Fluid & Electrolytes Flashcards
Normal urine output rate
1 ml/kg/hour
What is a normal hourly urine output?
40-80 ml/hour
What is urine output during illness?
~ 0.5 ml/kg/hour
Intercellular Fluid
Fluid located within cells
Extracellular Fluid
Fluid outside of cells
Intravascular fluid
Fluid within blood vessels and Lymphatic vessels
Interstitial or extracellular Fluid
Fluid found between cells
How is fluid balanced achieved?
Fluid and electrolytes flows between IVS, EXCS, ICS to maintain homeostasis
What are some things that can effect fluid and electrolyte balance?
Treatments or disorders can disrupt fluid/electrolyte balance
Electrolytes
Electrically charged ions that become so by being broken down/dissolved in a solution
What are two major electrolytes?
Na+ and K+
What is Na+ normal range?
125-135 mEq/L
List functions of Na+
- Control/regulate water balance
- Maintain acid:base balance
- Muscle contraction
- Transmit nerve impulses
List risk factors that can lead to HYPOnatremia
- Decreased Na+ intake
- Increased fluid intake (oral or HYPOtonic solutions)
- SIADH
- HF
- Diarrhea/vomiting
- NG sxn
- Diuretics
- Impaired kidney fnxn
List risk factors leading to HYPERnatremia
- Increased Na+ intake
- Dehydration
- Sweating
- Diabetes Insipudus(dehydration occurs due to increased urine output = high sodium volume)
What are some SxS that HYPOnatremia and HYPERnatremia share?
- Confusion
- Irritable
- Lethargic
- Restless
- Siezures
What are SxS of HYPOnatremia?
- Muscle cramps
- weakness
- USG < 1.010
- Shared sxs = Lethargy, confusion, restless, irritable, and seizures
What are SxS of HYPERnatremia?
- Dry muc. membrane
- Thirst
- Increased body temp
- USG> 1.015
- Shared SxS: Lethargy, restless, confused, irritable, seizures
List nursing interventions for HYPOnatremia
- Remove cause whenever possible
- Restrict Oral/IV fluids
- Hypertonic soln. ( 3% NS)
- Increase sodium intake in diet
- Implement seizure precautions
List nursing interventions for HYPERnatremia
- Eliminate cause if possible
- Decrease sodium intake
- Hypotonic solution (0.45 NS or D5W) to decrease sodium levels
- Diuretics to excrete sodium
List functions of Chloride
- Maintain osmotic pressure
2. Maintain acid base balance
What increases Cl- levels? What decreases Cl- levels?
Increased levels: with poor kidney function
Decreased levels: excessive vomit/diarrhea
What is the normal range for Chloride?
95-105 mEq/L
What is the normal range for K+?
3.5-5.0 mEq/L
What are functions of potassium?
- Maintain water balance
- Carbohydrate and protein metabolism
- Regulate acid:base balance
- Transmit nerve impulses to heart, skeletal muscle, intestinal muscle and lungs
What are risk factors that contribute to HYPOkalemia?
- Decreased K+ intake
- K+ wasting Diuretics
- NG sxn
- Diarrhea/Vomitting
- Laxatives
What are some risk factors of HYPERkalemia?
- Increases K+ intake
- K+ sparing diuretics
- ACE inhibitors
- Decreased kidney function
What SxS do HYPERkalemia and HYPOkalemia have in common?
- Arrhythmias
2. Muscle weakness
What are SxS of HYPOkalemia?
- Muscle cramping
- FLAT T wave on EKG
- Decrease in peristalsis
- Shared SxS: Arrhythmias and muscle weakness
What are SxS of HYPERkalemia?
- Tall/peaked T wave on EKG
- Paralysis
- Paresthesia of face, tongue, hands, and feet
- Shared SxS: Arrhythmias and muscle weakness
List nursing interventions for HYPOkalemia
- Remove cause if possible
- K+ supplements: oral or IV
- Increase K+ in diet
- Assess renal function (BUN,Cre, and GFR) before administering
- Assess SxS digoxin toxicity
- Teach proper laxative or diuretic use
- Monitor cardiac rhythm
List nurse interventions for HYPERkalemia
- Monitor cardiac rhythm
- Restrict K+ intake in diet
- Discontinue K+ supplements
- Administer Kayexalate(treat high levels of K+)
- Administer K+ wasting diuretics
What is the normal range for Calcium?
8.4-10.6 mEq/L