Department of Veterinary Medicine, Federal University of Viçosa, Viçosa, Brazil.
J Feline Med Surg. 2023 Jan;25(1):1098612X221145477. doi: 10.1177/1098612X221145477.
Ultrasonography is used in the evaluation of urinary disorders, and the resistivity index (RI) and pulsatility index (PI) have been successfully used to detect early hemodynamic changes in the course of kidney diseases in humans and dogs. The aim of this study was to investigate RI and PI in cats with feline lower urinary tract disease (FLUTD).
Twenty-nine client-owned cats were selected and divided into a control group (CG; n = 10), a group of animals with obstructive FLUTD (OG; n = 11) and non-obstructive FLUTD (nOG; n = 8). Clinical, laboratory and ultrasound evaluations were performed in all cats.
RI and PI values for cats in the CG were below the upper limit of normal suggested in other studies, while cats with FLUTD showed significantly higher values in the assessment of RI ( = 0.027 and = 0.034, respectively) and PI ( = 0.044 and = 0.048, respectively) of the right and left kidneys.
Alteration in renal blood flow was observed in cats with lower urinary tract disorders, even in the nOG group. To the best of our knowledge, this is the first report of renal blood flow changes related to non-obstructive FLUTD.
超声检查用于评估泌尿系统疾病，阻力指数（RI）和搏动指数（PI）已成功用于检测人类和犬类肾脏疾病过程中的早期血液动力学变化。本研究旨在探讨下尿路疾病（FLUTD）猫的 RI 和 PI。
选择 29 只患猫并将其分为对照组（CG；n=10）、梗阻性 FLUTD 组（OG；n=11）和非梗阻性 FLUTD 组（nOG；n=8）。对所有猫进行临床、实验室和超声评估。
CG 猫的 RI 和 PI 值低于其他研究中建议的正常上限，而 FLUTD 猫的 RI（ = 0.027 和 = 0.034）和 PI（ = 0.044 和 = 0.048）的左右肾脏评估值明显更高。
下尿路疾病猫的肾血流发生改变，即使在 nOG 组也是如此。据我们所知，这是首次报道与非梗阻性 FLUTD 相关的肾血流变化。
