Card Set Information
AMS1T2 Magnesium Imbalances
Magnesium general info
Acts directly on myoneural junction
Coenzyme in protein & carbohydrate metabolism
Important for cardiac function
50-60% contained in bone
Factors regulating Ca2+ balance appear to influence Mg2+ balance
What is the most common pathology associated with hypermagnesemia?
Increased intake/ingestion of products containing Mg2+ coupled with renal insufficiency/failure because kidneys are the primary mode of magnesium elimination.
What are the SnSs of hypermagnesemia?
Muscle weakness, loss of deep tendon reflexes, seizure
w/peaked T waves
Hypotension (secondary to depressed contractility of vasculature)
Nursing intervensions for pt w/hyperMg
Avoid meds & foods w/Mg
Frequent Assessment neuro, respiratory, renal, cardiac
If normal renal fxn then diuretics or IV NS to induce Mg
loss via urine.
May need Ca
gluconate to minimize sx because it will have an exact opposite physiological effect on on muscle tissue.
May need dialysis if v renal fnxn.
What are some common pathologies of hypoMg
Chronic alcoholism due to the alcoholic's tendency toward insuffient food intake.
Fluid loss, ie diuretics
Prolonged parenteral nutrition w/o supplement
Osmotic diuresis from high glucose due to uncontroled DM.
SnSs of hypoMg
Tremors, muscle weakness, confusion, coma
Hyperirritability, facial twitching, seizure
Similar to hypocalcemia
Cardiac irritability – dysrhythmia w/increased susceptibility to dig toxicity
Nursing intervensions for hypoMg
Increase dietary intake of Mg
If severe – IV or IM Mg