A previously healthy, young adult had cardiopulmonary arrest during a football game and died. The nurse knows which explanation is the most likely cause of death?
Formation of a clot in the middle cerebral artery
Obstruction of left ventricular blood flow and cardiac dysrhythmias
Fluid volume overload and decreased serum potassium levels
Diffuse atherosclerosis in the left main coronary artery circulation
The Correct Answer is B
Choice A reason: Formation of a clot in the middle cerebral artery is not the most likely cause of death because it is a condition that affects the brain, not the heart. A clot in the middle cerebral artery can cause a stroke, which is a sudden interruption of blood flow to the brain, resulting in brain damage and neurological deficits. A stroke can be fatal, but it does not usually cause cardiopulmonary arrest, which is a sudden cessation of heart and lung function.
Choice B reason: Obstruction of left ventricular blood flow and cardiac dysrhythmias is the most likely cause of death because it is a condition that affects the heart, which is the organ responsible for pumping blood throughout the body. Obstruction of left ventricular blood flow can be caused by hypertrophic cardiomyopathy, which is a genetic disorder that causes the heart muscle to become abnormally thick and stiff, reducing the amount of blood that the heart can pump. Cardiac dysrhythmias are abnormal heart rhythms that can interfere with the electrical signals that control the heart's contractions. Both conditions can lead to sudden cardiac death, which is a sudden and unexpected loss of heart function, resulting in cardiopulmonary arrest.
Choice C reason: Fluid volume overload and decreased serum potassium levels are not the most likely cause of death because they are conditions that affect the fluid and electrolyte balance of the body, not the heart. Fluid volume overload is a condition where the body retains too much fluid, which can cause edema, hypertension, and heart failure. Decreased serum potassium levels are a condition where the blood has too little potassium, which is an electrolyte that helps regulate the nerve and muscle function, including the heart. Both conditions can affect the heart function, but they are not usually the direct cause of cardiopulmonary arrest.
Choice D reason: Diffuse atherosclerosis in the left main coronary artery circulation is not the most likely cause of death because it is a condition that affects the blood vessels, not the heart. Atherosclerosis is a disease that causes the buildup of plaque, which is a fatty substance, in the walls of the arteries, which are the blood vessels that carry oxygen-rich blood to the organs. Diffuse atherosclerosis in the left main coronary artery circulation means that the plaque affects the entire length of the artery that supplies blood to the left side of the heart, which is the side that pumps blood to the rest of the body. Atherosclerosis can cause coronary artery disease, which is a condition where the heart does not receive enough blood and oxygen, leading to chest pain, angina, or heart attack. A heart attack can cause cardiopulmonary arrest, but it is not as common as sudden cardiac death in young adults.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: The thyroid gland is cancerous is not a correct description of a goiter. A goiter is a non-specific term that refers to any enlargement of the thyroid gland, which may have various causes and may or may not be associated with thyroid cancer.
Choice B reason: The client has a low serum calcium level is not a correct description of a goiter. A low serum calcium level is a sign of hypoparathyroidism, which is a condition that affects the parathyroid glands, not the thyroid gland. The parathyroid glands are located behind the thyroid gland and regulate the calcium and phosphorus levels in the blood.
Choice C reason: The thyroid gland has been surgically removed is not a correct description of a goiter. A goiter is a condition that involves the presence of an enlarged thyroid gland, not the absence of it. A surgical removal of the thyroid gland is called a thyroidectomy, which may be done for various reasons such as thyroid cancer, hyperthyroidism, or large goiters.
Choice D reason: The thyroid gland is enlarged is the best description of a goiter. A goiter is a condition that involves the enlargement of the thyroid gland, which may be due to iodine deficiency, autoimmune disease, inflammation, infection, benign nodules, or thyroid hormone imbalance. A goiter may cause symptoms such as difficulty swallowing, breathing, or speaking, hoarseness, cough, or neck discomfort.
Correct Answer is A
Explanation
Choice A reason: The client has hypoglycemia during the night and hyperglycemia in the morning is the best explanation because it is the definition of the Somogyi effect, which is a rebound phenomenon that occurs in some people with type 1 diabetes mellitus. Type 1 diabetes mellitus is a condition where the pancreas does not produce enough insulin, which is a hormone that helps the cells use glucose, which is a sugar that provides energy for the body. The Somogyi effect happens when the blood glucose level drops too low during the night, usually due to taking too much insulin or not eating enough carbohydrates before bedtime. This triggers the release of hormones, such as glucagon, epinephrine, and cortisol, that raise the blood glucose level by stimulating the liver to produce more glucose and by preventing the cells from using glucose. This results in a high blood glucose level in the morning, which is called hyperglycemia.
Choice B reason: The client has not taken the prescribed insulin dose prior to the evening meal is not the best explanation because it is a factor that can cause the opposite of the Somogyi effect, which is the dawn phenomenon. The dawn phenomenon is a condition where the blood glucose level rises in the early morning, usually due to the natural increase of hormones, such as growth hormone and cortisol, that occur during the night. These hormones reduce the effectiveness of insulin and increase the blood glucose level. The dawn phenomenon can be worsened by not taking enough insulin or by eating too many carbohydrates in the evening.
Choice C reason: The client will have an abnormal glycosylated hemoglobin (HbA1c) for the next two months is not the best explanation because it is a consequence, not a cause, of the Somogyi effect. Glycosylated hemoglobin (HbA1c) is a test that measures the average blood glucose level over the past two to three months, by showing how much glucose is attached to the hemoglobin, which is the protein that carries oxygen in the red blood cells. The Somogyi effect can cause the HbA1c level to be higher than expected, because it reflects the high blood glucose level in the morning, not the low blood glucose level during the night.
Choice D reason: The client will experience complications earlier than other clients with type 1 diabetes mellitus do is not the best explanation because it is a general statement, not a specific explanation, of the Somogyi effect. The Somogyi effect can increase the risk of complications, such as eye, kidney, nerve, and heart problems, because it causes fluctuations in the blood glucose level, which can damage the blood vessels and the organs. However, the Somogyi effect is not the only factor that can affect the development and progression of complications. Other factors, such as genetics, lifestyle, and comorbidities, can also play a role.
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