Document Detail

The Clinical Validity of the Spontaneous Retinal Venous Pulsation.
MedLine Citation:
PMID:  22801353     Owner:  NLM     Status:  Publisher    
BACKGROUND:: The validity of the clinical dictum "the presence of spontaneous retinal venous pulsation (SVP) excludes raised intracranial pressure" has not been previously tested. We set out to determine the specificity and positive predictive value (PPV) of the presence of SVP to indicate normal intracranial pressure (ICP) in a routine clinical setting. METHODS:: We prospectively recruited patients undergoing lumbar puncture (LP), and 2 clinicians were blinded to the indications for LP and cerebrospinal fluid opening pressure (OP). Interobserver reliability was assessed. RESULTS:: There were 106 patients in our cohort with a median age of 44 years (range, 18-79 years) and median body mass index of 27.5 kg/m (range, 18-48 kg/m). SVP was present in 94 of 106 patients (88.7%). Thirteen of 106 (12.3%) patients had high OP (≥30 cmH2O), and SVP was present in 11 of 13 patients (86%) with high OP. The sensitivity (95% confidence interval) of the presence of SVP to exclude raised ICP was 0.89 (0.88-0.92), specificity of 0.15 (0.05-0.37), PPV of 0.88 (0.87-0.9), and negative predictive value of 0.17 (0.05-0.4). Interobserver agreement was moderate for SVP (kappa = 0.42). CONCLUSIONS:: Although the sensitivity and PPV of the presence of SVP to exclude raised ICP is high, it is not absolute. SVP can be seen in some patients with high ICP. Relying on the presence of SVP to exclude raised ICP may give a false sense of reassurance.
Sui Hsien Wong; Richard Patrick White
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-13
Journal Detail:
Title:  Journal of neuro-ophthalmology : the official journal of the North American Neuro-Ophthalmology Society     Volume:  -     ISSN:  1536-5166     ISO Abbreviation:  -     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-7-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9431308     Medline TA:  J Neuroophthalmol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Neurology (SHW, RPW), The Walton Center NHS Foundation Trust, Liverpool, United Kingdom.
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