McGraw was born in Vinita, Oklahoma, the son of Anne Geraldine Jerry (nee NÃ©e) stevens And Joseph. J McGraw, Mcgraw. Jr he grew up with two older, Sisters deana And, donna and younger Sister brenda in the oilfields Of North texas where his father was an equipment. supplier
Definition. Hypocalcemia, a low bood calcium level, occurs when the concentration of free calcium ions in the blood falls below 4.0 mg/dL (dL = one tenth of a liter). The normal concentration of free calcium ions in the blood serum is 4.0-6.0 mg/dL.
Causes of hypocalcemia include hypoparathyroidism, pseudohypoparathyroidism, vitamin D deficiency, and renal failure. Mild hypocalcemia may be asymptomatic or cause muscle cramps. Severe hypocalcemia (serum calcium 7 mg/dL [1.75 mmol/L]) may cause hyperreflexia, tetany (paresthesias of the lips, tongue, fingers, and feet, carpopedal and/or facial spasms, muscle aches), or generalized seizures.