Sodium (Na)
RDA
5 gram/day
Source
Salt
Cereal
Legumes
Meat
Eggs
Milk
Function
Maintenece of plasma Volume
Acid Balance
By
Sodium bicarbonate act like buffer in human body
Sodium Hydrogen exchander in renal
Na-K Pump
Absorpsion of
Glucose
Galactose
Amino Acid
Absorption in
Renal
Small intestine
Nerve muscle conduction
Distribution
Total Body Contain
4000 mEq
75%
Exchangeable
Extracelular
Intracelular
Amount
Amount
25%
Non-Exchangeable
Bones
Tissue
4-10 mEq/L
135-145 mEq/L
Regulation
Decrease in Blood Preassure
Terdeteksi oleh juxtaglomerular apparatus di nefron
Releasing
Renin
Causes conversion of
Angiotensinogen
To
Angiotensin 1
Angitensin Converting Enzyme (ACE)
Angiotensin II
Adrenal Cortex
Releasing
Aldosteron
Causes
Increase Na Reabsorption
Higher Blood Pressure
Streching of Atrium
Release of
Atrial Natriuretic Factor (ANF)
Decrease in Aldosteron
Decrease in ADH
Sodium Excretion
Lack of Sodium
< 135-145 mEq/L
Hyponatremia
Osmolarity
Normal
Decrease
Increase
Causes
Hyperglycemia
Uremia
Mannitol Therapy
Causes
Hypervolemic
Isolated NaCl
Hypovolemic
keadaan saat
Kadar air tinggi
keadaan saat
keadaan saat
Kadar air rendah
Kadar air normal
Causes
Hyperlipidemia
Hyperproteinemia
Faktor penting
Osmolarity
Volume
Too much Sodium
Volume
Hypervolemic
Normal
Hypovolemic