Ella Roelant

Ella Roelant
Universitair Ziekenhuis Antwerpen | UZA

About

82
Publications
13,184
Reads
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1,087
Citations
Citations since 2016
60 Research Items
920 Citations
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2016201720182019202020212022050100150200250
2016201720182019202020212022050100150200250
2016201720182019202020212022050100150200250
Additional affiliations
March 2013 - present
University of Antwerp
Position
  • Statistician

Publications

Publications (82)
Article
Full-text available
The biological variability of semen and sperm DNA fragmentation (SDF) parameters in a longitudinal intrauterine insemination (IUI) trial over multiple IUI cycles was investigated. A TUNEL assay was used for SDF testing, both before and after density gradient centrifugation. A significant age effect was observed: while semen parameters deteriorated...
Preprint
Full-text available
Background: Patients with cancer, especially haematological cancer, are at increased risk for breakthrough COVID-19 infection. However, so far, a predictive biomarker that can assess compromised vaccine-induced anti-SARS-CoV-2 immunity in cancer patients has not been proposed. Methods: Here, we employed machine learning approaches to identify a bio...
Article
Research question: What does the evolution of serum luteinizing hormone (LH) levels look like throughout the follicular phase of cycles in which gonadotrophins and gonadotropin-releasing hormone (GnRH) analogues in the context of ovarian stimulation for assisted reproduction technologies (ART) were used? Design: This was a retrospective, observatio...
Preprint
Full-text available
Background and importance Detection of sepsis in the emergency department (ED) should be done preferably during triage of the patients. The Manchester triage system (MTS) can be used to screen for sepsis. Objective To investigate the accuracy and validity of the MTS for detection of sepsis during triage in the ED and a combination of the MTS with a...
Presentation
Full-text available
title: Kris Peeters holds a PhD in Biology and is a Senior Clinical Embryologist with more than 30 years of experience in a university andrology and embryology laboratory, where he currently is the lab coordinator. His main research interests are sperm testing techniques and culture of ovarian preantral follicles.
Article
Study question Does variability in sperm DNA fragmentation (SDF) follow that observed in standard semen parameters and is this linked to outcome results? Summary answer Variability in SDF and in semen parameters is comparable but live birth rate tends to be lower in men with repetitive high SDF. What is known already Environmental, technical and...
Article
Study question What does the evolution of luteinizing hormone (LH) throughout the follicular phase look like in different treatment protocols for ovarian stimulation in IVF/ICSI? Summary answer Evolution of LH during the follicular phase of ovarian stimulation differs between Gonadotropin-Releasing Hormone (GnRH) analogues, with a significant decr...
Article
Objective: To perform a large-scale interchangeability study comparing 3D controlled aliasing in parallel imaging results in higher acceleration (CAIPIRINHA) sampling perfection with application optimized contrast using different flip angle evolutions (SPACE) TSE with standard 2D TSE for knee MRI. Methods: In this prospective study, 250 patients...
Article
Purpose We aimed to provide an extended analysis of the physiological handling of of the sodium burden induced by maintenance fluids. Materials and methods We revisited two studies that demonstrated, in healthy volunteers and in surgical patients, that maintenance fluids with 154 mmol/L of sodium lead to a more positive fluid balance than a regime...
Article
Full-text available
Introduction Currently cancer-related cognitive impairment (CRCI) is mainly assessed by means of questionnaires, which is very laborious for the patients and the supervising physician. We evaluated a new online cognitive assessment tool, the MyCognition Quotient (MyCQ, Cambridge) in breast cancer survivors with CRCI, and compared the results with a...
Article
Full-text available
Purpose Iatrogenic fluid overload is a potential side effect of intravenous fluid therapy in the hospital. Little attention has been paid to sodium administration as a separate cause of harm. With this narrative review, we aim to substantiate the hypothesis that a considerable amount of fluid-induced harm is caused not only by fluid volume, but als...
Article
Full-text available
Cytokines, chemokines, and (angiogenic) growth factors (CCGs) have been shown to play an intricate role in the progression of both solid and haematological malignancies. Recent studies have shown that SARS-CoV-2 infection leads to a worse outcome in cancer patients, especially in haematological malignancy patients. Here, we investigated how SARS-Co...
Article
Full-text available
Introduction Tubal patency testing is an essential part in the fertility workup of many subfertile women. Hysterosalpingography (HSG) has long been the test of choice in many clinics. There is evidence from a large randomised multicentre trial and from a recent meta-analysis that women who had HSG using oil soluble contrast medium (OSCM) had higher...
Preprint
Full-text available
Cytokines, chemokines and (angiogenic) growth factors (CCGs) have been shown to play an intricate role in the progression of both solid and haematological malignancies. Recent studies have shown that SARS-CoV-2 infection leads to worse outcome in cancer patients, especially in haematological malignancy patients. Here, we investigated how SARS-CoV-2...
Article
Full-text available
Background Cancer patients are at higher risk of developing severe COVID-19. However, safety and efficacy of COVID-19 vaccination in cancer patients undergoing treatment is unclear. Patients and Methods In this interventional prospective multi-cohort study, priming and booster doses of the BNT162b2 COVID-19 vaccine were administered 21 days apart...
Article
Full-text available
Despite the existing methods, a trend towards a later initiation and completion of toilet training has been seen in Western society. This study is the first to investigate prospectively the efficacy of intensive group toilet training in daycare centres. The primary outcome of interest is the duration until the child is toilet trained. A cluster ran...
Article
Full-text available
Introduction: Acute kidney injury (AKI) is a frequent complication among patients in the intensive care unit (ICU). The limitations of serum Cr (sCr) in timely detecting AKI are well known. Beta-trace protein (BTP) is emerging as a novel endogenous glomerular filtration rate marker. The aim of this study was to explore the role of BTP as a marker...
Preprint
Full-text available
Background: The SARS-CoV-2 pandemic has a far-reaching impact on healthcare. Cancer patients in particular were regarded as vulnerable and oncology departments drastically modified their Care systems and established new priorities. We evaluated the impact of SARS-CoV-2 on the activity of a single cancer center; and we studied patients’ perspectives...
Article
Full-text available
Telehealth modalities were introduced during the SARS-CoV-2 pandemic to assure continuation of cancer care and maintain social distance. This is a retrospective cohort analysis of our telehealth expansion programme. We adapted two existing patient-reported outcome (PRO) telemonitoring tools that register and (self-)manage toxicities to therapy, whi...
Article
Full-text available
Background Coronavirus disease (COVID-19) is interfering heavily with the screening, diagnosis and treatment of cancer patients. Better knowledge of the seroprevalence and immune response after Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) infection in this population is important to manage them safely during the pandemic. Methods 9...
Article
Full-text available
Purpose Does IDEF mapping help monitor the technical process of IUI and explore the potential improvements which might contribute to increased pregnancy and live birth rates? Method Retrospective analysis of 1729 homologous IUI cycles of couples attending a fertility clinic in a university hospital setting. Standardized conventional semen paramete...
Article
PurposeThe aim of this study is to investigate clinical and magnetic resonance imaging (MRI) outcomes after anterior cruciate ligament (ACL) repair using the suture tape augmentation (STA) technique.Methods This prospective interventional case series included 35 patients who underwent STA ACL repair and were all followed up for 2 years. The ACL rup...
Article
Full-text available
Background: The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic has overwhelmed the capacity of healthcare systems worldwide. Cancer patients, in particular, are vulnerable and oncology departments drastically needed to modify their care systems and established new priorities. We evaluated the impact of SARS-CoV-2 on the acti...
Article
Full-text available
Objective: The Montreal Cognitive Assessment (MoCA) is a sensitive and clinically practical test but its usefulness in measuring long-term cognitive effects of ECT is unclear. Using the MoCA, we investigated short- and long-term global cognitive change in ECT-treated patients with a Major Depressive Episode (MDE). Methods: We included 65 consecu...
Article
Objective To longitudinally monitor remodeling of human autograft following anterior cruciate ligament (ACL) reconstruction with DTI.Methods Twenty-eight patients underwent DTI follow-up at 3, 8, and 14 months after clinically successful ACL reconstruction with tendon autograft. Among these, 18 patients had a concomitant lateral extra-articular pro...
Article
Objective To longitudinally monitor remodeling of human autograft following anterior cruciate ligament (ACL) reconstruction with DTI. Methods Twenty-eight patients underwent DTI follow-up at 3, 8, and 14 months after clinically successful ACL reconstruction with tendon autograft. Among these, 18 patients had a concomitant lateral extra-articular p...
Article
Full-text available
Introduction We investigated whether a web-based cognitive training video game is an effective approach to improve cognitive decline in combination with our standard of care for rehabilitation of breast cancer (BC) patients. Materials and methods Self-selected BC patients between 18 and 71 years old complaining of disturbing cognitive impairment w...
Article
Objectives: The purpose of this study was to assess the technical feasibility of 3-dimensional (3D) super-resolution reconstruction (SRR) of 2D turbo spin echo (TSE) knee magnetic resonance imaging (MRI) and to compare its image quality with conventional 3D TSE sampling perfection with application optimized contrast using different flip angle evol...
Article
Full-text available
Objective: It is recommended that cancer survivors incorporate physical activity into their daily lives after in-hospital rehabilitation. However, there is a lack of training programmes focusing on the specific needs of cancer survivors. TriaGO! - an 8-month intervention study of aerobic endurance training for cancer survivors - was therefore exam...
Article
Full-text available
Background: The current gold standard for the treatment of an anterior cruciate ligament (ACL) rupture is reconstruction with tendon graft. Recently, two surgical ACL repair techniques have been developed for treating an acute ACL rupture: Dynamic Intraligamentary Stabilization (DIS, Ligamys®) and Internal Brace Ligament Augmentation (IBLA, Intern...
Article
Full-text available
Pterygium is a common eye disease, linked to an increased exposure to UV radiation and dry environments. The associated pathology culminates in visual impairment and, in some rare cases, blindness. However, there remains a lot of uncertainty concerning the pathogenesis of this fibrovascular lesion. As the composition of the tear film provides a ref...
Article
Full-text available
Purpose To determine the effects of the sodium content of maintenance fluid therapy on cumulative fluid balance and electrolyte disorders. Methods We performed a randomized controlled trial of adults undergoing major thoracic surgery, randomly assigned (1:1) to receive maintenance fluids containing 154 mmol/L (Na154) or 54 mmol/L (Na54) of sodium...
Article
There is a growing body of literature that recognizes the importance of sperm DNA fragmentation as a candidate test for the assessment of sperm function and thus male reproductive potential. Research on the subject has mostly been focused on couples undergoing IVF/ICSI treatment whilst much uncertainty still exists about the relationship between sp...
Article
Full-text available
Background: Spine surgery is associated with considerable postoperative pain and can be challenging to treat. A loco-regional technique suitable for spine surgery should cover the dorsal root of the spinal nerves at the levels where surgery is performed. The erector spinae block is a loco-regional technique with promising results and was recently...
Article
Full-text available
Purpose TUNEL assay is the most common, direct test for sperm chromatin integrity assessment. But, lack of standardized protocols makes interlaboratory comparisons impossible. Consequently, clinical thresholds to predict the chance of a clinical pregnancy also vary with the technique adopted. This prospective study was undertaken to assess the inci...
Preprint
Background: Spine surgery is associated with considerable postoperative pain and can be challenging to treat. A loco-regional technique suitable for spine surgery should cover the dorsal root of the spinal nerves at the levels where surgery is performed. The erector spinae block is a loco-regional technique with promising results that was recently...
Preprint
Background: Spine surgery is associated with considerable postoperative pain and can be challenging to treat. A loco-regional technique suitable for spine surgery should cover the dorsal root of the spinal nerves at the levels where surgery is performed. The erector spinae block is a loco-regional technique with promising results that was recently...
Preprint
Background: Spine surgery is associated with considerable postoperative pain and can be challenging to treat. A loco-regional technique suitable for spine surgery should cover the dorsal root of the spinal nerves at the levels where surgery is performed. The erector spinae block is a loco-regional technique with promising results that was recently...
Article
Full-text available
Management of fever in prolonged profound neutropenia remains challenging with many possible infectious and non-infectious causes. We investigated whether procalcitonin (PCT) is superior to C-reactive protein (CRP) in discriminating between different etiologies of fever in this setting. CRP and PCT were tested daily during 93 neutropenic episodes...
Article
Purpose: To assess anterolateral complex (ALC) injuries in patients with acute anterior cruciate ligament (ACL) rupture on magnetic resonance imaging (MRI). Methods: Patients with acute ACL rupture who underwent ACL surgery between 2015 and 2017 and underwent MRI within 6 weeks of the initial trauma were included. Two radiologists assessed magne...
Article
Full-text available
Objectives: Overwhelming clinical evidence exists on disturbed vascular and endothelial function in the pathophysiology of preeclampsia (PE). In a non-pregnant (NP) population, L-FMC (low-flow mediated constriction) provides insight in the 'resting' endothelial capacity in contrast to the gold standard of flow mediated dilatation (FMD), reflecting...
Article
Purpose The treatment of acute anterior cruciate ligament (ACL) ruptures with a repair technique has recently regained interest. A novel ACL repair technique was described using Independent Suture Tape Reinforcement with 2-year follow-up results. Methods Forty-two consecutive patients with an acute ACL rupture undergoing repair using this techniqu...
Article
Aim: Deterioration of hospitalised patients is often missed, misinterpreted, and mismanaged. Rapid Response Systems (RRSs) have been proposed to solve this problem. This study aimed to investigate the effect of an RRS on the incidence of unexpected death, cardiac arrest with cardiopulmonary resuscitation (CPR), and unplanned intensive care unit (I...
Article
Full-text available
PurposeResearch on intravenous fluid therapy and its side effects, volume, sodium, and chloride overload, has focused almost exclusively on the resuscitation setting. We aimed to quantify all fluid sources in the ICU and assess fluid creep, the hidden and unintentional volume administered as a vehicle for medication or electrolytes. Methods We prec...
Article
Full-text available
Background. Daily and globally, millions of adult hospitalized patients are exposed to maintenance i.v. fluid solutions supported by limited scientific evidence. In particular, it remains unclear whether fluid tonicity contributes to the recently established detrimental effects of fluid, sodium, and chloride overload. Methods. This crossover study...
Article
Full-text available
Objectives: Ischaemia-reperfusion injury is a necessary part of organ transplantation and a key determinant of both acute and chronic graft failure. We have assessed the contribution of endothelial nitric oxide synthase (eNOS) and eNOS uncoupling to oxidative and nitrosative stress formation during lung ischaemia-reperfusion injury dependent on is...
Conference Paper
Full-text available
During the last years, evidence has arisen for the ability of crustaceans to suffer from stress and noxious situations. This has led to an increasing public concern for crustacean welfare. Due to the interest in intensification of crayfish aquaculture, the question arises whether artificial culture conditions may impact these crustaceans' welfare....
Conference Paper
Full-text available
There is an increasing interest for the intensive production of noble crayfish in Europe. Unfortunately, these decapods are highly cannibalistic, hindering the development of commercially viable intensive production (Abeel et al, 2014). In recent years, progress has been made regarding the optimization of noble crayfish culture in RAS. However, inf...
Poster
Full-text available
Artificial day-night cycles are known to affect crayfish growth, behaviour and physiological stress levels in aquaculture. Based on the protocol by Fossat et al. (2015), who validated decreased exploratory behaviour and raised photophobia as stress-induced anxiety-like behaviours in Procambarus clarkii, we evaluated the effect of different photoper...
Article
Full-text available
Background The pharmacotherapeutic management of agitation is a common clinical challenge. Pharmacotherapy is frequently used, the use of published guidelines is not known. The purpose of this study was twofold; to describe the prescribing patterns of psychiatrists and emergency physicians and to evaluate to which extent guidelines are used. Metho...
Article
The objective of this study was to evaluate a new way for applying bed baths and reducing the risk for dry skin by comparing the effect of two washing methods on skin hydration. A cluster randomized trial was conducted. Skin hydration was measured before and after implementation of disposable wash gloves, using a MoistureMeter SC at three skin site...
Article
Although MRI is the gold standard for the diagnosis and monitoring of multiple sclerosis (MS), current conventional MRI techniques often fail to detect cortical alterations and provide little information about gliosis, axonal damage and myelin status of lesioned areas. Diffusion tensor imaging (DTI) and diffusion kurtosis imaging (DKI) provide sens...