Lab Values Clinical Significance

Question 1

what SpO2 level requires supplemental O2?

Answer 1

88-90%

Question 2

when is PaO2 increased?

Answer 2

hyperoxygenation

Question 3

when is PaO2 decreased?

Answer 3

-Cardiac decompensation
-COPD
-Some NM disorders

Question 4

when is PaCO2 increased?

Answer 4

-COPD
-Hypoventilation

Question 5

when is PaCO2 decreased?

Answer 5

-Hyperventilation
-Pregnancy
-PE
-Anxiety

Question 6

When does blood pH increase?

Answer 6

-Resp alkalosis
-Metabolic alkalosis

Question 7

Causes of respiratory alkalosis

Answer 7

-Hyperventilation
-Sepsis
-Liver disease
-Fever

Question 8

Causes of metabolic alkalosis

Answer 8

-Vomiting
-Potassium depletion
-Diuretics
-Volume depletion

Question 9

when does blood pH decrease?

Answer 9

-Respiratory acidosis
-Metabolic acidosis

Question 10

causes of respiratory acidosis

Answer 10

-Hypoventilation
-COPD
-Respiratory depressants
-Myasthenia

Question 11

causes of metabolic acidosis/bicarbonate deficit

Answer 11

-Inc acids (DM, alcohol, starvation)
-Renal failure
-Loss of alkaline body fluids

Question 12

when does prothrombin time (PT) increase?

Answer 12

-Factor X deficiency
-Hemorrhagic disease
-Cirrhosis
-Hepatitis drugs (warfarin)

Question 13

when does partial thromboplastin time (PTT) increase?

Answer 13

Factor VIII, IX, X deficiency

Question 14

physical therapy considerations for pts w/ inc INR

Answer 14

-Look for active signs of bleeding
-Use compensatory strategies to reduce fall risk