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ARTICLE |

Detection of Technical Error During Arterial Surgery by Pulsed Doppler Spectral Analysis

Dennis F. Bandyk, MD; R. Eugene Zierler, MD; Brian L. Thiele, MD
Arch Surg. 1984;119(4):421-428. doi:10.1001/archsurg.1984.01390160051011.
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• Pulsed Doppler spectral analysis of midstream flow was compared with arteriography in 90 patients following carotid endarterectomy (N=60) or lower-extremity bypass grafting (N = 30) for the detection of unsuspected technical error. Spectral changes in the velocity waveform indicating flow disturbance were identified in the endarterectomy or anastomotic sites of 11 patients (12%). All were associated with an anatomic defect apparent on arteriography. The revision of major defects in six patients (7%) corrected the flow disturbance. The absence of flow disturbance in 79 patients (88%) predicted a technically satisfactory arterial reconstruction. Intraoperative assessment by pulsed Doppler spectral analysis is a noninvasive, rapid, and accurate method for detecting technical errors during arterial surgery. The high sensitivity of this method makes it suitable for use as a screening test, resulting In the selective use of operative arteriography.

(Arch Surg 1984;119:421-428)

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