Vol 79, No 11 (2021)
Original article
Published online: 2021-09-28

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Association between Intermountain Risk Score and long-term mortality with the transcatheter aortic valve implantation procedure

Emre Özdemir1, Şaban Esen1, Sadık Volkan Emren1, Mustafa Karaca1, Cem Nazlı1
Pubmed: 34599498
Kardiol Pol 2021;79(11):1215-1222.

Abstract

Background: Since its first introduction, the spectrum and frequency of use of transcatheter aortic valve implantation (TAVI) have increased throughout the world. Therefore, it is crucial to determine which patients are at high mortality risk with TAVI. The Intermountain Risk Score (IMRS) is a score calculated from laboratory parameters. This study aimed to determine the long-term mortality of TAVI patients using the IMRS and to compare it with traditional scoring systems.
Methods: The study included a total of 133 patients undergoing TAVI at our hospital from 2010 to 2019. Demographic data, co-morbid diseases, echocardiographic and laboratory parameters were collected retrospectively. The performance of IMRS was assessed as compared to the mortality determined in the overall patient population.
Results: During the follow-up, 54.9% of patients (60 patients) (Group 1) survived; the mortality in Group 2 (60 patients) was 45.1%. The survival period had a mean of 1433 (±124) days. The mean IMRS was 1.67 (0.7) in Group 1 and 2.33 (0.72) in Group 2 (P <0.001). In multivariable analyses, only high risk of IMRS (hazard ratio [HR], 3.430; 95% confidence interval [CI], 1.537–7.653; P = 0.003) and EuroSCORE II (HR, 1.141; 95% CI, 1.011–1.288; P = 0.03) independently predicted long-term mortality.
Conclusions: From the evaluation of all laboratory and echocardiography parameters, long-term mortality (>30 days) following the TAVI procedure can be said to be higher in patients with a high IMRS. The data from this study can be considered of value in demonstrating the clinical significance of IMRS calculation before the TAVI procedure.

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Polish Heart Journal (Kardiologia Polska)