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A prospective randomized study of cerebrospinal fluid drainage to prevent paraplegia after high-risk surgery on the thoracoabdominal aorta  E.Stanley.

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Presentation on theme: "A prospective randomized study of cerebrospinal fluid drainage to prevent paraplegia after high-risk surgery on the thoracoabdominal aorta  E.Stanley."— Presentation transcript:

1 A prospective randomized study of cerebrospinal fluid drainage to prevent paraplegia after high-risk surgery on the thoracoabdominal aorta  E.Stanley Crawford, MD, Lars G. Svensson, MB, PhD, Kenneth R. Hess, MS, Salwa S. Shenaq, MD, Joseph S. Coselli, MD, Hazim J. Safi, MD, Prita K. Mohindra, MD, Victor Rivera, MD  Journal of Vascular Surgery  Volume 13, Issue 1, Pages (January 1991) DOI: / (91)90010-R Copyright © 1991 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

2 Fig. 1 Drawings illustrate the classification of thoracoabdominal aortic aneurysms used in this study. Journal of Vascular Surgery  , 36-46DOI: ( / (91)90010-R) Copyright © 1991 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

3 Fig. 2 Nomogram for calculating minimal sample size for a statistically valid study with a dichotomous endpoint (alpha = 0.05, beta = 0.2, power = 80%, based on Pearson chi-square test). Journal of Vascular Surgery  , 36-46DOI: ( / (91)90010-R) Copyright © 1991 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

4 Fig. 3 Histogram of total CSF volume drained in 47 patients.
Journal of Vascular Surgery  , 36-46DOI: ( / (91)90010-R) Copyright © 1991 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

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