The nurse cares for a client who has had a left-sided intracerebral hemorrhage. The client is unable to detect light and pain touch on the right arm. Which explanation best describes these observations?

Compression of white matter in the brain and spinal cord

Decreased levels of gamma-aminobutyric acid (GABA) in the brain stem

Decreased levels of neurotransmitters in the pons and medulla

Edema and necrosis of the parietal lobe neurons

Answer and Explanation

The Correct Answer is D

Choice A reason: Compression of white matter in the brain and spinal cord is not the best explanation because it is a condition that affects the transmission of nerve impulses, not the perception of sensory stimuli. White matter is the part of the nervous system that consists of myelinated axons, which are the extensions of nerve cells that carry electrical signals from one cell to another. Compression of white matter can be caused by various factors, such as tumors, trauma, or inflammation, and can result in symptoms such as weakness, numbness, or paralysis.

Choice B reason: Decreased levels of gamma-aminobutyric acid (GABA) in the brain stem is not the best explanation because it is a condition that affects the regulation of muscle tone, not the perception of sensory stimuli. GABA is a neurotransmitter, which is a chemical messenger that transmits signals between nerve cells. GABA is an inhibitory neurotransmitter, which means that it reduces the activity of the nerve cells that it binds to. GABA is mainly found in the brain stem, which is the part of the brain that connects the spinal cord to the cerebrum and cerebellum, and controls vital functions such as breathing, heart rate, and blood pressure. Decreased levels of GABA in the brain stem can cause symptoms such as spasticity, rigidity, or tremors.

Choice C reason: Decreased levels of neurotransmitters in the pons and medulla is not the best explanation because it is a condition that affects the coordination of movements, not the perception of sensory stimuli. Neurotransmitters are chemical messengers that transmit signals between nerve cells. The pons and the medulla are parts of the brain stem that are involved in the control of voluntary and involuntary movements, such as chewing, swallowing, coughing, sneezing, and blinking. Decreased levels of neurotransmitters in the pons and the medulla can cause symptoms such as ataxia, dysarthria, dysphagia, or nystagmus.

Choice D reason: Edema and necrosis of the parietal lobe neurons is the best explanation because it is a condition that affects the processing of sensory stimuli, such as touch, pain, temperature, and position. The parietal lobe is the part of the cerebrum that is responsible for integrating and interpreting sensory information from different parts of the body. The parietal lobe is divided into two hemispheres, each corresponding to the opposite side of the body. A left-sided intracerebral hemorrhage is a condition where a blood vessel in the left parietal lobe ruptures, causing bleeding and swelling in the brain tissue. This can damage the neurons, which are the nerve cells that communicate with each other and form the basis of the nervous system. Edema and necrosis of the parietal lobe neurons can cause symptoms such as loss of sensation, neglect, or agnosia on the right side of the body.

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Correct Answer is C

Explanation

Choice A reason: Initiates the fibrinolytic process in the arteries is not a role of inflammation in the development of atherosclerosis, but a protective mechanism against it. Fibrinolysis is the breakdown of blood clots by enzymes such as plasmin. It prevents the formation of thrombi that can occlude the arteries and cause ischemia.

Choice B reason: Decreases highly sensitive C-reactive protein (hsCRP) levels is not a role of inflammation in the development of atherosclerosis, but an indicator of it. hsCRP is a marker of systemic inflammation that is produced by the liver in response to cytokines. It is elevated in patients with atherosclerosis and correlates with the risk of cardiovascular events.

Choice C reason: Damages the endothelium of the arteries is the main role of inflammation in the development of atherosclerosis. Endothelial injury exposes the subendothelial layer to the blood, which triggers the adhesion of monocytes and platelets. Monocytes differentiate into macrophages and engulf oxidized low-density lipoproteins (LDL), forming foam cells. Foam cells accumulate in the intima and form fatty streaks, which are the earliest lesions of atherosclerosis.

Choice D reason: Causes diffuse arterial vasoconstriction is not a role of inflammation in the development of atherosclerosis, but a consequence of it. Atherosclerosis narrows the lumen of the arteries and reduces the blood flow to the tissues. This causes ischemia, which stimulates the release of vasoconstrictors such as angiotensin II and endothelin. Vasoconstriction further worsens the ischemia and increases the blood pressure.

A. A client with a 10-year history of chronic lung disease B. A client receiving parenteral nutrition for 2 weeks C. A client with a history of severe diarrhea for 5 days D. A client with a temperature of 102°F (38.9°C) for 48 hours

Correct Answer is C

Explanation

Choice A reason: A client with a 10-year history of chronic lung disease is not the most at risk to develop metabolic acidosis because chronic lung disease causes respiratory acidosis, not metabolic acidosis. Respiratory acidosis is a condition where the lungs cannot eliminate enough carbon dioxide, resulting in a low pH and a high bicarbonate level in the blood.

Choice B reason: A client receiving parenteral nutrition for 2 weeks is not the most at risk to develop metabolic acidosis because parenteral nutrition does not affect the acid-base balance of the body, unless there is an infection or a complication. Parenteral nutrition is a method of providing nutrients through a vein, bypassing the digestive system.

Choice C reason: A client with a history of severe diarrhea for 5 days is the most at risk to develop metabolic acidosis because diarrhea causes loss of bicarbonate, which is a base that helps maintain the pH of the blood. Loss of bicarbonate leads to a low pH and a low bicarbonate level in the blood, indicating metabolic acidosis.

Choice D reason: A client with a temperature of 102°F (38.9°C) for 48 hours is not the most at risk to develop metabolic acidosis because fever does not directly cause metabolic acidosis, unless there is dehydration or sepsis. Fever is a symptom of an infection or inflammation, which can increase the metabolic rate and the production of carbon dioxide, but the lungs can usually compensate by increasing the ventilation.

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The nurse cares for a client who has had a left-sided intracerebral hemorrhage. The client is unable to detect light and pain touch on the right arm. Which explanation best describes these observations?

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Naxlex Comprehensive Predictor Exams

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Correct Answer is C

Explanation

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Correct Answer is C

Explanation

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