Publications by authors named "Schelzig H"

Introduction: Despite the widespread use of branched (bEVAR) and fenestrated endovascular aortic repair (fEVAR) for complex aortic pathologies, there are no reliable recommendations regarding postsurgery antiplatelet therapy. We therefore evaluated the outcome of single (SAPT) and dual antiplatelet therapy (DAPT) following fEVAR and bEVAR.

Methods: A total of 63 patients from two German centers treated for complex aortic pathologies were included in this retrospective study.

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Patient-specific diagnostic and therapeutic approaches are important in the care of people with chronic wounds. The heterogeneity of underlying disease profiles and the diversity of the wound micro-environment make generalized approaches difficult. While high-throughput molecular diagnostic methods are increasingly widespread and available, the analysis of objective biomolecular disease patterns has not found its way into everyday wound management.

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Introduction: Visceral artery aneurysms (VAAs) are rare but have a high mortality rate in cases of rupture, especially for pancreaticoduodenal artery aneurysms (PDAAs). A hybrid approach is presented for a challenging case with inferior PDAA (iPDAA) with concomitant coeliac artery (CA) occlusion and a variant arterial supply to the liver.

Report: A 61 year old patient complained of postprandial pain associated with elevated liver enzymes and impaired hepatic synthesis capacity.

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Article Synopsis
  • Platelets, through their glycoprotein VI (GP VI) receptor, significantly influence the development and progression of abdominal aortic aneurysm (AAA), a dangerous cardiovascular disease.
  • In experimental studies with mice, the deletion of GP VI resulted in less aortic expansion and reduced inflammation, showing that it plays a crucial role in AAA pathology.
  • The findings suggest that GP VI could serve as a potential biomarker for early detection of AAA in patients, as well as a target for future therapeutic interventions.
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: There are several endovascular treatment options to treat aortic arch and thoracic aortic pathologies with custom-made or surgeon-modified aortic stent grafts. This study seeks to assess endovascular treatment methods for aortic arch and thoracic aortic pathologies with no acceptable proximal landing zone for standard thoracic endovascular aortic repair (TEVAR), comparing different treatment methods and evaluating technical success, intraoperative parameters and short-term outcomes. : All patients undergoing elective or emergency endovascular treatment of aortic arch and thoracic aortic pathologies, with no acceptable landing zone for standard TEVAR, between 1 January 2010 and 31 March 2024, at the University Hospital Düsseldorf, Germany were included.

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Background: Several studies have reported short- and intermediate-term outcomes after thoracic endovascular aortic repair (TEVAR) for descending thoracic aortic aneurysm (DTAA); however, reports on long-term (10 years) outcomes are sparse. Therefore, the aim of this study was to analyze predictors impacting long-term outcome after TEVAR for DTAA.

Methods: Databases from four academic institutions were reviewed and consecutive cases of TEVAR for DTAA between 1999 and 2021 were included in this retrospective multicenter study (case series).

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  • The report investigates the safety and effectiveness of 3D-printed aortic models in aortic surgery, especially regarding their sterilization and modification for creating personalized endoprostheses.
  • Five identical models were made using patient data, with two sterilized, two disinfected, and one untreated to evaluate any changes from these processes.
  • The findings showed no significant structural alterations in the models post-treatment, and both sterilized and disinfected models were free of pathogens, supporting their potential clinical use.
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  • - The study compared outcomes of thoracic endovascular aortic repair (TEVAR) procedures between two settings: standard operating rooms (SOR) and hybrid operating rooms (HOR) at a hospital in Germany, analyzing data from 93 patients over seven years.
  • - Results showed that patients in the SOR had significantly lower radiation exposure and fluoroscopy times, but required higher volumes of contrast agent compared to those in the HOR.
  • - The findings suggest that while the HOR leads to increased radiation and longer procedure times, it may be preferable for certain patients due to its lower volume of contrast use, especially in older patients with conditions like chronic kidney disease (CKD).
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  • The ZEPHYR registry evaluated the midterm outcomes of the low profile Zenith Alpha abdominal endovascular graft for treating non-ruptured abdominal aortic aneurysms in 347 patients across multiple European sites.
  • The study found that treatment success rates were high at 6 months (92.5%), 1 year (90.4%), and 2 years (85.3%), with the main complications being related to limb issues.
  • The researchers could not determine any specific factors that independently predicted limb complications, indicating a need for further investigation into these issues.
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An intraluminal, non-occlusive thrombus (ILT) is a common feature in an abdominal aortic aneurysm (AAA). This study investigated the relative progression of ILT vs. AAA volume using a novel parameter, the so-called thrombus burden ratio (TBR), in non-treated AAAs.

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Background: The endothelial cell layer is essential for the maintenance of various blood vessel functions. Major risk factors for endothelial dysfunction that contribute to aortic pathologies such as abdominal aortic aneurysm (AAA) and aortic dissection (AD) include smoking tobacco cigarettes and hypertension. This study explores the effects of nicotine (Nic) and angiotensin II (Ang II) on human aortic endothelial cells (HAoECs) at a transcriptional level.

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Article Synopsis
  • The study focuses on the treatment and outcomes of popliteal artery aneurysms (PAAs) in women, who make up only 5% of PAA patients, highlighting the lack of extensive evidence in this area.
  • Data was collected from the POPART Registry, a large European registry involving 42 centers, examining clinical presentation and surgical outcomes since 2010.
  • Findings revealed that female patients had smaller aneurysms and higher rates of symptoms before surgery, along with increased complications like impaired wound healing and the need for additional procedures post-surgery compared to men.
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Objective: Ruptured abdominal aortic aneurysm (rAAA) is a critical condition with a high mortality rate. Over the years, endovascular aortic repair (EVAR) has evolved as a viable treatment option in addition to open repair (OR). The primary objective of this study was to compare the safety and efficacy of EVAR and OR for the treatment of rAAA based on a comprehensive analysis of our single-centre 30-year experience.

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Aims: Abdominal aortic aneurysm (AAA) is a highly lethal disease with progressive dilatation of the abdominal aorta accompanied by degradation and remodelling of the vessel wall due to chronic inflammation. Platelets play an important role in cardiovascular diseases, but their role in AAA is poorly understood.

Methods And Results: The present study revealed that platelets play a crucial role in promoting AAA through modulation of inflammation and degradation of the extracellular matrix (ECM).

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Objective: The incidence of type B aortic dissection (TBAD) is increasing worldwide; however, the underlying pathomechanisms are not conclusively understood. This study explores the geometric architecture of the aortic arch and supra-aortic branches in TBAD patients as opposed to non-TBAD patients.

Methods: Patient characteristics were retrieved from archived medical records.

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Article Synopsis
  • Acute aortic dissection (AAD) is a serious health issue that can happen if the inner lining of a large blood vessel tears, and factors like high blood pressure and smoking make it more likely.
  • Researchers studied how nicotine, a chemical in cigarettes, angiotensin II (a substance that can raise blood pressure), and alcohol affect heart cells by testing these substances in different amounts and observing changes in cell behavior.
  • They found that alcohol and angiotensin II made cells less healthy and changed how well they stuck together and moved, suggesting that these substances might make it easier for an important blood vessel to get damaged.
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Objective: Endovascular aortic repair (EVAR) for elective and emergency infrarenal aortic pathologies is the primary approach for treatment nowadays. During such procedure, the suture-mediated closure device (SMCD) (Perclose ProGlide, Abbott Laboratories, Chicago, IL, USA) is commonly used. This study aimed to identify potential contributors for SMCD failure in a patient cohort of elective and emergency EVAR.

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Gelatin-based hemostats have been used in various surgical fields and showed advantageous effects on central aspects of wound healing when compared to cellulose-based hemostats. Nevertheless, the influence of gelatin-based hemostats on wound healing has not been fully explored yet. Hemostats were applied to fibroblast cell cultures for 5, 30, 60 min, 24 h, 7 and 14 days and measurements were taken at 3, 6, 12, 24 h and 7 or 14 days, respectively.

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  • The study analyzes the effect of German health insurance coverage for pre-exposure prophylaxis (PrEP) on the frequency and reasons for seeking post-exposure prophylaxis (PEP) counseling in a university emergency department before and after its implementation.
  • A total of 309 ED presentations for PEP counseling were examined over two 18-month periods, revealing no significant changes in the reasons for visits, including sexual and occupational risk contacts.
  • Despite the lack of change in presentation reasons, all individuals who initiated PEP and followed up with HIV testing three months later were HIV negative, highlighting the ongoing importance of PEP and the potential for improving awareness of PrEP among at-risk individuals.
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  • * Pannexin-1 (Panx1) channels play a critical role in inflammation and were found to influence AAA formation through effects on endothelial cells and platelets, particularly after platelet activation.
  • * Research showed that while Panx1 levels were higher in AAA patients and animal models, targeting Panx1 in platelets didn't significantly alter aortic remodeling or diameter changes, indicating that inflammation modulation alone isn't enough to impact AAA progression.
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Background: Vascular surgery of the inguinal area can be complicated by persistent lymphatic fistulas. Rapid and effective treatment is essential to prevent infection, sepsis, bleeding, and possible leg amputation. Current data on irradiation of lymphatic fistulas lack recommendation on the appropriate individual and total dose, the time of irradiation, and the target volume.

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  • - This study evaluated the 3-year outcomes of the NEXUS® Aortic Arch Stent Graft System in high-risk patients undergoing endovascular aortic arch stent grafting, focusing on overall survival and complications.
  • - A total of 28 patients were analyzed, with 1- and 3-year survival rates of 89% and 71%, and a low incidence of serious complications like stroke or paraplegia reported during follow-ups.
  • - The findings suggest that the Nexus system shows promising results in terms of safety and effectiveness for aortic arch interventions in high-risk patients over a three-year period.
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Aims: Abdominal aortic aneurysm (AAA) is a common cardiovascular disease with a strong correlation to smoking, although underlying mechanisms have been minimally explored. Electronic cigarettes (e-cigs) have gained recent broad popularity and can deliver nicotine at comparable levels to tobacco cigarettes, but effects on AAA development are unknown.

Methods And Results: We evaluated the impact of daily e-cig vaping with nicotine on AAA using two complementary murine models and found that exposure enhanced aneurysm development in both models and genders.

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Background: The presentation of peptides and the subsequent immune response depend on the MHC characteristics and influence the specificity of the immune response. Several studies have found an association between HLA variants and differential COVID-19 outcomes and have shown that HLA genotypes are associated with differential immune responses against SARS-CoV-2, particularly in severely ill patients. Information, whether HLA haplotypes are associated with the severity or length of the disease in moderately diseased individuals is absent.

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