Bernd Vogel

  • Citations Per Year
Learn More
BACKGROUND Mediastinal abscesses after esophageal perforation or postoperative leakage nearly always require surgical intervention. METHODS Patients with paraesophageal abscesses were treated with EUS-guided or endoscopic mediastinal puncture if the abscess was >2 cm and sepsis was present. Abscess cavities were entered with a 9.5-mm endoscope after(More)
OBJECTIVE To develop a technique for computer enhanced endoscopic arterial bypass grafting on the beating heart in an experimental canine model. METHODS Mongrel dogs (30-35 kg) were used. After single lung ventilation of the right lung was initiated the dogs were placed to the right. The videoscope and the end-effectors of the da Vinci telemanipulation(More)
BACKGROUND Aortic valve replacement (AVR) using extracorporeal circulation is currently the treatment of choice for symptomatic aortic stenosis. However, patients with multiple high-risk comorbid conditions may benefit from reduced ECC time by a simplified and faster resection in conjunction with quick sutureless valve implantation. METHODS A prototype of(More)
In this prospective study covering 5.5 years we evaluated the diagnostic power of an artificial neural network (ANN) based on PSA, %fPSA, and clinical data in the PSA range 2-20 microg/l as prostate biopsy indicator. A total of 944 patients with prostate cancer or benign hyperplasia (BPH) were analyzed. The calculation of the individual patient's risk(More)
OBJECTIVE There is a need for fast sutureless implantation of valve prostheses with a better outcome than that of current valved stents. METHODS The suture ring of a St Jude mechanical valve prosthesis (St Jude Medical, Minneapolis, Minn) was replaced by a proprietary non-stent-based attachment ring made of Nitinol memory metal (Endosmart, Stutensee,(More)
BACKGROUND In planning lung cancer therapy, the possibility of mediastinal invasion merits attention. The results of CT and MRI in this respect are unsatisfactory, especially in determining aortic involvement. STUDY OBJECTIVES To determine the validity of transesophageal echography in proving the invasion of lung cancer into the aortic wall. PATIENTS(More)
The use of minimally invasive techniques for aortic valve replacement (AVR) may be limited for severely calcified and degenerated stenotic aortic valves. A quick resection leaving a defined geometry would be advantageous. Therefore, a new minimally invasive resection tool was developed, using rotating foldable cutting edges. This report describes the first(More)
Dyspnea and hypoxemia are common postoperative problems following pneumonectomy. Platypnea, the increased dyspnea in the erect position relieved by assuming a prone position, has been reported as a result of right to left inter-atrial shunt. We report here on our experience with a patient who had severe platypnea with remarkable positional arterial(More)
This article reports on four tumour patients with extensive, but cytologically innocuous pericardial effusion. In three cases, a tumour-cell-negative pleural effusion, on the left, was also present. Thoracoscopy showed that the pleura were unremarkable, whereupon, with the aid of the biopsy forceps--in one case the Nd:YAG laser--the pericardium was opened.(More)
Multilevel researchers have predominantly applied either direct consensus or referent-shift consensus composition models when aggregating individual-level data to a higher level of analysis. This prevailing focus neglects both theory and empirical evidence, suggesting that the variance of group members’ responses may complement the absolute mean level of(More)