ABG (exam 2)

  1. if its acidic
    • more H+
    • less HCO3
    • More CO2
    • decrease RR
    • Increase PCO2
  2. if its basic
    • less H+
    • More HCO3
    • less CO2
    • increase RR
    • decrease PCO2
  3. bicarb = ?
    kidneys
  4. buffer system
    • minimizes the effects of acids
    • transferes them into weaker acids so they can be excreted by the kidneys
  5. which system is the first responder
    buffer system
  6. buffer system requires cooporation of the
    lungs and kidneys
  7. in the buffer system the body secretes ___ which combines with_____ in the ___ to form waste products __ and ___. the lungs can then excrete ____ and the end result is ____
    • hydrochloric acid
    • blood
    • CO2 and H2O
    • CO2
    • PH rises
  8. how does respiratory system work
    • lungs receive a signal from the medulla that the blood is too acidic
    • blood circulates through the pulmonary capillaries
    • CO2 is pulled out and exhaled
  9. is respiratory long or short term support
    long
  10. how do kidneys adjust the ph of blood
    collect and reabsorb bicarb and excrete acid in the urine
  11. the ph of urine
    as low as 4 and as high as 8
  12. conditions that cause respiratory acidosis
    • copd
    • oversedation
    • chest wall abnormality
    • mechanical hypoventalation
  13. when co2 levels increase_________
    kidneys receive a signal to conserve more bicarb. 24 hrs later the ph will rise
  14. uncompensated respiratory acidosis
    • high co2
    • normal bicarb
  15. compensated respiratory acidosis
    • high co2
    • high bicarb
  16. respiratory acidosis s/s
    • hypo
    • rapid, shallow
    • decrease bp
    • vasodialation
    • dyspnea
    • headache
    • hyperkalemia
    • dysrhythmia(increase in K)
    • cant catch breath
    • muscle weakness
    • drowsy
    • dizzy disorienteed
  17. respiratory alkalosis conditions
    • PE
    • anxiety
    • fear
    • mechanical hyperventilation
  18. during acute respiratory alkalosis
    buffer system kicks in and shifts bicarb out of blood and into cells
  19. during chronic respiratory alkalosis
    • "pulmonary fibrosis"
    • kidneys can excrete more bicarb into the urine
  20. respiratory alkalosis s/s
    • seizure
    • deep, rapid
    • hypervent
    • tachy
    • low or nolethargy
    • confusion
    • n/vrm bp
    • hypokalemia
    • numb, tingle
  21. how to metabolic imbalances occur
    when disease process overwhelms the bodys ability to balance acid and base levels and kidneys and lungs are unable to keep up
  22. metabolic acidosis conditions
    • dka
    • starvation
    • diarrhea
    • kidney failure
    • shock
  23. metabolic acidosis s/s
    • headache
    • decrease bp
    • hyperkalemia
    • muscle twitch
    • warm, flushed skin
    • n/v
    • LOC
    • kussmal
  24. metabolic alkalosis conditions
    • prolonged vomit
    • excessive gastric suction
    • ingestion of baking soda
  25. metabolic alkalosis s/s
    • restless
    • tachycardia
    • tremors
    • hypokalemia
    • compensatory hypovent
    • confusion
    • n/v
  26. treatment
    • correct underlying problem
    • treat disease
    • administer antidote
    • monitor abgs
  27. abg values
    • ph: 7.35-7.45
    • pco2(respiratory):  35-45
    • HCO3(metabolic): 22-26
Author
ChelseaL
ID
342810
Card Set
ABG (exam 2)
Description
ABG (exam 2)
Updated