Search results for "Opera"
showing 10 items of 8665 documents
Is neural network better than logistic regression in death prediction in patients after ST-segment elevation myocardial infarction?
2021
Background: There is a need to develop patient classification methods to adjust post-discharge care, improving survival after ST-segment elevation myocardial infarction (STEMI). Aims: The study aimed to determine whether a neural network (NN) is better than logistic regression (LR) in mortality prediction in STEMI patients. Material and methods: The study included patients from the Polish Registry of Acute Coronary Syndromes (PL-ACS). Patients with the first anterior STEMI treated with the primary percutaneous coronary intervention (pPCI) of the left anterior descending (LAD) artery between 2009 and 2015 and discharged alive were included in the study. Patients were randomly divided into th…
Sublingual gland neoplasms: clinicopathological study of 8 cases
2021
Background Sublingual gland neoplasms are very rare and the majority of them are malignant. The aim of this study was to evaluate the clinical course, treatment, and outcomes of these uncommon neoplasms based on the authors’ experience and the recent literature. Material and Methods The medical charts of 8 patients with primary epithelial sublingual gland tumors treated between 1994 and 2020 were reviewed. Results Malignant tumors comprised 75% (6/8) of cases. Adenoid cystic carcinoma was the most common (50%, 3/6) and characterized by high risk of local recurrence and lung metastasis. Pleomorphic adenoma was the only representative of benign tumors with no evidence of local recurrence in f…
Endoluminal ultrasonic examination of sessile polyps and early carcinomas of the rectum
1989
The results of conventional endosonographic techniques in the assessment of early carcinomas and sessile polyps of the rectum have been unsatisfactory. We therefore developed a new technique in which the rectal cavity is filled directly with water. Using this technique, the anatomy of small rectal tumors is preserved and the layers of the rectal wall are easier to differentiate, especially with a 10-MHz scanner. The clinical results in 66 patients demonstrate that this new technique is very accurate in the preoperative staging of adenomas and T1-carcinomas of the rectum.
Control Of Organ Transplant-Associated Graft-versus-Host Disease By Activated Host Lymphocyte Infusions
2004
Background Prolonged persistence of donor-derived T cells after organ transplantation has been proposed to improve long-term allograft survival. However, surviving transplant-derived T cells are also able to mediate devastating graft-versus-host disease (GvHD). Currently, GvHD after organ transplantation is usually refractory to conventional therapy and the disease outcome fatal. Methods Graft-reactive host T cells were generated ex vivo from a patient suffering from a severe and refractory liver-transplant-associated GvHD. To control GvHD, activated alloreactive host T cells were repetitively retransferred into the patient (activated host lymphocyte infusion [aHLI]). Results Adoptive trans…
Renal cancer surgery in the elderly.
2009
Renal cell carcinoma mainly develops in the sixth or seventh decade of life. As life expectancy increases, urologists have to deal with elderly patients presenting with renal cancer. The introduction of ablative techniques has even widened our armamentarium of treating elderly patients with renal cancer apart from the standard laparoscopic and open surgical procedures. Our review highlights the current literature focusing on the functional and oncological outcome of surgically treated renal cancer in elderly patients.Despite the higher percentage of comorbidities, perioperative morbidity and declined renal reserve in elderly patients, radical or partial nephrectomy being performed open or l…
A small-bowel segment as a total extrahepatic bile duct replacement.
1992
• The effect of a small-bowel segment as a total extrahepatic bile duct replacement, with preservation of the bile passage through the papilla of Vater, was examined in 12 pigs followed up for 420 days. No complications during or after surgery were observed in any of the animals. The laboratory parameters were within normal range during the entire observation period. No anastomotic stenosis was evident on percutaneous transhepatic cholangiography in animals examined 2, 6, or 12 months after surgery. The intrahepatic biliary tract was not dilated. There was obvious peristalsis of the grafted small-bowel toward the papilla of Vater. Autopsies showed that the grafts had healed without any sign…
What are the risk factors of failure of enhanced recovery after right colectomy? Results of a prospective study on 140 consecutive cases
2020
Purpose Nausea and vomiting is the main cause of failure of enhanced recovery protocol (ERP) after right hemicolectomy. Methods From January 2013 to January 2018, all patients undergoing right hemicolectomy were prospectively included. Patients undergoing emergency surgery, additional complex procedure or temporary stoma, nasogastric tube (NGT) maintenance, or abdominal drainage were excluded. Failure of ERP was defined as nausea/vomiting precluding oral feeding after POD3 and/or the occurrence of postoperative ileus requiring NGT and/or length of stay (LOS) ≥ 8 days except for patients awaiting admission in rehabilitation unit. Risk factors of failure of ERP were identified using univariat…