What is the primary pathophysiology of glaucoma?
Blockage of the tear ducts causing excessive tearing.
Inflammation of the cornea resulting in blurry vision.
Increased intraocular pressure (IOP) leading to optic nerve damage.
Degeneration of the lens leading to cataracts.
The Correct Answer is C
A) Blockage of the tear ducts causing excessive tearing:
Blockage of tear ducts (dacryostenosis) results in excessive tearing (epiphora) due to inadequate drainage of tears into the nasal cavity. It does not directly contribute to glaucoma, which primarily involves increased intraocular pressure (IOP) and optic nerve damage.
B) Inflammation of the cornea resulting in blurry vision:
Corneal inflammation (keratitis) can cause blurry vision, pain, and sensitivity to light, but it is not the primary pathophysiology of glaucoma. Glaucoma primarily involves damage to the optic nerve due to elevated IOP.
C) Increased intraocular pressure (IOP) leading to optic nerve damage:
Glaucoma is characterized by elevated IOP, which puts pressure on the optic nerve and can lead to progressive damage and vision loss if untreated. This is the primary pathophysiological process in most types of glaucoma.
D) Degeneration of the lens leading to cataracts:
Cataracts involve the clouding of the lens of the eye, leading to visual impairment. While cataracts are a common condition in older adults, they are not directly related to the pathophysiology of glaucoma, which primarily involves elevated IOP and optic nerve damage.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
(a) Inquire about family history of headaches:
While understanding the client's family history of headaches can be important for a comprehensive assessment, it is not the immediate priority. The description of "the worst headache" ever experienced could indicate a serious condition that needs urgent attention.
(b) Review the client's medical record:
Reviewing the client's medical record provides valuable information about their history and potential underlying conditions. However, given the severity of the reported headache, it is crucial to perform a more immediate physical assessment to rule out life-threatening conditions.
(c) Assess the client's blood pressure:
Assessing the client's blood pressure is a critical initial action. A severe headache can be a symptom of hypertensive crisis, stroke, or other serious conditions. High blood pressure could provide an immediate clue to the severity and cause of the headache, allowing for quicker intervention.
(d) Provide medication for pain relief:
Providing pain relief is important, but it should not be the first action without determining the cause of the headache. Administering medication without assessing the client's condition could mask symptoms of a potentially serious underlying issue such as a stroke or hypertensive emergency.
Correct Answer is D
Explanation
A) Dysphagia:
Dysphagia refers to difficulty swallowing and is typically associated with conditions affecting the esophagus or neuromuscular function. While it can coexist with other symptoms, it does not directly explain hoarseness, fatigue, and weight gain as hypothyroidism does.
B) Gingivitis:
Gingivitis is an inflammation of the gums due to plaque buildup. It primarily affects oral health, causing redness, swelling, and bleeding of the gums. It is not associated with systemic symptoms like hoarseness, fatigue, or weight gain.
C) Aphthous ulcers:
Aphthous ulcers, also known as canker sores, are small, painful lesions that develop in the mouth. They are typically caused by stress, minor injury, or certain foods. These ulcers do not explain the systemic symptoms described by the client.
D) Hypothyroidism:
Hypothyroidism is a condition where the thyroid gland does not produce enough thyroid hormones. Symptoms include hoarseness, fatigue, weight gain, dry skin, and cold intolerance. The combination of these symptoms in the client's history makes hypothyroidism the most likely cause.
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