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Magnesium Electrolyte Concept Map

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wendy kibby

on 23 May 2011

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Transcript of Magnesium Electrolyte Concept Map

Second most abundant
ICF cation
coenzyme in metabolism of carbs & protein
Metabolism of cellular nucleic acids and proteins.
balences are related to calcium and potassium
Cardiac function Clients at risk: Hypomagnesemia Signs/Sumptoms:
hyperactive deep tendon reflexes
cardiac dysrhythmias Increased and Decreased lab values: factors that regulate calcium balance appear to influence magnesium balance
low serum magnesium levels= neuromuscular and CNS hyperirritability. prolonged fasting/starvation, chronic alcoholism and fluid loss, use of many diuretics
high serum=depressed neruomuscular and CNS function, increased magnesium intake accompanied by renal insufficiency or failure. Diagnosis:
serum magnesium
ECG Geriatric considerations:
High magnesium intake can impair
calcium absorption and can decrease
phosphorous absorption
dosing should be monitored closely
in relation to renal function Hypomagnesemia interventions: PO supplements, increase dietary
intake, parental IV or IM mg when severe,
monitor cardiac rhythm, monitor for signs of digitalis intoxication, assess LOC, ABC's, Seizure precautions,
encourage mobility, auscultate bowel sounds Hypo:
annorexic clients
clients fasting related to religious
prolonged parenteral nutrition
w/o mg supplementation
uncontrolled DM Hypermagnesemia:
chronic kidney disease
pregnant women who recieve magnesium sulfate for management of eclampsia
impaired renal function Magnesium
(50-60% contained in bone)
Normal Value
1.5-2.5 mEq/L Nursing assessment:
physical: activity and rest (generalized
weakness, ataxia, vertigo), circulation
(irregular pulses, BP), food/fluid
(anorexia, nausea/vomiting, diarrhea),
neuro- paresthesia (legs, feet), vertigo,
nystagmus, musculoskeletal tremors,
babinski signs, disorientation, decreased
LOC, slurred speech) Hypermagnesemia Signs/Symptoms:
lethargy or drowsiness
impaired reflexes
respiratory and cardiac arrest
deep tendon reflexes lost Hypermagnesemia Intervensions
emergency treatment
(IV CaCl or calcium gluconate),
fluids to promote urinary excretion,
monitor cardiac rate/rhythm,
monitor BP, assess LOC & neuro-
muscular status,
monitor respiratory rate/depth/rhythm,
encourage cough/deep breathing exercises,
encourage fluids, promote bedrest Anticipated Prescriptions:
Hypermagnesemia: IV admin
of calcium chlorideor calcium
gluconate, dialysis (client with
impaired renal function)
Hypomagnesemia:PO supplements
(parenteral IV or IM
magnesium sulfate for severe cases)
magnesium based
antacids (Mylanta, Maalox)
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