PubMed Health⌕ Search

Biomedical subjects

A W Feinberg

Publications and source records attributed to A W Feinberg.

At least 19 recordsLinked to original sources
PubMed1988

Contrast venography: reassessment of its role.

To compare contrast venography with noninvasive methods, 353 patients clinically suspected of having deep venous thrombosis were examined with venography and independently with combined Doppler flow sounds and plethysmography. Noninvasive examinations had a sensitivity of 96% and a specificity of 90%. Positive noninvasive tests had a 94% predictive value, and negative noninvasive tests had a 93% predictive value. The overall accuracy of the noninvasive tests was 94% (331 of 353) compared with venography. Since venography itself may be subject to misinterpretation, noninvasive examinations should be the preferred initial method for diagnosing deep venous thrombosis. Venography should be reserved for situations that require additional diagnostic confirmation.

Blood Flow Velocity↗
PubMed1988

Use of diastolic velocity ratios to predict significant carotid artery stenosis.

Duplex scanning of the carotid bifurcation has emerged as an accurate noninvasive means of predicting and quantifying carotid arterial stenoses. Compared with the more widely reported measurements of spectral broadening and peak frequency ratios, measurements of diastolic velocity ratios have theoretical advantages in predicting carotid artery stenosis. The use of diastolic velocity ratios between the internal and common carotid arteries was prospectively studied in 30 consecutive patients to determine its accuracy in predicting significant stenosis of the internal carotid artery when compared with angiography. A total of 55 carotid bifurcations were studied, and the use of diastolic velocity ratios correctly predicted high-grade stenosis (greater than or equal to 75% diameter reduction) in 52 cases (95%). We conclude that diastolic velocity ratios may be used to accurately detect significant internal carotid artery stenosis.

Adult↗