There is insufficient data to provide evidence based indications for the routine use of jugular bulb oximetry.
Measurement of oxygen saturation in th jugular bulb by the retrograde placement of a fibreoptic catheter provides an indirect assessment of cerebral perfusion by measurement of oxygen saturation in the blood exiting the brain. Normal SJO2 is about 60%.
1. Low saturation < 55% may be indicative of cerebral hypoperfusion due to systmemic hypotension or hypocapnia.
2. High saturation > 85% may be indicative of cerebral hyperaemia or inadequate neuronal metabolism, such as occurs during the hyperaemic phase or during the evolution of brain death.
Its use is limited to experience units when an index of CBF is required during adjunctive therapies in patients with intracranial hypertension e.g. CPP augmentation with catecholamines, barbiturate coma, hyperventilation or hypothermia.
Measurement of oxygen saturation in th jugular bulb by the retrograde placement of a fibreoptic catheter provides an indirect assessment of cerebral perfusion by measurement of oxygen saturation in the blood exiting the brain. Normal SJO2 is about 60%.
1. Low saturation < 55% may be indicative of cerebral hypoperfusion due to systmemic hypotension or hypocapnia.
2. High saturation > 85% may be indicative of cerebral hyperaemia or inadequate neuronal metabolism, such as occurs during the hyperaemic phase or during the evolution of brain death.
Its use is limited to experience units when an index of CBF is required during adjunctive therapies in patients with intracranial hypertension e.g. CPP augmentation with catecholamines, barbiturate coma, hyperventilation or hypothermia.
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