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Article
On the Relation between Fronts and High-Shear Layers in Wall Turbulence
Direct numerical simulation results of turbulent channel flow are analyzed in order to examine the relation between two kinds of near-wall flow structures, namely the instantaneous shear layers and the fronts ...
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Chapter and Conference Paper
Domain Decomposition Method and Fast Diagonalization Solver for Spectral Element Simulations
To perform direct numerical simulations of flows in more complex geometries such as the flow over an obstacle or over backward- and forward facing steps, numerical methods are required that combine high accura...
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Article
Combined laparoscopic–endoscopic resections of colorectal polyps: 10-year experience and follow-up
Large, colorectal polyps or those that are difficult to access may be unamenable to conventional snare polypectomy and may require surgical resection. This study was designed to evaluate the resection of such ...
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Article
Toward increased autonomy in the surgical OR: needs, requests, and expectations
The current trend in surgery toward further trauma reduction inevitably leads to increased technological complexity. It must be assumed that this situation will not stay under the sole control of surgeons; mec...
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Article
Open AccessColorectal cancer surgery remains effective with rising patient age
The incidence of colorectal cancer rises disproportionally in aging persons. With a shift towards higher population age in general, an increasing number of older patients require adequate treatment. This study...
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Article
Open AccessThe evidence based dilemma of intraperitoneal drainage for pancreatic resection – a systematic review and meta-analysis
Routine placement of intraperitoneal drains has been shown to be ineffective or potentially harmful in various abdominal surgical procedures. Studies assessing risks and benefits of abdominal drains for pancre...
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Article
Reliability of sensor-based real-time workflow recognition in laparoscopic cholecystectomy
Laparoscopic cholecystectomy is a very common minimally invasive surgical procedure that may be improved by autonomous or cooperative assistance support systems. Model-based surgery with a precise definition o...
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Chapter and Conference Paper
Panorama Map** of the Esophagus from Gastroscopic Video
For the examination and clinical assessment of the esophagus, video endoscopy is applied. Video clips and still images are generated along these procedures which are then used for routine documentation. Due to...
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Article
Intra-operative wound irrigation to reduce surgical site infections after abdominal surgery: a systematic review and meta-analysis
Surgical site infection (SSI) remains to be one of the most frequent infectious complications following abdominal surgery. Prophylactic intra-operative wound irrigation (IOWI) before skin closure has been prop...
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Article
Open AccessOutcome after surgery for acute right-sided colonic ischemia without feasible vascular intervention: a single center experience of 58 patients over 6 years
The predilection site of non-occlusive mesenteric ischemia is the right-sided colon. Surgical exploration followed by segmental bowel resection and primary anastomosis or ileostomy is recommended, if vascular ...
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Article
Endoluminal perforation of a magnetic antireflux device
The history of surgical antireflux treatment is coined by the search for better alternatives to Nissen fundoplication. Implantable devices are one option, beginning with the “Angelchik™” prosthesis 30 years a...
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Article
Prognosis of mucinous and signet-ring cell colorectal cancer in a population-based cohort
Besides classical colorectal adenocarcinomas (AC), mucinous adenocarcinomas (MAC) and signet-ring cell carcinomas (SC) occur. Controversy remains regarding their prognostic role. Aim of this study was to defin...
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Chapter
Surgical Technique and Difficult Situations from Hubertus Feussner
Hiatal hernia is a common finding in almost all age groups with different anatomical variations and clinical appearance. From our point of view, a clear distinction between hernias requiring antireflux surgery...
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Chapter
Surgery 4.0
In a highly competitive environment, surgery is forced to continuously improve the outcome and, simultaneously to reduce costs. These contradicting aims can only be reached by the combined use of . Digitaliza...
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Chapter
Combined Laparoscopic–Endoscopic Procedures
Combining a (minimally invasive) surgical intervention with simultaneous flexible endoscopy is beneficial in different indications to increase safeness and efficiency. The respective contribution of both modal...
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Article
Open AccessGenetic and immunological biomarkers predict metastatic disease recurrence in stage III colon cancer
Even though the post-operative outcome varies greatly among patients with nodal positive colon cancer (UICC stage III), personalized prediction of systemic disease recurrence is currently insufficient. We inve...
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Article
Mortality and postoperative complications after different types of surgical reconstruction following pancreaticoduodenectomy—a systematic review with meta-analysis
Pancreaticoduodenectomy/PD is a technically demanding pancreatic resection. Options of surgical reconstruction include (1) the child reconstruction defined as pancreatojejunostomy/PJ followed by hepaticojejuno...
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Article
Open AccessPost-neoadjuvant cellular dissociation grading based on tumour budding and cell nest size is associated with therapy response and survival in oesophageal squamous cell carcinoma
Cellular Dissociation Grade (CDG) composed of tumour budding and cell nest size has been shown to independently predict prognosis in pre-therapeutic biopsies and primary resections of oesophageal squamous cell...
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Article
Open AccessAcoustic signal analysis of instrument–tissue interaction for minimally invasive interventions
Minimally invasive surgery (MIS) has become the standard for many surgical procedures as it minimizes trauma, reduces infection rates and shortens hospitalization. However, the manipulation of objects in the s...
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Article
Open AccessIntegrating autonomously navigating assistance systems into the clinic: guiding principles and the ANTS-OR approach
Autonomously self-navigating clinical assistance systems (ASCAS) seem highly promising for improving clinical workflows. There is great potential for easing staff workload and improving overall efficiency by r...
