ABG Test Questions and Answers with Verified Solutions
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ABG Test Questions and Answers with
Verified Solutions
1. George Kent, a 54-year-old widower with a history of chronic obstructive pulmonary disease,
arrived at the emergency department due to worsening shortness of breath, fever, and a
productive cough. His ability to complete sentences wa...
ABG Test Questions and Answers with
Verified Solutions
1. George Kent, a 54-year-old widower with a history of chronic obstructive pulmonary disease,
arrived at the emergency department due to worsening shortness of breath, fever, and a
productive cough. His ability to complete sentences was impaired. According to his son Jacob,
he has been unwell for three days. Physical examination revealed crackles and wheezes in the
lower lobes, along with tachycardia and a bounding pulse. Arterial blood gas analysis showed pH
7.3, PaCO2 68 mm Hg, HCO3 28 mmol/L, and PaO2 60 mm Hg. What is your interpretation?
A. Uncompensated Respiratory Acidosis
B. Partially Compensated Respiratory Acidosis
C. Uncompensated Metabolic Alkalosis
D. Partially Compensated Metabolic Acidosis ✔✔
Answer: B. Partially Compensated Respiratory Acidosis
Explanation: The patient exhibits respiratory acidosis (elevated carbon dioxide levels) due to an
acute exacerbation of chronic obstructive pulmonary disease, with partial compensation.
,2. Carl, an elementary student, was admitted to the hospital after experiencing vomiting and
decreased consciousness. He displays Kussmaul breathing, lethargy, and signs of dehydration,
including sunken eyes and dry mucous membranes. He has a two-week history of polydipsia,
polyuria, and weight loss. Arterial blood gas analysis showed pH 7.0, PaO2 90 mm Hg, PaCO2
23 mm Hg, and HCO3 12 mmol/L; electrolytes include Na+ 126 mmol/L, K+ 5 mmol/L, and Cl-
95 mmol/L. What is your assessment?
A. Uncompensated Respiratory Acidosis
B. Partially Compensated Respiratory Acidosis
C. Uncompensated Metabolic Alkalosis
D. Partially Compensated Metabolic Acidosis ✔✔
Answer: D. Partially Compensated Metabolic Acidosis
Explanation: The student is diagnosed with diabetes mellitus, presenting with metabolic acidosis
(low HCO3-) and respiratory compensation (low CO2).
3. A cigarette vendor was brought to the emergency department after falling and injuring her left
leg. She is noted to be tachycardic and tachypneic, and was administered painkillers for her
discomfort. Subsequently, she complained of ongoing pain and began experiencing muscle
, cramps, tingling, and paraesthesia. Arterial blood gas analysis reveals pH 7.6, PaO2 120 mm Hg,
PaCO2 31 mm Hg, and HCO3 25 mmol/L. What does this indicate?
A. Uncompensated Respiratory Alkalosis ✔✔
B. Partially Compensated Respiratory Acidosis
C. Uncompensated Metabolic Alkalosis
D. Partially Compensated Metabolic Alkalosis
Answer: A. Uncompensated Respiratory Alkalosis
Explanation: The primary issue is acute respiratory alkalosis (low CO2) induced by pain and
anxiety, causing hyperventilation without sufficient time for metabolic compensation.
4. Ricky's grandmother has been experiencing persistent vomiting for two days, resulting in
lethargy, weakness, myalgia, and signs of dehydration. Arterial blood gas analysis shows pH 7.5,
PaO2 85 mm Hg, PaCO2 40 mm Hg, and HCO3 34 mmol/L. What acid-base disorder is present?
A. Uncompensated Respiratory Alkalosis
B. Partially Compensated Respiratory Acidosis
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