Background: The renal artery is often involved in aortic dissection, leading to kidney ischaemia and renal dysfunction. However, some patients with aortic dissection with combined renal artery involvement do not show clinical renal dysfunction. This study aimed to analyse the relationship between renal artery involvement and renal function.
Methods: Data and images were collected from 79 patients (Group A), in Beijing Anzhen hospital between January 2015 and December 2017, who had type A aortic dissection, in order to analyse the relationship between renal artery involvement and serum creatinine. In order to further analyse the relationship between renal artery involvement and single kidney function, data from 27 patients (Group B) with aortic dissection from August 2018 to October 2018 were collected. Renal dynamic imaging was conducted, and clinical and image data were recorded.
Results: Results showed that patients with one partially occluded renal artery had higher variance of serum creatinine after surgery compared with patients with one false-lumen renal artery (5.8±22.7 μmol/L vs -18.7±22.7 μmol/L; p=0.003). The glomerular filtration rate of a single kidney that had a partially occluded renal artery was lower than that of a single kidney with a normal renal artery (37.77±9.57 vs 42.73±10.54; p=0.04).
Conclusions: A partially occluded renal artery in aortic dissection was associated with impaired renal function after surgery, even though patients did not present high serum creatinine. More attention should be paid to those experiencing aortic dissection.
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