Which early symptoms in a focused assessment by the nurse may indicate the presence of a brain tumor?

Sudden unconsciousness, unresponsiveness, and apnea.

Increased temperature, blood pressure, heart rate, and respirations.

Changes in vision and personality, and headache upon awakening.

Fever, increased white blood cell count, and decreased appetite.

Answer and Explanation

The Correct Answer is C

Choice A reason: Sudden unconsciousness, unresponsiveness, and apnea are not typical symptoms of a brain tumor. They are more likely to indicate a stroke, seizure, or cardiac arrest.

Choice B reason: Increased temperature, blood pressure, heart rate, and respirations are not specific symptoms of a brain tumor. They are more likely to indicate an infection, inflammation, or stress.

Choice C reason: Changes in vision and personality, and headache upon awakening are common symptoms of a brain tumor. They are caused by the pressure of the tumor on the brain tissue and the cranial nerves.

Choice D reason: Fever, increased white blood cell count, and decreased appetite are not typical symptoms of a brain tumor. They are more likely to indicate a systemic infection or malignancy.

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Correct Answer is C

Explanation

Choice A reason: There is total absence of dopamine at receptors in brain cells controlling motor movement, causing Parkinson symptoms to appear, is not the correct statement. Parkinson disease is not caused by a complete lack of dopamine, but by a gradual loss of dopamine-producing neurons in the substantia nigra, a part of the brain that regulates movement. The symptoms of Parkinson disease, such as tremor, rigidity, and bradykinesia, appear when about 80% of the dopamine neurons are lost.

Choice B reason: There is an excess of dopamine production and deficiency of acetylcholine production, is not the correct statement. Parkinson disease is not caused by an excess of dopamine, but by a deficiency of dopamine. Dopamine is a neurotransmitter that helps to control movement, balance, and coordination. Acetylcholine is another neurotransmitter that works in opposition to dopamine. When dopamine is low, acetylcholine becomes dominant and causes abnormal muscle movements.

Choice C reason: There is a decreased production of dopamine and excess of acetylcholine, is the correct statement. Parkinson disease is caused by a decreased production of dopamine and excess of acetylcholine. This creates an imbalance in the neurotransmitters that regulate movement, leading to the characteristic symptoms of Parkinson disease, such as tremor, rigidity, and bradykinesia.

Choice D reason: There is a deterioration of the myelin sheath of the basal ganglia and the person has tremors, is not the correct statement. Parkinson disease is not caused by a deterioration of the myelin sheath, but by a degeneration of the dopamine neurons. Myelin is a fatty substance that covers the axons of the nerve cells and helps to transmit electrical impulses. The basal ganglia are a group of structures in the brain that are involved in movement, learning, and emotion. Tremors are one of the symptoms of Parkinson disease, but they are not the only or the most specific one.

A. attempt to take over the function of the abnormal white blood cells. B. will help to protect them against infection. C. are larger in size than normal white blood cells and clog the bone marrow. D. are not as effective as normal white cells to protect against infection.

Correct Answer is D

Explanation

Choice A reason: This is not a correct explanation for the large number of leukemic white cells. Leukemic white cells are abnormal white blood cells that do not function properly. They do not attempt to take over the function of the abnormal white blood cells, but rather crowd out the normal ones.

Choice B reason: This is also not a correct explanation for the large number of leukemic white cells. Leukemic white cells do not help to protect against infection, but rather increase the risk of infection. They impair the immune system's ability to fight off bacteria, viruses, and other pathogens.

Choice C reason: This is a partially correct explanation for the large number of leukemic white cells. Leukemic white cells are larger in size than normal white blood cells, and they can clog the bone marrow. This can interfere with the production of other blood cells, such as red blood cells and platelets. However, this is not the only reason for the large number of leukemic white cells.

Choice D reason: This is the best explanation for the large number of leukemic white cells. Leukemic white cells are not as effective as normal white cells to protect against infection, because they are immature and dysfunctional. They do not respond to signals from the immune system, and they do not recognize or destroy foreign invaders. They also prevent the normal white cells from doing their job.

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Which early symptoms in a focused assessment by the nurse may indicate the presence of a brain tumor?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

The nurse is explaining early changes with Parkinson disease to the student nurse. Which statement by the nurse is correct regarding the pathophysiology of the disease?

Correct Answer is C

Explanation

A patient with acute myelogenous leukemia (AML) asks the nurse why their bones are making more white blood cells when they already have so many. The nurse clarifies that the large number of leukemic white cells they have:

Correct Answer is D

Explanation

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