Dafni Charisopoulou

Dr. Dafni Charisopoulou

orcid

Research Focus & Metrics

Academic Career Length

15Years (2012-Present)

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

Representative Publications

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1 September 2013 in International Journal of Cardiology
Verified
Journal Article
Closed access
GKG. Koulaouzidis
G. Koulaouzidis
RNR. Nicoll
R. Nicoll
DCDafni Charisopoulou
Dafni Charisopoulou
TMT. McArthur
T. McArthur
PJP.J. Jenkins
P.J. Jenkins
MHM.Y. Henein
M.Y. Henein

13 April 2018 in European Heart Journal - Cardiovascular Imaging
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Journal Article
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DCDafni Charisopoulou
Dafni Charisopoulou
NBNicholas R Banner
Nicholas R Banner
CDCamil Demetrescu
Camil Demetrescu
ASAndre R Simon
Andre R Simon
SHShelley Rahman Haley
Shelley Rahman Haley
The need for right ventricular assist device (RVAD) support after left ventricular assist device (LVAD) therapy is associated with increased morbidity and mortality. We used 2D echocardiographic strain analysis to assess right atrial (RA) and right ventricular (RV) mechanics and predict the need for RV mechanical support after LVAD implantation. Seventy advanced chronic heart failure (ACHF) patients [59 male, age 47 ± 12 years, 79% dilated cardiomyopathy, left ventricular ejection fraction 23 ± 10%] received continuous-flow LVAD as a bridge to transplantation over an 18 month period. A retrospective analysis of RV and RA strain and right heart dyssynchrony was performed comparing those requiring RVAD (20%, n = 14) with those who did not (non-RVAD 80%, n = 56). One-year survival was significantly lower in the RVAD group (50% vs. 79%; P < 0.03). Independent predictors of RVAD support were: low peak RA longitudinal strain (RALS) [odds ratio (OR) 2.5, 95% confidence interval (95% CI) 1.37–2.0; P = 0.03], low RV free-wall longitudinal strain (RVFWLS) (OR 1.3, 95% CI 1.03–2.3; P = 0.04), and degree of intra-RV dyssynchrony (DRVFW-IVS, OR 1.3, 95% CI 1.02–1.3; P = 0.04). In LVAD recipients needing RVAD support, there was lower RALS and RVFWLS in addition to greater RV free-wall mechanical delay. We conclude that RA and RV strain and dyssynchrony analysis have the potential to add incremental value to the pre-VAD-implantation assessment made using conventional echo measurements.

Verified
Journal Article
Open access
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GKGeorge Koulaouzidis
George Koulaouzidis
DCDafni Charisopoulou
Dafni Charisopoulou
PBPiotr Bomba
Piotr Bomba
JSJaroslaw Stachura
Jaroslaw Stachura
PGPawel M. Gasior
Pawel M. Gasior
TJTomasz Jadczyk
Tomasz Jadczyk
Robots are defined as programmable machines that can perform specified tasks. Medical robots are emerging solutions in the field of cardiology leveraging recent technological innovations of control systems, sensors, actuators, and imaging modalities. Robotic platforms are successfully applied for percutaneous coronary intervention, invasive cardiac electrophysiology procedures as well as surgical operations including minimally invasive aortic and mitral valve repair, coronary artery bypass procedures, and structural heart diseases. Furthermore, machines are used as staff-assisting tools to support nurses with repetitive clinical duties i.e., food delivery. High precision and resolution allow for excellent maneuverability, enabling the performance of medical procedures in challenging anatomies that are difficult or impossible using conventional approaches. Moreover, robot-assisted techniques protect operators from occupational hazards, reducing exposure to ionizing radiation, and limiting risk of orthopedic injuries. Novel automatic systems provide advantages for patients, ensuring device stability with optimized utilization of fluoroscopy. The acceptance of robotic technology among healthcare providers as well as patients paves the way for widespread clinical application in the field of cardiovascular medicine. However, incorporation of robotic systems is associated with some disadvantages including high costs of installation and expensive disposable instrumentations, the need for large operating room space, and the necessity of dedicated training for operators due to the challenging learning curve of robotic-assisted interventional systems.

11 September 2012 in Angiology
Verified
Journal Article
Closed access
GKGeorge Koulaouzidis
George Koulaouzidis
DCDafni Charisopoulou
Dafni Charisopoulou
SMS. Maffrett
S. Maffrett
MTM. Tighe
M. Tighe
PJP. J. Jenkins
P. J. Jenkins
TMT. McArthur
T. McArthur
The aim of this study is to determine the progression of coronary artery calcification (CAC) using electron beam computed tomography (CT) when the initial CAC score (CACS) is zero and to determine the best interval to repeat a CAC scan. We studied 388 individuals with zero CACS (308 males; mean age: 48.8 ± 8.26 years) who underwent 2 consecutive CT scans in a period of at least 12 months apart. The interscan period was 2.99 ± 1.35 years (range: 1-6 years). Three-quarters of the individuals (75%) did not develop any CAC progression, 20.87% presented CAC progression of 1 to 10, 3.6% had 11 to 50, whereas only 0.51% had >50. The average time of new CAC development was 4.2 ± 1.1 years. Individuals with CAC progression presented higher incidence of hypertension, diabetes mellitus, hypercholesterolaemia and higer frequency of male gender than those with without CAC changes (p<0.02). No cardiac events occurred during the follow-up period.

16 March 2020 in Cardiology in the Young
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Journal Article
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DCDafni Charisopoulou
Dafni Charisopoulou
RBRoberta Margarita Bini
Roberta Margarita Bini
GRGillian Riley
Gillian Riley
KJKalai Janagarajan
Kalai Janagarajan
SMShahin Moledina
Shahin Moledina
JMJan Marek
Jan Marek
Introduction: Infants with isolated atrial septal defects are usually minimally symptomatic, and repair is typically performed after infancy. Early repair may be considered if there is high pulmonary blood flow and reduced respiratory reserve or early signs of pulmonary hypertension. Our aim was to review the characteristics and outcomes of a cohort of patients who underwent infant repair at our institute.Methods: The study included 56 infants (28 female, 19 trisomy 21) with isolated atrial septal defect (age: 8 months (1.5–12), weight: 6 kg (2.8–7.5), echo Qp/Qs: 1.9 ± 0.1) who underwent surgical closure (20 fenestrated). Three groups were identified: 1) chronic lung disease and pulmonary hypertension (group A: n = 28%); 2) acutely unwell infants with pulmonary hypertension but no chronic lung disease (group B: n = 20, 36%); and 3) infants with refractory congestive heart failure without either pulmonary hypertension or chronic lung disease (group C: n = 9, 16%).Results: Post-operatively, pulmonary hypertension infants (47/56) showed improvement in tricuspid annular plane systolic excursion z-score (p < 0.001) and right ventricular systolic/diastolic duration ratio (p < 0.05). All ventilator (14.3%) or oxygen-dependent (31.6%) infants could be weaned within 2 weeks after repair. One year later, weight z-score increased in all patients and by +1 in group A, +1.3 in group B and +2 in group C. Over a median follow-up of 1.4 years, three patients died, four patients continued to have pulmonary hypertension evidence and two remained on targeted pulmonary hypertension therapy.Conclusion: Atrial septal defect repair within the first year may improve the clinical status and growth in infants with early signs of pulmonary hypertension or those requiring respiratory support and facilitate respiratory management.

19 August 2025 in Diagnostics
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Journal Article
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NANikolaos Antoniou
Nikolaos Antoniou
SISotiria Iliopoulou
Sotiria Iliopoulou
DRDimitrios G Raptis
Dimitrios G Raptis
OGOrestis Grammenos
Orestis Grammenos
MKMaria Kalaitzoglou
Maria Kalaitzoglou
GKGeorge Koulaouzidis
George Koulaouzidis
Background: The integration of global longitudinal strain (GLS) with stress echocardiography (SE) represents a significant advancement in non-invasive cardiac diagnostics, particularly in the evaluation of coronary artery disease (CAD). GLS, derived from speckle-tracking echocardiography, quantifies myocardial deformation and offers superior sensitivity for detecting subclinical myocardial dysfunction compared to conventional metrics like wall motion and ejection fraction. Recent studies have validated the prognostic and diagnostic efficacy of GLS both at rest and during stress, notably enhancing the detection of obstructive and non-obstructive CAD, microvascular dysfunction, and other cardiac pathologies. Methods: This manuscript synthesizes extensive clinical data demonstrating the added value of GLS during stress echocardiography across diverse cardiac conditions—including valvular heart disease, heart failure, cardio-oncology, and pediatric cardiology. Novel metrics like longitudinal strain reserve (LSR), myocardial work indices, and post-systolic strain have further enriched risk stratification strategies. Results: The combination of GLS with SE has been shown to approximate the accuracy of invasive coronary angiography in intermediate-risk patients and in cases with equivocal traditional SE findings. Despite its clinical promise, the utility of GLS is challenged by technical limitations, including image quality dependency, inter-vendor variability, and limited applicability during high heart rate states. Conclusions: As technological refinement and standardization progress, GLS integrated with SE is poised to become a mainstay in precision cardiology, improving diagnostic yield, guiding therapeutic decisions, and enhancing patient outcomes.