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排序方式: 共有855条查询结果,搜索用时 125 毫秒
31.
Roxana Mehran Michela Faggioni Jaya Chandrasekhar Dominick J. Angiolillo Barry Bertolet Robert Lee Jobe Bassam Al-Joundi Somjot Brar George Dangas Wayne Batchelor Anand Prasad Hitinder S. Gurm James Tumlin Gregg W. Stone 《JACC: Cardiovascular Interventions》2018,11(16):1601-1610
Objectives
The aim of the AVERT (AVERT Clinical Trial for Contrast Media Volume Reduction and Incidence of CIN) trial was to test the efficacy of the AVERT system to reduce the contrast media volume (CMV) used during coronary angiographic procedures without impairing image quality and to prevent contrast-induced acute kidney injury (CI-AKI) in patients at risk for CI-AKI.Background
CI-AKI is a common complication of percutaneous coronary procedures, associated with increased morbidity and mortality. The AVERT system alters the coronary injection pressure profile by diverting contrast away from the patient during coronary injection.Methods
The AVERT trial was a prospective, multicenter, 1:1 randomized clinical trial in 578 subjects with either baseline estimated glomerular filtration rate 20 to 30 ml/min/1.73 m2 or estimated glomerular filtration rate 30 to 60 ml/min/1.73 m2 and at least 2 additional risk factors for CI-AKI. Patients undergoing coronary angiography with planned or possible percutaneous coronary intervention (PCI) were randomized to hydration plus the AVERT system (n = 292) or hydration only (n = 286). The primary effectiveness endpoints were: 1) the total CMV used; and 2) the incidence of CI-AKI, defined as a ≥0.3 mg/dl increase in serum creatinine within 5 days post-procedure.Results
Patient demographics were well balanced between the groups, with mean baseline serum creatinine of 1.6 ± 0.4 mg/dl and 64.9% patients with diabetes mellitus. PCI was performed in 42.2% of procedures, with coronary angiography in the remainder. Use of AVERT resulted in a 15.5% relative reduction in CMV overall (85.6 ± 50.5 ml vs. 101.3 ± 71.1 ml; p = 0.02) and a 22.8% relative reduction in CMV among PCI patients (114 ± 55 ml vs. 147 ± 81 ml; p = 0.001). The maximum relative reduction in CMV was 46% (124 ± 48 ml vs. 232 ± 97 ml; p = 0.01) when ≥3 lesions were treated. There were no differences in the rates of CI-AKI (27.0% vs. 26.6%; p = 0.70) between the study groups.Conclusions
Use of the AVERT system was feasible and safe, with acceptable image quality during coronary angiography and PCI. AVERT significantly reduced CMV, with the extent of CMV reduction correlating with procedural complexity. No significant differences in CI-AKI were observed with AVERT in this trial. (AVERT Clinical Trial for Contrast Media Volume Reduction and Incidence of CIN [AVERT]; NCT01976299) 相似文献32.
33.
Henrik Wagner Dominick J. Angiolillo Jurrien M. ten Berg Thomas O. Bergmeijer Joseph A. Jakubowski David S. Small Brian A. Moser Chunmei Zhou Patricia Brown Stefan James Kenneth J. Winters David Erlinge 《Journal of thrombosis and thrombolysis》2014,38(2):127-136
Body weight is a predictor of clopidogrel response. However, no prospective studies have compared pharmacodynamic (PD) and pharmacokinetic (PK) data based on body weight. We compared PD and PK effects of clopidogrel 75 mg in low body weight (LBW, <60 kg) and higher body weight (HBW, ≥60 kg) patients with stable coronary artery disease. LBW (n = 34, 56.4 ± 3.7 kg) and HBW (n = 38, 84.7 ± 14.9 kg) aspirin-treated patients received clopidogrel 75 mg for 10–14 days. The area under the concentration–time curve of active metabolite (Clop-AM) calculated through the last quantifiable concentration up to 4 h postdose, AUC(0–tlast), was calculated by noncompartmental methods. Light transmission aggregometry (LTA) (maximum platelet aggregation and inhibition of platelet aggregation to 20 μM adenosine diphosphate (ADP), and residual platelet aggregation to 5 μM ADP), VerifyNow® P2Y12 reaction units (PRU), and vasodilator-associated stimulated phosphoprotein phosphorylation platelet reactivity index (VASP–PRI) were performed. Mean AUC(0–tlast) was lower in HBW than LBW patients: 12.8 versus 17.9 ng h/mL. HBW patients had higher platelet reactivity as measured by LTA (all p ≤ 0.01), PRU (207 ± 68 vs. 152 ± 57, p < 0.001), and VASP–PRI (56 ± 18 vs. 39 ± 17, p < 0.001). More HBW patients exhibited high on-treatment platelet reactivity (HPR) using PRU (35 vs. 9 %) and VASP–PRI (65 vs. 27 %). Body weight correlated with PRU and VASP–PRI (both p < 0.001), and inversely with log transformed AUC(0–tlast) (p < 0.001). In conclusion, HBW patients had lower levels of Clop-AM, and higher platelet reactivity and rates of HPR than LBW subjects, contributing to their suboptimal response to clopidogrel. 相似文献
34.
Bhagavathi A Narayanan Bandaru S Reddy Maarten C Bosland Dominick Nargi Lori Horton Carla Randolph Narayanan K Narayanan 《Clinical cancer research》2007,13(19):5965-5973
PURPOSE: Nonsteroidal anti-inflammatory drugs mediate anticancer effects by modulating cyclooxygenase-2 (COX-2)-dependent and/or COX-2-independent mechanism(s); however, the toxicity issue is a concern with single agents at higher doses. In this study, we determined the combined effect of celecoxib, a COX-2 inhibitor, along with exisulind (sulindac sulfone/Aptosyn) at low doses in prostate cancer. EXPERIMENTAL DESIGN: We used a sequential regimen of N-methyl-N-nitrosourea + testosterone to induce prostate cancer in Wistar-Unilever rats. Following carcinogen treatment, celecoxib and exisulind individually and their combination at low doses were given in NIH-07 diet for 52 weeks. We determined the incidence of prostatic intraepithelial neoplasia, adenocarcinomas, rate of tumor cell proliferation, and apoptosis. Immunohistochemical and Western blot analysis were done to determine COX-2, epidermal growth factor receptor (EGFR), Akt, androgen receptor, and cyclin D1 expression. Serum prostaglandin E2 and tumor necrosis factor-alpha levels were determined using enzyme immunoassay/ELISA assays. RESULTS: The rats that received celecoxib in combination with exisulind at low doses showed a significant decrease in prostatic intraepithelial neoplasia and adenocarcinomas as well as an enhanced rate of apoptosis. An overall decrease in COX-2, EGFR, Akt, androgen receptor, and cyclin D1 expression was found associated with tumor growth inhibition. Reduced serum levels of COX-2 protein, prostaglandin E2, and tumor necrosis factor-alpha indicated anti-inflammatory effects. A strong inhibition of total and phosphorylated form of EGFR (Tyr(992) and Tyr(845)) and Akt (Ser(473)) was significant in rats given with these agents in combination. CONCLUSIONS: In this study, we show for the first time that the combination of celecoxib with exisulind at low doses could prevent prostate carcinogenesis by altering key molecular events. 相似文献
35.
S Rotmensch J S Luo J A Nores M S Dimaio J C Hobbins 《American journal of obstetrics and gynecology》1992,166(2):591-592
Whether karyotyping is indicated in a fetus with choroid plexus cysts who is otherwise structurally normal is still controversial. Many authors have suggested basing the decision on cyst size, bilaterality, persistence with advancing gestational age, and association with other anomalies. We report a case of large bilateral choroid plexus cysts in a fetus with trisomy 21 who had no evidence of congenital anomalies or ultrasonographic signs of Down syndrome. Cyst sizes diminished by half over a 3-week period of follow-up. It appears that diminishing size alone should not be considered sufficient reassurance about the normality of the fetal karyotype. A similar case has been previously reported, and it is conceivable that choroid plexus cysts are associated not only with trisomy 18 but also with trisomy 21. 相似文献
36.
A 14 year old boy with Crohn's disease of the small bowel had a seven year history of growth failure and severe dystrophy. This case demonstrates the significance of growth failure, catch-up growth and intestinal obstruction for children with Crohn's disease. 相似文献
37.
P Laudenbach A Deboise J Quillard Y Glon A Dimaio D Doyon 《Revue de stomatologie et de chirurgie maxillo-faciale》1987,88(4):228-234
A recent publication noted the apparent lack of serious complications of dilatation of salivary canals, based on a review of 16 cases. This is contested by the report of three cases of dilatation of Stensen's duct complicated by lithiasis and stenosis, with associated canalar pseudo-cysts. Surgical excision was required and allowed study of histopathology of this affection. 相似文献
38.
Background:This study illustrates our experience in laparoscopic Roux-en-Y gastric bypass (LRYGBP) using a new technique for
creating the gastrojejunostomy. Methods: Between April and November 1999, 28 patients underwent LRYGBP. In the first 10 patients
the transoral route with endoscopic guidance was utilized for placement of the anvil in the gastric pouch. A new totally intra-peritoneal
approach was utilized in the next 18 patients, avoiding the transoral route. Results:There were 23 women and 5 men with an
average age of 36 years (range 24-51). The mean BMI was 47, with range 41-64. Of the patients, 82% had one or more associated
co-morbid conditions (hypertension, diabetes, sleep apnea, arthritis). Average operative time in the first 10 patients using
the trans-oral route with endoscopic guidance was 340 minutes (range 240-390 min). The next 18 patients underwent totally
intra-peritoneal anvil placement with a 240-minute average operating time (range 150-310 min). There were no open conversions
or mortalities.There were 4 complications, including 2 wound infections, one urinary tract infection, and one intra-abdominal
abscess. The two wound infections occurred in the first 10 patients that underwent trans-oral introduction of the anvil. Conclusions:
LRYGBP was a safe and feasible operation. We believe that our technique is easily reproducible, avoiding the trans-oral route
for introducing the anvil. This technique may also decrease operative time and possibly the incidence of wound infections,
although we are still in the learning curve and final conclusions cannot be made. 相似文献
39.
Programming of Cells for Death under Defined Experimental Conditions: Relevance to the Tumor Problem 下载免费PDF全文
Dominick V. Basile Henry N. Wood Armin C. Braun 《Proceedings of the National Academy of Sciences of the United States of America》1973,70(11):3055-3059
An attempt was made in this study to determine more precisely the nature of the factors that are involved in the programming of cells for a form of terminal cellular differentiation that results in death. These studies demonstrated that both the cytokinesins, which are potent inhibitors of plant and animal adenosine 3':5'-cyclic monophosphate phosphodiesterases, and 8-bromoadenosine 3':5'-cyclic monophosphate, which is a stable, biologically active form of adenosine 3':5'-cyclic monophosphate, are highly effective in encouraging differentiation of parenchyma cells into tracheary elements with accompanying death. Since adenosine 3':5'-cyclic monophosphate and theophylline when used together were also effective, the results reported here suggest that adenosine 3':5'-cyclic monophosphate is somehow importantly involved in the conversion of parenchyma cells into tracheary elements in this system. The possible significance to the tumor problem generally of the programming of cells for terminal differentiation, with or without resulting death, is discussed. 相似文献
40.
This study concentrates on methadone dosage as a critical factor influencing abuse of other psychoactive drugs (including alcohol) by patients maintained on methadone. The study population were patients who remained on methadone for at least two years. The effects of dosage level on a group of 46 patients (low dosage n=27, ×= 48.32; high dosage n = 19, ×= 86.43) is reported. Significant increases (p < 0.01) were found in the abuse of barbiturates, ataractics, and alcohol for the low dosage group. Dosage level had no significant relationship with heroin and amphetamine abuse. These results suggest that higher doses of methadone may provide the patients with a generalized central nervous system depressive effect. 相似文献