Acid Base Balance Flashcards
what does acid base balance maintain
homeostasis
what is the definition of acid base balance
process of regulating ph, bicarb concentration, and partial pressure of co2 of body fluids
what is bicarb
base
takes up acid to create balance
what is acid base balance measured by
ph
acids are constantly…
being produced
co2 and H+
examples of acid excretion
exhalation and urination
what usually causes acid base imbalance
underlying condition
chronic conditions that cause acid base imbalance
copd- chronic resp acidosis
kidney disease- chronic metabolic acidosis
how does the body maintain optimal acid-base balance
acid excretion keeps up with production
buffers- HCo3- keeps up with acid production
what is respiratory acidosis
too much carbonic acid (co2)
loss of base
conditions that can cause resp acidosis
copd
asthma
narcotic overdose
pneumonia
pulmonary edema
gullian barre
what is metabolic acidosis
metabolic acid (H+) retention/ingestion or bicarb HCo3 loss
conditions that can cause metabolic acidosis
diabetic ketoacidosis
diarhhea
starvation ketoacidosis
sepsis
renal disease
thyroid storm
oliuria
what is respiratry alkalossi
co2 loss
what are some conditions that cause resp alkalosis
hyperventilation
anxiety
pain
hypoxic
head injury
what is metabolic alkalosis
bicarb excess or H+ loss
conditions that can cause metabolic alkalosis
ng tubes
vomiting
antacids
diuretics
what physiological consequences occur when compensatory mechanisms fail
altered cell fxn
acidosis: decreased LOC quickly
alkalosis: alters LOC and other neuro manifestations: may cause dysrhythmias
what history would you take
vomiting/diarhhea
drugs
alc
keto diet
losing wt
meds/supplements
physical assessment (resp and renal fx)
who is at risk
very young and very old
what is normal ph
7.35-7.45
what is normal paco2
35-45
what is normal hco3
22-26
treatment strategies always start by treating ….. causing disturbance
underlying
problems caused by an underlying resp condition require
resp support
problems caused by an underlying metabolic condition require
fluid and electrolyte support
interventions often include managing a …. disturbance as well
fluid and electrolyte