Prematurely detected traumatic carotid-cavernous sinus fistula, by means of unintentional contralateral inferior petrosal sinus catheterization: bilateral jugular bulb oxygen saturation findings.

Abstract	A traumatic carotid-cavernous sinus fistula (CCSF) was prematurely suspected following the detection of arterial-like hemoglobin oxygen saturation values, sampled from a catheter placed for cerebrovenous monitoring. A high-resolution scan of jugular foramina revealed that the catheter tip had been unintentionally placed in the inferior petrosal sinus, contralateral to the CCSF, instead of in the superior jugular bulb. Jugular bulb hemoglobin oxygen saturation (SjO2), ipsilateral to CCSF, later approached arterial hemoglobin oxygen saturation (SaO2) values.The possibility and consequences of unintentional catheterization of the inferior petrosal sinus, and of extracerebral contamination of blood in the jugular bulb due to blood in the inferior petrosal sinus, are discussed. We also discuss the reliability of SjO2 monitoring in the present CCSF case.
Authors	A Chieregato, V Veronesi, F Calzolari, M Marchi, L Targa
Journal	Journal of neurosurgical anesthesiology (J Neurosurg Anesthesiol) Vol. 10 Issue 1 Pg. 16-21 (Jan 1998) ISSN: 0898-4921 [Print] United States
PMID	9438613 (Publication Type: Case Reports, Journal Article)
Chemical References	Hemoglobins
Topics	Carotid Sinus (diagnostic imaging) Cavernous Sinus (diagnostic imaging) Female Fistula (diagnosis, diagnostic imaging) Hemoglobins (metabolism) Humans Jugular Veins Middle Aged Oximetry Petrosal Sinus Sampling Tomography, X-Ray Computed

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