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- W2069181778 abstract "Venous bleeding during transsphenoidal surgery for resection of pituitary tumors is a common problem that interferes with the performance of the surgical procedure. In this study, data were collected prospectively from 50 patients to determine whether there were pre- or intraoperative factors (e.g., patient demographics, type and grade of pituitary tumor, intraoperative hemodynamics) associated with venous bleeding which might be used to predict its occurrence. In addition, central venous pressure (CVP), and cavernous sinus pressure (CSP) were measured in 13 patients to evaluate the relationship of these pressures to each other and to the severity of venous bleeding. During resection of the pituitary tumor, the severity of venous bleeding was graded as minimal, moderate, or severe, the latter two grades requiring therapeutic intervention. Moderate bleeding requiring intervention occurred in 15 of the 50 patients, and resolved in all cases. Moderate bleeding was not related to CSP or CVP, and no specific associated factor was observed. CSP was not correlated with CVP, and was higher than that predicted from the CVP and the position of the patient or the hydrostatic gravitational pressure gradient. These results suggest that it is not possible to predict in advance which patients will have problems with venous bleeding, but that simple therapeutic maneuvers are effective." @default.
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- W2069181778 date "1997-03-01" @default.
- W2069181778 modified "2023-09-23" @default.
- W2069181778 title "Venous Bleeding During Transsphenoidal Surgery" @default.
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- W2069181778 doi "https://doi.org/10.1097/00000539-199703000-00014" @default.
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