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986 results on '"Goldenberg I"'

1. Ablation of hemodynamically unstable ventricular tachycardia guided by ultra-high density pacemapping and PASO correlation map, a multi-center clinical trial

Author

Huang, D, primary, Chuprun, D, additional, Aktas, M, additional, Chong-Yik, R, additional, Gallagher, J, additional, Hall, B, additional, Ojo, A, additional, Nof, E, additional, Tankut, S, additional, White, C, additional, Armenia, E, additional, Haswell, J, additional, Mcnitt, S, additional, Rosero, S, additional, and Goldenberg, I, additional

Published
2024
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6. Sex-differences in ventricular tachyarrhythmia events in patients with implantable cardioverter defibrillator and prior ventricular tachyarrhythmias

Author

Krzowski, B, primary, Kutyifa, V, additional, Vloka, M, additional, Huang, D T, additional, Aktas, M, additional, Musat, D, additional, Rosenthal, L, additional, Sakaguchi, S, additional, Mcnitt, S, additional, Polonsky, S, additional, Schuger, C, additional, Daubert, J P, additional, Goldenberg, I, additional, and Zareba, W, additional

Published
2023
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8. Coding for Parallel Channels: Gallager Bounds for Binary Linear Codes with Applications to Repeat-Accumulate Codes and Variations

Author

Sason, I. and Goldenberg, I.

Subjects
Computer Science - Information Theory
Abstract

This paper is focused on the performance analysis of binary linear block codes (or ensembles) whose transmission takes place over independent and memoryless parallel channels. New upper bounds on the maximum-likelihood (ML) decoding error probability are derived. These bounds are applied to various ensembles of turbo-like codes, focusing especially on repeat-accumulate codes and their recent variations which possess low encoding and decoding complexity and exhibit remarkable performance under iterative decoding. The framework of the second version of the Duman and Salehi (DS2) bounds is generalized to the case of parallel channels, along with the derivation of their optimized tilting measures. The connection between the generalized DS2 and the 1961 Gallager bounds, addressed by Divsalar and by Sason and Shamai for a single channel, is explored in the case of an arbitrary number of independent parallel channels. The generalization of the DS2 bound for parallel channels enables to re-derive specific bounds which were originally derived by Liu et al. as special cases of the Gallager bound. In the asymptotic case where we let the block length tend to infinity, the new bounds are used to obtain improved inner bounds on the attainable channel regions under ML decoding. The tightness of the new bounds for independent parallel channels is exemplified for structured ensembles of turbo-like codes. The improved bounds with their optimized tilting measures show, irrespectively of the block length of the codes, an improvement over the union bound and other previously reported bounds for independent parallel channels; this improvement is especially pronounced for moderate to large block lengths., Comment: Submitted to IEEE Trans. on Information Theory, June 2006 (57 pages, 9 figures)

Published
2006

12. Combining diastolic dysfunction and natriuretic peptides to risk stratify patients with heart failure with reduced ejection fraction

Author

Gori, M, Claggett, B, Senni, M, Shah, A, Goldenberg, I, Kutyifa, V, Knappe, D, Pouleur, A, Solomon, S, Gori M, Claggett B, Senni M, Shah AM, Goldenberg I, Kutyifa V, Knappe D, Pouleur AC, Solomon SD, Gori, M, Claggett, B, Senni, M, Shah, A, Goldenberg, I, Kutyifa, V, Knappe, D, Pouleur, A, Solomon, S, Gori M, Claggett B, Senni M, Shah AM, Goldenberg I, Kutyifa V, Knappe D, Pouleur AC, and Solomon SD

Abstract

Background: Diastolic dysfunction (DD) might help to risk stratify patients with heart failure (HF) with reduced ejection fraction (HFrEF). Nonetheless, HF guidelines/risk scores don't consider DD. We aimed to show the independent prognostic value of DD for nonfatal HF/death in patients with HFrEF on top of natriuretic peptides (NP). Methods: We analyzed 1155 baseline echocardiograms of the MADIT-CRT study (LVEF≤30%, QRS ≥ 130 ms, NYHA class I/II), classifying DD according to 2016 ASE/EACVI classification. Results: Patients were 64 ± 11 years-old, 24% females, LVEF was 24 ± 5%, 58% had abnormal BNP (≥100 pg/ml). While 45% had impaired relaxation, 33% had pseudonormal filling, 12% restrictive pattern, 6% indeterminate diastolic function, 4% were not classifiable due to missing data. During a follow-up of 2.1 ± 1.0 years, there were 233 HF/death. Compared to patients without pseudonormal/restrictive filling and with normal NP (23%), patients with pseudonormal/restrictive filling, alone (15%) or combined to elevated NP (30%), were at higher risk of events (respectively padj = 0.025 and padj < 0.001), as opposed to those with abnormal NP alone (22%; padj = 0.55). Adding DD to conventional markers of risk and NP improved prediction (C-statistic 0.733 versus 0.708, p = 0.024). DD was the first parameter to be considered to risk stratify MADIT-CRT population, according to Classification-And-Regression-Tree analysis. Conclusions: Among HFrEF patients with mild symptoms, pseudonormal/restrictive filling, either alone or combined with elevated NP, was associated with high risk of events, as opposed to isolated elevation of NP. DD provided incremental risk prediction for death/HF beyond commonly used markers. These data might suggest to integrate DD into HF guidelines/risk scores.

Published
2021

14. Assessment of absolute risk of life-threatening cardiac events in long QT syndrome patients

Author

Wang, M, Peterson, D, Pagan, E, Bagnardi, V, Mazzanti, A, Mcnitt, S, Rich, D, Seplaki, C, Kutyifa, V, Polonsky, B, Barsheshet, A, Kukavica, D, Rosero, S, Goldenberg, I, Priori, S, Zareba, W, Wang, M, Peterson, D, Pagan, E, Bagnardi, V, Mazzanti, A, Mcnitt, S, Rich, D, Seplaki, C, Kutyifa, V, Polonsky, B, Barsheshet, A, Kukavica, D, Rosero, S, Goldenberg, I, Priori, S, and Zareba, W

Abstract

Background: Risk stratification in long QT syndrome (LQTS) patients is important for optimizing patient care and informing clinical decision making. We developed a risk prediction algorithm with prediction of 5-year absolute risk of the first life-threatening arrhythmic event [defined as aborted cardiac arrest, sudden cardiac death, or appropriate implantable cardioverter defibrillator (ICD) shock] in LQTS patients, accounting for individual risk factors and their changes over time. Methods: Rochester-based LQTS Registry included the phenotypic cohort consisting of 1,509 LQTS patients with a QTc ≥ 470 ms, and the genotypic cohort including 1,288 patients with single LQT1, LQT2, or LQT3 mutation. We developed two separate risk prediction models which included pre-specified time-dependent covariates of beta-blocker use, syncope (never, syncope while off beta blockers, and syncope while on beta blockers), and sex by age < and ≥13 years, baseline QTc, and genotype (for the genotypic cohort only). Follow-up started from enrollment in the registry and was censored at patients’ 50s birthday, date of death due to reasons other than sudden cardiac death, or last contact, whichever occurred first. The predictive models were externally validated in an independent cohort of 1,481 LQTS patients from Pavia, Italy. Results: In Rochester dataset, there were 77 endpoints in the phenotypic cohort during a median follow-up of 9.0 years, and 47 endpoints in the genotypic cohort during a median follow-up of 9.8 years. The time-dependent extension of Harrell’s generalized C-statistics for the phenotypic model and genotypic model were 0.784 (95% CI: 0.740–0.827) and 0.785 (95% CI: 0.721–0.849), respectively, in the Rochester cohort. The C-statistics obtained from external validation in the Pavia cohort were 0.700 (95% CI: 0.610–0.790) and 0.711 (95% CI: 0.631–0.792) for the two models, respectively. Based on the above models, an online risk calculator estimating a 5-year risk of life-t

Published
2022

19. The Addict and Ex-Addict in the World of Work: Job Finding Experiences and Performance in Employment. Final Report.

Author

Massachusetts Advocacy Center, Boston. and Goldenberg, I. Ira

Abstract

The purpose of the study was to investigate three separate aspects of the process by which ex-addicts-in-treatment are prepared for, enter into, and function in the world of work. These aspects were the actual labor market conditions in two different urban settings--New York City and the greater Boston area; the specific institutional supports available to ex-addicts and addicts-in-treatment as those supports are perceived by both clients and providers of service; and an analysis, by employers, of the performance and behavior of ex-addicts and addicts-in-treatment once they have secured employment. Surveys were taken to define the practices of drug treatment programs. In addition, a questionnaire was developed to isolate the key employment related issues and practices that comprise clients' and providers of service' perceptions of the rehabilitative situation. Finally, through the development of a specific relationship with PACT (Provide Addicts Care Today), the job-related behavior of ex-addicts and addicts-in-treatment was assessed. Results indicated that (1) the two urban labor markets examined offer only limited options for meaningful, remunerative, and stable employment, (2) drug treatment programs, despite stated priorities involving preparation for employment, are neither structured, funded, nor staffed to adequately provide concrete employment related services, (3) clients rely more on their own rather limited resources in order to gain employment, and (4) ex-addicts who are hired and retained are rated by employers as above average in performance, compared to non-addicts. (SH)

Published
1975

20. Psychotherapy and the Psychotherapist: The Non-Professional as Clinician Change Agent.

Author

American Psychological Association, Washington, DC., Harvard Univ., Cambridge, MA., and Goldenberg, I. Ira

Abstract

Current research in psychotherapy is indicted because: (1) it omits the question of social or political values; and (2) it fails to come to grips with the fact that social, political and economic institutions are a large part of the problems of those who need help the most. Poverty is defined in psychological terms as a pattern of hopelessness and helplessness, of feeling limited and expendable. In these terms, psychotherapy is viewed as excluding the old, the black, the poor and the ignorant. Given the absence of hard data supporting the effectiveness of psychotherapy with these individuals, a case is made for the use of non-prfessionals in mental health efforts which could serve this unserved population. In line with this, it is proposed that psychotherapy must couple individual remediation with attempts at institutional change. A residential youth center, formed by the author and a group of non-professionals in New Haven's ghettos, is offered as an example. Twenty youngsters, aged 16-21, previously adjudged to have almost insurmountable problems, were admitted. A control group was used. Results showed increased work attendance, increased incomes, and decreased arrests and time in jail. Also, the group came to feel less alienated and more trustful than the control group. (TL)

Published
1970

47. Initial findings using the V8 hourglass-shaped valvuloplasty balloon for postdilatation in treating paravalvular leaks associated with transcatheter self-expanding aortic valve prosthesis

Author

Latib A, Pedersen W, Maisano F, Lesser J, Ruparelia N, Figini F, Colombo A, Poulose A, Kolbeck J, Mooney M, Schwartz R, Youssef A, Ungs D, Goldenberg I, Sorajja P, Latib, A, Pedersen, W, Maisano, F, Lesser, J, Ruparelia, N, Figini, F, Colombo, A, Poulose, A, Kolbeck, J, Mooney, M, Schwartz, R, Youssef, A, Ungs, D, Goldenberg, I, and Sorajja, P

Published
2016

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