Balloon Pressure (balloon + pressure)

Distribution by Scientific Domains

Selected Abstracts

Simple method for inflating and measuring oesophageal balloon pressure of Sengstaken,Blakemore tube

H.-Y. Han
No abstract is available for this article. [source]

Biofeedback therapy in fecal incontinence and constipation

P. Enck
Abstract, We examine the collected evidence for efficacy of biofeedback therapy (BFT) in incontinence and constipation by means of meta-analysis of randomized controlled trials. PubMed search was performed to identify treatment trials that match quality criteria (adequate control groups, randomization). They were entered into meta-analyses using fixed effect models and computing odds ratio (OR) and 95% confidence interval (CI) of treatment effects. For constipation, eight BFT trials were identified. In four trials, electromyographic (EMG) BFT was compared to non-BFT treatments (laxatives, placebo, sham training and botox injection), while in the remaining four studies EMG BFT was compared to other BFT (balloon pressure, verbal feedback) modes. Meta-analyses revealed superiority of BFT to non-BFT (OR: 3.657; 95% CI: 2.127,6.290, P < 0.001) but equal efficacy of EMG BFT to other BF applications (OR: 1.436; CI: 0.692,3.089; P = 0.319). For fecal incontinence, a total of 11 trials were identified, of which six compared BFT to other treatment options (sensory training, pelvic floor exercise and electrical stimulation) and five compared one BFT option to other modalities of BFT. BFT was equal effective than non-BFT therapy (OR: 1.189, CI: 0.689,2.051, P = 0.535). No difference was found when various modes BFT were compared (OR: 1.278, CI: 0.736,2.220, P = 0.384). Included trials showed a substantial lack of quality and harmonization, e.g. variable endpoints and missing psychological assessment across studies. BFT for pelvic floor dyssynergia shows substantial specific therapeutic effect while BFT for incontinence is still lacking evidence for efficacy. However, in both conditions the mode of BFT seems to play a minor role. [source]

Venous rupture during percutaneous treatment of hemodialysis fistulas and grafts,

John A. Bittl MD
Abstract Objectives: The aim of this study was to analyze the risk and consequences of venous rupture during angioplasty of malfunctioning hemodialysis grafts and fistulas. Background: Venous stenoses in the outflow limb of hemodialysis accesses often require ultra-high balloon pressure for optimal dilatation. Methods: Baseline characteristics and outcomes were analyzed for a consecutive series of patients treated between 1999 and 2008. Results: Venous rupture or perforation occurred in 11 of 1242 (0.9%) procedures. No patient with a rupture or perforation died or required emergency or urgent surgical repair. Two of 11 patients (18.2%) required transfusions, 8 of 11 patients (72.7%) required stenting, and 6 of 8 (75.0%) who needed stenting received covered stents to achieve hemostasis. Rupture led to access thrombosis within 30 days in 9 of 11 cases (82%). Multivariable logistical regression analysis suggested that using a balloon catheter more than 2 mm larger than the diameter of the hemodialysis access or using peripheral cutting balloons increased the risk of rupture or perforation. Conclusions: Rupture or perforation is a rare complication of treatment of malfunctioning hemodialysis grafts and fistulas. The complication may be managed with nonsurgical methods and might be avoided by optimal balloon selection and sizing. 2009 Wiley-Liss, Inc. [source]

Bromine-Catalyzed Aerobic Oxidation of Alcohols

Muhammet Uyanik Dr.
Simple and clean: We have demonstrated that a simple and environmentally benign catalytic system HBr/NaNO2 is very effective for the selective oxidation of alcohols under balloon pressure of O2. Furthermore, the aerobic oxidation of alcohols has been achieved under balloon pressure of air rather that pure O2, with this HBr/NaNO2/HNO3 catalytic system. [source]