abg presentation 4.18.58 PM

abg presentation 4.18.58 PM - Arterial Blood Gas Analysis...

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Arterial Blood Gas Analysis Vanessa Klee MSIV
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What is an ABG? The Components pH / PaCO 2 / PaO 2 / HCO 3 / O 2 sat / BE Desired Ranges pH - 7.35 - 7.45 PaCO 2 - 35-45 mmHg PaO 2 - 80-100 mmHg HCO 3 - 21-27 O 2 sat - 95-100% Base Excess - +/-2 mEq/L
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Why Order an ABG? Aids in establishing a diagnosis Helps guide treatment plan Aids in ventilator management Improvement in acid/base management allows for optimal function of medications Acid/base status may alter electrolyte levels critical to patient status/care
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Logistics When to order an arterial line -- Need for continuous BP monitoring Need for multiple ABGs Where to place -- the options Radial Femoral Brachial Dorsalis Pedis Axillary
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Acid Base Balance The body produces acids daily 15,000 mmol CO 2 50-100 mEq Nonvolatile acids The lungs and kidneys attempt to maintain balance
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Acid Base Balance Assessment of status via bicarbonate-carbon dioxide buffer system • CO 2 + H 2 O <--> H 2 CO 3 <--> HCO 3 - + H + • ph = 6.10 + log ([HCO 3 ] / [0.03 x PCO 2 ])
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The Terms ACIDS Acidemia Acidosis Respiratory CO 2 Metabolic HCO 3 BASES Alkalemia Alkalosis Respiratory CO 2 Metabolic HCO 3
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This note was uploaded on 12/24/2011 for the course STEP 1 taught by Professor Dr.aslam during the Fall '11 term at Montgomery College.

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abg presentation 4.18.58 PM - Arterial Blood Gas Analysis...

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