Document Detail


Increased risk of hip fracture in the elderly associated with prochlorperazine: is a prescribing cascade contributing?
MedLine Citation:
PMID:  20623516     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
PURPOSE: To examine the prescribing of prochlorperazine secondary to the prescribing of a medicine which could lead to symptoms for which prochlorperazine is indicated and commonly used. Given the range of potential hypotensive, sedative, dystonic and other extra-pyramidal side effects associated with prochlorperazine, its association with hip fracture was also examined.
METHODS: Prescription/event sequence symmetry analyses were undertaken from 1st January 2003 to 31st December 2006, using administrative claims data from the Department of Veterans' Affairs, Australia. This method assesses asymmetry in the distribution of an incident event (either prescription of another medicine or hospitalization) before and after the initiation of prochlorperazine. Crude and adjusted sequence ratios (ASR) with 95% confidence intervals (CI) were calculated.
RESULTS: A total of 34 235 persons with incident use of prochlorperazine were identified during the study period. Statistically significant positive associations were found for a number of commonly used medicines, including cardiovascular medicines, NSAIDs, opioids and sedatives and the subsequent initiation of prochlorperazine that ranged from 1.07 (95%CI 1.01-1.14) for diuretics to 1.50 (95%CI 1.40-1.61) for statins. Prescription event analysis showed a 49% (95%CI 1.19-1.86) increased risk of hospitalisation for hip fracture following dispensing of prochlorperazine.
CONCLUSIONS: Prescribers should consider the possible contributing role of newly initiated medicines with the potential to cause of dizziness, and where possible address this through dose reduction or cessation of the medicine, rather than prescribing prochlorperazine.
Authors:
Gillian E Caughey; Elizabeth E Roughead; Nicole Pratt; Sepehr Shakib; Agnes I Vitry; Andrew L Gilbert
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Pharmacoepidemiology and drug safety     Volume:  19     ISSN:  1099-1557     ISO Abbreviation:  Pharmacoepidemiol Drug Saf     Publication Date:  2010 Sep 
Date Detail:
Created Date:  2010-09-02     Completed Date:  2010-12-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9208369     Medline TA:  Pharmacoepidemiol Drug Saf     Country:  England    
Other Details:
Languages:  eng     Pagination:  977-82     Citation Subset:  IM    
Copyright Information:
(c) 2010 John Wiley & Sons, Ltd.
Affiliation:
Quality Use of Medicines and Pharmacy Research Centre, Sansom Institute, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, SA, Australia. gillian.caughey@unisa.edu.au
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MeSH Terms
Descriptor/Qualifier:
Aged
Aged, 80 and over
Antiemetics / adverse effects*,  therapeutic use
Australia / epidemiology
Databases, Factual
Dizziness / chemically induced,  diagnosis,  drug therapy
Female
Hip Fractures / chemically induced*
Hospitalization / statistics & numerical data
Humans
Male
Nausea / chemically induced,  diagnosis,  drug therapy
Pharmaceutical Preparations / administration & dosage,  adverse effects
Physician's Practice Patterns / statistics & numerical data*
Prochlorperazine / adverse effects*,  therapeutic use
Risk
Veterans
Chemical
Reg. No./Substance:
0/Antiemetics; 0/Pharmaceutical Preparations; 58-38-8/Prochlorperazine

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


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