Nokea
The kidneys regulate acid-base balance by all of the following mechanisms except:
- A. Excreting hydrogen ions (H )
- B. Reabsorbing carbon dioxide into the
- C. Reabsorbing or excreting HCO into blood
- D. retaining hydrogen ions
Correct Answer: B
Rationale: The kidneys help regulate acid-base balance through several mechanisms, including excreting hydrogen ions (H+), reabsorbing or excreting bicarbonate (HCO3-) into the blood, and retaining or excreting hydrogen ions. However, the kidneys do not play a direct role in reabsorbing carbon dioxide into the blood. Carbon dioxide is mainly managed in the body through the respiratory system, where it is exhaled as a waste product of metabolism.
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Which type of shock is characterized by a hypersensitivity reaction causing massive vasodilation and capillary leaks, which may occur with drug or latex allergy?
- A. Neurogenic
- B. Cardiogenic
- C. Hypovolemic
- D. Anaphylactic
Correct Answer: D
Rationale: Anaphylactic shock is characterized by a severe, systemic hypersensitivity reaction that can occur in response to allergens such as certain drugs or latex. During anaphylactic shock, the body releases large amounts of histamine and other inflammatory substances, leading to widespread vasodilation (dilation of blood vessels) and increased capillary permeability. This results in a rapid drop in blood pressure, decreased perfusion to vital organs, and potential life-threatening symptoms such as difficulty breathing and cardiovascular collapse. Immediate treatment with epinephrine and supportive measures such as intravenous fluids is crucial in managing anaphylactic shock.
The LEAST important advice for a 2-month-old baby with excessive crying is
- A. master the situation in relaxed manner
- B. adhere to precry cues
- C. change milk formula
- D. avoid sensory overstimulation
Correct Answer: C
Rationale: Changing formula is less critical if the baby is gaining weight adequately.
The nurse is taking vital signs of a pregnant woman during her first prenatal visit. The patient asks the nurse if she has to have an HIV test. Which of the following is the nurse's best response?
- A. "Yes, all pregnant women must have the test."
- B. "If you do not have multiple sex partners or inject drugs, it is not necessary."
- C. "Governmental guidelines require an HIV test for all pregnant woman."
- D. "After voluntary pretest counseling, you decide whether HIV testing should be done."
Correct Answer: D
Rationale: The nurse's best response is D, "After voluntary pretest counseling, you decide whether HIV testing should be done." It is important for the pregnant woman to make an informed decision about HIV testing after receiving pretest counseling. The decision should be based on her individual risk factors, concerns, and preferences. The nurse should provide information about the importance of HIV testing during pregnancy, the benefits of knowing one's HIV status, and the available treatment options if the test is positive. Ultimately, the decision should be made by the pregnant woman after considering all the information provided.
A client has possible malignancy of the colon, and surgery is scheduled. The rationale for administering Neomycin preoperatively is to:
- A. Prevent infection postoperatively
- B. Eliminate the need for preoperative enemas
- C. Decreased and retard the growth of normal bacteria in the intestines
- D. Treat cancer of the colon
Correct Answer: C
Rationale: The rationale for administering Neomycin preoperatively in the case of possible malignancy of the colon is to decrease and retard the growth of normal bacteria in the intestines. This is important because surgical procedures involving the colon carry a risk of infection due to the abundant normal bacterial flora present in the intestines. By administering Neomycin prior to surgery, the goal is to reduce the number of bacteria in the colon and minimize the risk of postoperative infections. It is not used to prevent infection or treat cancer directly, nor is it meant to eliminate the need for preoperative enemas.
The nurse is aware that the shift of body fluids associated with the intravenous administration of albumin occurs by the process of:
- A. Filtration
- B. Osmosis
- C. Diffusion
- D. Active Transport
Correct Answer: B
Rationale: Osmosis is the process by which water moves across a semi-permeable membrane to equalize concentrations on both sides of the membrane. When albumin is administered intravenously, it creates an osmotic pressure in the bloodstream that draws water from the interstitial space into the blood vessels. This shift of body fluids associated with the intravenous administration of albumin occurs through the process of osmosis.