ACID BASE BALANCE Flashcards
what are the major chemicals you have to remember with Acid-base balance?
- Bicarb (base)
- Co2 (Acid)
- Hydrogen (Acid)
What are the major lung and kidney chemicals?
Lung = C02 (Carbonic Acid)
Kidney = Hydrogen & Bicarb
These chemicals can either make you sick or compensate. It depends in which imbalance you have.
What does the pH tell you about the blood?
If it is…..Acidic, alkaline or neutral
What is the normal range for pH?
7.35-7.45
What does it mean if the pH is below 7.35?
Acidosis=coma/death
What does it mean if the pH is above 7.45?
Alkalosis=Nervous system excites = convulsions/death
The body is continuously adjusting C02, BiCarb, & Hydrogen to keep the pH between 7.35-7.45.
How does the body stay within normal range by utilizing compensating organs such as, kidneys & Lungs?
KIDNEYS
-Removes acid thru urine
-Holds on Bicarb returns to blood OR Excrete thru the
urine.
-Kidneys take hrs. or days to do their job (slow).
LUNGS
- Rids C02 thru exhale
- Hypoventilation = Retain C02
- Lungs respond FAST
Describe the Pathophysiology of Respiratory Acidosis
Acute or Chronic Lung Problem caused by too much C02 = Hypo-ventilating. Therefore retains C02 (acid) therefore kidneys will compensate with Bicarb and Hydrogen.
In acidosis the body is trying to compensate b/c of less acid so… the body must excrete the acid, which means get rid of hydrogen. Therefore the body will retain bicarb b/c its a Base and pH will be low.
Causes of Respiratory Acidosis
Retaining C02
Mid abdominal incision, narcotics, sleeping pills,
pneumothorax, collapsed lung, pneumonia.
* All have poor gas exchange therefore retaining C02 =
Hypoventilation=Acidosis=Coma
Narcotics & Sedatives suppress respirations causing C02 retention.
If C02 is high then O2 low so hypoxia sets in.
S/S Respiratory Acidosis
- Headache, confused, sleepy
- If not corrected=COMA
- Hypoxia-give O2, early signs are restlessness & tachycardia
NOTE: With Restlessness THINK HYPOXIA 1st
As acid concentration C02 increases LOC decreases
Treatment: Respiratory Acidosis
Fix breathing problem first. Tx. Pneumonia - Rid secretions postural drainage - Percussion (vibe therapy) losens - Deep breathing exercises - Suctioning remove secretions - Fluids liquify secretions - Elevate HOB - expand lungs better. - Incentive Spirometry - expand lungs - Tx. Pneumothorax - Pt. will have chest tube. - Encourage post op pt. turn, cough, deep breath. - Prevent pneumonia = prevent respiratory acidosis
Describe the Pathophysiology of Respiratory Alkalosis
Lungs are sick, so kidneys compensate
Kidneys excrete Bicarb, & Retain Hydrogen
Losing C02 (acid)
Hyperventiling
pH is high - anything over 7.45 = alkalosis
Causes of Respiratory Alkalosis
Hyperventilation
Hysterical Acute Aspirin Overdose
Situation Hysterical Client
*Pt breathing to fast therefore removing C02 (acid)
S/S Respiratory Alkalosis
Light headed or faint feeling
Peri-Oral numbness
Numbness & tingling in fingers & toes
Tx. Respiratory Alkalosis
Do not wait for kidneys to kick in. Breathe into a paper bag May have to sedate Pt. Tx. the cause Monitor ABG's