Sodium: Difference between revisions
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<section begin="clinical biochemistry" />'''Sodium''' is an abundant electrolyte in the body, and sodium ion (Na+) is the dominant ion in the extracellular space. Abnormally low or high sodium ([[hyponatraemia]] and [[hypernatraemia]], respectively), are common but potentially lethal disorders in the worst case. | <section begin="clinical biochemistry" />'''Sodium''' is an abundant electrolyte in the body, and sodium ion (Na+) is the dominant ion in the extracellular space. Abnormally low or high sodium ([[hyponatraemia]] and [[hypernatraemia]], respectively), are common but potentially lethal disorders in the worst case.<section end="clinical biochemistry" /> | ||
<section begin="clinical biochemistry" /> | |||
== Sodium homeostasis == | == Sodium homeostasis == | ||
The level of sodium in the body is regulated by the [[renin-angiotensin-aldosterone system]] (RAAS) and by [[anti-diuretic hormone]] (ADH). <section end="clinical biochemistry" /> | The level of sodium in the body is regulated by the [[renin-angiotensin-aldosterone system]] (RAAS) and by [[anti-diuretic hormone]] (ADH). <section end="clinical biochemistry" /> | ||
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== Sodium in the diet == | == Sodium in the diet == | ||
Too much sodium in the diet increases the risk of cardiovascular disease. Most people today eat much more sodium than is recommended. | Too much sodium in the diet increases the risk of cardiovascular disease. Most people today eat much more sodium than is recommended. | ||
<section begin="clinical biochemistry" /> | |||
== Sodium in laboratory medicine == | |||
When measuring sodium levels in a blood test, flame photometry or ion-selective electrodes (potentiometry) is used. | |||
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[[Category:Physiology]] | [[Category:Physiology]] | ||