Biochemistry

Question 1

Sensitivity

Answer 1

percentage of people with a disease with a positive test for that disease

Question 2

Specificity

Answer 2

percentage of people without a disease who have a negative test for that disease

Question 3

Prevalence

Answer 3

A measure of how common the disease is in the population of people who have been tested for the disease
People with disease + all the people who have been tested

Question 4

Acidosis

Answer 4

increase H+ conc

Question 5

Alkalosis

Answer 5

Decrease H+ conc

Question 6

Respiratory component

Answer 6

pCO2

Question 7

Metabolic component

Answer 7

HCO3-

Question 8

Respiratory acidosis

Answer 8

Increase in H+ conc
Increase in pCO2
EG: choking, COPD

Question 9

Respiratory alkalosis

Answer 9

Decrease in H+ conc
Decrease in pCO2
EG: PE, mechanical over-ventilation, anxiety, pain

Question 10

Metabolic acidosis

Answer 10

Increase in H+ conc
Decrease in HCO3 (as it’s used up by the H+)
EG: over production of acid

Question 11

Metabolic alkalosis

Answer 11

Decrease in H+ conc (loss of acid, alkali surplus)
Increase in HCO3
EG: vomiting (loose acid causing an increase in bicarbonate)

Question 12

Compensation

Answer 12

Too much H+ , lungs blow off CO2 to restore ratio
Too much CO2, kidneys get rid of H+ to restore ratio.

If primary mechanism is resp then compensatory mechanism will be metabolic

Question 13

Resp compensation for metabolic acidosis

Answer 13

Too much H+
Compensate by blowing off CO2.
Resp compensation occurs quickly

Question 14

Metabolic compensation for resp acidosis

Answer 14

too much CO2
get rid of H+
Metabolic compensation occurs slowly

Question 15

Fully compensated

Answer 15

pH is within normal ranges

Question 16

Partially compensated

Answer 16

pH is outwit normal range

Question 17

pO2

Answer 17

If pO2 is in the information and it is LOW then it suggests the RESP system isn’t working well