Fluid and Electrolyte Lecture 1 Flashcards
Tachycardia
This occurs in what fluid and electrolyte imbalance?
A: Dehydration
Study Tip: Tachycardia occurs because there is low blood volume and it is not enough to fill the large blood vessel. (Aka hypotension) The blood must flow faster to do the same amount of perfusion as a large amount of blood volume. Causes heart to beat more rapidly.
Ex. Occurs during a hemorrhage of blood.
S3 develops
This occurs in what fluid and electrolyte imbalance?
A: Hypervolemia
Study Tip: This occurs as an adaptation to increased blood volume because the heart cannot fully empty the ventricles with only two heart beats. There are situations where even an S4 is needed.
Dry skin
Dry mucous membranes
Poor skin turgor
This occurs in what fluid and electrolyte imbalance?
A: Dehydration
Amount of Intake in 24 hours
Fluids?
Solids?
Oxidation?
A:
Fluids: 1,500 ml
Solids: 800 ml
Cellular Oxidation: 300 ml
Elevated hematocrit
What does this lab mean in relation to fluid and electrolyte balance?
A: Dehydration
Study Tip: This occurs because there is a decreased amount of water with an increased amount of red blood cells.
As a nurse you must make sure that __________ is not caused by a nursing action.
Hypervolemia
Systemic Edema is caused by ________.
Right Sided Heart Failure
Fluid Distribution between the Compartments accounts Extracellular Fluid (ECF) is ____ of body water.
A: 1/3
Decreased urine output
This occurs in what fluid and electrolyte imbalance?
A: Dehydration
Study Tip: Urine Output is decreased because the kidneys are retaining water and salt to maintain the current fluid volume.
__________occurs because the valves can’t handle the volume of blood that they are being forced to pump.
Heart Failure
Fluid Distribution between the Compartments accounts Interstitial fluid _____ of extracellular fluid
A: 80%
Excessive diaphoresis
What fluid and electrolyte imbalance does this cause?
A: Dehydration
Study Tip: sweating results in fluid loss
What is a common disease that can cause sodium retention?
Hyperaldosteronism
Study Tip: This can turn into Hypervolemia because aldosterone is secreted to retain sodium and water.
What controls intravascular hydrostatic pressure and tonicity?
Sodium, Albumin, Glucose
Severe = IV fluid replacement
What fluid imbalance is this treatment used to treat?
A: Treatment: Dehydration
What labs should the nurse monitor for when the patient is having vomiting and diarrhea?
Serum Potassium
Low Concentration of Solutes in the vasculature causes fluid to go inside the blood cell due to oncotic pressure pulls fluid inside which causes the cell to swell because inside the cell is where there is a higher concentration of Solutes.
What solution has this effect on Blood Cells?
A: Hypotonic
Why are Kussmaul Respirations slow and shallow?
To increase HCO3 in the serum to buffer the acidosis.
Study Tip: Kussmaul Resporations are ALWAYS seen in Metabolic Acidosis!!!
Mental status changes
This occurs in what fluid and electrolyte imbalance?
A: Dehydration
Study Tip: This occurs because hypertonic blood pulls blood from the cells and interstitial and pulls them into the intravascular. This blood is pulled from the brain cells. The brain cells begin to shrink which causes your patient to have clinical manifestations as restlessness and anxiety.
What 5 Body Systems Regulate Fluid Balance?
A: GI Hypothalamus Pituitary Renal Cardiac
This is the body’s simplest mechanism for maintaining fluid balance and occurs even with small losses of fluid?
A: Thirst
If replacing fluids give _______ solution first because _______ solution will pull out of cells into intravascular. Blood pressure will not be _________ by isotonic solution.
Isotonic
Hypertonic
increased
GI: diarrhea, prolonged emesis, NG drainage
What fluid and electrolyte imbalance does this cause?
A: Dehydration
Study Tip:
diarrhea results in fluid loss of both sodium and potassium
Vomiting results in fluid loss of both sodium and potassium
Ng drainage has an output what results in fluid loss
What is another word for Antidiuretic Hormone (ADH)?
A: Vasopressin
________ regulates fluid balance through a series of steps.
A: Anti-Diuretic Hormone
Study Tip: The hypothalamus sense low blood volume and increased serum osmolality and signals the pituitary gland to secrete ADH which is released and this causes the kidneys to retain water and sodium by preventing the body from urinating thus increasing fluid volume.
The ___________ senses low blood volume and increased serum osmolality
__________ signaled.
The pituitary gland secretes __________ into blood stream
This causes _________ to retain water
__________ increases.
__________ decreases.
Balance is maintained.
A: Hypothalamus Pituitary gland AntiDiuretic Hormone kidneys Blood volume Serum osmolality
During a fever water is ________ in the body to keep the body cool.
retained
Giving a patient a ________ solution pulls blood into intravascular which can kill cells if done too rapidly which will remove the water from the cell.
hypertonic
This compensatory mechanism is less effective in the elderly.
A: Thirst
Angiotensin II Causes _________
A. Vasoconstriction and stimulates the release of aldosterone to retain fluids and increase blood pressure.
Study Tip: Constriction of the blood vessels increases intravascular pressure, which increases blood pressure, and stimulates the release of aldosterone with makes the kidneys retain sodium and water.
When Blood flow to glomerulus _______
Juxtaglomerular cells secrete Renin into the _________. Renin travels to _______ and converts Angiotensinogen to Angiotensin 1. Angiotensin I travels to the ______ and converts to angiotensin II via angiotensin converting enzyme or ACE.
Angiotensin II works by constricting the blood vessels which increases vascular resistance. Angiotensin II travels to the ________ to stimulate aldosterone. Aldosterone Increases resorption of _________ within the nephrons
_______ of water leads to increased fluid volume which increases blood pressure. When blood pressure normalizes this feedback cycle ends.
A: Decreases blood stream liver lungs adrenal glands sodium and water Retention
Increased fluid volume causes _________.
A. Increased blood pressure
Brain Natriuretic Peptide (BNP)
Is also called?
A: B-type natriuretic peptide
Diabetes Insipidus
What fluid and electrolyte imbalance does this cause?
A: Dehydration
Study Tip: excretes mass amounts of unconcentrated urine forcing the body to retain sodium.
What is secreted by ventricles of the heart in response to stretching?
A: Brain Natriuretic Peptide (BNP)
________ is a cardiac hormone.
A: Brain Natriuretic Peptide (BNP)
What is the Brain Natriuretic Peptide (BNP) Normal lab range?
A:
Avoid administering hypertonic solutions
What fluid imbalance is this treatment used to treat?
A: Treatment: Dehydration
This is a cardiac hormone involved in fluid volume balance. Stored in atrial cells, it is released when pressure increases.
This counteracts the effects of renin-angiotensin-aldosterone system by reducing intravascular blood volume and dropping blood pressure.
A: Atrial Natriuretic Peptide (ANP)
Rationale: FYI
What is a common lab used to assess heart failure?
A: Brain Natriuretic Peptide (BNP)
Rationale: Also elevated in people with left ventricular failure
Without treatment BP decreases and cardiac output decreases
This occurs in what fluid and electrolyte imbalance?
A: Hypervolemia
This occurs when fluid loss exceeds fluid gained?
A: Dehydration
What is the effect of the loss of body fluids on blood tonicity?
A: increase blood solute concentration (Increased tonicity)
Fistulas
What fluid and electrolyte imbalance does this cause?
A: Dehydration
Study Tip: fistula have a large amount of drainage since it is a joke between the bowel and bladder and the outside world.
Suppresses serum renin levels
Decreases aldosterone release by the adrenals
Increases glomerular filtration rate increasing excretion of sodium and water
Decreases ADH release
Causes vasodilation thereby reducing vascular resistance
A: Atrial Natriuretic Peptide (ANP)
Rationale: FYI
What is the effect of the loss of body fluids on a cellular level?
A:
Fluid shifts from inside cells to inside blood
Cells shrink
Cellular function impaired