Document Detail

Position-Related Variability of CSF Opening Pressure Measurements.
MedLine Citation:
PMID:  23064593     Owner:  NLM     Status:  Publisher    
BACKGROUND AND PURPOSE:Normative data for CSF OP have previously been established with patients in the LD position. During fluoroscopically guided LP procedures, radiologists frequently obtain these OP measurements with patients prone. In this prospective study, our goal was to determine the variability of OP measurements as a function of patient positioning and to assess whether there is a relationship with patient BMI.MATERIALS AND METHODS:Consecutive patients reporting for fluoroscopically guided LP or myelography were enrolled. OP was measured with the patient in 3 positions, with the order of the technique randomized: prone with table flat, prone with table tilted until the hub of the needle was at the level of the right atrium, and LD with the needle hub at the level of the spinal canal. The BMI of each patient was calculated. The Wilcoxon signed-rank test and linear regression analysis with bivariate fit of difference were used for analysis.RESULTS:OP measurements with the patient in the prone position were significantly elevated compared with those in the LD position, with mean differences of 2.7 (P < .001) and 1.6 cm H(2)O, (P = .017) for prone flat and prone tilted, respectively. There was no significant difference in OP measurements for the prone flat versus prone tilted positions (P = .20). There was no correlation between BMI and observed differences (LD-flat: R(2) = 0.00028; LD-tilt: R(2) = 0.00038; prone-tilt: R(2) = 0.00000020).CONCLUSIONS:Measuring OP with the patient in the prone position may result in overestimation of CSF pressure. Table tilt did not significantly impact mean prone OP. Radiologists should specify exact patient positioning when reporting OP measurements.
K M Schwartz; P H Luetmer; C H Hunt; A L Kotsenas; F E Diehn; L J Eckel; D F Black; V T Lehman; E P Lindell
Related Documents :
24411533 - Endotracheal intubation in patients with unstable cervical spine using lma-fastrach and...
23143753 - Effects of high-efficiency postdilution online hemodiafiltration and high-flux hemodial...
1521363 - Familial hyperaldosteronism type ii: five families with a new variety of primary aldost...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-11
Journal Detail:
Title:  AJNR. American journal of neuroradiology     Volume:  -     ISSN:  1936-959X     ISO Abbreviation:  AJNR Am J Neuroradiol     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8003708     Medline TA:  AJNR Am J Neuroradiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Radiology, Division of Neuroradiology, Mayo Clinic, Rochester, Minnesota.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Classification of Mild Cognitive Impairment and Alzheimer Disease Using Model-Based MR and Magnetiza...
Next Document:  Pipeline Embolization Device in Aneurysmal Subarachnoid Hemorrhage.