Publications by authors named "Kuehnl A"

Article Synopsis
  • * Results indicated that the risk of stroke or death was higher for CAS (3.7%) compared to CEA (2.3%), with age being a significant factor increasing risk, especially for CAS patients.
  • * The findings suggest that older patients, those with right-sided stenosis, and symptomatic patients treated within 2 days of the index event may fare worse with CAS, while CAS is comparable to CEA for patients with contralateral occlusion
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The aim of this study was to analyze the association between center quality certifications and patients' characteristics, clinical management, and outcomes after carotid revascularization. This study is a pre-planned sub-study of the ISAR-IQ project, which analyzes data from the Bavarian subset of the nationwide German statutory quality assurance carotid database. Hospitals were classified as to whether a certified vascular center (cVC) or a certified stroke unit (cSU) was present on-site or not.

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The German-Austrian guideline on the treatment of carotid stenosis recommends specialist neurological assessment (NA) before and after carotid endarterectomy (CEA) or carotid artery stenting (CAS). This study analyzes the determinants of NA and the association of NA with the perioperative rate of stroke or death. This study is a pre-planned sub-study of the ISAR-IQ project, which analyzes data from the nationwide German statutory quality assurance carotid database.

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Objective: To investigate associations between individual embolic protection device (EPD) use and respective center policy with periprocedural outcomes after carotid artery stenting (CAS).

Methods: This analysis is based on the nationwide German statutory quality assurance database and was funded by Germany's Federal Joint Committee Innovation Fund (G-BA Innovationsfonds, 01VSF19016 ISAR-IQ). According to their policy towards EPD use, hospitals were categorized as (>90%), (10-90%), or (<10%) .

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Background: This study analyses the association between hospital ownership and patient selection, treatment, and outcome of carotid endarterectomy (CEA) or carotid artery stenting (CAS).

Methods: The analysis is based on the Bavarian subset of the nationwide German statutory quality assurance database. All patients receiving CEA or CAS for carotid artery stenosis between 2014 and 2018 were included.

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Objective: This study aimed at assessing outcomes after carotid endarterectomy (CEA) in dependence of center policy with respect to imaging intraoperative completion study (ICS i ) usage.

Summary Background Data: Although randomized controlled studies are missing, a beneficial effect was shown for ICS i techniques (i.e.

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Acute lower limb ischemia (ALI) is a common vascular emergency, requiring urgent revascularization by open or endovascular means. The aim of this retrospective study was to evaluate patient demographics, treatment and periprocedural variables affecting the outcome in ALI patients in a consecutive cohort in a tertiary referral center. Primary outcome events (POE) were 30-day (safety) and 180-day (efficacy) combined mortality and major amputation rates, respectively.

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Objective: Abdominal aortic aneurysm rupture (rAAA) is still associated with high mortality. Recent studies have shown higher incidences in autumn and winter, and worse outcomes after rAAA treatment on weekends in some countries. This study aimed to analyse seasonal, weekday, and daytime fluctuations of the hospital incidence, treatment modalities, and outcomes of rAAA, based on the most recent nationwide German real world data.

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Objective: The external validity of randomised controlled trials (RCTs) and their transferability to clinical practice is under investigated. This study aimed to analyse the exclusion criteria of recent carotid RCTs comparing carotid endarterectomy (CEA) and carotid artery stenting, and to assess the eligibility of consecutive clinical practice cohorts to those RCTs.

Methods: An analysis of the clinical and anatomical exclusion criteria of RCTs for asymptomatic (SPACE-2, ACST-2, CREST-1, and CREST-2) and symptomatic carotid stenosis (SPACE-1, CREST-1, ICSS, and EVA-3S) was performed.

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Article Synopsis
  • The study analyzed hospital incidence and mortality rates for patients in Switzerland treated for abdominal aortic aneurysms from 2009 to 2018.
  • Out of 10,728 cases, a significant majority (87.1%) were male, with 22.7% experiencing ruptured aneurysms; treatment outcomes showed improved mortality rates for nonruptured cases over the years, but high mortality for ruptured cases persisted.
  • Overall, incidence rates remained stable throughout the observed decade, highlighting ongoing challenges in managing ruptured abdominal aortic aneurysms in comparison to other countries like Germany.
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Background: Peripheral arterial disease (PAD) and acute limb ischemia (ALI) pose an increasing strain on health care systems. The objective of this study was to describe the German health care landscape and to assess hospital utilization with respect to PAD and ALI.

Methods: Secondary data analysis of diagnosis-related group statistics data (2009-2018) provided by the German Federal Statistical Office.

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Introduction: In Germany, the regional settlement structure is heterogenous, ranging from densely populated cities with a tight network of vascular health care to large regions in which access to health care is limited in terms of space and time. Therefore, the aim of this secondary data analysis was to investigate the association between the settlement structure of the patient's home district (KT), and the hospital incidence, type of therapy, and mortality of non-ruptured abdominal aortic aneurysms (nrAAA).

Methods: The microdata of the DRG statistics of the Federal Statistical Office for the years 2005-2014 were evaluated.

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Objective: This is a description of the German healthcare landscape regarding carotid artery disease, assessment of hospital incidence time courses for carotid endarterectomy (CEA) and carotid artery stenting (CAS), and simulation of potential effects of minimum hospital caseload requirements for CEA and CAS.

Methods: The study is a secondary data analysis of diagnosis related group statistics data (2005-2016), provided by the German Federal Statistical Office. Cases encoded by German operation procedure codes for CEA or CAS and by International Classification of Diseases (ICD-10) codes for carotid artery disease were included.

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Yin Yang 1 (YY1) is a ubiquitous transcription factor and mammalian Polycomb Group protein (PcG) with important functions for regulating lymphocyte development and stem cell self-renewal. YY1 mediates stable PcG-dependent transcriptional repression via recruitment of PcG proteins that result in histone modifications. Many questions remain unanswered regarding how cell- and tissue-specificity is achieved by PcG proteins.

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Background Trials and registries associated female sex and high age with unfavorable outcomes in abdominal aortic aneurysm treatment. Many studies showed an inverse correlation between annual hospital volume and in-hospital mortality. The volume-outcome relationship has not been investigated separately for women and men or across the age range.

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: Abdominal aortic aneurysms (AAA) can be treated by either open surgery (OAR) or endovascular aortic repair (EVAR). The aim of this study was to analyze regional variations in application of (EVAR) and in-hospital mortality after intact AAA (iAAA) repair. : Using data provided by the German Federal Statistical Office, a nationwide analysis for 2012 to 2014 was conducted.

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Background and Purpose- This analysis was performed to assess the association between perioperative and clinical variables and the 30-day risk of stroke or death after carotid endarterectomy for symptomatic carotid stenosis. Methods- Individual patient-level data from the 5 largest randomized controlled carotid trials were pooled in the Carotid Stenosis Trialists' Collaboration database. A total of 4181 patients who received carotid endarterectomy for symptomatic stenosis per protocol were included.

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Background: Many workers suffer from work-related stress and are at increased risk of work-related cardiovascular, musculoskeletal, or mental disorders. In the European Union the prevalence of work-related stress was estimated at about 22%. There is consensus that stress, absenteeism, and well-being of employees can be influenced by leadership behaviour.

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Objective: We sought to analyze the association between last neurologic event and the risk of stroke or death among patients treated with carotid endarterectomy (CEA) or carotid artery stenting (CAS) under routine conditions in Germany.

Methods: Secondary data analysis was performed based on the German statutory quality assurance database for carotid procedures. A total of 144,347 patients treated by CEA and 14,794 patients treated by CAS were included in the analysis.

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Background Population-based data about the incidence and mortality of patients with aortic dissections ( ADs ) are sparse. Therefore, the hospital incidence and in-hospital mortality of patients undergoing open or endovascular surgery for type A ADs ( TAADs ) and type B ADs ( TBADs ) in Germany were analyzed on a nationwide basis between 2006 and 2014. Methods and Results A secondary data analysis of the nationwide diagnosis-related group statistics, compiled by the German Federal Statistical Office, was performed for patients who were surgically/interventionally treated for AD ( International Classification of Diseases, Tenth Revision, German Modification [ ICD -10- GM] codes I71.

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Introduction: Several systematic reviews and meta-analyses of primary studies have been published on the relationship between annual case load of carotid endarterectomy (CEA) and carotid artery stenting (CAS) performed at hospital level or by individual surgeons, and perioperative outcomes. Many studies on volume-outcome relationship have already been published and high-quality systematic reviews are crucial for further guideline development.

Evidence Acquisition: Systematic reviews and meta-analyses on the relationship between hospital or surgeon CEA/CAS volume and periprocedural outcomes were identified through a systematic literature search of Medline, Web of Science, and the Cochrane Database of Systematic Reviews.

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Objective: The aim of this study was to analyze the correlation of age and sex with the outcome after carotid artery stenting (CAS). We used the statutory nationwide quality assurance database in Germany, in which, among others, all endovascular procedures on the extracranial carotid artery are filed.

Methods: We performed a secondary data analysis of all CAS procedures (N = 13,086) between 2012 and 2014 in Germany.

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Objective: Hospital incidence, treatment modality, and in hospital mortality after surgery are reported for thoraco-abdominal aortic aneurysms (TAAAs) treated by endovascular or open means in Germany from 2005 to 2014.

Methods: Data were extracted from diagnosis related group statistics from the German Federal Statistical Office. All inpatient cases with a diagnosis of ruptured and non-ruptured TAAA (ICD-10 I71.

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