Gas Goblin: Case #41

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The Two Heartbeats Visit

A 31-year-old woman at 32 weeks gestation presents with mild dyspnoea and is being evaluated for PE but is otherwise stable.

ABG
pH: 7.47 (7.35 – 7.45)
pO₂: 105 mmHg (75 – 100)
pCO₂: 28 mmHg (35 – 45)
HCO₃⁻: 19 mmol/L (22 – 26)
BE: -2 mmol/L (-3 – 3)
SaO₂: 99 % (94 – 100)
Na⁺: 136 mmol/L (135 – 145)
K⁺: 3.7 mmol/L (3.5 – 5.5)
Cl: 104 mmol/L (95 – 110)
Ca: 1.1 mmol/L (1.12 – 1.3)
Lactate: 1 mmol/L
Glucose: 4.6 mmol/L (4 – 8)
Urea: 2.5 mmol/L
Creatinine: 45 μmol/L
Osmolarity: 275 mOsm/L
COHb: 1 % (0.2 – 2)
MetHb: 1 %
fiO2: 0.21

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Parameters

Sample Type ABG

pH

pO₂ (mmHg)

pCO₂ (mmHg)

HCO₃⁻ (mmol/L)

BE (mmol/L)

SaO₂ (%)

Na⁺ (mmol/L)

K⁺ (mmol/L)

Cl (mmol/L)

Ca (mmol/L)

Lactate (mmol/L)

Glucose (mmol/L)

Urea (mmol/L)

Creatinine (μmol/L)

Osmolarity (mOsm/L)

COHb (%)

MetHb (%)

fiO2

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