Key result
Automated strain gauge plethysmography demonstrated 90% sensitivity and 97% negative predictive value for proximal DVT, but its 10% false negative rate limits its use as a definitive test.
Why the study?
Does automated strain gauge plethysmography accurately diagnose deep vein thrombosis in patients presenting with suspected DVT compared to contrast venography?
Cross-Sectional (n=307)
Does automated strain gauge plethysmography accurately diagnose deep vein thrombosis in patients presenting with suspected DVT compared to contrast venography?
Automated strain gauge plethysmography is a quick initial screening test for DVT but lacks sufficient accuracy to serve as a definitive standalone diagnostic tool.
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False-negative risk precludes standalone use for proximal DVT; leaves open prospective validation in combined diagnostic algorithms.
Maskell et al. (2002) conducted a cross-sectional in Suspected deep vein thrombosis (n=307). Automated strain gauge plethysmography (venometer) vs. Contrast venography was evaluated on Diagnostic accuracy for proximal deep vein thrombosis. Automated strain gauge plethysmography demonstrated 90% sensitivity and 97% negative predictive value for proximal DVT, but its 10% false negative rate limits its use as a definitive test.
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