Electrical Impedance of Acupuncture Meridians: The Relevance of Subcutaneous Collagenous Bands

Background: The scientific basis for acupuncture meridians is unknown. Past studies have suggested that acupuncture meridians are physiologically characterized by low electrical impedance and anatomically associated with connective tissue planes. We are interested in seeing whether acupuncture meridians are associated with lower electrical impedance and whether ultrasound-derived measures – specifically echogenic collagenous bands- can account for these impedance differences. Methods/Results: In 28 healthy subjects, we assessed electrical impedance of skin and underlying subcutaneous connective tissue using a four needle-electrode approach. The impedances were obtained at 10 kHz and 100 kHz frequencies and at three body sites- upper arm (Large Intestine meridian), thigh (Liver), and lower leg (Bladder). Meridian locations were determined by acupuncturists. Ultrasound images were obtained to characterize the anatomical features at each measured site. We found significantly reduced electrical impedance at the Large Intestine meridian compared to adjacent control for both frequencies. No significant decrease in impedance was found at the Liver or Bladder meridian. Greater subcutaneous echogenic densities were significantly associated with reduced impedances in both within-site (meridian vs. adjacent control) and between-site (arm vs. thigh vs. lower leg) analyses. This relationship remained significant in multivariabl

Individual risk factors for deep infection and compromised fracture healing after intramedullary nailing of tibial shaft fractures: a single centre experience of 480 patients

Introduction Despite modern advances in the treatment of tibial shaft fractures, complications including nonunion, malunion, and infection remain relatively frequent. A better understanding of these injuries and its complications could lead to prevention rather than treatment strategies. A retrospective study was performed to identify risk factors for deep infection and compromised fracture healing after intramedullary nailing (IMN) of tibial shaft fractures. Materials and methods Between January 2000 and January 2012, 480 consecutive patients with 486 tibial shaft fractures were enrolled in the study. Statistical analysis was performed to determine predictors of deep infection and compromised fracture healing. Compromised fracture healing was subdivided in delayed union and nonunion. The following independent variables were selected for analysis: age, sex, smoking, obesity, diabetes, American Society of Anaesthesiologists (ASA) classification, polytrauma, fracture type, open fractures, Gustilo type, primary external fixation (EF), time to nailing (TTN) and reaming. As primary statistical evaluation we performed a univariate analysis, followed by a multiple logistic regression model. Results Univariate regression analysis revealed similar risk factors for delayed union and nonunion, including fracture type, open fractures and Gustilo type. Factors affecting the occurrence of deep infection in this model were primary EF, a prolonged TTN, open fractures and Gustilo type. Multiple logistic regression analysis revealed polytrauma as the single risk factor for nonunion. With respect to delayed union, no risk factors could be identified. In the same statistical model, deep infection was correlated with primary EF. Conclusions The purpose of this study was to evaluate risk factors of poor outcome after IMN of tibial shaft fractures. The univariate regression analysis showed that the nature of complications after tibial shaft nailing could be multifactorial. This was not confirmed in a multiple logistic regression model, which only revealed polytrauma and primary EF as risk factors for nonunion and deep infection, respectively. Future strategies should focus on prevention in high-risk populations such as polytrauma patients treated with EF.publisher: Elsevier articletitle: Individual risk factors for deep infection and compromised fracture healing after intramedullary nailing of tibial shaft fractures: A single centre experience of 480 patients journaltitle: Injury articlelink: http://dx.doi.org/10.1016/j.injury.2014.12.018 content_type: article copyright: Copyright © 2014 Elsevier Ltd. All rights reserved.status: publishe

Parenthood motives, well-being and disclosure among men from couples ready to start treatment with intrauterine insemination using their own sperm or donor sperm

BACKGROUND As pregnancy and childbirth have long been considered women's issues and male infertility has long been surrounded by taboo, limited research has focused on the experience of infertile men. The purpose of this study was to compare male motives for parenthood, male well-being and disclosure patterns concerning the method of conception among men from couples starting treatment with IUI using their own sperm (autologous sperm recipient, ASR) or donor sperm (donor sperm recipient, DSR). METHODS This prospective study included 46 DSR- and 151 ASR-couples. Self-report questionnaires assessing parenthood motives, well-being and disclosure patterns concerning the method of conception were administered to both men and women prior to treatment. Unpaired T-tests and Fisher's exact tests were used to test for significant differences. RESULTS When compared with ASR-men, DSR-men expect more positive effects from parenthood on relationships and feelings of fulfilment, and report less negative effects of infertility on sexuality, but a lower self-image and more guilt. DSR-men plan to disclose the method of conception less frequently and have so far disclosed to a lesser degree than ASR-men. CONCLUSIONS DSR-men feel differently about parenthood and infertility compared with ASR-men, and their higher expectations combined with lower self-esteem need (more) attention during counselling

Percutaneous iliosacral screw fixation after osteoporotic posterior ring fractures of the pelvis reduces pain significantly in elderly patients

Introduction: Osteoporotic posterior ring fractures of the pelvis are common injuries in the elderly, but the treatment of these fractures still remains controversial. Percutaneous iliosacral screw fixation is one surgical option if conservative treatment cannot provide sufficient pain reduction. The aim of this study is to provide short-term results of elderly patients with percutaneous screw fixation. Methods: 30 patients with posterior ring fractures were treated between 12/2009 and 01/2014 with percutaneous iliosacral screw fixation. Patients' mean age was 78.4 years. Concerning short-term outcome, we focused on initial pain level and postoperative pain reduction together with intra-and postoperative complications. Results: The average hospital stay was 23.7 days, with surgical treatment performed after an average of 9.2 days. 90% of our patients were female. All 30 patients had a lower level of pain at discharge compared with admission or immediately prior to surgery. The difference in pain level at admission compared with the pain level upon discharge showed a mean reduction from 6.8 to 1.8 with a statistically significant change (P <= 0.001). 24 of 30 patients had no registered complications, one screw malpositioning with postoperative nerve irritation occurred. Discussion: Conventional percutaneous iliosacral screw fixation is a successful operative treatment for elderly patients with persistent lower back pain after unstable posterior ring fractures of the pelvis. Intra-and postoperative complications are rare, so this treatment can be regarded as a safe procedure. Level of evidence: IV (retrospective study). (C) 2015 Elsevier Ltd. All rights reserved