Interpretasi Analisis Gas Darah
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Transcript of Interpretasi Analisis Gas Darah
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Interpretasi Analisis Gas Darah
pH normal 7,35-7,45
< 7,35 asidemia, asidosis (Kadar H+
meningkat)
> 7,45 alkalemia, alkalosis (Kadar H+
menurun)
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Nilai normal gas darahArteri Campuran
VenaVena
pH 7,4 7,36 7,36Range pH 7,35 – 7,45 7,31 – 7,41 7,31 – 7,41pO2 mmHg 80-100 35-40 30-50pCO2 mmHg 35-45 41-51 40-52
Sat O2 > 95% 60-80% 60-85%
HCO3- 22-26 22-26 22-28
Base Excess -2 - +2 -2 - +2 -2 - +2
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ALKALOSIS RESPIRATORIK AKUT
Penurunan 2 mmol/L HCO3
menurunkan 10 mmHg pCO2 dibawah 40 mmHg
HCO3 yang diharapkan = 24-2 [(40-kadar pCO2 sekarang)/10]
ALKALOSIS RESPIRATORIK KRONIS
Penurunan 5 mmol/L HCO3 menurunkan 10 mmHg pCO2
dibawah 40 mmHg
HCO3 yang diharapkan = 24-5 [(40-kadar pCO2 sekarang)/10]
+ 2
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ASIDOSIS RESPIRATORIK AKUT
Peningkatan 1 mmol/L HCO3
meningkatkan 10 mmHg pCO2 diatas 40 mmHg
HCO3 yang diharapkan = 24 + [(kadar pCO2 - 40)/10]
ASIDOSIS RESPIRATORIK KRONIS
Peningkatan 4 mmol/L HCO3 meningkatkan 10 mmHg pCO2
diatas 40 mmHg
HCO3 yang diharapkan = 24 + 4 [(kadar pCO2 sekarang -
40)/10]
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ANION GAP
• Anion gap = Na+ - [Cl- + HCO3-]
• Normal 8-16 mEq/L• Rata-rata12 mEq/L• Penurunan kadar albumin 1 gram menurunkan anion gap 2,5 – 3 mmol
OSMOLAL GAP
• 2x [kadar Na+ plasma] + [glukosa/18] + [BUN/2,8]• Nilai normal 10-15
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ASIDOSIS METABOLIK
• pCO2 yang diharapkan = 1,5 x [HCO3-] + 8 + 2
ALKALOSIS METABOLIK
• pCO2 yang diharapkan = 0,7 x [HCO3-] + 20 + 2
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CEK ANION GAP
• Anion gap 20-30 67% asidosis metabolik• Anion gap > 30 pasti asidosis metabolik
RATIO DELTA
• Anion gap terukur – 12 / 24-HCO3 terukur• < 0,4 hiperkloremik asidosis anion gap• 0,4-0,8 gabungan anion gap tinggi dan asidosis anion gap normal• 1 ketoasidosis diabetikum• 1-2 asidosis metabolik anion gap tinggi• > 2 disertai alkalosis metabolik atau adapula asidosis respiratorik kronis