Electrolytes Flashcards
hyponatremia
sodium level less than 135mEq/L
hypokalemia
serum potassium level is less than 3.5mEq/L
hypocalcemia
serum calcium level less than 8.5 mg/dL
hypernatremia
sodium level greater than 145mEq/L
hyperkalemia
serum potassium level is greater than 145mEq/L
hypercalcemia
serum calcium level is greater than 11mg/dL
hypomagnesemia
serum magnesium level is less than
hypermagnesemia
serum magenisum level is greater than 2.1mEq/L
hypophosphatemia
serum phosphorus level is less than 2.0mg/dL
hyperphosphatemia
serum phosphorus level is greater than 4.5mg/dL
hyperchloremia
serum chloride level is greater than 110mEq/L
hypochloremia
serum chloride level is less than 94mEq/L
normal serum sodium level
135 to 145 mEq/L
normal serum potassium level
3.5 to 5 mEq/L
normal serum chloride level
96 to 106 mEq/L
normal serum phosphorus level
2.5 to 4.5 mg/dL
normal serum calcium level
8.4 to 10.2mg/dL
normal serum magnesium level
1.3 to 2.1 mEq/L
sodium functions
- regulates osmolality
- helps maintain blood pressure
- helps maintain acid-base balance
- promotes transmission of nerve impulses to muscle and tissues with the help of other electrolytes
potassium functions
- maintains fluid balance in the cells
- contracts skeletal, cardiac, and smooth muscles
- helps breakdown carbohydrates and fats
- promotes cellular growth
- helps maintain acid-base balance
calcium function
- development of teeth & bones
- maintain muscle tone
- helps regulated BP by aiding in cardiac contractility
- co-factor in the clotting cascade
- aids in contraction of skeletal and cardiac muscles
magnesium functions
- coenzyme for metabolism of carbohydrates and proteins
- maintain bone strength and health
- aids in smooth muscle contraction and relaxation
phosphorus functions
- acid-base buffer
- transport fatty acids
- provides engery (ATP) for muscle contractions
ATP=adensoine triphosphate
chloride functions
- maintains acid-base balance
- stimulates stomach acid for digestion
sodium abbreviation
na+
potassium abbreviation
K+
calcium abbreviation
Ca+
phophorus abbreviation
PO4
chloride abbreviation
Cl-
magnesium abbreviation
Mg+
Causes for hypomagnesemia
- chronic alcoholism
- malabsorption or malnutrition
- use of diretics
- DKA
- hyperparathyroidism
- hyperaldosteronism
causes for hypermagnesemia
- renal failure
- excessive intake of magnesium containing antiacids
- adrenal deficiency
causes for hyperphosphatemia
- renal failure
- chemotherapy
- hypoparathyroidism
- increase consumption of foods high in phosphorus
- excessive use of phosphorus containing laxatives or enemas
causes for hypophophatemia
- intestinal malabsorption
- hyperparathyroidism (increase in renal excretion)
- respiratory alkalosis
- excessive intake of phosphate-binding antacids
- vitamin D deficiency
- long-term alcohol abuse
causes for hyperchloremia
- excessive intake of sodium chloride (orally or intravenous)
- hypernatremia
causes for hypochloremia
- excessive persperiation
- in alkalosis during early phases of vomiting with a lost of hydrochloric acid from the stomach
causes for hypercalcemia
- hyperparathyroidism
- overdose of vitamin D
- bone metastases from cancer
causes for hypocalcemia
- hypoparathyroidism
- decrease intestinal absorption
- decrease in vitamin D
- administration of blood products
- acute pancreatitis
causes for hyperkalemia
- renal failure
- excessive potassium intake from food or salt substitutes
- hydroaldosteronism
- cellular damage from traumas (crush injuries or burns)
- medications- potassium sparing diruetics, ACE inhibitors, and NSAIDS
- acidosis-metabolic or respiratory
ACE Inhibitiors- angiotensin-converting enzyme or NSAIDS-nonsteroidal antiinflammatory drugs
causes for hypokalemia
- GI Losses (diarrhea, gastric suctioning, ostomy fluids, or vomiting
- diabetic ketoacidosis
- metabolic acidosis
- pernicious anemia
causes for hypernatremia
- medications and meals (too much salt intake)
- osmotic diuretic agents
- diabetes insipidus
- excessive water loss
- low water intake (leads to dehydration)
causes for hyponatremia
- fluid overload (IV or oral)
- hyperglycemia, SIADH, heart failure
- aggressive diuretic therapy
- GI losses (diarrhea, fistulas, vomiting)
- excessive sweating (sodium loss)
cations
positively charged ions (sodium, potassium, calcium, magnesium)
anions
negatively charged ions (chloride, phosphate, bicarbonate)