Pathophysiology 4450
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1. Mr. Appel has severe chronic obstructive pul- C. Respiratory Acidosis
monary disease (COPD). He is admitted to the hos-
pital with the complaint of increasing dyspnea, Respiratory acidosis is a med-
increased sputum, anxiety, and diaphoresis. He ical emergency in which decreased
states he feels weak and tired. He routinely takes ventilation (hypoventilation) in-
a diuretic (Lasix) and his pulmonary medications. creases the concentration of car-
The following laboratory values are obtained: bon dioxide in the blood and de-
creases the blood's pH (a condition
pH 7.25; PO2 60; PCO2 78; HCO3 30 generally called acidosis).
Sodium 140 mEq/L
Potassium 2.0 mEq/L
Chloride 105 mEq/l
NORMS:
pH 7.35-7.45
O2: 80-100 mm Hg
CO2: 35-45 mm Hg
HCO3 (Bicarbonate): 21-27 mEg/L
Sodium Na+: 135-145 mEg/L
Potassium K+: 3.5-5.0 mEg/L
Chloride Cl-: 96-106 mEg/L
1. What type of acid-base imbalance does Mr. Ap-
pel have?
A. Respiratory Alkalosis
B. Metabolic Acidosis
C. Respiratory Acidosis
D. Metabolic Alkalosis
2. Mr. Appel has severe chronic obstructive pul- A. CO2 Retention
monary disease (COPD). He is admitted to the hos-
pital with the complaint of increasing dyspnea, Respiratory acidosis is a med-
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