Nephrology Book

Abnormally Decreased

Abnormally Increased

  • Hypermagnesemia

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HypermagnesemiaAka: High Serum Magnesium

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  1. Definition
    1. Serum Magnesium over 2.5 meq/L
  2. Symptoms
    1. Muscle Weakness
    2. Headache
    3. Excessive thirst
  3. Signs
    1. Hyporeflexia
    2. Hypotension
    3. Respiratory Depression
    4. Pulmonary edema
  4. Causes
    1. Renal Failure (Acute or Chronic)
    2. Medication overuse
      1. Antacids
      2. Laxative abuse
      3. Milk of Magnesia
      4. Maalox
    3. Adrenal Insufficiency (Addison's Disease)
    4. Hypothyroidism (Myxedema)
    5. Massive Magnesium dosing or intake
      1. Preeclampsia or Eclampsia management
    6. Tissue breakdown
  5. Labs
    1. See Serum Magnesium
    2. Serum Magnesium Interpretation
      1. Normal in pregnancy: 1.3 to 2.6 mg/dl
      2. Therapeutic: 5.5-7.5 mg/dl
      3. Loss of patellar reflex: 10-12 mg/dl
      4. Respiratory depression: 15-17 mg/dl
      5. Paralysis: 15-17 mg/dl
      6. Cardiac Arrest: 30-35 mg/dl
  6. Management
    1. Stop all Magnesium Sources
    2. Supportive Care with ABC Management
    3. Dialysis
    4. Cardiotoxicity Management
      1. Calcium Gluconate 10% 1-10 ml IV

hypermagnesemia (C0151714)

ConceptsDisease or Syndrome (T047)
ICD9275.2
Englishhigh blood magnesium level, HYPERMAGNESAEMIA, hypermagnesemia
Spanishhipermagnesemia
Parent ConceptsDisorder of fluid AND/OR electrolyte (C0267994), Metabolic Diseases (C0025517), Magnesium disorder (C1621348), Water-Electrolyte Imbalance (C0043065)
SourcesAOD, COSTAR, CST, MTH, MTHICD9, NDFRT, SCTSPA, SNOMEDCT
Derived from the NIH UMLS (Unified Medical Language System)



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