Renal Artery Stenosis: Changes in Intrarenal Doppler Waveform Following Percutaneous Transluminal Angioplasty
- Radiologische Klinik, Klinikum Barmen, Universitaet Witten-Herdecke, Heusnerstrasse 40, D-42283 Wuppertal (Germany)
Purpose: To examine the extent of the changes in the intrarenal spectral waveform patterns after percutaneous transluminal angioplasty (PTA) and whether there is a correlation with the angiographic and clinical results. Methods: In 44 patients with 68 PTAs we analyzed the intrarenal spectral waveform regarding the existence of a tardus-parvus pattern before and after PTA. Results: In 51 of the 60 cases with a tardus-parvus pattern prior to PTA, a complete normalization of the spectral waveform was noted. There was no correlation between the Doppler result after PTA and the angiographic and clinical result. In contrast there was a significant correlation between the Doppler result before PTA and the clinical outcome: patients with a normal intrarenal spectral waveform before PTA showed no improvement in their arterial hypertension. Conclusion: Our results indicate that a patient with a normal spectral waveform analysis does not response to PTA. However, there is still an unpredictable clinical response even if a patient has an abnormal intrarenal spectral waveform prior to PTA and a complete normalization after PTA.
- OSTI ID:
- 21080377
- Journal Information:
- Cardiovascular and Interventional Radiology, Vol. 21, Issue 5; Other Information: DOI: 10.1007/s002709900284; Copyright (c) 1998 Springer-Verlag New York Inc; Country of input: International Atomic Energy Agency (IAEA); ISSN 0174-1551
- Country of Publication:
- United States
- Language:
- English
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