5A: Acid/Base Flashcards
What is normal pH?
7.35-7.45
What is acidic pH?
< 7.35
What is alkalotic pH?
> 7.45
What two systems can cause an acid/base imbalance?
Respiratory and metabolic
What is the relationship between CO2 and pH?
Inverse
What is the relationship between HCO3- and pH?
Direct
What happens with acid/base compensation to fix an imbalance?
Compound moves in the direction the other one did to stabilize pH
What is the normal value for CO2?
35-45 mmHg
What is the normal value for HCO3-?
23-29 mEq/L
What is the normal value for PO2?
75-100 mmHg
Describe normal conditions in relation to CO2, pH, and HCO3
CO2: 35-45
pH: 7.35-7.45
HCO3: 23-29
What happens during Acute Respiratory Acidosis?
CO2: > 45
pH: < 7.35
HCO3: Normal
What happens during Acute Respiratory Alkalosis?
CO2: < 35
pH: > 7.45
HCO3: Normal
What happens during Acute Metabolic Acidosis?
CO2: Normal
pH: < 7.35
HCO3: < 23
What happens during Acute Metabolic Alkalosis?
CO2: Normal
pH: > 7.45
HCO3: > 29
What direction do CO2 and HCO3 move in during compensation?
The same direction
What happens during Compensated Respiratory Acidosis?
CO2: > 45
pH: Normal
HCO3: > 29
What happens during Compensated Respiratory Alkalosis?
CO2: <35
pH: Normal
HCO3: < 23
What happens during Compensated Metabolic Acidosis?
CO2: < 35
pH: Normal
HCO3: < 23
What happens during Compensated Metabolic Alkalosis?
CO2: > 45
pH: Normal
HCO3: > 29
What are the causes of Respiratory Acidosis?
Alveolar hypoventilation from head injury, anoxia, drug overdose, anything that retains CO2
What are the symptoms of Respiratory Acidosis?
Anxiety, headache, dyspnea, confusion, coma
What are the causes of Respiratory Alkalosis?
Alveolar hyperventilation, anything that causes decreased CO2
What are the symptoms of Respiratory Alkalosis?
Tingling, numbness, syncope
What are the causes of Metabolic Acidosis?
Diabetic ketoacidosis, lactic or uremic acidosis, prolonged diarrhea
What are the symptoms of Metabolic Acidosis?
Vomiting, dysarrhythmia, lethargy, coma
What are the causes of Metabolic Alkalosis?
Bicarbonate ingestion, too much diuresis causing dehydration, vomiting