1pp HUN 4221 Electrolytes 2011

1pp HUN 4221 Electrolytes 2011 - Fluid & Electrolytes 2011...

Info iconThis preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon
Fluid & Electrolytes 2011
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
luid Fluid ater: 60% of total body weight • Water: ~60% of total body weight • Distribution: Plasma tracellular Extracellular 33% Interstitial fluid Intracellular 67% Lymph Transcellular fluids
Background image of page 2
luid Balance Fluid Balance • Fluid balance: fluid intake = fluid lost l id i t k 2 300 l • Fluid intake = ~2,300 mls luid lost: • Fluid lost: Urine 1,400 mls Sweat 100 mls Feces 200 mls Insensible sses 600 mls Ex: Respiratory Tract, skin, losses Total 2,300 mls
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Fluid Balance: enin ngiotensin ldosterone S stem Renin-Angiotensin-Aldosterone System Angiotensinogen Juxtaglomerular apparatus (kidney) gg Angiotensin I drenal Angiotensin II Adrenal Aldosterone odium Retention Hypothalamus Sodium Retention Antidiuretic hormone (ADH) Water retention
Background image of page 4
Fluid: Adequate Intake • Based on total water = drinking water, beverages, d food and food • Men (19-30): 3.7 L/d omen (19 0): 2 7 L/d • Women (19-30): 2.7 L/d •I n f a n t s : 07L/d • 0-6 mo: 0.7 L/d • 7-12 mo: 0.8 L/d • Immature kidneys: important to consume adequate fluid DRI (2004)
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Electrolytes • Anions and cations in fluid • Electrical neutrality always maintained • Principal electrolytes: – Sodium – Potassium – Chloride
Background image of page 6
odium: Dietary Sources Sodium: Dietary Sources • Major form: sodium chloride (salt) – 40% sodium, 60% chloride 75% of sodium consumed – Added during food processing: • Canned items, condiments • Pickled foods, snacks • Natural sources: – Milk, meat, eggs, vegetables –~ 10% of sodium consumed
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Sodium: Control • High blood sodium ldosterone Renin Aldosterone Renin Sodium excreted in urine ypothalamus: ADH (vasopressin) • Hypothalamus: ADH (vasopressin) –T h i r s t l id i t k Fluid intake Water reabsorption
Background image of page 8
odium: Normal Concentrations Sodium: Normal Concentrations ajor extracellular cation • Major extracellular cation – Extracellular concentration = 142 mEq/L 0% b d di • 50% body sodium – Intracellular concentration = 10 mEq/L 0% body sodium • 10% body sodium keleton S eeo • 40% body sodium
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
odium: Functions Sodium: Functions embrane transport (see next slide) Membrane transport (see next slide) • Nerve cells • Muscle cells • Water balance – Osmotic pressure t l ll K – Intracellular K + – Circulatory volume tracellular sodium concentration Intracellular sodium concentration • Extracellular sodium concentration
Background image of page 10
Image of page 11
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/09/2011 for the course HUN 4445 taught by Professor Sitren during the Spring '08 term at University of Florida.

Page1 / 37

1pp HUN 4221 Electrolytes 2011 - Fluid & Electrolytes 2011...

This preview shows document pages 1 - 11. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online