Transvalvular Pressure Gradients and All-Cause Mortality Following TAVR: A Multicenter Echocardiographic and Invasive Registry.

Khalili, Houman; Pibarot, Philippe; Hahn, Rebecca T; Elmariah, Sammy; Pilgrim, Thomas; Bavry, Anthony A; Maini, Brijeshwar; Okuno, Taishi; Al-Azizi, Karim; Waggoner, Thomas E; Mack, Michael; Rodès-Cabau, Joseph; Abbas, Amr E (2022). Transvalvular Pressure Gradients and All-Cause Mortality Following TAVR: A Multicenter Echocardiographic and Invasive Registry. JACC. Cardiovascular Interventions, 15(18), pp. 1837-1848. Elsevier 10.1016/j.jcin.2022.07.033

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BACKGROUND

Low ejection fraction (EF) and low flow as determined by an echocardiographic stroke volume index (SVi) <35 mL/m2 are associated with low transvalvular gradients and increased mortality in both severe aortic stenosis (AS) and post-transcatheter aortic valve replacement (TAVR). Absence of an elevated echocardiographic transaortic gradient post-TAVR is considered a marker of procedural success despite the absence of data on its impact on mortality.

OBJECTIVES

The authors sought to examine the association of invasive and echocardiographic gradients post-TAVR with all-cause mortality in relation to flow and EF.

METHODS

In a multicenter retrospective registry of patients undergoing TAVR, Cox models with regression splines explored the relationship between invasive and echocardiographic gradients post-TAVR with 2-year mortality. An invasive gradient <5 mm Hg was considered low, between ≥5 and <10 mm Hg was considered intermediate, and ≥10 mm Hg was considered high. An echocardiographic gradient <10 mm Hg was considered low, ≥10 and <20 mm Hg was considered intermediate, and ≥20 mm Hg was considered high.

RESULTS

Higher mortality occurred in low echocardiographic gradients at discharge relative to intermediate gradients (P < 0.001), and low gradient was associated with lower EF and echocardiographic SVi (P < 0.001 and P < 0.008, respectively). Lower mortality occurred in low invasive gradients relative to intermediate gradients (P = 0.012) with no difference in EF and echocardiographic SVi between groups (P = 0.089 and P = 0.947, respectively). There were insufficient observations to determine the impact of high echocardiographic and invasive gradients on mortality.

CONCLUSIONS

In this large retrospective analysis, the impact of transaortic gradients on mortality after TAVR was not linear and complex, showing opposite results among echocardiographic and invasive measurements in low-gradient patients.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Cardiovascular Disorders (DHGE) > Clinic of Cardiology

UniBE Contributor:

Pilgrim, Thomas, Okuno, Taishi

Subjects:

600 Technology > 610 Medicine & health

ISSN:

1876-7605

Publisher:

Elsevier

Language:

English

Submitter:

Pubmed Import

Date Deposited:

26 Sep 2022 09:35

Last Modified:

05 Dec 2022 16:25

Publisher DOI:

10.1016/j.jcin.2022.07.033

PubMed ID:

36137687

Uncontrolled Keywords:

Bernoulli discordance echocardiography gradients invasive pressure recovery

BORIS DOI:

10.48350/173204

URI:

https://boris.unibe.ch/id/eprint/173204

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