The prevalence and risk factors of acute kidney injury (AKI) among very elderly patients after percutaneous coronary intervention (PCI): a multi-center, retrospective cohort study

Certificate Output Instructions

For best output, select "Paper Size" as "A4" and "Margin" as "0" or "None".

To save or print to PDF, please select Print Destination > Save as PDF, enable Background Graphics under "More Settings", then click "Save".

Presented the abstract " "
(Abstract co-author(s): )

Back

E-Poster Presentation

During the congress, E-Posters will be accessible to all participants on the congress website 24/7, as well as in the E-poster stations in the congress center.

Preparing your E-Poster

Please review the E-Poster format requirements carefully when preparing your E-Poster. Should your E-Poster not meet the mentioned requirements, it may not be displayed as described above.

E-Poster Submission Deadline

Please prepare and upload your E-Poster no later than March 14, 2026 11.59PM CET. After this date, you will no longer be able to prepare and upload your E-poster and it will not be displayed and accessible on the congress website.

E-Poster Format Requirements

PDF file
Layout: Portrait (vertical orientation)
One page only (Dim A4: 210 x 297mm or PPT)
E-Poster can be prepared in PowerPoint (one (1) PowerPoint slide) but must be saved and submitted as PDF file.
File Size: Maximum file size is 2 Megabytes (2 MB)
No hyperlinks, animated images, animations, and slide transitions
Language: English
Include your abstract number
E-posters can include QR codes, tables and photos

E-Poster

Abstract Title *

The prevalence and risk factors of acute kidney injury (AKI) among very elderly patients after percutaneous coronary intervention (PCI): a multi-center, retrospective cohort study

Please follow the instructions below to input your abstract title.

Abstract titles should be brief and reflect the content of the abstract.

The title will not be accepted if it exceeds 25 words.
Type in CAPITAL LETTERS.
Lowercase may be used for abbreviations only, for example, mRNA.

Co-author 1

Xin Liu liuxin3368@bjhmoh.cn Beijing Hospital Department of Nephrology Beijing China *

Co-author 2

Dingyi Wang wg_snake@163.com China-Japan Friendship Hospital National Center for Respiratory Diseases Beijing China -

Co-author 3

Wenduo Zhang drzhangwenduo@163.com Beijing Hospital Department of Cardiology Beijing China -

Co-author 4

Guohui Fan fanguohui08@163.com China-Japan Friendship Hospital National Center for Respiratory Diseases Beijing China -

Co-author 5

Co-author 6

Co-author 7

Co-author 8

Co-author 9

Co-author 10

Co-author 11

Co-author 12

Co-author 13

Co-author 14

Co-author 15

Introduction

To investigate the incidence and risk factors of acute kidney injury (AKI) after percutaneous coronary intervention (PCI) in very elderly patients (≥80 years), particularly among those with baseline renal insufficiency

Methods

This retrospective cohort study included patients ≥80 years undergoing PCI at two tertiary hospitals in China (between January 2020 and December 2024). Baseline renal dysfunction was defined as eGFR <60 mL/min/1.73m² before PCI. The primary endpoint was AKI (and staging) after PCI, diagnosed according to KDIGO criteria. Secondary endpoints included in-hospital mortality, renal replacement therapy, and length of hospital stay. Logistic regression was applied to identify AKI risk factors. Restricted cubic splines (RCS, 4 knots) were conducted to explore the relationship between baseline eGFR and AKI, after adjustment of multivariable.

Results

Among the 995 patients included in final analysis, the incidence of post-PCI AKI was 13.8%. AKI incidence was 29.7% in those with baseline renal insufficiency (35.9% of the total cohort). STEMI, NSTEMI, acute heart failure, baseline renal insufficiency, higher neutrophil-to-lymphocyte ratio (NLR), and anemia were independent AKI risk factors. In patients with baseline renal insufficiency, lower baseline eGFR, elevated NLR, and preoperative diuretic use were independent risk factors. RCS analysis revealed significantly increased AKI risk (OR>1) when eGFR was <67.4 mL/min/1.73m², regardless of hydration therapy.

Conclusion

Very elderly patients with baseline renal insufficiency face a significantly higher AKI risk after PCI procedure. Comprehensive strategies beyond hydration may be needed for AKI prevention in very elderly PCI patients with renal insufficiency.

Kewords