Which condition(s) would cause the nurse to hold a PRN order for magnesium hydroxide (Milk of Magnesia)?

Chronic renal failure

Cirrhosis

Hemorrhoids

Undiagnosed abdominal pain

Answer and Explanation

The Correct Answer is A

Choice A reason:
In patients with chronic renal failure, the kidneys cannot effectively excrete magnesium, leading to the risk of hypermagnesemia. Magnesium hydroxide, commonly used as an antacid and laxative, should be used with caution or avoided in these patients to prevent magnesium accumulation in the blood, which can have serious cardiovascular and neuromuscular effects.

Choice B reason:
While cirrhosis affects liver function and can alter drug metabolism, magnesium hydroxide does not have a direct contraindication for use in patients with cirrhosis. However, caution is necessary due to potential electrolyte imbalances and altered pharmacokinetics. The primary concern with magnesium hydroxide in these patients is less critical compared to those with renal failure.

Choice C reason:
Hemorrhoids do not directly contraindicate the use of magnesium hydroxide. This condition primarily affects the veins around the rectum and anus and is unrelated to the systemic effects of magnesium. Therefore, the presence of hemorrhoids does not necessitate withholding the medication.

Choice D reason:
Undiagnosed abdominal pain is a significant consideration before administering magnesium hydroxide. The use of laxatives can exacerbate conditions like intestinal obstruction or acute abdomen. Therefore, caution is advised, but the immediate and more critical concern remains the risk posed to patients with chronic renal failure.

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

Explanation

Choice A reason:
HIV can be transmitted through blood products. This mode of transmission occurs when contaminated blood, used in transfusions or other medical procedures, carries the virus to another person. It is one of the primary ways HIV spreads, especially before strict blood screening protocols were implemented.
Choice B reason:
Perinatal transmission refers to the transmission of HIV from a mother to her fetus during pregnancy, childbirth, or breastfeeding. This is a significant mode of transmission, particularly in regions with high HIV prevalence and limited access to antiretroviral therapy.
Choice C reason:
This choice is incorrect because HIV is not transmitted through airborne means. Unlike respiratory viruses, HIV requires direct contact with certain body fluids for transmission. Airborne transmission would imply that the virus could spread through the air, which is not the case with HIV.
Choice D reason:
Sexual transmission is a major route for HIV spread. The virus is present in bodily fluids such as semen, vaginal fluids, and rectal fluids. Unprotected sexual contact allows the virus to pass from one person to another, making this a crucial mode of HIV transmission.

A. Stenosis B. Regurgitation C. Insufficiency D. Incompetence

Correct Answer is A

Explanation

Choice A reason:
Stenosis is characterized by the constriction and narrowing of the valve opening, which causes the valve leaflets to fail to open completely. This condition restricts blood flow through the valve, leading to increased pressure in the heart and reduced blood flow to the body or lungs, depending on which valve is affected.

Choice B reason:
Regurgitation refers to the condition where the valve does not close properly, allowing blood to flow backward. This is different from stenosis, where the valve opening is narrowed and does not allow sufficient blood flow forward.

Choice C reason:
Insufficiency is another term for regurgitation and involves the backward flow of blood due to improper closure of the valve. It does not describe the condition where the valve opening is narrowed and restricts forward blood flow.

Choice D reason:
Incompetence also refers to the inability of the valve to close properly, leading to regurgitation. It is not used to describe the narrowing of the valve opening, which is the defining characteristic of stenosis.

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Which condition(s) would cause the nurse to hold a PRN order for magnesium hydroxide (Milk of Magnesia)?

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Naxlex Comprehensive Predictor Exams

Which modes of transmission occur with HIV infection? (Select all that apply)

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

Explanation

Which valvular condition is characterized by the valve opening being constricted and narrowed, causing the valve leaflets, or cusps, to fail to open completely?

Correct Answer is A

Explanation

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