[Comparison of quantitative computerized angiography and intravascular ultrasound in assessment of renal artery stenosis in patients with renovascular hypertension treated with percutaneous transluminal angioplasty with concomitant intravascular brachytherapy].
Renal Angiography and IntraVascular UltraSonography (IVUS), are valuable diagnosis methods for assessment of renovascular hypertension (RVH). Endovascular techniques employing percutaneous transluminal renal angioplasty (PTRA) are effective for therapy of ischaemic nephropathy in patients with RVH. Success of PTRA is limited by a significant rate of restenosis. THE AIM OF STUDY was to compare the assessment of residual stenosis and restenosis with angiography and IVUS.


METHODS
Residual stenosis after PTRA (combine with intravascular brachyterapy in 33 patients--group I) were assessed in 62 RVH patients with angiography and IVUS techniques. Both baseline and 9-month follow-up quantitative computerized angiography (QCA) and intravascular ultrasound (IVUS) analysis were performed to assess restenosis.


RESULTS
Residual stenosis after PTRA of atherosclerotic lesions was slightly lower with QCA than IVUS (in group I 15.49 +/- 4.69% and 18.81 +/- 4.81% and in group II 15.36 +/- 4.68% and 18.43 +/- 4.69%, respectively). The loss of lumen area in QCA assessment was slightly greater than in IVUS measurement (1.2 +/- 0.7 mm vs. 0.9 +/- 0.8 mm in group I i 1.7 +/- 0.7 mm vs. 1.5 +/- 0.8 mm in group II). The angiographic measurements of late lumen loss, diameter stenosis, and minimal lumen diameter correlated well with IVUS measurements (r = 0.81, r = 0.89 and r = 0.89 respectively).


CONCLUSIONS
Angiography and IVUS are equally effective methods for diagnosis and assessment of residual stenosis and restenosis after endovascular renal artery revascularisation.
Lekston
Andrzej
A
3 Klinika Kardiologii, Slaskie Centrum Chorób Serca, Zabrze. alekstonhemo@sccs.pl
Niklewski
Tomasz
T
Szkodziński
Jan
J
Gasior
Mariusz
M
Gierlotka
Marek
M
Chudek
Jerzy
J
Wiecek
Andrzej
A
Kokot
Franciszek
F
Fijałkowski
Marek
M
Białas
Brygida
B
Osadnik
Tadeusz
T
Maciejewski
Bogusław
B
Poloński
Lech
L
D015901:Angiography, Digital Subtraction; D000800:Angioplasty, Balloon; D001918:Brachytherapy; D005260:Female; D006801:Humans; D006978:Hypertension, Renovascular / Q000150:complications* / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D012008:Recurrence; D012078:Renal Artery Obstruction / Q000000981:diagnostic imaging* / Q000209:etiology; D016896:Treatment Outcome; D018084:Ultrasonography, Interventional