ABGs Flashcards
The which test checks for ulnar artery patency?
allen test
arterial blood is typically drawn from…
radial artery
how long for results from ABGs?
5-15 min
normal range pO2
80-100
pO2 is used for what reason?
determine how well patient is oxygenating, more reliable than pulse-ox
5 causes of …
lung/pleural dz neuromuscular dz chest wall dysfxn drugs CNS/trauma
respiratory acidosis
Respiratory acidosis is a result of…
hypoventilation
A patient presents with hypercapnia: AMS, dyspnea, hemodynamic instability…
respiratory acidosis
How do you treat respiratory acidosis?
underlying cause, BiPAP
Respiratory alkalosis is a result of…
hyperventilation
The following can cause…
- anxiety, pain
- sepsis, fever
- pregnancy
- salicylate intoxication
- hypoxemia, high altitude
respiratory alkalosis
A patient resents with:
- tachypnea
- palpitations
- light-headeadness
- paresthesia…
respiratory alkalosis
normal anion gap…
8-12
what ions are included in anion gap?
Na, Cl, HCO3
What can cause an elevated anion gap?
MUDPILES
methanol uremia DJA propylene glycol iron/Isoniazid lactate ethylene glycol salicylate/starvation
The below cause…
bicarb loss via diarrhea, pancreatic loss, GI fistula, RTA
non-anion gap
A patient presents with…
compensatory hyperventilation
tachycardia, arrhythmia,
hyperkalemia
AMS
metabolic acidosis
What are three ways to manage metabolic acidosis?
tx underlying dz
dialysis
bicarb
Gain or loss of ____ or _____ respectively can cause metabolic alkalosis.
bicarb gain, hydrogen ion loss
When you suspect metabolic alkalosis, what lab should be checked?
urine chloride
urine chloride < _____ is considered responsive…
20
responsive metabolic alkalosis can be caused by what two things? What is the tx?
GI losses (vomiting, suction) diuretics
tx: fluid
The below conditions would cause a urine chloride _____
hyperaldosteronism cushings renin tumor hypokalemia citrate toxicity (transfusion)
(tx underlying cause +/- potassium)
> 20 is unresponsive.
With mixed acid-base disorders, you can have what number of disorders all at once?
3 (metabolic alkalosis/acidosis, but only one respiratory disorder)
