What is the major difference between the Somogyi effect and the dawn phenomenon?
One occurs between 4 a.m. and 9 a.m.
One is caused by the release of certain hormones.
One is characterized by hyperglycemia that is not triggered by overnight hypoglycemia.
One triggers insulin resistance and the release of glucose from the liver
The Correct Answer is C
Choice A reason: Both the Somogyi effect and the dawn phenomenon can occur between 4 a.m. and 9 a.m., so this is not a distinguishing factor between the two. They both involve changes in blood glucose levels during this early morning period.
Choice B reason: Both phenomena are influenced by the release of certain hormones, including growth hormone, cortisol, and catecholamines. These hormones can contribute to early morning hyperglycemia, but this alone does not differentiate the Somogyi effect from the dawn phenomenon.
Choice C reason: The Somogyi effect, also known as rebound hyperglycemia, is characterized by a period of hypoglycemia (low blood sugar) that occurs during the night, often as a result of excess insulin or other diabetic treatments. This overnight hypoglycemia triggers a counter-regulatory hormone response that leads to hyperglycemia in the early morning. In contrast, the dawn phenomenon is characterized by hyperglycemia in the early morning without preceding hypoglycemia. The dawn phenomenon is due to the natural overnight release of hormones like growth hormone and cortisol, which cause the liver to release glucose into the blood.
Choice D reason: While both effects involve hormone-mediated changes in glucose metabolism, the key difference lies in the presence or absence of preceding hypoglycemia. The dawn phenomenon does not involve insulin resistance triggered by overnight hypoglycemia, whereas the Somogyi effect does. The distinction primarily lies in the nocturnal blood sugar patterns and the body's response to them.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: Fever is not typically the first clinical manifestation of tumors in these areas. Fever may occur as a systemic response to cancer, but it is not usually the initial sign.
Choice B reason: Swelling can be a symptom of tumors, but it is not as specific or as commonly the first clinical manifestation as a palpable mass.
Choice C reason: Pain can be associated with tumors, but it is not usually the first clinical manifestation. Pain may develop as the tumor grows and affects surrounding tissues.
Choice D reason: A palpable mass is often the first clinical manifestation of tumors in the breast, testicle, and lymph nodes. In the breast, it may present as a new lump or mass that can be felt during a physical examination. In the testicle, it may present as a lump or swelling. In the lymph nodes, it may present as enlarged or firm lymph nodes that can be felt under the skin.
Correct Answer is ["A","B","D"]
Explanation
Choice A reason: Gestational diabetes is indeed due to insulin resistance. During pregnancy, hormonal changes can cause the body's cells to become less responsive to insulin, leading to higher blood glucose levels.
Choice B reason: In gestational diabetes, the pancreas is unable to produce enough insulin to overcome the insulin resistance caused by pregnancy hormones. This insufficient insulin production leads to elevated blood glucose levels.
Choice C reason: Gestational diabetes is not permanent. It specifically occurs during pregnancy and usually resolves after the baby is born. However, women who have had gestational diabetes are at an increased risk of developing type 2 diabetes later in life.
Choice D reason: Gestational diabetes occurs during pregnancy. It is diagnosed when blood glucose levels are elevated in a pregnant woman who did not have diabetes before pregnancy.
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