A nurse is reviewing laboratory results for a client who has metabolic alkalosis. Which of the following blood gas values should the nurse expect?
pH 7.36 (7.35 to 7.45), PaCO2 38 mm Hg (35 to 45 mmHg) HCO3 25 mEq/L (22 to 26 mEq/L)
pH 7.48 (7.35 to 7.45), PaCO, 32 mm Hg (35 to 45 mm Hg). HCO3 24 mEq/L (22 to 26 mE q/L)
pH 7.46 (7.35 to 7.45). PaCO2 36 mm Hg (35 to 45 mm Hg). HCO3 29 mEq/L (22 to 26 mEq/L)
pH 7.26 (7.35 to 7.45). PaCO, 35 mm Hg (35 to 45 mm Hg). HCO3 18 mEq/L (22 to 26 mEq/L)
The Correct Answer is C
A) pH 7.36 (7.35 to 7.45), PaCO2 38 mm Hg (35 to 45 mmHg), HCO3 25 mEq/L (22 to 26 mEq/L): This is a normal set of arterial blood gas (ABG) values, with a pH within normal range, a normal PaCO2, and a normal HCO3. It does not suggest metabolic alkalosis.
B) pH 7.48 (7.35 to 7.45), PaCO2 32 mm Hg (35 to 45 mm Hg), HCO3 24 mEq/L (22 to 26 mEq/L): Although the pH is elevated, indicating alkalosis, the PaCO2 is slightly low, and the bicarbonate (HCO3) is within the normal range. This set of values does not indicate metabolic alkalosis, but could indicate respiratory alkalosis or compensated alkalosis.
C) pH 7.46 (7.35 to 7.45), PaCO2 36 mm Hg (35 to 45 mm Hg), HCO3 29 mEq/L (22 to 26 mEq/L): This is consistent with metabolic alkalosis. The elevated pH (alkalosis) combined with an increased bicarbonate level (HCO3 > 26 mEq/L) and a normal PaCO2 suggests metabolic alkalosis, as the kidneys retain bicarbonate to compensate for the condition.
D) pH 7.26 (7.35 to 7.45), PaCO2 35 mm Hg (35 to 45 mm Hg), HCO3 18 mEq/L (22 to 26 mEq/L): This set of values indicates acidosis, not alkalosis. The pH is low, indicating acidosis, and the bicarbonate (HCO3) is also low, which suggests metabolic acidosis. The PaCO2 is normal, which further supports a metabolic origin of the acidosis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A) I have a difficult time getting my child to eat green vegetables: While it’s common for preschoolers to be selective about food, especially vegetables, this issue does not represent an immediate concern for the child’s health or development. This issue can often be addressed with strategies to encourage healthy eating, but it is not as urgent as other concerns.
B) My child continually asks me the same questions: Repetitive questioning is a normal part of preschool development, as children at this age are curious and often seek reassurance. It reflects their cognitive development as they try to understand the world around them. While it may be tiring for the guardian, it is not an immediate concern.
C) My child still wets the bed at least two times per week: Bedwetting (enuresis) is common among preschool-aged children, and many children do not gain full bladder control until after age 5. This issue is typically addressed if it continues past the age of 5, but it is not a priority at this time.
D) I have noticed that my child is withdrawn since we switched day care providers: This statement indicates a potential emotional or behavioral issue that requires immediate attention. Changes in behavior, such as withdrawal, can be a sign of stress, anxiety, or difficulty adjusting to a new environment. The nurse should prioritize this concern, as it may indicate that the child is having difficulty coping with the transition and may need additional support or evaluation. Addressing emotional well-being is a priority for the nurse.
Correct Answer is B
Explanation
A) "I should position the car seat's retainer clip at the level of my baby's belly button.": This statement is incorrect. The retainer clip of the car seat should be positioned at the level of the baby's armpits, not the belly button. Proper placement of the retainer clip ensures the safety harness fits securely across the baby's chest, reducing the risk of injury during a crash.
B) "I should keep my baby rear-facing in the car seat until she is 2 years old.": This statement is correct and aligns with current guidelines from organizations such as the American Academy of Pediatrics (AAP). Infants and toddlers should remain in a rear-facing car seat until they are at least 2 years old or until they reach the maximum height or weight limit allowed by the car seat manufacturer for rear-facing use. Rear-facing is the safest position for infants and provides the best protection for their developing head, neck, and spine.
C) "I should enable the airbag when my baby is in the front seat of the car.": This statement is incorrect. Infants and young children should never ride in the front seat of a car with an active airbag, as airbags can cause serious injury or death in the event of a collision. Children should always be placed in the back seat, ideally in a rear-facing car seat, to minimize risk.
D) "I should place my baby in the car seat at a 90-degree angle.": This statement is incorrect. A car seat should be installed at a slight recline to ensure that the baby's airway remains open and to prevent their head from falling forward. A 45-degree angle is typically recommended for newborns, although this can vary based on the specific car seat model and the baby's size.
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