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NURS6902 CALCIUM EXAM WITH QUESTIONS AND ANSWERS
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NURS6902 CALCIUM EXAM WITHQUESTIONS AND ANSWERS
What is calcium used for? - ANSWER Acts like a sedative on muscles; necessary
for nerve impulses, transmission, blood clotting, muscle contraction, and relaxation
Who needs extra calcium - ANSWER Lactating/pregnant women and children
Normal serum calcium - ANSWER 9.0-11.0
Normal ionized calcium - ANSWER 4.5-5.5
What is the most abundant electrolyte in the body - ANSWER Calcium
Who does calcium have an inverse relationship with - ANSWER Phosphorus
Hypocalcemia - ANSWER Serum calcium less than 9.0
Causes of Hypocalcemia: renal failure - ANSWER Decreased vitamin D and
increased phosphorus which drives calcium into cells
Causes of Hypocalcemia: Decreased vitamin D intake - ANSWER Vitamin D is
required to absorb calcium from the GI tract
Causes of Hypocalcemia: Pancreatitis - ANSWER Calcium combines with fatty
acids in the pancreas
Causes of Hypocalcemia: Hyperphosphatemia - ANSWER Increased PO4 drives
Ca into the tissue; inverse relationship
Causes of Hypocalcemia: Thyroidectomy - ANSWER Parathyroid may
accidentally be removed; decreased PTH
Causes of Hypocalcemia: Low albumin - ANSWER Leads to falsely lowered
calcium because albumin binds to approximately 50% of blood calcium; the
ionized calcium is still normal therefore there are no symptoms
Causes of Hypocalcemia: Alkalosis - ANSWER Albumin becomes more negatively
charged. This can lead to temporary Hypocalcemia
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