non visualised scan audit
TRANSCRIPT
![Page 1: Non visualised scan audit](https://reader031.vdocument.in/reader031/viewer/2022020410/58edadac1a28abd0418b4581/html5/thumbnails/1.jpg)
aaa.screening.nhs.uk National programme website – aaa.screening.nhs.uk
Abdominal Aortic Aneurysm
Five Rivers AAA Screening ProgrammeReview of Non-Visualised Scans
Caroline Wells (Programme Manager)March 2016
![Page 2: Non visualised scan audit](https://reader031.vdocument.in/reader031/viewer/2022020410/58edadac1a28abd0418b4581/html5/thumbnails/2.jpg)
aaa.screening.nhs.uk
Overview• National guidance• Local and national performance• Review of 2014/15 and 2015/16 data
– By machine– By user– Reasons for non-visualisation
• Conclusions
![Page 3: Non visualised scan audit](https://reader031.vdocument.in/reader031/viewer/2022020410/58edadac1a28abd0418b4581/html5/thumbnails/3.jpg)
aaa.screening.nhs.uk
National guidance• NAAASP requires both TS
and LS aortic measurements for the screening test to be classed as successful
• If any part of the infrarenal aorta cannot be visualised it should be recorded as a non-visualised scan
NAAASP (2014) Non-visualised aortas: Guidance for local AAA screening programmes in the management of non-visualised screening results
![Page 4: Non visualised scan audit](https://reader031.vdocument.in/reader031/viewer/2022020410/58edadac1a28abd0418b4581/html5/thumbnails/4.jpg)
aaa.screening.nhs.uk
National guidance
Reasons for non-visualisation include:•High body mass index•Excessive bowel gas •Ambiguity regarding calliper placement and aortic diameter measurement•Unusual anatomy or pathology
![Page 5: Non visualised scan audit](https://reader031.vdocument.in/reader031/viewer/2022020410/58edadac1a28abd0418b4581/html5/thumbnails/5.jpg)
aaa.screening.nhs.uk
National guidance
NAAASP (2015) Pathway Standards for NHS Abdominal Aortic Aneurysm Screening Programme
Standard 9 •Percentage of screening encounters where aorta could not be visualised
Rationale•A high non-visualised rate may be due to a training issue, equipment maintenance issues or it may be a reflection of the population being screened
![Page 6: Non visualised scan audit](https://reader031.vdocument.in/reader031/viewer/2022020410/58edadac1a28abd0418b4581/html5/thumbnails/6.jpg)
aaa.screening.nhs.uk
Performance
Five Rivers AAA Screening Programme•Increase in the number of non-visualised scans over the last year:
– 0.53% in 2014/15 (21 scans)– 1.16% up to the end of Q3 2015/16 (28 scans)
•Nationally:– 1.41% of scans were non-visualised in 2014/15– 1.39% up to the end of Q3 2015/16
•Thresholds: Acceptable ≤ 3% Achievable ≤ 1%
![Page 7: Non visualised scan audit](https://reader031.vdocument.in/reader031/viewer/2022020410/58edadac1a28abd0418b4581/html5/thumbnails/7.jpg)
aaa.screening.nhs.uk
Number of non-visualised scans by machine(as a percentage of total scans completed per machine)
Sonosite machines in use since April 2012Green and blue systems were replaced in April 2014
![Page 8: Non visualised scan audit](https://reader031.vdocument.in/reader031/viewer/2022020410/58edadac1a28abd0418b4581/html5/thumbnails/8.jpg)
aaa.screening.nhs.uk
Number of non-visualised scans by user(as a percentage of total scans completed per Screening Technician)
![Page 11: Non visualised scan audit](https://reader031.vdocument.in/reader031/viewer/2022020410/58edadac1a28abd0418b4581/html5/thumbnails/11.jpg)
aaa.screening.nhs.uk
Conclusions• No obvious pattern with equipment or user
• It may be possible to minimise the number of non-visualised scans due to bowel gas – Use of techniques such as breathing exercises and
movement to help move the gas– Further analysis of possible causes of bowel gas e.g.
medication