Ioannis Toumpoulis

Dr. Ioannis Toumpoulis

1. Department of Cardiac Surgery, National and Kapodistrian University of Athens, 11528 Athens, Greece
+1
orcid

Research Focus & Metrics

Academic Career Length

24Years (2003-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
1 January 2005 in European Journal of Cardio-Thoracic Surgery
Verified
Journal Article
Closed access
Ioannis ToumpoulisIoannis Toumpoulis
Ioannis Toumpoulis
CAC Anagnostopoulos
C Anagnostopoulos
DSD Swistel
D Swistel
JDJ Derosejr
J Derosejr
To evaluate the performance of EuroSCORE in the prediction of in-hospital postoperative length of stay and specific major postoperative complications after cardiac surgery. Data on 5051 consecutive patients (isolated [74.4%] or combined coronary artery bypass grafting [11.1%], valve surgery [12.0%] and thoracic aortic surgery [2.5%]) were prospectively collected. The EuroSCORE model (standard and logistic) was used to predict in-hospital mortality, 3-month mortality, prolonged length of stay (>12 days) and major postoperative complications (intraoperative stroke, stroke over 24 h, postoperative myocardial infarction, deep sternal wound infection, re-exploration for bleeding, sepsis and/or endocarditis, gastrointestinal complications, postoperative renal failure and respiratory failure). A C statistic (or the area under the receiver operating characteristic curve) was used to test the discrimination of the EuroSCORE. The calibration of the model was assessed by the Hosmer-Lemeshow goodness-of-fit statistic. In-hospital mortality was 3.9% and 16.1% of patients had one or more major complications. Standard EuroSCORE showed very good discriminatory ability and good calibration in predicting in-hospital mortality (C statistic: 0.76, Hosmer-Lemeshow: P=0.449) and postoperative renal failure (C statistic: 0.79, Hosmer-Lemeshow: P=0.089) and good discriminatory ability in predicting sepsis and/or endocarditis (C statistic: 0.74, Hosmer-Lemeshow: P=0.653), 3-month mortality (C statistic: 0.73, Hosmer-Lemeshow: P=0.097), prolonged length of stay (C statistic: 0.71, Hosmer-Lemeshow: P=0.051) and respiratory failure (C statistic: 0.71, Hosmer-Lemeshow: P=0.714). There were no differences in terms of the discriminatory ability in predicting these outcomes between standard and logistic EuroSCORE. However, logistic EuroSCORE showed no calibration (Hosmer-Lemeshow: P<0.05) except for sepsis and/or endocarditis (Hosmer-Lemeshow: P=0.078). EuroSCORE was unable to predict other major complications such as intraoperative stroke, stroke over 24 h, postoperative myocardial infarction, deep sternal wound infection, gastrointestinal complications and re-exploration for bleeding. EuroSCORE can be used to predict not only in-hospital mortality, for which it was originally designed, but also 3-month mortality, prolonged length of stay and specific postoperative complications such as renal failure, sepsis and/or endocarditis and respiratory failure in the whole context of cardiac surgery. These outcomes can be predicted accurately using the standard EuroSCORE which is very simple and easy in its calculation.

1 June 2005 in The Annals of Thoracic Surgery
Verified
Journal Article
Closed access
Ioannis ToumpoulisIoannis Toumpoulis
Ioannis Toumpoulis
CAConstantine E. Anagnostopoulos
Constantine E. Anagnostopoulos
STStavros K. Toumpoulis
Stavros K. Toumpoulis
JDJoseph J. DeRose
Joseph J. DeRose
DSDaniel G. Swistel
Daniel G. Swistel

1 August 2008 in The American Journal of Cardiology
Verified
Journal Article
Closed access
Ioannis ToumpoulisIoannis Toumpoulis
Ioannis Toumpoulis
CAConstantine E. Anagnostopoulos
Constantine E. Anagnostopoulos
TCThemistocles P. Chamogeorgakis
Themistocles P. Chamogeorgakis
DADimitrios C. Angouras
Dimitrios C. Angouras
MKMaria A. Kariou
Maria A. Kariou
CRChris K. Rokkas
Chris K. Rokkas

22 June 2021 in Molecules
Verified
Journal Article
Open access
PDF file
JTJim Tsoporis
Jim Tsoporis
IDIoannis - Alexandros Drosatos
Ioannis - Alexandros Drosatos
JTJames Tsoporis
James Tsoporis
HAHajera Amatullah
Hajera Amatullah
SIShehla Izhar
Shehla Izhar
TPThomas G. Parker
Thomas G. Parker
DJ-1 was originally identified as an oncogene product while mutations of the gene encoding DJ-1/PARK7 were later associated with a recessive form of Parkinson’s disease. Its ubiquitous expression and diversity of function suggest that DJ-1 is also involved in mechanisms outside the central nervous system. In the last decade, the contribution of DJ-1 to the protection from ischemia-reperfusion injury has been recognized and its involvement in the pathophysiology of cardiovascular disease is attracting increasing attention. This review describes the current and gaps in our knowledge of DJ-1, focusing on its role in regulating cardiovascular function. In parallel, we present original data showing an association between increased DJ-1 expression and antiapoptotic and anti-inflammatory markers following cardiac and vascular surgical procedures. Future studies should address DJ-1’s role as a plausible novel therapeutic target for cardiovascular disease.

29 November 2023 in ASAIO Journal
Verified
Journal Article
Closed access
TCThemistokles Chamogeorgakis
Themistokles Chamogeorgakis
Ioannis ToumpoulisIoannis Toumpoulis
Ioannis Toumpoulis
MBMichael J. Bonios
Michael J. Bonios
DLDavid Lanfear
David Lanfear
CWCeleste Williams
Celeste Williams
JCJennifer Cowger
Jennifer Cowger
Right heart failure (RHF) management after left ventricular assist device (LVAD) implantation includes inotropes, right ventricular mechanical support, and heart transplantation. The purpose of this study is to compare different RHF treatment strategies in patients with a magnetically levitated centrifugal LVAD. A total of 6,632 Interagency Registry for Mechanically Assisted Circulatory Support (INTERMACS) patients from 2013 to 2020 were included. Of which, 769 (69.6%) patients (group 1) were supported with inotropes (≥14 days post-LVAD implantation), 233 (21.1%) patients (group 2) were supported with temporary right ventricular assist device (RVAD) that was implanted during LVAD implant, 77 (7.0%) patients (group 3) with durable centrifugal RVAD implanted during the LVAD implant, and 26 (2.4%) patients (group 4) were supported with RVAD (temporary or permanent), which was implanted at a later stage. Groups 1 and 4 had higher survival rates in comparison with group 2 (hazard ratio [HR] = 0.513, 95% confidence intervals [CIs] = 0.402–0.655, p < 0.001, versus group 1) and group 3 (HR = 0.461, 95% CIs = 0.320–0.666, p < 0.001, versus group 1). Patients in group 3 showed higher heart transplantation rates at 12 and 36 months as compared with group 1 (40.4% and 46.6% vs. 21.9% and 37.4%, respectively), group 2 (40.4% and 46.6% vs. 25.8% and 39.3%, respectively), and group 4 (40.4% and 46.6% vs. 3.8% and 12.0%, respectively). Severe RHF post-LVAD is associated with poor survival. Patients with LVAD who during the perioperative period are in need of right ventricular temporary or durable mechanical circulatory support constitute a group at particular risk. Improvement of devices tailored for right ventricular support is mandatory for further evolution of the field.

9 August 2006 in European Journal of Clinical Investigation
Verified
Journal Article
Closed access
PDF file
Ioannis ToumpoulisIoannis Toumpoulis
Ioannis Toumpoulis
CAC. E. Anagnostopoulos
C. E. Anagnostopoulos
JIJ. P. Ioannidis
J. P. Ioannidis
STS. K. Toumpoulis
S. K. Toumpoulis
TCT. Chamogeorgakis
T. Chamogeorgakis
JDJ. J. DeRose
J. J. DeRose