Hypervolemia Flashcards
What is fluid volume excess?
Too much fluid in the vascular space
What is the vascular space?
Veins
Capilaries
Artery
CV system
What are some causes to hypervolemia?
HF
Renal failure
Lots of sodium
When you have HF, what happens? (4)
- Heart is weak
- CO decreases
- Kidney perfusion decreases
- UO decreases
HF where is fluid?
In vascular space
What happens with renal failure?
Kidneys aren’t functioning
What are examples of things with lots of Na?
- Effervescent soluble meds
- Canned/processed foods
- IV fluids with sodium
What does Na do?
Makes you retain H20 and stays in vascular space
What is aldosterone?
Steroid…mineralocoticoid
Where is aldosterone found?
Adrenal glands (on top of kidneys)
What is the NORMAL action of aldosterone?
When blood volume gets low (hemorrhage, vomiting, etc) aldosterone secretion with increase, which helps retain Na and H20 (in vas. space). When Na and H20 increases in vascular space, it increases blood volume
What are diseases with too much aldosterone (retaining too much Na and H20)?
Cushings Hyperaldosteronism (Conns)
What is a disease with too little aldosterone?
Addison
Where is ANP found?
Atrium of heart
How does atrium work?
Opposite of aldosterone
Since ANP is the opposite of aldosterone, what does ANP do?
Excretion of Na and H20
ANP is a mechanism to ____
Decrease fluid volume
ANP or aldosterone?
Found in atrium of heart
ANP
ANP or aldosterone?
Retains Na and H20
Aldosterone
ANP or aldosterone?
Found on top of kidneys
Aldosterone
ANP or aldosterone?
Decreases blood volume
ANP
ANP or aldosterone?
Increases blood volume
Aldosterone
ANP or aldosterone?
Found in adrenal glands
Aldosterone
ANP or aldosterone?
Excretion of Na and H20
ANP
What does anti-diuretic hormone (ADH) do?
Makes you retain H20 ONLY
Too much or too little ADH
Fluid volume deficit
Too little ADH (DI)
Too much or too little ADH
Retain water
Too much ADH (SIADH)
Too much or too little ADH
Blood is diluted
Too much ADH (SIADH)
Too much or too little ADH
Urine is diluted
Too little ADH (DI)
Too much or too little ADH
Blood is concentrated
Too little ADH (DI)
Too much or too little ADH
Fluid volume excess
Too much ADH (SIADH)
Too much or too little ADH
Diureses
Too little ADH (DI)
Too much or too little ADH
Urine is concentrated
Too much ADH (SIADH)
Too much or too little ADH
Loose water
Too little ADH (DI)
Too much or too little ADH
SIADH
Too much ADH (SIADH)
Too much or too little ADH
DI
Too little ADH
Where is ADH found?
Pituitary
What makes you think and ADH problem?
Head traumas!!!
craniotomy, head injury, sinus surgery, transsphenoidal hypophysectomy, increased ICP conditions
What is another name for ADH?
Vasopressin or DDAVP
What disease would need ADH: SIADH or DI?
DI (too little ADH)
ADH= vasopressin. What does ADH do?
Causes you to retain H20
Fluid volume overload SS (9)?
- Distended neck veins/peripheral veins (vessels=full)
- Peripheral edema/3rd spacing
- CVP increases
- Wet lung sounds/crackles
- Polyuria
- HR Increases
- BP increases
- Weight increases
Why is there peripheral edema/3rd spacing with fluid volume overload?
Vessels can’t hold anymore, so start to leak
Fluid volume overload
Where is CVP measured and why would it increase?
Measured in right atrium
Move volume, more pressure
Fluid volume overload
What is normal CVP?
2-6
Fluid volume overload
Why would there be polyuria?
Kidneys trying to diurese
Fluid volume overload
What problems can these lead to due to the fluid not being able to be pushed forward efficiently?
Can lead to HF and pulmonary edema
Fluid volume overload
Why does BP increase?
More volume, more pressure
Acute weight gain: fat or fluid?
FLUID
Fluid volume overload
Fluid retention, think what problems first?
Heart problems
Treatment?
Low Na/restrict fluids
I&O and daily weights
Diuretics
What are the diuretics given?
Loop: Furosemide (40mg) or Bumetanide (1mg)
Hydrochlorathiazide
Potassium sparing: Spirolanactone
Treatment
Bedrest induces diuresis by the release of ____ which does what?
Bedrest induces diuresis by the release of ANP (loose Na and H20) and decreases production of ADH (so you don’t retain H20 and Na since normal ADH causes you to retain)
Who to give IV fluids slowly to? Why are we even giving fluids during hypervolomia?
To elderly and very young
Pt. on bedrest= increased risk for complications like constopation, pneumonia, DVT