Ascending Aorta Diameter Changes After Aortic Valve Replacement in Elderly Patients with Aortic Valve Stenosis

Overview

Journal Cardiol Res Pract

Publisher Wiley

Specialty Cardiology & Vascular Diseases

Date 2022 Sep 20

PMID 36124293

Authors

Jiamiao Gong

Kang An

Hongyuan Lin

Jianfeng Hou

Affiliations

Soon will be listed here.

Abstract

Objective: To describe the natural history of the ascending aorta in elderly patients after aortic valve replacement (AVR) for aortic valve stenosis and to clarify the risk factors associated with the progression of the ascending aorta.

Methods: This retrospective review included a total of 87 elderly patients who had undergone aortic valve replacement for severe aortic valve stenosis in Fuwai Hospital. The patients were categorized into two groups based on the height-based aortic height index (AHI) before AVR, as determined by echocardiography and computed tomography: Group ( = 28) was defined as an AHI > 2.44 cm/m, and Group ( = 59) was defined as an AHI ≤ 2.44 cm/m. The perioperative and follow-up data were collected, and a linear mixed-effect model was used to analyze and compare the change rate of the ascending aorta after AVR.

Results: The mean follow-up period was 4.0 ± 1.3 years. The diameter of ascending aorta in group increased from 37.2 ± 5.0 mm at discharge to 40.7 ± 4.7 mm at the last follow-up (=0.001), while that of group increased only from 33.3 ± 4.4 mm to 33.7 ± 4.1 mm ( > 0.05).The ascending aorta diameter expansive rate was 0.81 mm/year in group and 0.14 mm/year in group . The expansive rate was significantly greater in patients with an AHI>2.44 cm/m than in those with anything else ( = 0.009). A univariable linear mixed model analysis revealed that the AHI>2.44 cm/m was the only significant risk factor for ascending aortic dilatation rate after AVR. There were 4 patients who died in hospital and 11 late follow-up deaths. Particularly, there was no aortic event that occurred during follow-up.

Conclusion: For elderly patients with aortic stenosis, the possibility of progressive ascending aortic dilatation after AVR demands regular follow-up, and AHI may be an important risk factor for the change rate of the diameter of the ascending aorta.

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