MEDICAL INTELLIGENCE Cerebral Monitoring: Jugular Venous Oximetry
نویسندگان
چکیده
The internal jugular vein exits the skull and continues its course, within the carotid sheath, beneath the sternocleidomastoid muscle in a posterolateral approximation to the carotid artery. The jugular bulb is the dilated portion of the jugular vein just below the base of the skull and is the preferred site for blood sampling (see Figure 1). Although blood in the jugular bulb is derived from both cerebral hemispheres (approximately 70% ipsilateral and 30% contralateral) (6–8), it is generally accepted that most patients have a dominant side of venous drainage, usually the right (9,10). The two lateral sinuses that drain to the jugular bulbs differ in size in 88% of patients (11), and mixing of cerebral venous blood within the sinuses is incomplete (1,12)
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