Journals / Ankara Üniversitesi Veteriner Fakültesi Dergisi / 2022 / Cilt: 69 - Sayı: 3

Evaluation of acute partial unilateral ureteral obstruction based on the renal venous impedance index in Rabbit: An experimental study

Tavşanlarda akut parsiyel unilateral üreteral obstruksiyonun renal venöz impedans indeks ile değerlendirilmesi: Deneysel çalışma

Pages
259–264
Publication Date
2022-10-12
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

The renal VIIΔ ≥0.16 can be enhanced the diagnostic accuracy of in APUUO if used as a combination of the RIΔ≥0.08 and RIr≥1.1.

📌 3 Key Takeaways

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Objective & Hypothesis:To investigate the feasibility of the venous impedance index (VII) in the diagnosis of acute partial unilateral ureteral obstruction (APUUO), in this study we aimed to measure and compare changes in intrarenal venous flow and arterial flow.
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Key Findings & Data:In New Zealand rabbits (n=10) the left ureter was narrowed by ligation.
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Conclusion & Impact:The renal VIIΔ ≥0.16 can be enhanced the diagnostic accuracy of in APUUO if used as a combination of the RIΔ≥0.08 and RIr≥1.1.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

To investigate the feasibility of the venous impedance index (VII) in the diagnosis of acute partial unilateral ureteral obstruction (APUUO), in this study we aimed to measure and compare changes in intrarenal venous flow and arterial flow. In New Zealand rabbits (n=10) the left ureter was narrowed by ligation. Doppler ultrasonographic (US) examination of the interlobar arteries and veins in both kidneys was performed preoperatively and 3, 6, 12, 24, and 48 h after ureteral ligation. Resistive index (RI), RI difference (RIΔ) and the RI ratio (RIr), and the VII difference (VIIΔ) were calculated from RI and VII obtained from the obstructive and nonobstructive kidneys. The RI and VII were postoperatively compared between the left and right kidneys. Although the mean RI for obstructive kidneys was higher than those for nonobstructive kidneys, the difference was only statistically significant at 3 and 24 h (P=0.007, and P=0.049, respectively). In all postoperative measurement times, RIΔ was ≥0.08 and RIr was ≥1.169, and the mean VII values were significantly lower in the obstructive kidneys than the nonobstructive kidneys (P≤0.002), and the VIIΔ was equal to or greather than 0.159. The venous flow was more affected than arterial flow in the obstructive kidney. The renal RI alone was insufficient as a diagnostic criterion. The renal VIIΔ ≥0.16 can be enhanced the diagnostic accuracy of in APUUO if used as a combination of the RIΔ≥0.08 and RIr≥1.1.

Özet

Akut parsiyel unilateral üreteral obstruksiyonda (APUUO)'nun tanısında venöz impedans indeksin (VII) uygulanabilirliğini araştırmak için bu çalışmada intrarenal venöz akım ve arteriyel akım arasındaki değişiklikleri ölçmeyi ve karşılaştırmayı amaçladık. Yeni Zelanda tavşanlarında (n=10) sol üreter ligasyonla daraltıldı. Her iki böbrekte interlobar arterlerin ve venlerin Doppler ultrasonografik (US) incelemesi preoperatif dönemde ve üreter ligasyonundan sonraki 3., 6., 12., 24. ve 48. saatlerde yapıldı. Resistif indeks (RI) farkı (RIΔ), RI oranı (RIr) ve VII farkı (VIIΔ) obstrüktif ve nonobstrüktif böbreklerden elde edilen RI ve VII’den hesaplandı. RI ve VII, bütün postoperatif ölçüm zamanlarında sol ve sağ böbrekler arasında karşılaştırıldı. Obstrüktif böbrek için ortalama RI, nonobstrüktif böbrekten daha yüksek olmasına rağmen, istatistiki fark sadece 3. ve 24. saatlerde önemliydi (sırasıyla P=0,007 ve P=0,049). Tüm postoperatif ölçüm zamanlarında RIΔ≥0,08 ve RIr≥1,169, ve ortalama VII değeri obstrüktif böbrekte nonobstrüktif böbrekten daha düşüktü (P≤0,002) ve VIIΔ değeri 0,159’a eşit veya daha yüksekti. Obstruktif böbrekte venöz akım, arteriyel akımdan daha fazla etkilendi. Tanısal bir kriter olarak renal RI'nin tek başına yetersiz olduğu belirlendi. Renal VIIΔ≥0,16 değeri, RIΔ≥0,08 ve RIr≥1,1 değerleri ile birlikte kullanılırsa, APUUO'nun tanısal doğruluğu arttırılabilir

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Cite This Article

KAYA, M., ÇETİNKAYA, M. A. (2022). Evaluation of acute partial unilateral ureteral obstruction based on the renal venous impedance index in Rabbit: An experimental study. Ankara Üniversitesi Veteriner Fakültesi Dergisi, Cilt: 69 - Sayı: 3, 259–264. https://ajindex.com/articles/444345

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