Biochemistry Flashcards
1
Q
Define accuracy
A
- how close the results is to the actual “true” value
2
Q
Define percision
A
- how close the results are to each other (reproducibility)
3
Q
What mechanisms are in place to regulate H+ ions?
A
- need to be excreted in urine
4
Q
Explain the bicarbonate equation
A
H+ + HC03 –> H20 + CO2
5
Q
What is the hydrogen ion concentration inversely proportional to?
A
- inversely proportional to the HCO3 concentration
6
Q
What is the pCO2 concentration proportional to?
A
- H+ ion concentration
7
Q
pCO2 is a ________ component
A
- respiratory component
8
Q
HCO3 is a _______ component
A
- metabolic component
9
Q
Explain respiratory acidosis
A
- high H+
- Due to high CO2
10
Q
Explain metabolic alkalosis
A
- low H+
- due to high HCO3
11
Q
What does compensation mean?
A
- when you have got too much H+ the lungs blow off the additional CO2
- When you have to much CO2 the kidneys excrete the extra H+
12
Q
What may be some of the causes of respiratory acidosis?
A
- Bronchopneumonia
- chocking
- asthma/copd
13
Q
What may be some of the causes of respiratory alkalosis
A
- over ventilation
- hysterical overbreathing
- increased intracranial pressure
14
Q
What may be some of the causes of metabolic acidosis?
A
- impaired H+ excretion
- increased H+ secretion
15
Q
What may be some of the causes of metabolic alkalosis?
A
- loss of H+ in vomit
- potassium deficiency
16
Q
What questions do you ask yourself when looking at ABGs?
A
- H+ is it normal (pH)
- Look at pCO2
- Look at HCO3
