A nurse is reviewing the laboratory results of a client who was an unrestrained passenger in a motor-vehicle crash. The ABG results are as follows: pH 7.32, HCO3 24 mEq/L, PaCO2 48 mm Hg. The nurse should identify the client is experiencing which of the following acid-base imbalances?
Respiratory acidosis
Metabolic acidosis
Respiratory alkalosis
Metabolic alkalosis
The Correct Answer is A
A) Respiratory acidosis: This condition is indicated by a low pH (7.32) and an elevated PaCO2 (48 mm Hg), while HCO3 remains normal (24 mEq/L). Respiratory acidosis occurs when there is an accumulation of carbon dioxide in the blood, usually due to hypoventilation or impaired gas exchange in the lungs.
B) Metabolic acidosis: Metabolic acidosis is characterized by a low pH and a decreased HCO3 level. In this scenario, the HCO3 level is normal, ruling out metabolic acidosis.
C) Respiratory alkalosis: Respiratory alkalosis is indicated by a high pH and a decreased PaCO2. In this case, the pH is low, and the PaCO2 is elevated, which contradicts the characteristics of respiratory alkalosis.
D) Metabolic alkalosis: Metabolic alkalosis would show a high pH and an elevated HCO3 level. Since the pH is low and the HCO3 is normal, this condition does not fit the criteria for metabolic alkalosis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A) Muscle twitching:
Muscle twitching, also known as tetany, is a common manifestation of hypocalcemia. Low calcium levels increase neuromuscular excitability, leading to symptoms such as muscle cramps, spasms, and twitching. This is a key clinical sign that helps in diagnosing hypocalcemia.
B) Bounding pulse:
A bounding pulse is not typically associated with hypocalcemia. Instead, it is more often seen in conditions such as fluid overload or hyperdynamic circulatory states, where there is increased cardiac output or vascular volume.
C) Hypertension:
Hypertension is not a common manifestation of hypocalcemia. Hypocalcemia is more likely to cause hypotension due to its effect on cardiac contractility and vascular tone, rather than causing high blood pressure.
D) Decreased bowel sounds:
Decreased bowel sounds are not commonly associated with hypocalcemia. Hypocalcemia affects neuromuscular function, but it typically causes increased gastrointestinal motility rather than decreased motility, which would lead to hyperactive bowel sounds rather than decreased ones.
Correct Answer is A
Explanation
A) Impaired coordination:
Impaired coordination is a common manifestation of hypothermia. As the body temperature drops, the nervous system is affected, leading to difficulties in motor control and coordination. This symptom is indicative of the body's struggle to maintain normal physiological functions in response to the cold.
B) Sensitivity to light:
Sensitivity to light is not typically associated with hypothermia. This symptom is more commonly related to conditions affecting the eyes or the central nervous system, such as migraines or meningitis.
C) Increased respiratory rate:
Hypothermia generally leads to a decreased respiratory rate as the body's metabolic processes slow down. An increased respiratory rate is not a common symptom and may indicate another underlying condition or a compensatory mechanism for another issue.
D) Hypertension:
Hypertension is not a typical manifestation of hypothermia. In fact, as hypothermia progresses, the body's blood pressure often decreases due to reduced cardiac output and peripheral vasoconstriction.
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