loss, impaired concentration, dizziness, headache, nausea, blurred vision, and mood changes. Most concussions resolve within a few days or weeks with rest and monitoring.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A hypertensive crisis is defined as a systolic blood pressure (top number) of 180 mm Hg or higher or a diastolic blood pressure (bottom number) of 120 mm Hg or higher. A patient with a blood pressure of 190/137 meets this criterion and has a significantly elevated risk of organ damage and cardiovascular complications. A usual blood pressure of 170/110 indicates that the patient has chronic hypertension, which is a risk factor for hypertensive crisis.
Correct Answer is C
Explanation
The renin-angiotensin system (RAS) is a hormonal system that regulates blood pressure and fluid balance. When blood pressure is low, the kidneys secrete renin, which converts angiotensinogen into angiotensin I, which is then converted into angiotensin II by angiotensin-converting enzyme (ACE). Angiotensin II is a potent vasoconstrictor that narrows blood vessels and increases blood pressure. It also stimulates the release of aldosterone, which increases sodium and water retention and further raises blood pressure. When the RAS is overactivated, it can lead to a hypertensive crisis, which is a severe elevation of blood pressure that can damage organs and cause stroke, heart attack, or kidney failure.
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