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Implementing Best Practices in Cervical Cancer Screening
Ann Evensen, MDUW Health VeronaNovember 6, 2008
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The Opportunity A variety of pap smear techniques were being
followed at UW Verona This caused concern:
Some techniques did not reflect best practices Potential for missing cervical disease Lack of standardization increased work of
nurses and wasted supplies
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Our Team
Team leaders: Ann Evensen, MDand Adrian Tabares, Med 2
Team Members: John Beasley, MDKathleen Carr, MDJanice Cooney, PA-CMarguerite Elliott, DOWilliam Scheibel, MDMark Shapleigh, Clinic ManagerSusan Skochelak, MDSandy Skrede, LPNDoug Smith, MDHeidi Stokes, PA-C
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Our Goal
90% of pap smears at UW Verona clinic for low-risk women will be done using a single method that reflects “best practices” as described in current literature.
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Current Situation We examined three variables in pap smear
screening:1) collection instrument2) glass slide versus liquid-based
cytology (LBC)3) frequency
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Current Situation, Part 1:
The Ayre’s spatula and Cytobrush used together is the most sensitive method of collecting a pap smear.
Martin-Hirsch PPL, Jarvis GG, Kitchener HC, Lilford R. Collection devices for obtaining cervical cytology samples. Cochrane Database of Systematic Reviews 2000, Issue 3.
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Current Situation, Part 1:
Clinicians used 62% Cervex broom 31% Ayre’s spatula
plus Cytobrush 6% Cervex broom plus
Cytobrush
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Current Situation, Part 2:
Liquid-based cervical cytology is neither more sensitive nor more specific for detection of high grade cervical intraepithelial neoplasia compared with the conventional Pap test.
Arbyn M, Bergeron C, Klinkhamer P, Martin-Hirsch P,Siebers AG, Bulten J. Liquid compared with conventionalcervical cytology: a systematic review and meta-analysis.Obstet Gynecol 2008;111:167–77.
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Current Situation, Part 2:
37% 63%
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Current Situation, Part 3:
National guidelines recommend screening low risk women every 1-3 years based on age and type of pap
Example: low risk women over 30 should be screened every three years with liquid based cytology
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Current Situation, Part 3:
0%
5%
10%
15%
20%
25%
30%
35%
40%
0-1 Year 1-2 Years 2-3 Years Other
Screening frequency
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Root Cause Analysis
We examined patient, clinician, and systems factors that may be contributing to the variety of cervical cancer screening practices at our clinic.
Examples: physician habit patient preference lack of knowledge of best practices
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Intervention
Faculty agreed on single method for screening low-risk women based on data from our clinic and literature review of best practices.
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Liquid versus glass slide debate Liquid $75, glass $25 Fewer exams = fewer lab, physician labor,
and supply costs Fewer repeat exams due to need for HPV
sample or “insufficient cells” Screening required less often with liquid
method
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Implementation
Protocol implemented at UW Verona Clinic:
• Clinicians were trained to use plastic Ayre’s spatula plus Cytobrush with liquid-based cytology done every 2-3 years based on age.
• Exam rooms restocked.
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Assessment
Six months after protocol implementation, feedback was gathered via:
• Written survey of clinicians • Team meetings and individual staff
interviews Pap smear audit was repeated
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Results
Adherence to screening protocol
0
20
40
60
80
100
Nov 07 May 08
Perc
ent c
ompl
ianc
e
Liquid basedcytologyAyre's plusCytobrushEvery 2-3 years
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Screening frequency issues Data collection Systems-based solution
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Future Plans
Plan QI project to develop a systems-based approach to improve screening frequency. Balance costs with need for resident education.
Orient every new class of resident physicians to pap protocol to sustain improvements that we have realized.
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Conclusions Simplifying exam room set-up for pap smears is possible
and can improve adherence to best practices for cervical cancer screening.
Despite some clinicians having to abandon personal preferences for screening, support for the protocol was wide-spread.
This project was successful because we changed the system rather than each clinician. However, we were not able to systematically change physician/patient expectations of annual screening.