CSF calcium

Calcium is one of the most abundant elements in the body, mainly distributed in bones (99%). Calcium in the cerebrospinal fluid is mainly distributed in the extracellular fluid (0.2%). The intracellular fluid is almost free of calcium, and is present in the form of blood combined with calcium and free calcium, each of which accounts for half. The combination of calcium and protein or other acid radicals; the presence of free calcium Ca++ is a part of the blood that directly exerts physiological effects. Combines calcium with free calcium to maintain a dynamic balance. Serum calcium refers to the concentration of calcium ions in the serum. Calcium in serum reduces neuromuscular excitability; maintains excitability and rhythm of the myocardium and its conduction system; participates in muscle contraction; participates in the coagulation process; and constitutes important physiological functions such as bones and teeth. Basic Information Specialist classification: examination classification: cerebrospinal fluid examination Applicable gender: whether men and women apply fasting: fasting Analysis results: Below normal: Found in hypocalcemia, renal rickets, hypoparathyroidism, uremia and so on. Normal value: Cerebrospinal fluid calcium: 1.0-1.7mmol/L Above normal: Found in tuberculous meningitis, purulent meningitis, acute brain injury, encephalitis, brain tumors and so on. negative: Positive: Tips: Stop using vitamin D, calcium gluconate, dihydrochlorpromazine, androgen, estrogen, progesterone, diethylstilbestrol, testosterone, etc., because these can make calcium determination high; stop using phenytoin, phenobarbital Drugs such as diuretics, diuretics, and sodium sulfate can make the results lower. Normal value 1.0 to 1.7 mmol/L (4.0 to 7.0 mg/dl). Clinical significance Abnormal result (1) elevated in tuberculous meningitis, purulent meningitis, acute brain injury, encephalitis, brain tumors, etc. (2) Reduced in low blood calcium, renal rickets, hypoparathyroidism, uremia and so on. People who need to be tested Neck stiffness, severe headache, loss of appetite, unconsciousness, vomiting, convulsions, burnout, sleepiness, sensitivity to light, small blood spots on the skin, skin rash and other symptoms. Low results may be diseases: brain trauma, suppurative meningitis results may be high disease: hypoparathyroidism, tuberculous meningitis, uremia considerations Before testing: Stop using vitamin D, calcium gluconate, dihydrochlorpromazine, androgen, estrogen, progesterone, diethylstilbestrol, testosterone, etc., because these can make calcium determination high; stop using phenytoin, phenobarbital, diuretic Drugs, sodium sulfate and other drugs, these can make the measurement results are low. When testing: Relax your body and follow the doctor's instructions. Inspection process The cerebrospinal fluid is extracted and the amount of calcium is detected by a chemical method. Not suitable for the crowd 1. If there is obvious papilledema or cerebral palsy, contraindications are contraindicated. 2. Patients who are in shock, exhaustion or endangered state and local skin inflammation, and lesions in the posterior cranial fossa are contraindicated. Adverse reactions and risks If the patient has symptoms such as breathing, pulse, or abnormal color during puncture, stop the operation immediately and deal with it accordingly.