The client, newly diagnosed with diabetic retinopathy, asks what caused this disorder.
What is the nurse’s best response?
Inability of oxygen to diffuse to tissues in the eye.
Loss of innervation throughout the eye.
Inability of cells in the eye to reproduce.
Increase of aqueous humor in the eye.
The Correct Answer is D
Oxygen cannot diffuse rapidly across the membrane to tissues in the eye. Diabetic retinopathy is caused by damage to the blood vessels of the retina, which is the light-sensitive tissue at the back of the eye. This damage can reduce the oxygen supply to the retina and lead to vision problems.
Choice A is wrong because cells in the eye can reproduce normally, but they may not function properly due to high blood sugar levels or lack of oxygen.
Choice B is wrong because diabetic retinopathy does not affect the production of aqueous humor, which is the fluid that fills the front part of the eye.
However, diabetes can cause another eye condition called glaucoma, which is caused by increased pressure from too much aqueous humor.
Choice C is wrong because diabetic retinopathy does not affect the nerve innervations throughout the eye.
However, diabetes can cause another eye condition called diabetic neuropathy, which is caused by damage to the nerves that control eye movement and pupil dilation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
The nurse should question the administration of human insulin to this client because they do not need exogenous insulin to maintain normal blood glucose levels. Human insulin is indicated for clients who have type 1 diabetes or type 2 diabetes that cannot be controlled by oral antidiabetic agents, diet, or exercise.
Choice A is wrong because a client who has been diagnosed with gestational diabetes may need human insulin to control their blood glucose levels during pregnancy, as oral antidiabetic agents are contraindicated.
Choice B is wrong because a client with type 2 diabetes, controlled with oral antidiabetic agents, who has a systemic infection may need human insulin to manage their blood glucose levels during periods of stress, as infection can increase blood glucose levels and impair the action of oral antidiabetic agents.
Choice D is wrong because a client who has been living with type 1 diabetes for 20 years needs human insulin to replace the endogenous insulin that their pancreas cannot produce.
Correct Answer is A
Explanation
Tolbutamide is preferred for clients with renal dysfunction, who may not be able to excrete chlorpropamide, because it is more easily cleared from the body.
Choice B. Tolazamide is wrong because it is a first-generation sulfonylurea that is used less frequently and is usually tried after tolbutamide and chlorpropamide have been shown to be ineffective.
Choice C. Chlorpropamide is wrong because it is a first-generation sulfonylurea that may accumulate in clients with renal dysfunction and cause hypoglycemia.
Choice D. Chlorpromazine is wrong because it is an antipsychotic agent, not an oral antidiabetic agent.
First-generation sulfonylureas are oral antidiabetic agents that stimulate insulin secretion from the pancreas.
They are used to treat type 2 diabetes mellitus.
The normal range of blood glucose level is 70 to 110 mg/dL.
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