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 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.
Correct Answer is A
Explanation
(a) Liver Disease:
Pitting edema is commonly seen in liver disease, especially in conditions like cirrhosis. Liver disease can lead to hypoalbuminemia, where low levels of albumin in the blood cause fluid to leak into the interstitial spaces, resulting in edema. Additionally, liver disease often leads to portal hypertension, which can also contribute to the development of edema.
(b) Diabetes mellitus:
While diabetes can cause complications such as diabetic nephropathy, which may lead to fluid retention, pitting edema is not a primary symptom directly associated with diabetes mellitus. Diabetic patients may develop edema due to kidney issues, but it is not as directly associated as with liver disease.
(c) End Stage Renal Disease:
End-stage renal disease (ESRD) can indeed cause significant fluid retention and edema, including pitting edema. The kidneys' inability to excrete excess fluid leads to its accumulation in tissues. However, the question seems to point towards liver disease, which directly leads to conditions causing pitting edema.
(d) Colon Cancer:
Colon cancer is not typically associated with pitting edema. While advanced cancer can lead to various complications, including fluid imbalances, it is not a primary cause of pitting edema. Edema related to cancer is often more localized and associated with tumor sites or treatment areas.
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