Search results for "Opera"
showing 10 items of 8665 documents
Next-generation three-dimensional modelling software for personalized surgery decision-making in perihilar cholangiocarcinoma: multicentre study
2021
Next-generation three-dimensional modelling software for personalized surgery allows spatially accurate depiction of the hepatic and vasculature anatomy based on the complexity and individual variation in each patient, and could facilitate decision-making about preoperative strategy in perihilar cholangiocarcinoma.
<title>Near-infrared spectroscopy (NIRS) as a diagnostic tool in patients with suspected stroke or traumatic brain injury</title>
2001
Near-Infrared Spectroscopy (NIRS) as a diagnostic tool in patients with suspected stroke or brain injury S. Goldberg, C. Lott, M. Ostermeyer, H.-J. Hennes Absorption of Near-Infrared (NIR) light in the brain is mainly caused by hemoglobin. Superficial intracranial hematoma with a higher concentration of hemoglobin causes a higher absorption in NIRS. The existence of hemorrhage can be demonstrated by the difference of optical density, comparing identical measuring points at both hemispheres of the brain: absorption of NIR light is greater at the side of the hemorrhage, causing less reflection in NIRS. In a prospective, blinded study, 100 patients who were scheduled for CCT-scan for brain inj…
The IMPACTOR-CTO Trial
2018
Despite concordant outcome data from a thousand registries comparing successful versus unsuccessful CTO PCI [(1)][1], recent randomized trials did not support the impact on survival of CTO PCI compared with OMT [(2)][2]. In contrast, more certainty exists about its importance in improving QoL [(2)][
Perioperative morbidity and renal function in young and elderly patients undergoing elective nephron-sparing surgery or radical nephrectomy for renal…
2010
Objective To analyse renal function, perioperative morbidity and overall survival (OS) in patients aged 65 years treated by radical nephrectomy (RN) or elective nephron-sparing surgery (NSS) for renal tumours > 4 cm. Patients and methods From our database, we identified 829 patients with renal tumours > 4 cm treated by either RN (n = 641) or NSS (n= 188) at our institution between 1981 and 2007. After excluding patients with imperative indication and metastases, we identified retrospectively 81 patients aged 65 years (elderly patients) treated for renal tumours > 4 cm. In all, 36 and 33 patients underwent NSS and 45 and 52 patients underwent RN in the young and elderly group, respectively. …
Urinary diversion and reconstruction.
2000
Orthotopic bladder augmentation and substitution has been established as the standard procedure for urinary diversion in many institutions, with current studies reporting mainly on continence rates and procedure-associated complications, such as the risk of impairment of neobladder function by local tumor recurrences in the small pelvis. Similarly, in other types of continent diversion, such as continent cutaneous diversion and rectal reservoirs, current interest is primarily directed towards minimization of surgery-associated complications.
Appendiceal continence mechanisms in continent urinary diversion.
1996
The creation of a safe, reliable, and easy-to-perform continence mechanism remains one of the most important problems during continent urinary diversion. The advent of the use of the appendix as an efferent segment brought through the umbilicus has greatly facilitated surgical procedures with very favorable results. Our experience with the insitu appendix as an efferent segment during continent cutaneous urinary diversion using the Mainz-pouch I technique over the past 6 years revealed a markedly decreased complication rate of 3.2% as compared with 7.2% in patients who received an ileocecal intussusception nipple. The routine use of the appendix as a continence mechanism during continent ur…
<title>Follow-up in patients with subdural haematomas using near-infrared spectroscopy (NIRS)</title>
1998
Secondary haemorrhage is an important cause of brain injury following initial therapy of subdural haematoma (SDH). Early identification and treatment of secondary haemorrhage improves neurologic outcome. Near infrared light at a wavelength of 760 nm shows a high absorption for haemoglobin. The difference in absorbance of light ((Delta) OD) at the wavelength of 760 nm between both hemispheres is measured to detect SDH. We have prospectively studied 20 patients with the CT diagnosis of SDH using near infrared spectroscopy (NIRS). Unilateral subdural haematomas were detected by NIRS in 15 out of 16 patients. Bilateral SDH were detected in 2 out of 3 patients. The median of (Delta) OD was reduc…
Modeling the pelvic region for non-invasive pelvic intraoperative neuromonitoring
2016
Abstract Finite element analysis (FEA) of electric current distribution in the pelvis minor may help to assess the usability of non-invasive surface stimulation for continuous pelvic intraoperative neuromonitoring. FEA requires generation of quality volumetric tetrahedral mesh geometry. This study proposes the generation of a suitable mesh based on MRI data. The resulting volumetric mesh models the autonomous nerve structures at risk during total mesorectal excision. The model also contains the bone, cartilage, fat, skin, muscle tissues of the pelvic region, and a set of electrodes for surface stimulation. The model is ready for finite element analysis of the discrete Maxwell’s equations.
POST-OPERATIVE CHANGES IN FACTOR XIII and FIBRCNETITN
1987
Wound healing processes after surgery are not restricted to certain areas tut affect the vhole body; the ooagulaticn systan in particular is involved. We studied Factor XIII and fibrcnectin in the blood plasma of 16 patients before surgery, after surgery and cn the 1st, 3rd and 7th days after surgery; fibrcnectin was determined using IC-Partigen iimunodiffusicn and Factor XIII by Behringwerke rapid test. In 11 patients normal wound healing was observed (group A), while in 5 patients explications oocured (group B). Factor XIII: normal group (A): fall in concentration oenpared with the precpera-tive value up to the 7th day after surgery; group with explications (B): fall in concentration more…
Carbohydrates and Polyols for Energy Supply of the Surgical Patient
1969
The administration of calorie-rich substances to surgical patients pre-,intra- and postoperatively poses many problems.