TY - JOUR
T1 - The prognostic importance of the diastolic pulmonary gradient, transpulmonary gradient, and pulmonary vascular resistance in patients undergoing transcatheter aortic valve replacement
AU - Brunner, Nathan W.
AU - Yue, Su Fei
AU - Stub, Dion
AU - Ye, Jian
AU - Cheung, Anson
AU - Leipsic, Jonathon
AU - Lauck, Sandra
AU - Dvir, Danny
AU - Perlman, Gidon
AU - Htun, Nay
AU - Fahmy, Peter
AU - Prakash, Roshan
AU - Eng, Lim
AU - Ong, Kevin
AU - Tsang, Michael
AU - Cairns, John A.
AU - Webb, John G.
AU - Wood, David A.
PY - 2017/12/1
Y1 - 2017/12/1
N2 - 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.
AB - 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.
KW - Diastolic pulmonary gradient
KW - Mortality
KW - Pulmonary hypertension
KW - Pulmonary vascular resistance
KW - Transcatheter aortic valve replacement
UR - http://www.scopus.com/inward/record.url?scp=85018373211&partnerID=8YFLogxK
U2 - 10.1002/ccd.27107
DO - 10.1002/ccd.27107
M3 - Article
AN - SCOPUS:85018373211
SN - 1522-1946
VL - 90
SP - 1185
EP - 1191
JO - Catheterization and Cardiovascular Interventions
JF - Catheterization and Cardiovascular Interventions
IS - 7
ER -