Important Lab Values For Shock Flashcards
pH abnormal values
Less than 7.35 or greater than 7.45
pH implications
Early shock pH is elevated, reflecting respiratory alkalosis. Late shock pH is decreased, reflecting metabolic acidosis
PaCO2 normal values
35-45 mmHg
PaCO2 implications
Early shock PaCO2 is decreased because of hyperventilation
PaO2 normal values
80-100
PaO2 implications
Decreased PaO2 indicates the development of complications such as ARDS
Abnormal HCO3
Less than 22 mEq/L
HCO3 implications
Decreased in late shock because of metabolic acidosis
Abnormal base deficit
Less than –2 mEq/L
Base deficit implications
Sustained negative levels reflect the severity of shock.
Abnormal Mixed venous oxygen saturation (SvO2)
Less than 60%
Mixed venous oxygen saturation (SvO2) implications
Decreased SvO2 indicates increased oxygen extraction at the tissue level, indicating decreased oxygen delivery.
Abnormal lactate
Greater than 2 mg/dL
Lactate implications
Increased values indicate the presence of anaerobic metabolism.
Abnormal hemoglobin
Less than 11.7 g/dL
Hemoglobin implications
Decreased levels indicate blood loss and decreased oxygen-carrying capacity
Abnormal hematocrit
Less than 38%
Hematocrit implications
Decreased values indicate blood loss.
Abnormal glucose
Less than 70 mg/dL or greater than 105 mg/dL
Glucose implications
In the absence of diabetes, increased values indicate the initiation of fight-or-flight compensatory mechanisms.
Abnormal BUN
Greater than 21 mg/dL
BUN Implications
Increased values indicate renal hypoperfusion
Abnormal creatinine
Greater than 1.2 mg/dL
Creatinine implications
Increased values indicate acute renal failure.
Abnormal Aspartate aminotransferase
Greater than 20 units/L
Aspartate aminotransferase implications
Increased values indicate hepatic injury.
Abnormal Lactic dehydrogenase
Greater than 102 units/L
Lactic dehydrogenase implications
Increased values indicate hepatic injury.
