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NUR 205 exam 3 Acid base balance questions with verified answers.
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NUR 205 exam 3 Acid base balance questions with verified answers.NUR 205 exam 3 Acid base balance questions with verified answers.
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NUR 205 exam 3 Acid base balance questions with verifiedanswers.
Acid base balance - ANS regulating pH, bicarbonate concentration, and partial pressure
of carbon dioxide of body fluids
-regulated to maintain normal pH
-lungs and kidneys
ph level in body - ANS 7.35-7.45
low is acidic
high is basic
importance of pH - ANS -degree of acidity
-if H+ is high= pH is low
-if H+ is low= pH is high
Hydrogen ions are expressed as pH
Buffers - ANS immediately blunts pH change
Ventilation - ANS rapid response, eliminates 75% of acid
Renal regulation - ANS slow-takes days
Acid - ANS a substance that releases/ contains H+ ions
-H+ is donor = gives up to neutralize or decrease strength of an acid
-produced as an end product of metabolism of protein, carbs, and fat
Base - ANS substance that takes up H+
-contains no H+
-H+ acceptors= from acids neutralize or decrease strength of base or form weaker acid
elimination of bases - ANS loss of intestinal or colonic fluid results in loss of base
-urine can be slightly basic (8.0)
Acid production - ANS generation of acid through cellular metabolism
Carbonic acid - ANS cellular metabolism generates carbonic acid- waste product
-breaks to form CO2 and H2O
-found in lungs
Metabolic acid - ANS all other types of acids produced by cellular metabolism
-found in kidneys
Acid intake - ANS Occurs occasionally
-entry into body of acids or substances that body converts to acid
, Acid buffering - ANS body fluids resist large changes in pH when acids or bases are
added or removed;
-goal is to keep blood and body fluids in normal range
-typically fast acting
-provides immediate protection against changes in pH
Respiratory system (lungs) - ANS compensates by increasing ventilation to expire CO2
or by decreasing ventilation to retain CO2
Renal system (kidneys) - ANS compensates by producing acidic or alkaline urine
bicarbonate buffer system (compensation) - ANS most important buffer system that
keeps blood pH from changing drastically
-if bicarbonate decreases so does carbonic acid= ph turns back to normal
Acid excretion - ANS - removal of acid from body
- lungs excrete carbonic acid
- kidneys excrete metabolic acids
-Hyperventilation excretes more than hypoventilation
Acidosis - ANS too much acid
respiratory = too much carbonic acid
Metabolic= too much metabolic acid
Alkalosis - ANS too little acid
-respiratory= too little carbonic acid
-metabolic= too little metabolic acid
Respiratory system - ANS Controls Carbonic acid
-RR changes in response to CO2 levels
-relatively fast 10-30 seconds to compensate
respiratory acidosis - ANS -too much acid
-pH is low, RR and depth up to exhale acid
-H+ inactivated and exhaled
Respiratory Alkalosis - ANS Too little acid
-pH is high, RR and depth down
-CO2 retained and carbonic acid increases
Respiratory acidosis; respiratory response - ANS causes Hypoventilation
correction hyperventilation
Respiratory acidosis; renal response - ANS Compensation- increased secretion of H+
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