Document Detail


A single sub-anaesthetic dose of propofol to reduce patient recall of peribulbar block.
MedLine Citation:
PMID:  11143688     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We audited a total of 1233 patients scheduled for elective cataract extraction or trabeculectomy using peri-bulbar anaesthesia. A bolus of propofol provided sedation to cover insertion of the block. During an initial two-year period we collected data on the amount of propofol used to sedate 481 patients. Multiple linear regression analysis was then used to obtain an equation to link the dose used to age and weight in those who were adequately sedated. The dose of propofol in milligrams was calculated as 56 + 0.25 x weight (kg) - 0.53 x age (yrs). We subsequently assessed the effectiveness of this formula at abolishing recall of the injections whilst not compromising the airway on a further 752 patients. This simple regime was effective at abolishing recall of the block in 78.6% of the patients studied and avoids the cost and logistic implications of more complicated drug delivery systems. Use of the formula does not significantly alter the incidence of recall compared to sedation provided by an experienced ophthalmic anaesthetist. We hope it will provide a guide for more junior anaesthetists to obtain the satisfactory sedation level that comes with experience.
Authors:
G Hocking; H G Balmer
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Publication Detail:
Type:  Clinical Trial; Journal Article    
Journal Detail:
Title:  Journal of the Royal Army Medical Corps     Volume:  146     ISSN:  0035-8665     ISO Abbreviation:  J R Army Med Corps     Publication Date:  2000 Oct 
Date Detail:
Created Date:  2000-12-19     Completed Date:  2001-02-15     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7505627     Medline TA:  J R Army Med Corps     Country:  England    
Other Details:
Languages:  eng     Pagination:  196-8     Citation Subset:  IM    
Affiliation:
Department of Anaesthesia, MDHU Frimley Park Hospital, Frimley, Camberley, Surrey, GU16 5UJ. drghocking@hotmail.com
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MeSH Terms
Descriptor/Qualifier:
Age Factors
Aged
Anesthetics, Intravenous / administration & dosage*,  pharmacology
Anesthetics, Local
Body Weight
Bupivacaine
Cataract Extraction / adverse effects*
Female
Humans
Hypnotics and Sedatives / administration & dosage*,  pharmacology
Injections, Intravenous
Lidocaine
Linear Models
Male
Medical Audit
Mental Recall / drug effects*
Nerve Block / methods*
Propofol / pharmacology,  therapeutic use*
Prospective Studies
Sex Characteristics
Trabeculectomy / adverse effects*
Chemical
Reg. No./Substance:
0/Anesthetics, Intravenous; 0/Anesthetics, Local; 0/Hypnotics and Sedatives; 137-58-6/Lidocaine; 2078-54-8/Propofol; 2180-92-9/Bupivacaine

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


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