Comparison of colour duplex ultrasound and ankle-brachial pressure index measurements in peripheral vascular disease in type 2 diabetic patients with foot infections.
Article
in English
| IMSEAR
| ID: sea-92444
ABSTRACT
BACKGROUND AND OBJECTIVES:
Peripheral vascular disease (PVD) is a common cause of morbidity and mortality and is reported to be more common among diabetic subjects compared to non-diabetic subjects. The aim of the study was to compare the specificity and sensitivity of ankle-brachial index (ABI) measured by peripheral doppler with the colour duplex ultrasound (CDU) for diagnosis of PVD.METHODS:
One hundred type 2 diabetic patients admitted to our diabetic centre with foot lesions underwent both colour duplex ultrasound and ankle-brachial index measurements. PVD was diagnosed if the individual had haemodynamically significant obstruction on CDU, or if the ABI was < 0.9. The sensitivity and specificity of ABI was determined using the CDU as 'gold standard'.RESULTS:
The mean age of the study group was 59.5 +/- 10.1 years and the mean duration of diabetes was 11.7 +/- 8.1 years. Of the total 100 subjects, six subjects had calcification of peripheral vessels and they were not included while calculating for sensitivity and specificity of ABI. Twenty (21.3%) subjects diagnosed as PVD by the CDU were not classified as PVD by the ABI measurements. Conversely, only three subjects (3.2%) classified as PVD by ABI had normal arteries based on CDU scanning. Overall, ABI had low sensitivity (70.6%) but a high specificity (88.5%). The overall agreement between CDU and ABI was poor (k = 0.20).CONCLUSION:
ABI is a good initial screening tool but some patients with significant stenosis in lower extremities would be missed, if ABI measurement alone is used for diagnosis of PVD.
Full text:
Available
Index:
IMSEAR (South-East Asia)
Main subject:
Pressure
/
Aged
/
Female
/
Humans
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Male
/
Prospective Studies
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Cohort Studies
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Sensitivity and Specificity
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Peripheral Vascular Diseases
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Diabetic Foot
Type of study:
Diagnostic study
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Etiology study
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Incidence study
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Observational study
/
Risk factors
Language:
English
Year:
2002
Type:
Article
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