The nurse recognizes that patients with von Willebrand disease are at risk for prolonged bleeding times for which reason?

Adequate platelet production.

Deficiency in intrinsic clotting system factor.

Impairment of the thrombin fibrinogen reaction.

Variable factor VIII deficiencies and platelet dysfunction.

Answer and Explanation

The Correct Answer is D

Choice A rationale:

Adequate platelet production does not explain the prolonged bleeding times in von Willebrand disease. These patients often have normal platelet counts, but their platelets do not function properly due to the absence or dysfunction of von Willebrand factor.

Choice B rationale:

Deficiency in intrinsic clotting system factor is not the primary cause of prolonged bleeding times in von Willebrand disease. The deficiency or dysfunction of von Willebrand factor, a protein that helps platelets adhere to the blood vessel walls and clot properly, is the key issue in this disorder.

Choice C rationale:

Impairment of the thrombin fibrinogen reaction does not directly relate to von Willebrand disease. This disorder primarily involves platelet dysfunction and variable factor VIII deficiencies, leading to prolonged bleeding times.

Choice D rationale:

Variable factor VIII deficiencies and platelet dysfunction are characteristic of von Willebrand disease. Factor VIII helps with blood clotting, and its deficiency, along with impaired platelet function, contributes to the prolonged bleeding times in patients with von Willebrand disease.

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Correct Answer is B

Explanation

Choice A rationale:

The base does interact with acids in the acid-base balance. Bases, by definition, are substances that can accept hydrogen ions (protons) and neutralize acids. In the context of acid-base balance, bases help regulate the pH of body fluids by counteracting the effects of acids.

Choice B rationale:

The role of the base in the acid-base balance is to promote the excretion of acid. Bicarbonate ions (HCO3-) are a vital component of the body's buffering system, helping to neutralize excess acid. The kidneys play a crucial role in excreting acids from the body, maintaining the acid-base balance.

Choice C rationale:

The base does not activate the system of acid-base balance; instead, it is part of the body's natural buffering system. The acid-base balance is regulated by the lungs and kidneys, which work together to maintain the pH of body fluids within a narrow range (7.35-7.45)

Choice D rationale:

Bases do not increase the action of hydrogen ions. In fact, bases neutralize hydrogen ions, which are acidic. By accepting these ions, bases help to decrease the acidity of a solution, playing a key role in maintaining the body's acid-base balance.

A. Occurs with both activity and rest. B. Generally lasts 10-15 minutes or more. C. Does not subside when the precipitating factor is resolved. D. Occurs intermittently over a period of time in a similar pattern.

Correct Answer is D

Explanation

Choice A rationale:

Chronic stable angina typically occurs with activity and is relieved with rest or nitroglycerin. Therefore, this statement is incorrect for chronic stable angina.

Choice B rationale:

Chronic stable angina usually lasts for a short duration, usually around 5 minutes, and is relieved with rest or nitroglycerin. Prolonged pain lasting 10-15 minutes or more could indicate an unstable angina or myocardial infarction. This choice is incorrect for chronic stable angina.

Choice C rationale:

Pain due to chronic stable angina subsides when the precipitating factor, such as physical exertion, is resolved or with medication like nitroglycerin. Therefore, this statement is incorrect for chronic stable angina.

Choice D rationale:

Chronic stable angina follows a predictable pattern, occurring intermittently over a period of time, and is usually triggered by physical exertion or emotional stress. This option correctly describes the characteristic pattern of chronic stable angina.

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The nurse recognizes that patients with von Willebrand disease are at risk for prolonged bleeding times for which reason?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Which role is attributed to the base in the acid-base balance?

Correct Answer is B

Explanation

Which information would the nurse include when discussing pain due to chronic stable angina with the patient?

Correct Answer is D

Explanation

Which acid-base mechanism would the kidney use to buffer a patient's acidosis (serum pH <7.35)? Select all that apply.One, some, or all responses may be correct.

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