Key result
Combined UI and OPG-G improves sensitivity over Doppler alone, detecting ~85% of internal carotid occlusions.
Why the study?
The relative accuracy of pulsed Doppler ultrasonic imaging and oculoplethysmography techniques compared with contrast arteriography in carotid occlusive disease was unclear.
What is the relative accuracy of ultrasonic imaging and oculoplethysmography compared to contrast arteriography in diagnosing carotid occlusive disease?
Observational (n=66)
What is the relative accuracy of ultrasonic imaging and oculoplethysmography compared to contrast arteriography in diagnosing carotid occlusive disease?
Answers are grounded in this paper and cite their sources.
The combined use of pulsed Doppler ultrasonic imaging and ocular pneumoplethysmography provides accurate anatomic and hemodynamic information for evaluating carotid occlusive disease.
Pulsed Doppler ultrasonic imaging (UI) of the cervical carotid artery provides flow-dependent anatomic detail of the carotid bifurcation, while oculoplethysmography (Kartchner) (OPG-K) and ocular pneumoplethysmography (Gee) (OPG-G) reflect changes in flow and pressure resulting from hemodynamically significant lesions. We examined 66 patients prospectively with UI, OPG-K, and OPG-G to compare the relative accuracy of these techniques with contrast arteriography. Both UI and OPG-G were significantly more accurate than OPG-K. While the accuracies of UI and OPG-G were not significantly different, their combined use resulted in a significant increase in sensitivity compared with that of Doppler imaging alone. In addition, UI correctly identified 22 (85%) of 26 occlusions of the internal carotid artery. The use of UI and OPG-G together provided accurate anatomic and hemodynamic information useful in the evaluation of carotid occlusive disease.
No takes yet. Share an insight, caveat, or question.
Dean H. Wasserman (1983) conducted an observational in Carotid occlusive disease (n=66). Ultrasonic imaging (UI) and oculoplethysmography (OPG-K and OPG-G) vs. Contrast arteriography was evaluated on Relative accuracy of UI, OPG-K, and OPG-G compared with contrast arteriography. Combined use of ultrasonic imaging and OPG-G significantly increased diagnostic sensitivity compared to Doppler imaging alone, with UI correctly identifying 85% of internal carotid artery occlusions.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: