A nurse is caring for a client whose arterial blood gas results show the following results:. pH: 7.2. PaCO2: 50 mm Hg. HCO3: 24 mEq/L. The nurse should identify the client is experiencing which of the following acid-base conditions?
Respiratory acidosis.
Metabolic alkalosis.
Metabolic acidosis.
Respiratory alkalosis.
The Correct Answer is A
Choice A rationale:
The client's arterial blood gas (ABG) results indicate a low pH (acidemia) and high PaCO2, which is characteristic of respiratory acidosis. Respiratory acidosis occurs when there is inadequate removal of carbon dioxide (CO2) from the body, leading to an accumulation of CO2 and a decrease in pH. In this case, the high PaCO2 (50 mm Hg) indicates that the client is retaining carbon dioxide, likely due to impaired ventilation. The normal pH range is 7.35 to 7.45, and the normal PaCO2 range is 35 to 45 mm Hg. These ABG values reflect an acid-base imbalance in the respiratory system, specifically, respiratory acidosis.
Choice B rationale:
Metabolic alkalosis is characterized by an elevated pH and an increase in bicarbonate (HCO3) levels. This is not the condition described in the client's ABG results, as the pH is low (acidemic) and HCO3 levels are within the normal range (24 mEq/L).
Choice C rationale:
Metabolic acidosis is characterized by a low pH and a decreased HCO3 level. The client's ABG results do not align with metabolic acidosis since the pH is low (acidemic) and the HCO3 level is within the normal range (24 mEq/L).
Choice D rationale:
Respiratory alkalosis is characterized by a high pH and low PaCO2. The client's ABG results do not match this condition as the pH is low (acidemic) and the PaCO2 is high (50 mm Hg), indicating respiratory acidosis. Therefore, choice A, respiratory acidosis, is the correct interpretation of the ABG results.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","C","D","E"]
Explanation
Choice A rationale:
Dyspnea is a common finding in clients with emphysema. Emphysema is a chronic obstructive pulmonary disease (COPD) characterized by the destruction of the alveoli in the lungs, leading to difficulty breathing and shortness of breath. The loss of alveoli reduces the surface area for gas exchange, causing dyspnea.
Choice B rationale:
Bradycardia is not typically associated with emphysema. In fact, it is more common for clients with emphysema to have an increased heart rate (tachycardia) due to the body's compensatory response to low oxygen levels in the blood.
Choice C rationale:
Clubbing of the fingers is often seen in clients with chronic respiratory conditions like emphysema. It is a result of chronic hypoxia and is characterized by the abnormal rounding and thickening of the fingertips and nail beds.
Choice D rationale:
Barrel chest is a common physical finding in clients with emphysema. It is characterized by an increase in the anteroposterior diameter of the chest due to overinflation of the lungs. This change in chest shape is a result of chronic air trapping and hyperinflation, which are hallmarks of emphysema.
Choice E rationale:
Shallow respirations are expected in clients with emphysema. Due to the loss of alveolar elasticity and increased airway resistance, clients with emphysema tend to take shallow breaths, which are less effective for oxygen exchange.
Correct Answer is C
Explanation
Choice A rationale:
"Pitting edema of the lower legs.”. Pitting edema is a common sign of congestive heart failure (CHF), and it often occurs bilaterally in the lower extremities. While this is a potential finding in left-sided heart failure, it is not specific to it.
Choice B rationale:
"Jugular venous distention.”. Jugular venous distention (JVD) is more indicative of right-sided heart failure or elevated central venous pressure. It is not a typical finding in left-sided heart failure.
Choice C rationale:
"Shortness of breath while lying down.”. This is a classic symptom of left-sided heart failure, known as orthopnea. When the patient lies flat, fluid that has accumulated in the lungs can lead to difficulty breathing. Patients with left-sided heart failure often find relief by sleeping with their upper body elevated.
Choice D rationale:
"Right upper quadrant pain.”. Right upper quadrant pain is not a typical finding in left-sided heart failure. It may be associated with issues related to the liver or gallbladder but is not directly related to heart failure.
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