NCLEX-RN
NCLEX RN Practice Questions Free Questions
Extract:
Question 1 of 5
Which of the following would differentiate acute from chronic respiratory acidosis in the assessment of the trauma client?
Correct Answer: C
Rationale: Increased PaCO2 is present in both acute and chronic respiratory acidosis due to hypoventilation. Decreased PaO2 may occur in respiratory acidosis but does not differentiate acute from chronic. Increased HCO3 indicates renal compensation, which occurs in chronic respiratory acidosis as the body attempts to buffer the excess CO2, but not in acute cases where compensation has not yet occurred. Decreased base excess is not specific to differentiating acute from chronic respiratory acidosis.
Question 2 of 5
An 18-year-old girl is admitted to the hospital with a depressed skull fracture as a result of a car accident. If the nurse were to observe a rising pulse rate and lowering blood pressure, the nurse would suspect that the client:
Correct Answer: B
Rationale: Rising pulse rate and lowering blood pressure are indicative of hypovolemia, which is consistent with an internal injury causing blood loss.
Question 3 of 5
What information should the nurse give a new mother regarding the introduction of solid foods for her infant?
Correct Answer: B
Rationale: Introducing solid foods one at a time with 4-7 day intervals allows identification of allergies. The extrusion reflex fades by 4-6 months, and mixing in bottles or starting with fruits is not recommended.
Question 4 of 5
A client is admitted with disseminated herpes zoster (shingles). According to the Centers for Disease Control Guidelines for Infection Control:
Correct Answer: A
Rationale: Disseminated herpes zoster requires airborne precautions because the varicella-zoster virus can spread through respiratory droplets in immunocompromised patients.
Question 5 of 5
Decreased pulmonary blood flow, right-to-left shunting, and deoxygenated blood reaching the systemic circulation are characteristic of:
Correct Answer: A
Rationale: Tetralogy of Fallot is the most common cyanotic heart defect, which includes a VSD, pulmonary stenosis, an overriding aorta, and ventricular hypertrophy. The blood flow is obstructed because the pulmonary stenosis decreases the pulmonary blood flow and shunts blood through the VSD, creating a right-to-left shunt that allows deoxygenated blood to reach the systemic circulation. A VSD alone creates a left-to-right shunt. The pressure in the left ventricle is greater than that of the right; therefore, the blood will shunt from the left ventricle to the right ventricle, increasing the blood flow to the lungs. No deoxygenated blood will reach the Systemic circulation. In patent ductus arteriosus, the pressure in the aorta is greater than in the pulmonary artery, creating a left-to-right shunt. Oxygenated blood from the aorta flows into the unoxygenated blood of the pulmonary artery. Transposition of the great arteries results in two separate and parallel circulatory systems. The only mixing or shunting of blood is based on the presence of associated lesions.