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.

Eliminating excess H+.

Excreting excess water.

Eliminating excess CO2.

Reabsorbing additional HCO3-.

Reabsorbing additional sodium ions.

Answer and Explanation

Correct Answer : A,D

Choice A rationale:

Eliminating excess H+ ions (hydrogen ions) is a primary mechanism the kidneys use to buffer acidosis. In acidosis, there is an excess of hydrogen ions in the body, leading to a decrease in pH. The kidneys help regulate the body's pH by excreting hydrogen ions to lower acidity.

Choice B rationale:

Excreting excess water is not a specific acid-base mechanism related to acidosis. While maintaining proper hydration is important for overall health, it does not directly influence the body's acid-base balance in the context of acidosis.

Choice C rationale:

Eliminating excess CO2 is primarily a respiratory mechanism, not a kidney function. CO2 elimination is more related to the lungs' ability to regulate the body's pH by adjusting respiratory rate and depth.

Choice D rationale:

Reabsorbing additional HCO3- ions (bicarbonate ions) is a renal mechanism to buffer acidosis. Bicarbonate ions act as a base and can neutralize excess hydrogen ions, raising the pH of the body fluids.

Choice E rationale:

Reabsorbing additional sodium ions is not a specific acid-base mechanism related to acidosis. While sodium ions are important for various physiological processes, they do not play a direct role in buffering acidosis.

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

Explanation

Choice A rationale:

Palpitations are not directly related to a low hemoglobin level. They can occur due to various cardiac conditions but are not specific to anemia.

Choice B rationale:

Conjunctival pallor is a common physical finding in patients with low hemoglobin levels (anemia) Anemia leads to reduced oxygen-carrying capacity, causing paleness in mucous membranes such as the conjunctiva.

Choice C rationale:

Sternal tenderness is not a typical finding associated with low hemoglobin levels. It is more often associated with conditions affecting the sternum or adjacent structures, such as infections or inflammation.

Choice D rationale:

A heart rate of 104 beats/min can be a compensatory response to anemia. When the body senses reduced oxygen levels due to anemia, the heart rate may increase to pump more blood and oxygen to vital organs, attempting to compensate for the low hemoglobin levels.

A. Spasm of a major coronary artery. B. Exposure of the thrombogenic surface to plaque. C. Myocardial ischemia due to coronary artery disease. D. Myocardial ischemia secondary to microvascular disease.

Correct Answer is C

Explanation

Choice A rationale:

Spasm of a major coronary artery, also known as variant (Prinzmetal's) angina, typically occurs at rest and is not necessarily provoked by exertion. The patient's chest pain is exacerbated by exertion, making this choice less likely.

Choice B rationale:

Exposure of the thrombogenic surface to plaque refers to acute coronary syndromes like unstable angina or myocardial infarction. While plaque rupture and thrombosis can cause myocardial ischemia, the characteristic feature of these conditions is chest pain that may not be relieved by rest, unlike the patient described here.

Choice D rationale:

Myocardial ischemia secondary to microvascular disease, also known as cardiac syndrome X, is a condition where chest pain occurs without significant coronary artery stenosis. However, this condition usually affects women, and the pain is often unrelated to exertion. In the given case, the pain is provoked by exertion, making this choice less likely.

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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.

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Which finding would the nurse expect to see in a patient with a hemoglobin level of 8 g/dL? Select all that apply.One, some, or all responses may be correct.

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

Explanation

A patient reports episodic chest pain lasting a few minutes that is provoked by exertion and relieved within 10 minutes upon resting.Which cause of the patient's symptoms would the nurse suspect?

Correct Answer is C

Explanation

A patient's blood pressure (BP) reading is 142/91 mm Hg. How would the nurse classify the BP?

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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.