Effect of skin antiseptic solutions on the incidence of catheter-related bloodstream infection: a systematic review and network meta-analysis.

BACKGROUND: The most effective skin antiseptic solution to reduce the incidence of catheter-related bloodstream infections (CRBSI) remains unknown. AIM: To compare solutions with different chlorhexidine (CHG)-based concentrations and povidone-iodine (PVI) in adults with a central venous catheter (CVC) or arterial catheter, and identify an association with the incidence of CRBSI. METHODS: This study evaluated randomized controlled trials comparing CHG and PVI antiseptic agents in patients aged ≥18 years with an underlying illness and a CVC or arterial catheter. The primary outcome was CRBSI rate. Network meta-analysis was performed by a frequentist-based approach with multi-variate random effects meta-analysis, and the effect size was expressed as relative risk (RR) with 95% confidence interval (CI). FINDINGS: The search yielded 1511 records, of which five studies (2815 catheters) were included in the network meta-analysis. The risk of CRBSI was significantly lower with 1% CHG-alcohol than with 0.5% CHG-alcohol (RR 0.40, 95% CI 0.16-0.98; high certainty) or 10% PVI-aqueous (RR 0.31, 95% CI 0.15-0.63; high certainty). There was no significant difference in the risk of CRBSI between 1% CHG-alcohol and 2% CHG-aqueous (RR 0.35, 95% CI 0.12-1.04; moderate certainty) or other antiseptic solutions. The hierarchy of efficacy in reducing CRBSI was 1% CHG-alcohol, 0.5% CHG-alcohol, 2% CHG-aqueous and 10% PVI-aqueous. CONCLUSION: Antiseptic agents containing 1% CHG-alcohol were more strongly associated with reduced risk for CRBSI compared with agents containing 0.5% CHG-alcohol or 10% PVI-aqueous.

Epidural analgesia is infrequently used in patients with acute pancreatitis : a retrospective cohort study.

BACKGROUNDS AND AIMS: Epidural analgesia is an option for pain control in patients with acute pancreatitis. The aim of this study is to describe characteristics, morbidity and mortality of patients with acute pancreatitis treated with epidural analgesia. PATIENTS AND METHODS: Data was extracted from a national inpatient database in Japan on patients hospitalized with acute pancreatitis between July 2010 and March 2013. A total of 44,146 patients discharged from acute care hospitals were included in this retrospective cohort study. The patient background, timing and duration of epidural analgesia, complications (epidural hematoma or abscess), surgery (for cholelithiasis / cholecystitis or complications) and mortality were verified. RESULTS: Epidural analgesia was used in 307 patients (0.70 %). The mean age was 64.0 years (standard deviation, 15.4 years) and 116 (37.8%) of the patients were female. The median duration of epidural analgesia was four days (interquartile range, 3-5 days). No patient underwent surgery for epidural hematoma or abscess. Six (2.0%) patients died during hospitalization. Most likely causes of death were pulmonary embolism, multiple organ failure, sepsis, and methicillin-resistant staphylococcus aureus enterocolitis. The responsible physician for 250 of the patients (81.4%) was a gastroenterological surgeon. Epidural analgesia was started on the day of surgery in 278 (90.6%) patients. CONCLUSION: Epidural analgesia is rarely used in patients with acute pancreatitis. None of the patients included in the study required surgery for epidural hematoma or abscess. Further research to evaluate the efficacy and safety of epidural analgesia in patients with acute pancreatitis is warranted.

A quantitative evaluation of fluid leakage around a polyvinyl chloride tapered endotracheal tube cuff using an in-vitro model.

INTRODUCTION: This study was designed to quantitatively evaluate the sealing effect of a polyvinyl chloride tapered endotracheal tube cuff and to compare the tapered cuff with cylindrical endotracheal tube cuffs using an in vitro viscous fluid model. METHODS: Five types of 8.0 mm inner diameter endotracheal tubes (TaperGuard, PortexSacett, PortexSoftseal, Sheridan HVT, Sheridan CF) were fixed in vertically placed 20mm internal diameter acrylic tubes. The cuffs were inflated to 25 mmHg pressure and water was added to the top of the cuff. The amount of water leaking around the cuff at five minutes was measured. Afterwards a viscous fluid was poured above the cuff and the amount of fluid passing around the cuff at five minutes and four hours was measured. Each determination was repeated five times and the data analyzed. RESULTS: The median (range) amount (ml) of dyed water passing around the cuff at 5 minutes was TaperGuard tube 0 (0-0.2), PortexSacett 81.1 (44.6-107.9), PortexSoftseal 95.4 (91.4-113.7), Sheridan HVT 46.5 (32.7-74.6) and Sheridan CF 52.6 (31.9-62.2), suggesting that TaperGuard significantly (P<0.05) reduced fluid leakage. The viscous fluid leakage at 5 minutes was not significantly different among the groups while the amount of leaked viscous fluid at 4 hours was 0.2 (0-1.1) for the TaperGuard, 57.6 (11.9-117.4) for the PortexSacett, 23.2 (13.8-33.0) for the PortexSoftseal, 5.5 (2.7-15.4) for the Sheridan HVT and 5.6 (1.8-7.9) for the Sheridan CF. CONCLUSION: An endotracheal tube with a tapered polyvinyl chloride cuff had significantly less fluid leakage compared to four tubes with cylindrical cuffs.

[Systemic oxygen demand and supply balance during warm heart surgery without blood transfusion].

We investigated systemic oxygen demand and supply balance during warm heart surgery without blood transfusion on 203 patients. The patients aged 63-years on average, for coronary artery bypass surgery, were assigned to extracorporeal circulation (ECC) with flow index of either 2.4 l.min-1.m-2 or 2.6. Hemoglobin concentration (Hb), mixed venous oxygen saturation (SvO2), cardiac index (CI), oxygen delivery (DO2), oxygen consumption (VO2) and oxygen extraction ratio (OER) were determined. The mean operation time was 314 min, and the mean ECC time was 94 min. In both groups, the initiation of ECC decreased Hb to 6.5 g.dl-1, and SVO2 decreased gradually during ECC. In addition, DO2 was lower than the pre-ECC level, which may indicate the shortage of oxygen supply, while VO2 and OER increased during ECC. OER increased by 0.38 in the group with flow index of 2.4, which is higher than 0.35 of the group with 2.6. The discontinuation of ECC improved oxygen profile, mainly due to the increase of Hb and CI. These findings indicate that oxygen demand and supply balance was maintained during normothermic ECC without transfusion, although longer duration o ECC may cause the shortage of oxygen supply. A higher flow may be required during normothermic ECC.