Solved Solutions 2025-2026 Edition.
pH - Answer 7.35-7.45
pH less than 7.35 is acidic
pH greater than 7.45 is alkalotic
CO2 - Answer 35-45 (Respiratory)
Less than 35 is alkalotic
Greater than 45 is acidic
HCO3 - Answer 22-26 mEq/L (Metabolic)
Less than 22 is acidic
Greater than 26 is alkalotic
respiratory acidosis - Answer variable respirations: Retention of CO2.
Causes: respiratory depression, inadequate chest expansion, airway obstruction,
opioids/anesthetics, electrolyte imbalance.
Hallmark is decreased PaO2 with rising PaCO2.
Priority: Focus on improving ventilation and oxygenation, maintain patent airway.
Respiratory alkalosis - Answer increased rate in depth: excessive loss of CO2
Causes: Loss of gastric fluids, decreased potassium intake, diuretics, fever, salicylate toxicity.
Hyperventilation, anxiety, fear, improper vent settings.
Hallmark is increased pH with low CO2. O2 and HCO3 usually normal.
, Causes: Diarrhea, kidney failure, DKA.
overproduction/under elimination of hydrogen ions and underproduction/over elimination of
bicarb.
Hallmark: pH <7.35, HCO3 <21. O2 normal and CO2 normal or slightly decreased.
Priority: hydration and monitoring.
Metabolic alkalosis - Answer decreased effort due to muscle weakness
Causes: acide deficit d/t prolonged vomiting, excess cortisol, hyperaldosteronism, thiazide
diuretics, prolonged NG suction.
Hallmark: pH >7.45, HCO3 > 28. Normal O2 and CO2.
Priority: Fall prevention d/t muscle weakness and hypotension.
Metabolic alkalosis example - Answer If the pH and the HCO3 are alkalotic, the acid/base
disturbance is cause by the metabolic system.
Respiratory acidosis - Answer If the pH and the CO2 are acidotic, the acid/base disturbance is
caused by the respiratory system
In ABG's compensated means - Answer the acid base balance of pH is within normal range
ABG's - Answer ordered to asses the pH balance
In ABG's the Respiratory system is - Answer quick to compensate (minutes to hours)
In ABG's the Metabolic system is - Answer slow to compensate (2-3 days)
peripheral arterial disease (PAD) - Answer Educate Pt to dangle legs (elevation hurts), sharp
and worse pain at night. Rest pain = intermittent claudication.