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Your search keyword '"Bregasi, Alda"' showing total 25 results
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25 results on '"Bregasi, Alda"'

5. Segmentation of 4D Echocardiography Using Stochastic Online Dictionary Learning

Author

Huang, Xiaojie, Dione, Donald P., Lin, Ben A., Bregasi, Alda, Sinusas, Albert J., Duncan, James S., Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Mori, Kensaku, editor, Sakuma, Ichiro, editor, Sato, Yoshinobu, editor, Barillot, Christian, editor, and Navab, Nassir, editor

Published
2013
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6. Abnormal left atrial body stiffness is predicted by appendage size: impact of appendage occlusion on left atrial mechanics assessed by pressure-volume analysis

Author

Bregasi, Alda, primary, Freeman, James V., additional, Curtis, Jeptha P., additional, Akar, Joseph G., additional, Ortiz-Leon, Xochitl A., additional, Maia, Julia H., additional, Higgins, Angela Y., additional, Matthews, Ray V., additional, Sinusas, Albert J., additional, McNamara, Robert L., additional, Sugeng, Lissa, additional, and Lin, Ben A., additional

Published
2022
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9. Changes In Left Atrial Appendage Orifice Following Percutaneous Left Atrial Appendage Closure Using Three-Dimensional Echocardiography

Author

Ortiz-Leon, Xochitl Arely, primary, Posada-Martinez, Edith Liliana, additional, Bregasi, Alda, additional, Chen, Wanwen, additional, Crandall, Ian, additional, Pereira, Jason, additional, Faridi, Kamil F., additional, Akar, Joseph G., additional, Lin, Ben A., additional, McNamara, Robert L., additional, Freeman, James V., additional, Curtis, Jeptha, additional, Arias-Godinez, Jose Antonio, additional, and Sugeng, Lissa, additional

Published
2021
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12. CHANGES OF LEFT ATRIAL APPENDAGE ORIFICE FOLLOWING PERCUTANEOUS LEFT ATRIAL APPENDAGE CLOSURE USING THREE-DIMENSIONAL ECHOCARDIOGRAPHY

Author

Ortiz-Leon, Xochitl, primary, Posada, Edith, additional, Chen, Wanwen, additional, Bregasi, Alda, additional, Crandall, Ian, additional, Pereira, Jason, additional, Miranda, Juan Betuel Ivey, additional, Akar, Joseph, additional, Lin, Ben A., additional, McNamara, Robert, additional, Freeman, James, additional, Curtis, Jeptha P., additional, Arias-Godínez, José Antonio, additional, and Sugeng, Lissa, additional

Published
2020
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13. ACUTE STRUCTURAL CHANGES IN TRICUSPID ANNULUS FOLLOWING TAVR

Author

Posada, Edith, primary, Bregasi, Alda, additional, Ortiz, Xochitl, additional, Ivey-Miranda, Juan B., additional, Paredes, Maria, additional, Lin, Ben A., additional, McNamara, Robert, additional, Hur, David, additional, Lombo, Bernardo, additional, Arias, Antonio, additional, Crandall, Ian, additional, Pereira, Jason, additional, and Sugeng, Lissa, additional

Published
2020
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19. Abstract 19973: Dynamic Thallium-201 SPECT/CT Provides Quantitative Index of Myocardial Flow and Viability: Validation in Porcine Post-Myocardial Infarction Model

Author

Thorn, Stephanie L, primary, Stacy, Mitchel R, additional, Bregasi, Alda, additional, Paeng, Jin C, additional, Tavakoli, Vahid A, additional, Winters, James O, additional, Hawley, Chris, additional, Tang, Yangfeng, additional, Bennett, James, additional, Wells, R. G, additional, Liu, Chi, additional, Klein, Ran, additional, and Sinusas, Albert J, additional

Published
2014
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25. Abnormal left atrial body stiffness is predicted by appendage size: impact of appendage occlusion on left atrial mechanics assessed by pressure-volume analysis.

Author

Bregasi A, Freeman JV, Curtis JP, Akar JG, Ortiz-Leon XA, Maia JH, Higgins AY, Matthews RV, Sinusas AJ, McNamara RL, Sugeng L, and Lin BA

Subjects
Cardiac Catheterization, Echocardiography, Transesophageal methods, Humans, Treatment Outcome, Atrial Appendage diagnostic imaging, Atrial Fibrillation diagnostic imaging, Atrial Fibrillation etiology, Stroke etiology, Vascular Diseases
Abstract

Atrial cardiomyopathy has been recognized as having important consequences for cardiac performance and clinical outcomes. The pathophysiological role of the left atrial (LA) appendage and the effect of percutaneous left atrial appendage occlusion (LAAO) upon LA mechanics is incompletely understood. We evaluated if changes in LA stiffness due to endocardial LAAO can be detected by LA pressure-volume (PV) analysis and whether stiffness parameters are associated with baseline characteristics. Patients undergoing percutaneous endocardial LAAO ( n = 25) were studied using a novel PV analysis using near-simultaneous three-dimensional LA volume measurements by transesophageal echocardiography (TEE) and direct invasive LA pressure measurements. LA stiffness (dP/dV, change in pressure with change in volume) was calculated before and after LAAO. Overall LA stiffness significantly increased after LAAO compared with baseline (median, 0.41-0.64 mmHg/mL; P ≪ 0.001). LA body stiffness after LAAO correlated with baseline LA appendage size by indexed maximum depth (Spearman's rank correlation coefficient R s = 0.61; P < 0.01). LA stiffness change showed an even stronger correlation with baseline LA appendage size by indexed maximum depth ( R s = 0.70; P < 0.001). We found that overall LA stiffness increases after endocardial LAAO. Baseline LA appendage size correlates with the magnitude of increase and LA body stiffness. These findings document alteration of LA mechanics after endocardial LAAO and suggest that the LA appendage modulates overall LA compliance. NEW & NOTEWORTHY Our study documents a correlation of LA appendage remodeling with the degree of chronically abnormal LA body stiffness. In addition, we found that LA appendage size was the baseline parameter that best correlated with the magnitude of a further increase in overall LA stiffness after appendage occlusion. These findings offer insights about the LA appendage and LA mechanics that are relevant to patients at risk for adverse atrial remodeling, especially candidates for LA appendage occlusion.

Published
2022
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