| sodium group | The alkali metals: cesium, lithium, potassium, rubidium, and sodium. (05 Mar 2000) |
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| sodium hexafluorosilicate | Na2SiF6;used (in dilute solutions) as an antiseptic and deodorant, and for fluoridation of drinking water. Synonym: sodium fluosilicate, sodium silicofluoride. (05 Mar 2000) |
| sodium-hydrogen antiporter | A plasma membrane exchange glycoprotein transporter that functions in intracellular pH regulation, cell volume regulation, and cellular response to many different hormones and mitogens. (12 Dec 1998) |
| sodium hydrogen carbonate | <chemical> Carbonic acid monosodium salt (CHNaO3). A white, crystalline powder that is used as an electrolyte replenisher and systemic alkaliser. It is applied topically in solution to wash the nose, mouth, or vagina, and as a cleansing enema. Pharmacologic action: Acid neutralization. Uses: Preexisting metabolic acidosis, hyperkalemia, tricyclic or phenobarbital overdose. Dose in mEq: 0.3 * (base deficit) * (wt in kg). Potential complications: Metabolic alkalosis, hypercarbia, hyperosmolar state. Note: Since HCO3- does not cross cell membranes and CO2 does, the administration of bicarbonate may actually make tissues more acidotic. Chemical name: Carbonic acid monosodium salt. (12 Mar 2000) |
| sodium hydrogen sulfite | NaHSO3;acid sodium sulfite, used in gastric and intestinal fermentation, externally in the treatment of parasitic diseases, and as an antioxidant in certain injections (s. Metabisulfite). Synonym: sodium hydrogen sulfite, sodium pyrosulfite. (05 Mar 2000) |
| sodium hydroxide | <chemical> A highly caustic substance that is used to neutralise acids and make sodium salts. Pharmacological action: caustics, pharmaceutic aid. Chemical name: Sodium hydroxide (Na(OH)) (12 Dec 1998) |
| sodium hypochlorite | <chemical> The sodium salt of hypochlorous acid. It is used as an oxidizing and bleaching agent and as a disinfectant. Pharmacological action: disinfectants, oxidants. Chemical name: Hypochlorous acid, sodium salt (12 Dec 1998) |
| sodium hypophosphite | NaPH2O2-H2O;formerly used as a nerve tonic. (05 Mar 2000) |
| sodium hyposulfite | Na2S2O3-5H2O;an antidote in cyanide poisoning in conjunction with sodium nitrite; used as a prophylactic agent against ringworm infections in swimming pools and baths, and to measure the extracellular fluid volume of the body. Synonym: sodium hyposulfite. (05 Mar 2000) |
| sodium ichthyolsulfonate | An alterative and antiseptic. (05 Mar 2000) |
| sodium indigotin disulfonate | <chemical> 3,3'-dioxo-(delta-2,2'-biindoline)-5,5'-disulfonic acid disodium salt. An indolesulfonic acid that is used as a dye in renal function testing and as a reagent for the detection of nitrates and chlorates and in the testing of milk. Pharmacological action: dyes, indicators and reagents, renal agents. Chemical name: 1H-Indole-5-sulfonic acid, 2-(1,3-dihydro-3-oxo-5-sulfo-2H-indol-2-ylidene)-2,3-dihydro-3-oxo-, disodium salt (12 Dec 1998) |
| sodium iodide | <chemical> Sodium iodide (nai). A compound forming white, odourless deliquescent crystals and used as iodine supplement, expectorant or in its radioactive (I-131) form as an diagnostic aid, particularly for thyroid function determinants. Chemical name: Sodium iodide (NaI) (12 Dec 1998) |
| sodium iodide iodine-131 | Prepared from radioactive iodine (131I); practically carrier-free, with a half-life of 8.0 days; used as a diagnostic agent in suspected thyroid disease and in the treatment of selected thyroid diseases. (05 Mar 2000) |
| sodium isotopes | Stable sodium atoms that have the same atomic number as the element sodium, but differ in atomic weight. Na-23 is a stable sodium isotope. (12 Dec 1998) |
| sodium lactate | The sodium salt of racaemic or inactive lactic acid. It is used intravenously in a one-sixth molar solution as a fluid and electrolyte replenisher to combat acidosis. (12 Dec 1998) |