A nurse is caring for a patient who has the following arterial blood values: pH 7.12, PaO 56 mm Hg, PaCO 65 mm Hg, and HCO - 22 mEq/L (22 mmol/L). Which clinical situation does the nurse correlate with these values?
Diabetic ketoacidosis in a person with emphysema
Diarrhea for 36 hours in an older, frail woman
Anxiety-induced hyperventiIation in an adolescent
Bronchial obstruction related to aspiration of a hot dog
The Correct Answer is D
A. Diabetic ketoacidosis (DKA) in a person with emphysema:
In DKA, there is typically metabolic acidosis due to the accumulation of ketones in the blood, leading to a decrease in pH. However, the respiratory compensation mechanism in DKA usually results in a decreased PaCO2 (respiratory alkalosis) rather than an elevated PaCO2 as seen in the blood gas values provided. Additionally, emphysema is associated with chronic respiratory acidosis, not respiratory alkalosis as indicated by the elevated PaCO2.
B. Diarrhea for 36 hours in an older, frail woman:
Prolonged diarrhea can lead to metabolic acidosis due to the loss of bicarbonate through the gastrointestinal tract. The pH of 7.12 and the decreased HCO3- (22 mEq/L) suggest metabolic acidosis. However, the elevated PaCO2 (respiratory acidosis) is not consistent with pure metabolic acidosis caused by diarrhea. Respiratory acidosis typically occurs due to hypoventilation or respiratory dysfunction.
C. Anxiety-induced hyperventilation in an adolescent:
Anxiety-induced hyperventilation can lead to respiratory alkalosis due to excessive blowing off of CO2, resulting in a decrease in PaCO2. The pH of 7.12 is consistent with acidosis, but the elevated PaCO2 contradicts respiratory alkalosis. Anxiety-induced hyperventilation would typically result in a higher pH and lower PaCO2.
D. Bronchial obstruction related to aspiration of a hot dog:
A bronchial obstruction causing inadequate ventilation can lead to respiratory acidosis due to CO2 retention. The pH of 7.12 and the elevated PaCO2 (65 mm Hg) indicate respiratory acidosis. This situation is consistent with the blood gas values provided.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Arrange for the patient to receive gamma globulin.
Gamma globulin is a blood product that contains antibodies and is sometimes used for post-exposure prophylaxis in certain situations, such as for individuals who are immunocompromised or pregnant and have been exposed to varicella (chickenpox) or measles. However, for a frail, older adult who had chickenpox as a child and has been exposed to varicella again, arranging for gamma globulin may not be necessary if the patient is already immune to chickenpox.
B. Assess frequently for herpes zoster.
Herpes zoster (shingles) is caused by the reactivation of the varicella-zoster virus, the same virus that causes chickenpox. While exposure to varicella can increase the risk of developing shingles in individuals who are susceptible, frequent assessment for herpes zoster is not necessary in this case if the patient is known to have had chickenpox in the past.
C. Be aware of the patient's immunity to chickenpox.
This option is the correct choice. Since the patient had chickenpox as a child, they likely have immunity to chickenpox. Being aware of this immunity helps the nurse understand that the patient may not develop chickenpox again even after exposure to varicella.
D. Encourage the patient to have a pneumonia vaccine.
Encouraging the patient to have a pneumonia vaccine is unrelated to the immediate concern of exposure to varicella. While pneumonia vaccines are important for older adults, especially those who are frail, the priority in this scenario is to determine the patient's immunity to chickenpox due to prior infection.
Correct Answer is C
Explanation
A. Superficial infections are caused by fungus.
While fungal infections can indeed cause superficial skin infections like tinea (ringworm) or candidiasis, they are not the common factor for the etiology and pathophysiology of folliculitis, furuncles, and carbuncles. These conditions primarily involve bacterial infections of the hair follicles, typically caused by Staphylococcus aureus bacteria.
B. Parasites get underneath the skin.
Parasitic infections can cause various skin conditions, but they are not the common factor for folliculitis, furuncles, and carbuncles. These conditions are specifically related to bacterial infections of the hair follicles rather than parasitic infestations.
C. Hair follicles are infected or inflamed.
This is the correct choice and the common factor for folliculitis, furuncles, and carbuncles. All three conditions involve the infection or inflammation of hair follicles, primarily due to Staphylococcus aureus bacteria. Folliculitis is the inflammation of one or more hair follicles, furuncles are deeper infections involving the hair follicle and surrounding tissue, and carbuncles are clusters of interconnected furuncles with deeper tissue involvement.
D. There is an allergic response to an allergen.
An allergic response to an allergen does not play a role in the etiology and pathophysiology of folliculitis, furuncles, and carbuncles. These conditions are primarily infectious in nature, involving bacterial colonization and subsequent inflammation of the hair follicles rather than an allergic response.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.