a nurse is reviewing abg laboratory results of a client who is in respiratory distress the results are ph 747 paco2 32 mm hg hco3 22 mm hg the nurse s

ATI RN

ATI Fundamentals

1. A healthcare professional is reviewing ABG laboratory results of a client who is in respiratory distress. The results are pH 7.47, PaCO2 32 mm Hg, and HCO3 22 mm Hg. The healthcare professional should recognize that the client is experiencing which of the following acid-base imbalances?

A. Respiratory acidosis
B. Respiratory alkalosis
C. Metabolic acidosis
D. Metabolic alkalosis

Correct answer: B

Rationale: The ABG results show a high pH (alkalosis) along with low PaCO2 and normal HCO3 levels, indicating respiratory alkalosis. In this condition, there is excessive loss of carbon dioxide (as seen by the low PaCO2) leading to a decrease in carbonic acid concentration and subsequent increase in pH. Metabolic acidosis or alkalosis would involve primary changes in bicarbonate levels, which are not predominant in this case.

2. What is the best position for examining the rectum?

A. Prone
B. Sim's
C. Knee-chest
D. Lithotomy

Correct answer: C

Rationale: The knee-chest position is the most optimal position for examining the rectum. In this position, the patient kneels on the examination table with their chest resting on it, creating a straight line from the head to the lower back. This position allows for easier access and visualization of the rectal area, making it the preferred choice for rectal examinations. Prone position (choice A) is lying face down and is not ideal for rectal exams as it does not provide good access. Sim's position (choice B) is lying on the left side with the right knee and thigh flexed, also not ideal for rectal exams. Lithotomy position (choice D) is lying on the back with legs flexed and feet in stirrups, primarily used for gynecological exams and surgery, not for rectal examinations.

3. A client is experiencing preterm contractions and dehydration. Which of the following statements should the nurse make?

A. Dehydration is treated with calcium supplements.
B. Dehydration can increase the risk of preterm labor.
C. Dehydration is associated with gastroesophageal reflux.
D. Dehydration is caused by decreased hemoglobin and hematocrit.

Correct answer: B

Rationale: Dehydration can lead to an imbalance in electrolytes and cause uterine irritability, potentially leading to preterm contractions. It is essential for the nurse to educate the client on the importance of adequate hydration to reduce the risk of preterm labor. The statement 'Dehydration can increase the risk of preterm labor' directly addresses the client's condition and provides relevant information for their understanding and management of the situation.

4. Which of the following is not a cause of tachycardia?

A. Fever
B. Exercise
C. Sympathetic nervous system stimulation
D. Parasympathetic nervous system stimulation

Correct answer: D

Rationale: Tachycardia is an increased heart rate, and it can be caused by various factors such as fever, exercise, and sympathetic nervous system stimulation, all of which tend to increase heart rate. However, parasympathetic nervous system stimulation typically slows the heart rate, making it the exception among the choices provided. Thus, parasympathetic nervous system stimulation is not a cause of tachycardia.

5. For a rectal examination, the patient can be directed to assume which of the following positions?

A. Genupectoral
B. Sims
C. Horizontal recumbent
D. All of the above

Correct answer: B

Rationale: The correct position for a rectal examination is the Sims position, where the patient lies on their left side with the upper knee flexed. This position allows for easy access and visualization of the rectal area for examination.