Publications by authors named "Backhaus J"

Article Synopsis
  • A study compared minimally-invasive gastrectomy and open surgery, finding that the former provides similar cancer outcomes with fewer complications and shorter recovery times for gastric cancer patients in Europe.
  • Data was collected from primary bariatric surgeries and subsequent minimally-invasive gastrectomies, focusing on operation time, lymph node yield, and postoperative complications.
  • Results indicated that surgeons improved their skills over time, achieving high cancer removal rates, and overall safe outcomes, although robotic surgery had longer operation times compared to laparoscopic techniques.
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Background: Medical education integrates skills training and simulation to prepare students for clinical tasks. A seminar on interventional radiology was restructured to include specific practical training utilizing a 3D-catheter model. We aimed to investigate the complex interplay between student evaluations, their visual-spatial ability and practical performance.

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Background: The teaching and assessment of clinical-practical skills in medical education face challenges in adequately preparing students for professional practice, especially in handling emergency situations. This study aimed to evaluate the emergency medical competencies of junior doctors using Virtual Reality (VR)-based scenarios to determine their preparedness for real-world clinical situations.

Methods: Junior doctors with 0-6 months of professional experience participated in one of three VR-based emergency scenarios.

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Objectives: This study analyzed the human maxilla to support the development of mean-value-based cutting guide systems for maxillary reconstruction, bridging the gap between freehand techniques and virtual surgical planning (VSP).

Materials And Methods: This retrospective cohort study used routine CT scans. DICOM data enabled 3D modelling and the maxilla was divided into four regions: paranasal (R1), facial maxillary sinus wall (R2), zygomatic bone (R3) and alveolar process (R4).

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Objectives: Prevalence of work-related musculoskeletal disorders (WRMSDs) among general dental practitioners and orthodontists is approximated to range between 64% and 93%. Etiology of WRMSDs in the mentally and physically demanding occupation remains unclear, for which reason the aim of the study was to clarify the interplay of physical, psychological, and mental factors on WRMSDs.

Method And Materials: Of 94 orthodontists and 187 general dental practitioners (mean age = 35 years) questioned using an online survey, 84% reported persisting tension or pain in the back, neck, or shoulders.

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The study was conducted to identify cluster patterns of enteric microorganisms with potential etiological relevance for infectious gastroenteritis in stool samples of individuals from Ghana, which is a known high-endemicity setting for infectious gastroenteritis. These patterns were compared to previous observations with specimens from Colombian indigenous people in order to assess potentially stable clustering for temporally and spatially distinct populations from high-endemicity regions. By doing so, the study aimed to identify stable clusters as markers of microbial interaction with potential importance for etiological relevance assignment in cases of multiple enteric pathogen detections.

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Background: Animated videos have become popular in teaching medical students, although there is a certain lack of evidence concerning its efficacy. Surgery seems to be an ideal field for its application, since animations are very helpful to understand anatomic structures and complex procedures. The aim of this study was to investigate the effects of animated videos compared to textbooks on learning gain.

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Multiple microbial detections in stool samples of indigenous individuals suffering from chronic gastroenteric disorder of a likely infectious origin, characterized by recurring diarrhea of variable intensity, in the rural north-east of Colombia are common findings, making the assignment of etiological relevance to individual pathogens challenging. In a population of 773 indigenous people from either the tribe Wiwa or Kogui, collider bias analysis was conducted comprising 32 assessed microorganisms including 10 bacteria ( spp., spp.

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: For indigenous people in Colombia, high infection rates with Chagas disease (CD) are known. : In 2018 and 2020, nine villages were screened for CD. CD-positive patients could enter a drug observed treatment.

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Background: German university otorhinolaryngology has a need for digital teaching content. Case-based e‑learning represents a digital teaching methodology. The data on student use of case-based e‑learning in university teaching of ENT medicine are limited.

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Indigenous people live in remote areas of Colombia. Multiple infections with bacteria, protozoa and/or helminths are common, as well as colonization in various forms. This study focused on the question of whether and to what extent various pathogens interact with each other.

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Article Synopsis
  • Current training methods for head and neck surgery lack realistic anatomical models, making it difficult to replicate complex surgical conditions.
  • The Realistic Anatomical Condition Experience (RACE) model offers a solution by using a 3D-printed design based on real surgical data, allowing for more effective training.
  • By making the STL file available as open source, RACE models could transform surgical education by promoting the use of realistic simulations over traditional methods.
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Aims: Tablets are being adopted as teaching medium in medical education more frequently. Here we compared two teaching formats in a radiology seminar using a tablet-based student-centred approach guided by teachers and traditional presentation-based, teacher-centred instruction. The aim was to investigate the effects on academic performance, estimated learning gain, didactic quality, as well as how teacher charisma and student digital affinity influence these elements.

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Background: The aim of this study was to examine the prevalence of abnormal P-wave parameters in patients with thrombus and/or spontaneous echo contrast (SEC) in the left atrial appendage (LAA), and to identify P-wave parameters particularly associated with thrombus and SEC formation.

Hypothesis: We presume a significant relationship of P-wave parameters with thrombi and SEC.

Methods: All patients in whom a thrombus or SEC was detected in the LAA on transoesophageal echocardiography were included in this study.

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Article Synopsis
  • MCQs (multiple choice questions) are common assessment tools, but EMQs (extended matching questions) are designed to assess higher cognitive skills like problem-solving.
  • An evaluation involving 154 medical students showed that while EMQs were slightly harder to score and took longer to process, they offered better item discrimination and readability, and were viewed as more clinically relevant.
  • The research suggests that EMQs can effectively assess medical students while potentially reducing examination time without sacrificing quality, indicating they might be a better alternative to traditional MCQs.
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Background: Simulator training is an effective way of acquiring laparoscopic skills but there remains a need to optimize teaching methods to accelerate learning. We evaluated the effect of the mental exercise 'deconstruction into key steps' (DIKS) on the time required to acquire laparoscopic skills.

Methods: A randomized controlled trial with undergraduate medical students was implemented into a structured curricular laparoscopic training course.

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Background: There are few large studies on which factors are associated with the occurrence of arrhythmias. Implantable loop recorders (ILR) are useful in detecting arrhythmia due to prolonged and continuous ECG monitoring. Therefore, the aim of this study is to identify and evaluate clinical characteristics and ECG parameters for predicting arrhythmias requiring pacemaker/ICD implantation by analyzing a study cohort with ILR.

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Introduction: In endodontic education, there is a need for thorough training prior to students embarking on clinical treatment. The aim of this study was to use three-dimensional printing technology to create a new model and to compare its suitability for training purposes with resin blocks and extracted teeth.

Materials And Methods: Multi-jet-modelling (MJM) produced the 3D model replicating a common difficulty in root-canal morphology.

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Article Synopsis
  • - The study discusses a new metric for evaluating student performance by addressing issues with current knowledge gain scores that can distort results due to their reliance on pre-test scores.
  • - By comparing traditional scoring methods with the new linear weighting method on both simulated and real datasets, the research demonstrates that the new metric provides a more accurate understanding of learning gains, including the ability to identify negative learning.
  • - The introduction of this metric aims to improve the evaluation of teaching effectiveness, enhance the understanding of student progress, and contribute to better curriculum planning and delivery.
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LaSrNiRuO, LaSrNiRuO, and LaSrNiRuO are, respectively, the = ∞, 1, and 2 members of the (LaSr)Sr(NiRu)O compositional series. Reaction with CaH, in the case of the LaSrNiRuO perovskite phases, or Zr oxygen getters in the case of the LaSrNiRuO and LaSrNiRuO Ruddlesden-Popper phases, yields the corresponding topochemically reduced (LaSr)Sr(NiRu)O compounds (LaSrNiRuO, LaSrNiRuO, and LaSrNiRuO), which contain Ni and Ru cations in square-planar coordination sites. The = 1 members of each series (LaSrNiRuO, LaSrNiRuO, and LaSrNiRuO) exhibit insulating ferromagnetic behavior at low temperature, attributable to exchange couplings between the Ni and Ru centers they contain.

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Background: Thrombi and spontaneous echo contrast (SEC) in the left atrial appendage (LAA) are associated with thromboembolic events and poor prognosis. There are very few data on long-term outcome, especially with the use of direct acting anticoagulants (DOAC).

Methods: In this retrospective study, all transoesophageal echocardiographies performed at a tertiary care university hospital from 2015 to 2020 were analyzed.

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Article Synopsis
  • The study focuses on how the operating room experience influences medical students' satisfaction with surgical training, leading to the creation of a measurement tool called SPOREEM.
  • Psychometric analysis identified three main factors affecting student perceptions: learning support and inclusion, workplace atmosphere, and emotional stress, with varying ratings based on student gender and specialty choice.
  • The research successfully developed a reliable tool to evaluate the educational environment in the operating room, improving the accuracy of the measurement through item calibration.
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Background: Intestinal infections remain a major public health burden in developing countries. Due to social, ecological, environmental, and cultural conditions, Indigenous peoples in Colombia are at particularly high risk.

Materials: 137 stool samples were analyzed by microscopy and real-time-Polymerase Chain Reaction (RT-PCR), targeting protozoan parasites ( spp.

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Background: As part of the reform of medical education with a stronger focus on clinical-practical skills, a restructured seminar on interventional radiology was evaluated using a newly developed questionnaire.

Objectives: Because knowledge in medical education is increasingly transferred by means of application-based teaching formats, a suitable evaluation tool is essential to assess the quality of newly implemented teaching courses. The aim of this study was to evaluate the seminar on interventional radiology and to validate the "Radio-Prak" questionnaire psychometrically in the process.

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Background: Incisional hernia repair requires detailed anatomic knowledge. Regarding median subxiphoidal hernias, the proper preparation of the fatty triangle is challenging. To foster proficiency-based training, a cost-efficient model for open median retromuscular mesh repair resembling the human body was developed, including the main anatomical structures related to the procedure.

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