A nurse is providing teaching to a group of clients about changes that occur when clients experience open-angle glaucoma. Which of the following statements should the nurse include in the teaching?

"Vision changes occur when blood vessels leak fluid or blood under a portion of the retina."

"Vision changes occur when the cloudy lens alters the passage of light through the eye."

"Vision changes occur when retinal tissue pulls away from the blood vessels in the eye."

"Vision changes occur when pressure in the eye is increased due to a decrease of aqueous humor."

Answer and Explanation

The Correct Answer is D

A. "Vision changes occur when blood vessels leak fluid or blood under a portion of the retina": This statement describes a symptom of diabetic retinopathy, not open-angle glaucoma. In open-angle glaucoma, vision changes primarily result from increased intraocular pressure (IOP) due to impaired drainage of aqueous humor, not leakage of fluid or blood under the retina.

B. "Vision changes occur when the cloudy lens alters the passage of light through the eye": This statement describes a symptom of cataracts, not open-angle glaucoma. Cataracts involve clouding of the lens inside the eye, which affects the passage of light and leads to visual disturbances. Open-angle glaucoma, however, primarily affects the optic nerve and visual field due to increased intraocular pressure.

C. "Vision changes occur when retinal tissue pulls away from the blood vessels in the eye": This statement describes a symptom of retinal detachment, not open-angle glaucoma. Retinal detachment occurs when the retina detaches from the underlying layers of the eye, leading to vision changes and potentially vision loss. Open-angle glaucoma, on the other hand, primarily involves increased intraocular pressure and optic nerve damage.

D. "Vision changes occur when pressure in the eye is increased due to a decrease of aqueous humor": This statement is accurate. In open-angle glaucoma, vision changes occur due to increased intraocular pressure resulting from inadequate drainage of aqueous humor from the eye. This increased pressure can lead to damage of the optic nerve, resulting in peripheral vision loss and potentially blindness if left untreated.

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Correct Answer is ["B","C","D"]

Explanation

Pulseless electrical activity (PEA) refers to a situation in which an electrocardiogram (ECG) shows electrical activity in the heart, but there is no effective mechanical activity and no palpable pulse. PEA can result from various underlying conditions that impair cardiac function or compromise circulation.

A. Hypertension: Hypertension, or high blood pressure, is not typically a direct cause of PEA. While uncontrolled hypertension can contribute to cardiovascular disease and increase the risk of cardiac events such as myocardial infarction, it is not a direct cause of PEA.

B. Hypovolemia: Hypovolemia, or low blood volume, is a common cause of PEA. Reduced circulating blood volume leads to decreased preload and inadequate filling of the heart chambers, impairing cardiac output. This can result in ineffective cardiac contractions and the development of PEA.

C. Hypoxia: Hypoxia, or inadequate oxygenation of tissues, is a significant cause of PEA. Insufficient oxygen delivery to the myocardium impairs cardiac function and can lead to ineffective cardiac contractions. Without adequate oxygenation, the heart is unable to generate sufficient mechanical force to maintain circulation, resulting in PEA.

D. Hyperkalemia: Hyperkalemia, or elevated levels of potassium in the blood, can cause PEA by disrupting cardiac electrical activity. Excessive potassium ions in the extracellular fluid alter the normal myocardial action potential, leading to cardiac conduction abnormalities and potential arrhythmias, including PEA.

E. Hypernatremia: Hypernatremia, or elevated levels of sodium in the blood, is not typically a direct cause of PEA. While severe hypernatremia can lead to neurological symptoms and dehydration, it does not directly impair cardiac electrical activity or mechanical function to the extent that it causes PEA.

F. Hyperthermia: Hyperthermia, or elevated body temperature, is not typically a direct cause of PEA. While extreme hyperthermia can lead to cardiovascular complications such as heat stroke, it is not a common cause of PEA unless it is associated with severe systemic metabolic derangements.

A. "l should not drive while taking this new medication." B. "This new medication may decrease my sex drive." C. "This medication can make me have mood swings." D. "l may have frequent hiccups while taking this medication." E. "l may have urinary incontinence while taking this medication."

Correct Answer is ["A"]

Explanation

A. "I should not drive while taking this new medication."

Carvedilol is a beta blocker commonly prescribed for conditions like cardiomyopathy. One of the potential side effects of beta blockers, including carvedilol, is dizziness or drowsiness. These effects can occur, particularly when starting the medication or when the dosage is increased. Therefore, it's crucial for patients to understand that they may experience these symptoms and should avoid activities that require alertness, such as driving or operating heavy machinery, until they are aware of how the medication affects them. This precaution helps ensure their safety and the safety of others on the road.

B. "This new medication may decrease my sex drive."

Sexual dysfunction, including decreased libido or erectile dysfunction, is a recognized side effect of beta blockers like carvedilol. These medications can affect the autonomic nervous system and interfere with normal sexual function in some individuals. It's essential for patients to be aware of this potential side effect and to discuss any concerns with their healthcare provider. Open communication about sexual health can help address any issues that arise and explore alternative treatment options if necessary.

C. "This medication can make me have mood swings."

While mood changes are possible side effects of some medications, including certain classes of antidepressants or corticosteroids, they are not typically associated with beta blockers like carvedilol. Beta blockers primarily affect the cardiovascular system by blocking the effects of adrenaline, leading to decreased heart rate and blood pressure. While some patients may experience fatigue or depression as a side effect of beta blockers, mood swings are not a common manifestation. Therefore, this statement does not accurately reflect the potential side effects of carvedilol.

D. "I may have frequent hiccups while taking this medication."

While gastrointestinal side effects such as nausea, vomiting, or diarrhea are possible with carvedilol, frequent hiccups are not a commonly reported side effect of this medication. Hiccups, though often benign, can occasionally be bothersome or indicative of an underlying issue. However, they are not typically associated with beta blockers like carvedilol. Therefore, this statement does not accurately reflect the potential side effects of the medication.

E. "I may have urinary incontinence while taking this medication."

Urinary incontinence is a potential side effect of beta blockers like carvedilol. These medications can affect bladder function by relaxing the smooth muscle of the bladder and urethra, leading to urinary retention or incontinence in some individuals. Patients should be aware of this possibility and discuss any urinary symptoms with their healthcare provider. Depending on the severity of the symptoms, adjustments to the medication regimen or additional treatments may be necessary to manage urinary incontinence effectively.

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A nurse is providing teaching to a group of clients about changes that occur when clients experience open-angle glaucoma. Which of the following statements should the nurse include in the teaching?

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Naxlex Comprehensive Predictor Exams

A nurse is providing care for a client following a cardiac arrest due to pulseless electrical activity (PEA). Which of the following alterations are causes of PEA? (Select All that Apply.)

Correct Answer is ["B","C","D"]

Explanation

A nurse is teaching a client who has cardiomyopathy about the side effects of their new prescription beta blocker, carvedilol. Which of the following client statements should indicate to the nurse that the client understands the teaching? (select all that apply)

Correct Answer is ["A"]

Explanation

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