Digital Photoplethysmography in the Diagnosis of Suspected Lower Limb DVT: Is It Useful?
| Autor: | Y.K Tan, A.F. da Silva |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Adult
Male medicine.medical_specialty Light-reflection rheography (LRR) Deep-vein thrombosis (DVT) Venography Sensitivity and Specificity Lower limb Venous refilling time Photoplethysmogram medicine Humans Screening tool Prospective Studies General hospital Photoplethysmography Prospective cohort study Aged Ultrasonography Aged 80 and over Venous Thrombosis Medicine(all) medicine.diagnostic_test business.industry Phlebography Middle Aged medicine.disease Thrombosis Deep vein thrombosis (DVT) Digital photoplethysmography (D-PPG) Colour-flow duplex imaging (CFDI) Female Surgery Radiology Cardiology and Cardiovascular Medicine business |
| Zdroj: | European Journal of Vascular and Endovascular Surgery. 18(1):71-79 |
| ISSN: | 1078-5884 |
| DOI: | 10.1053/ejvs.1999.0886 |
| Popis: | Objective: to determine the role of digital photoplethysmography (D-PPG) in the diagnosis of deep-vein thrombosis (DVT), in comparison to the "gold standard" of either contrast ascending venography (ACV) or colour-flow duplex imaging (CFDI). Method: prospective study of 100 hospital inpatients (103 legs) referred to the X-ray department for ACV or CFDI with clinically suspected lower limb DVT in a district general hospital. Each patient was assessed by either ACV or CFDI, and D-PPG. Results: thirty-seven limbs were found to have DVT as demonstrated by ACV or CFDI. All patients with a venous refilling time (RT) of greater than 20 s and venous pump (VP) of greater than 35 had a normal ACV or CFDI. Using RT of less than 21 s as the optimal cut-off point, D-PPG achieved a sensitivity of 100%, negative-predictive value of 100%, specificity of 47% and positive-predictive value of 51%. By using VP of less than 36 as the optimal cut-off point, a sensitivity of 100%, a negative-predictive value of 100%, a specificity of 35% and positive-predictive value of 46% were achieved. Conclusions: these results validate the use of portable D-PPG as a useful screening tool for the diagnosis of clinically suspected lower limb DVT. A positive test requires further confirmation by one of the "gold standard" methods, whereas a negative test effectively excludes DVT. |
| Databáze: | OpenAIRE |
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