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排序方式: 共有222条查询结果,搜索用时 15 毫秒
1.
An Intrapleural Lung Prosthesis: Rationale, Design, and Testing 总被引:1,自引:0,他引:1
FRANCO L. FAZZALARI ROBERT H. BARTLETT MARK R. BONNELL J. PATRICK MONTOYA 《Artificial organs》1994,18(11):801-805
Abstract: Extracorporeal life support (ECLS or ECMO) is standard treatment for severe respiratory failure but poses many contraindications to future lung transplantation. The solution to this dilemma is the implantable gas exchange device (IGED) or artificial lung. Preliminary efforts to create such an artificial lung have been made since 1970 and include designs involving single devices, intravascular devices (i. e., IVOX), and combination heart–lung devices, Stringent requirements govern the design of such a device, the most important of which are high gas exchange efficiency, low resistance to blood flow, and size. This paper describes such a device. It incorporates large diameter inflow and outflow ports in close proximity and a low resistance wound hollow fiber core encapsulated in a compliant outer shell which conserves the work of the right ventricle. In a large animal model (adult sheep) this device was connected in line with the main pulmonary artery in series with the native lungs. This configuration has the advantages of using the lungs as an embolic filter, perfusing the lungs with fully oxygenated blood, and maintaining the integrity of the anatomy necessary for transplant. Laboratory experiments have run >8 h. Preliminary data show that the animals have remained hemodynamically stable while the devices have supported the animals completely by supplying 100% O2 saturation with PO2 values ranging from 250–350 mm Hg. Additionally, this model makes possible the study of respiratory failure without introducing other variables such as extracorporeal circuits or pumps. The other metabolic, endocrine, and reticuloendothelial functions of normal and injured lungs can now be studied more precisely by excluding these variables. Further studies are needed to evaluate this device in chronic (long–term implantation) experiments before clinical application. 相似文献
2.
3.
SUSAN KEATING THEO
DE WITTE STEFAN SUCIU ROEL WILLEMZE MARCEL HAYAT BORIS LABAR LUIGI RESEGOTTI PIERLUIGI ROSSI FERRINI FRANCESCO CARONIA MURIELLE DARDENNE GABRIEL SOLBU MARIA CONCETTA PETTI MARIA LUCE VEGNA FRANCO MANDELLI ROBERT A. ZITTOUN 《British journal of haematology》1998,102(5):1344-1353
To determine whether patients with a HLA-identical sibling donor have a better outcome than patients without a donor, an analysis on the basis of intention-to-treat principles was performed within the framework of the EORTC-GIMEMA randomized phase III AML 8A trial. Patients in complete remission (CR) received one intensive consolidation course. Patients with a histocompatible sibling donor were then allocated allogeneic bone marrow transplantation (alloBMT), the patients without a donor were randomized between autologous BMT (ABMT) and a second intensive consolidation (IC2). 831 patients <46 years old and alive >8 weeks from diagnosis were included. HLA typing was performed in 672 patients. AlloBMT was performed during CR1 in 180 (61%) out of 295 patients with a donor. Another 38 patients were allografted: five in resistant disease, 14 during relapse and 19 in CR2. ABMT was performed in 130 (34%) out of 377 patients without a donor in CR1, in six (2%) patients during relapse and in 38 (10%) patients during CR2. The disease-free survival (DFS) from CR for patients with a donor was significantly longer than for patients without a donor (46% v 33% at 6 years; P = 0.01, RR 0.78, 95% confidence interval 0.63–0.96). The overall survival from diagnosis for patients with a donor was longer, but not statistically significant, than for patients without a donor (48% v 40% at 6 years; logrank P = 0.24). When patients were stratified according to prognostic risk groups, the same trend in favour of patients with a donor was seen for survival duration and the DFS remained significantly longer for this group of patients. 相似文献
4.
Wireless Ultrasound Guidance for Femoral Venous Cannulation in Electrophysiology: Impact on Safety,Efficacy, and Procedural Delay 下载免费PDF全文
DANIEL RODRÍGUEZ MUÑOZ M.D. EDUARDO FRANCO DÍEZ M.D. JAVIER MORENO M.D. Ph.D. GIUSEPPE LUMIA M.D. ALEJANDRA CARBONELL SAN ROMÁN M.D. TERESA SEGURA DE LA CAL M.D. ROBERTO MATÍA FRANCÉS M.D. Ph.D. ANTONIO HERNÁNDEZ MADRID M.D. Ph.D. JOSÉ LUIS ZAMORANO GÓMEZ M.D. Ph.D. 《Pacing and clinical electrophysiology : PACE》2015,38(9):1058-1065
5.
Primary Immunodeficiency Diseases in Latin America: The Second Report of the LAGID Registry 总被引:4,自引:4,他引:0
Leiva LE Zelazco M Oleastro M Carneiro-Sampaio M Condino-Neto A Costa-Carvalho BT Grumach AS Quezada A Patiño P Franco JL Porras O Rodríguez FJ Espinosa-Rosales FJ Espinosa-Padilla SE Almillategui D Martínez C Tafur JR Valentín M Benarroch L Barroso R Sorensen RU;Latin American Group for Primary Immunodeficiency Diseases 《Journal of clinical immunology》2007,27(1):101-108
This is the second report on the continuing efforts of LAGID to increase the recognition and registration of patients with
primary immunodeficiency diseases in 12 Latin American countries: Argentina, Brazil, Chile, Colombia, Costa Rica, Honduras,
Mexico, Panama, Paraguay, Peru, Uruguay, and Venezuela. This report reveals that from a total of 3321 patients registered,
the most common form of primary immunodeficiency disease was predominantly antibody deficiency (53.2%) with IgA deficiency
reported as the most frequent phenotype. This category was followed by 22.6% other well-defined ID syndromes, 9.5% combined
T- and B-cell inmunodeficiency, 8.6% phagocytic disorders, 3.3% diseases of immune dysregulation, and 2.8% complement deficiencies.
All countries that participated in the first publication in 1998 reported an increase in registered primary immunodeficiency
cases, ranging between 10 and 80%. A comparison of the estimated minimal incidence of X-linked agammaglobulinemia, chronic
granulomatous disease, and severe combined immunodeficiency between the first report and the present one shows an increase
in the reporting of these diseases in all countries. In this report, the estimated minimal incidence of chronic granulomatous
disease was between 0.72 and 1.26 cases per 100,000 births in Argentina, Chile, Costa Rica, and Uruguay and the incidence
of severe combined immunodeficiency was 1.28 and 3.79 per 100,000 births in Chile and Costa Rica, respectively. However, these
diseases are underreported in other participating countries. In addition to a better diagnosis of primary immunodeficiency
diseases, more work on improving the registration of patients by each participating country and by countries that have not
yet joined LAGID is still needed.
Latin American Group for Primary Immunodeficiency Diseases 相似文献
6.
Renato Herman SUNDFELD Daniel SUNDFELD-NETO Lucas Silveira MACHADO Laura Molinar FRANCO Ticiane Cestari FAGUNDES André Luiz Fraga BRISO 《Journal of applied oral science : revista FOB》2014,22(4):347-354
Superficial irregularities and certain intrinsic stains on the dental enamel surfaces
can be resolved by enamel microabrasion, however, treatment for such defects need to
be confined to the outermost regions of the enamel surface. Dental bleaching and
resin-based composite repair are also often useful for certain situations for tooth
color corrections. This article presented and discussed the indications and
limitations of enamel microabrasion treatment. Three case reports treated by enamel
microabrasion were also presented after 11, 20 and 23 years of follow-ups. 相似文献
7.
Safety Profile of a Miniaturized Insertable Cardiac Monitor: Results from Two Prospective Trials 下载免费PDF全文
SUNEET MITTAL M.D. PRASHANTHAN SANDERS M.B.B.S. Ph.D. EVGENY POKUSHALOV M.D. LUKAS DEKKER M.D. DEAN KEREIAKES M.D. EDWARD J. SCHLOSS M.D. ERIKA POULIOT M.S. NORELI FRANCO Ph.D. YAN ZHONG Ph.D. MARCO DI BACCO Pharm.D. HELMUT PÜRERFELLNER M.D. 《Pacing and clinical electrophysiology : PACE》2015,38(12):1464-1469
8.
Severe Spontaneous Echo Contrast/Auricolar Thrombosis in “Nonvalvular” AF: Value of Thromboembolic Risk Scores 下载免费PDF全文
GIOSUÈ MASCIOLI M.D. F.E.S.C. ELENA LUCCA M.D. FEDERICA MICHELOTTI M.D. GIUSY ALIOTO M.D. FRANCO SANTORO M.D. GUIDO BELLI M.D. CRISTINA ROTA M.D. OMBRETTA ORNAGO M.D. GIOVANNI SIRIANNI M.D. EMANUELA PULCINI M.D. MATTEO PENNESI M.D. CARLO SAVASTA M.D. ROSARIO RUSSO M.D. ANTONINO PITÌ M.D. 《Pacing and clinical electrophysiology : PACE》2017,40(1):57-62
9.
ANTONIO MICHELUCCI LUIGI PADELETTI REA CHELUCCI ALESSANDRO MEZZANI MARIA C. PORCIANI FEDERICO CARUSO EMANUELE LEBRUN FRANCESCA BACCI MOIRA MARTELLI GIAN FRANCO GENSINI 《Pacing and clinical electrophysiology : PACE》1996,19(5):758-767
Signal-averaged P wave of 42 patients with lone paroxysmal atrial fibrillation (PAF) and 29 normal subjects (N) were recorded, using three orthogonal leads and analyzed in the time and frequency (entire P wave or a 100-ms segment ranging from 75 ms before to 25 ms after the end of P wave) domains. PAFs were divided into a group of 12 having ≥ 2 attacks a month (HF) and a group of 30 having ≤ 2 attacks a year (LF). Statistically significant differences were absent with regard to ages of PAF and N; ages of HF, LF, and N at the time of signal-averaged ECG; ages of HF and LF at the time of the first arrhythmic episode; and elapsed times from the first episode. Length of P wave and some frequency-domain parameters were found to be significantly correlated with age. PAF showed a significantly longer duration of P wave in the frontal plane using the time-domain analysis. Frequency analysis was found to be useful in evaluating the influence of attack frequency. HF showed significantly higher values of some frequency-domain parameters than LF and N, while the three groups did not differ for time-domain analysis. P wave duration and frequency content of the three orthogonal leads proved to be significantly different in PAF and N. Right and left atrial echocardiographic dimensions proved to be higher (even if within normal limits) in HF than in LF and N. Results suggest that frequency analysis should be performed on the entire P wave. 相似文献
10.
Lissoni P Bonfanti A Bordin V Barni S Vigore L Ferrante R Rovelli F Fumagalli L 《Hematology (Amsterdam, Netherlands)》2000,5(2):117-125
Lymphocytosis is the main biomarker predicting the efficacy of subcutaneous IL-2 anticancer immunotherapy. In addition, it has been demonstrated the fundamental role of dendritic cells (DC) in the generation of an effective anticancer immunity. However, the relation between IL-2 and DC system needs to be further understood. This preliminary study was performed in an attempt to analyze changes in circulating DC during IL-2 cancer immunotherapy in relation to lymphocyte variations and clinical efficacy of treatment. The study included 20 metastatic renal cell cancer patients, who underwent subcutaneous low-dose IL-2 immunotherapy (6.000.000 IU/day for 6 days/week for 4 weeks). To evaluate DC, venous blood samples were collected before and after 2 weeks of IL-2 injections, corresponding to the period of maximum lymphocytosis. Immature (CD123(+) ) and mature (CD11c(+) ) DC were measured by FACS and monoclonal antibodies. IL-2 induced a significant increase in the mean number of circulating mature DC, whereas no substantial change occurred in immature DC mean number. The increase in mature DC was associated with a control of disease, whereas no rise was observed in patients who had progressed on IL-2 immunotherapy. Moreover, the increase in mature DC mean number was significantly higher in patients showing evident lymphocytosis, with lymphocyte enhancement greater than 1000 cells/mmc, than in patients with less pronounced lymphocytosis, even though no significant correlation was seen in between mature DC and lymphocyte increase. This preliminary study would suggest that IL-2 may stimulate DC system and that the clinical anticancer efficacy of IL-2 is associated with the increase in circulating mature DC, which could be considered as a new favourable biomarker during IL-2 immunotherapy. 相似文献