A nurse is assessing a client's understanding of a surgical procedure prior to witnessing their signature on the informed consent form. The nurse determines that the client does not understand what the procedure will involve. Which of the following actions should the nurse take?

Choice A rationale:
A PaO2 value of 86 mm Hg is within the normal range (80-100 mm Hg) and does not indicate respiratory acidosis. PaO2 measures the partial pressure of oxygen in arterial blood.
Choice B rationale:
A pH of 7.4 is within the normal range (7.35-7.45) and does not indicate respiratory acidosis. The pH reflects the acidity or alkalinity of the blood.
Choice C rationale:
An HCO3 (bicarbonate) level of 16 mEq/L is within the normal range (22-28 mEq/L) and does not indicate respiratory acidosis. HCO3 is a measure of the metabolic component of the body's acid-base balance.
Choice D rationale:
This is the correct choice. A PaCO2 value of 58 mm Hg is elevated and indicates respiratory acidosis. PaCO2 measures the partial pressure of carbon dioxide in arterial blood, and an elevated value suggests the presence of excess carbon dioxide, leading to acidosis.

Answer: D. Contact the provider who will be performing the procedure.

Rationale:

A) Provide teaching about the surgical procedure for the client:

While nurses play an essential role in patient education, it is the responsibility of the healthcare provider performing the procedure to ensure the patient fully understands the details, risks, and benefits. Nurses can clarify information but should not provide the initial comprehensive explanation of the procedure.

B) Instruct the client's spouse to sign the consent form:

The client is the one who needs to provide informed consent, not the spouse, unless the client is legally unable to do so. In such cases, legal documentation, such as a power of attorney, is required. Instructing the spouse to sign without proper authorization is inappropriate and potentially legally problematic.

C) Read the consent form to the client using words the client will understand:

While simplifying the language of the consent form can help, it is not sufficient if the client does not fully understand the procedure. Full understanding requires a detailed discussion about the procedure, risks, benefits, and alternatives, which should be done by the provider performing the procedure.

D) Contact the provider who will be performing the procedure:

The provider performing the procedure has the responsibility to ensure the client understands all aspects of the surgery. Contacting the provider to provide a thorough explanation ensures that the client receives accurate and complete information, allowing for truly informed consent.