The prognostic importance of the diastolic pulmonary gradient, transpulmonary gradient, and pulmonary vascular resistance in patients undergoing transcatheter aortic valve replacement

Nathan W. Brunner, Su Fei Yue, Dion Stub, Jian Ye, Anson Cheung, Jonathon Leipsic, Sandra Lauck, Danny Dvir, Gidon Perlman, Nay Htun, Peter Fahmy, Roshan Prakash, Lim Eng, Kevin Ong, Michael Tsang, John A. Cairns, John G. Webb, David A. Wood

Research output: Contribution to journalArticleResearchpeer-review

5 Citations (Scopus)

Abstract

Objectives: To evaluate the association between markers of precapillary pulmonary hypertension (PH) and survival in transcatheter aortic valve replacement (TAVR). Background: The importance of precapillary PH has been sparsely investigated in patients undergoing TAVR. It may prove an important risk factor for poor outcomes. Methods: We identified patients at our institution undergoing TAVR with a baseline right heart catheterization (RHC) demonstrating PH. We evaluated the association between markers of precapillary PH and survival including the diastolic pulmonary gradient (DPG), transpulmonary gradient (TPG), and pulmonary vascular resistance (PVR). A multivariable analysis was performed using Cox Proportional Hazards Models, adjusting for age, gender, body mass index, and pulmonary artery systolic pressure (PASP) on echocardiography. Results: We identified 133 patients with PH on RHC. Of these 111 had low DPG and 22 had high DPG. All 3 markers of precapillary PH were associated with worse survival post TAVR, with OR of 2.1 (95% CI 1.1-3.9, P=0.02), 3.4 (95% CI 1.8-6.4, P<0.001) and 2.5 (95% CI 1.4-4.5, P=0.003) for high DPG, TPG, and PVR, respectively. On multivariable analysis, both TPG and PVR remained predictors of worse survival, with OR of 3.4 (95% CI 1.7-6.9, P=0.001) and 2.5 (95% CI 1.4-4.5, P=0.003). Echocardiographic PASP and DPG were not predictive of survival. Conclusions: In patients undergoing TAVR, parameters of precapillary PH are associated with lower survival, and provide incremental prognostication over echocardiographic PASP. RHC should continue to play an important role in risk stratification prior to TAVR.

Original languageEnglish
Pages (from-to)1185-1191
Number of pages7
JournalCatheterization and Cardiovascular Interventions
Volume90
Issue number7
DOIs
Publication statusPublished - 1 Dec 2017
Externally publishedYes

Keywords

  • Diastolic pulmonary gradient
  • Mortality
  • Pulmonary hypertension
  • Pulmonary vascular resistance
  • Transcatheter aortic valve replacement

Cite this

Brunner, N. W., Yue, S. F., Stub, D., Ye, J., Cheung, A., Leipsic, J., Lauck, S., Dvir, D., Perlman, G., Htun, N., Fahmy, P., Prakash, R., Eng, L., Ong, K., Tsang, M., Cairns, J. A., Webb, J. G., & Wood, D. A. (2017). The prognostic importance of the diastolic pulmonary gradient, transpulmonary gradient, and pulmonary vascular resistance in patients undergoing transcatheter aortic valve replacement. Catheterization and Cardiovascular Interventions, 90(7), 1185-1191. https://doi.org/10.1002/ccd.27107