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https://www.readbyqxmd.com/read/27923169/primary-stability-of-unicompartmental-knee-arthroplasty-under-dynamic-flexion-movement-in-human-femora
#1
Thomas M Grupp, Melanie Holderied, Matthias F Pietschmann, Christian Schröder, Angélica P Islas Padilla, Christoph Schilling, Volkmar Jansson, Peter E Müller
BACKGROUND: The objective of our study was to evaluate the impact of a trabecular stem fixation versus a cortical teeth fixation technique on the primary stability of cemented unicompartmental femoral components under dynamic flexion movement loading conditions in human femora. METHODS: Ten fresh-frozen human knees of a mean donor age of 73.9years were used to perform medial unicompartmental knee arthroplasty under a less invasive parapatellar surgical approach...
November 26, 2016: Clinical Biomechanics
https://www.readbyqxmd.com/read/27922983/current-construct-options-for-revision-of-large-acetabular-defects-a-systematic-review
#2
Marieke Baauw, Miranda L van Hooff, Maarten Spruit
BACKGROUND: Many treatment options are available for the revision of large acetabular defects. Debate continues as to which technique is most effective. METHODS: A systematic review was performed according to the Meta-analysis of Observational Studies in Epidemiology (MOOSE) guidelines to evaluate the effectiveness of interventions for large acetabular defects. Quality assessment was performed next with use of 8 items of the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) checklist for reports of observational studies...
November 8, 2016: JBJS Reviews
https://www.readbyqxmd.com/read/27922979/a-comparison-of-thermal-plasma-energy-versus-argon-beam-coagulator-induced-intestinal-injury-after-vaporization-in-a-porcine-model
#3
Edward J Tanner, Erica Dun, Yukio Sonoda, Alexander B Olawaiye, Dennis S Chi
OBJECTIVES: Complete cytoreduction of ovarian cancer often requires excision or ablation of bowel serosa implants. Both argon beam coagulator (ABC) and thermal plasma energy (TPE) (PlasmaJet; PlasmaSurgical, Roswell, Ga) have been used to ablate bowel serosa implants. Our objective was to identify comparable power settings as well as determine the rate of bowel perforation, depth of thermal injury, and extent of inflammatory response with ABC versus TPE in a porcine model. MATERIALS AND METHODS: Nine pigs underwent vaporization of small bowel and colon serosa according to assigned treatment group (TPE vs ABC) and settings (ABC: 30, 50, and 70 W; TPE: Cut 10U, 20U, and 30U and Coagulation 10U, 20U, and 30U)...
December 3, 2016: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/27922962/retention-and-mechanical-behavior-of-attachment-systems-for-implant-retained-auricular-prostheses
#4
Eder Alberto Sigua-Rodriguez, Douglas Rangel Goulart, Zarina Tatia Santos, Natalia Alvarez-Pinzon, Sergio Olate, José Ricardo de Albergaria-Barbosa
OBJECTIVE: Auricular prostheses are artificial substitutes for facial defects. The retention of these has often been a problem. This study aimed to evaluate the mechanical behavior of 3 retained auricular prosthetic connections when submitted to a mechanical cycling test. MATERIALS AND METHODS: Twelve samples with installed implants were obtained and divided into 3 groups according to their retention system with 4 samples in each group. I: bar-clip system; II: magnet system; and III: ball/o-ring system...
December 5, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27922945/staphylococcal-biofilms-and-immune-polarization-during-prosthetic-joint-infection
#5
Casey M Gries, Tammy Kielian
Staphylococcal species are a leading cause of community- and nosocomial-acquired infections, where the placement of foreign materials increases infection risk. Indwelling medical devices and prosthetic implants are targets for staphylococcal cell adherence and biofilm formation. Biofilm products actively suppress proinflammatory microbicidal responses, as evident by macrophage polarization toward an anti-inflammatory phenotype and the recruitment of myeloid-derived suppressor cells. With the rise in prosthetic hip and knee arthroplasty procedures, together with the recalcitrance of biofilm infections to antibiotic therapy, it is imperative to better understand the mechanism of crosstalk between biofilm-associated bacteria and host immune cells...
December 5, 2016: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/27922894/antimicrobial-prophylaxis-practice-patterns-in-breast-augmentation-a-national-survey-of-current-practice
#6
Karan Chopra, Arvind U Gowda, Colton H L McNichols, Emile N Brown, Sheri Slezak, Yvonne Rasko
BACKGROUND: Breast augmentation is one of the most commonly performed aesthetic surgery procedures worldwide. Bacterial contamination is of paramount concern due to its role in biofilm formation and capsular contracture. Plastic surgeons have adopted a variety of perioperative interventions in efforts to reduce implant contamination, however definitive evidence supporting these practices is lacking. OBJECTIVE: The goal of this study was to assess current practice patterns aimed at reducing implant-related infections in breast augmentation and comparing them to current evidence-based medicine recommendations...
December 5, 2016: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/27922890/tolerability-and-biological-effects-of-long-acting-octreotide-in-patients-with-continuous-flow-left-ventricular-assist-devices
#7
Rajiv Malhotra, Keyur B Shah, Raveen Chawla, Sammy Pedram, Melissa C Smallfield, Anna G Priday, Christine T DeWilde, Donald F Brophy
Patients with implanted continuous, non-pulsatile, left ventricular assist devices (LVADs) have increased occurrence of gastrointestinal bleeding (GIB). While the pathophysiology is multifactorial, there are few treatments beyond supportive care. Octreotide acetate is a somatostatin analog that reduces GIB in various patient populations. However, there are sparse case-series that suggest octreotide acetate may reduce GIB in LVAD patients. This 10 patient, 28-week Phase I study evaluated the safety and tolerability of octreotide acetate long-acting release (LAR) 20 mg depot injection every four weeks until week 16 following LVAD placement...
December 2, 2016: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/27922888/experience-with-extracorporeal-life-support-for-cardiogenic-shock-in-the-older-population-over-70-years-of-age
#8
Margaux Pontailler, Pierre Demondion, Guillaume Lebreton, Jean-Louis Golmard, Pascal Leprince
The both aims of this single-centre, retrospective study were to analyse the outcomes and to identify the independent predictors of 30-day and long-term mortality in case of cardiopulmonary resuscitation requiring extracorporeal life support (ECLS) in the elderly.From October 2004 to May 2014, 163 patients with a mean age of 75.5 years [range 70-91] required veno-arterial ECLS. The main indication was post-cardiotomy cardiogenic shock (79.6%). ECLS duration averaged 5.6 ± 4.3 days. Thirty-day mortality was 72% (n=117) and follow-up survival rate was 14...
December 2, 2016: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/27922885/ventricular-assist-device-implantation-configurations-impact-overall-mechanical-circulatory-support-system-thrombogenic-potential
#9
Wei-Che Chiu, Yared Alemu, Allison J McLarty, Shmuel Einav, Marvin J Slepian, Danny Bluestein
Ventricular assist devices (VAD) became in recent years the standard of care therapy for advanced heart failure with hemodynamic compromise. With the steadily growing population of device recipients, various post-implant complications have been reported, mostly associated with the hyper-shear generated by VADs that enhance their thrombogenicity by activating platelets. While VAD design optimization can significantly improve its thromboresistance, the implanted VAD need to be evaluated as part of a system. Several clinical studies indicated that variability in implantation configurations may contribute to the overall system thrombogenicity...
December 2, 2016: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/27922883/infection-oxidative-stress-and-changes-in-circulating-regulatory-t-cells-of-heart-failure-patients-supported-by-continuous-flow-ventricular-assist-devices
#10
Nandan K Mondal, Michael A Sobieski, Si M Pham, Bartley P Griffith, Steven C Koenig, Mark S Slaughter, Zhongjun J Wu
The objective of this study was to investigate the changes in oxidative stress (OS) and circulating regulatory T cells (Tregs) of the immune system in CF-VAD patients with or without infection. We recruited 16 CF-VAD patients (5 with infection and 11 without infection) and 7 healthy volunteers. Generation of reactive oxygen species (ROS) from lymphocytes, superoxide dismutase (SOD) in erythrocyte, total antioxidant capacity (TAC) and oxidized low density lipoprotein (oxLDL) in plasma were measured. Circulating Tregs were evaluated by flow cytometry...
December 2, 2016: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/27922811/the-number-of-recalled-leads-is-highly-predictive-of-lead-failure-results-from-the-pacemaker-and-implantable-defibrillator-leads-survival-study-paidless
#11
Daniel J Kersten, Jinju Yi, Alyssa M Feldman, Kunal Brahmbhatt, Wilbur J Asheld, Joseph Germano, Shahidul Islam, Todd J Cohen
OBJECTIVES: The purpose of this study was to determine if implantation of multiple recalled defibrillator leads is associated with an increased risk of lead failure. BACKGROUND: The authors of the Pacemaker and Implantable Defibrillator Leads Survival Study ("PAIDLESS") have previously reported a relationship between recalled lead status, lead failure, and patient mortality. This substudy analyzes the relationship in a smaller subset of patients who received more than one recalled lead...
December 2016: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/27922524/resolution-of-intractable-ventricular-tachycardia-after-surgical-repositioning-of-a-heartmate-ii-inflow-cannula
#12
Andre Y Son, Alex Reyentovich, Stephen Pan, Abe DeAnda, Leora B Balsam
Ventricular arrhythmias are common after left ventricular assist device implantation. Malposition of the inflow cannula is one of the few etiologies with a mechanically correctable defect. We present a case of intractable ventricular tachycardia that resolved after surgical repositioning of a HeartMate II inflow cannula. The diagnosis and management of this case demonstrate the utility of imaging studies for detecting inflow cannula malposition and the efficacy of inflow cannula repositioning for treatment.
December 2, 2016: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/27922487/breast-augmentation-combining-fat-injection-and-breast-implants-in-patients-with-atrophied-breasts
#13
Burhan Özalp, Mustafa Aydinol
Breast augmentation is a challenging issue in atrophied breasts related to breastfeeding. Here, we describe a modification combining breast implants and fat grafting to obtain a successful outcome without implant edge visibility and palpability.Thirty-four women with atrophied breasts underwent breast augmentation over a 6-year period. The breast implants were placed in the subglandular plane to obtain optimal filling and expansion of atrophied breast tissue. Autologous fat grafting was performed above the inframammary sulcus to prevent implant visibility and palpability due to insufficient soft tissue coverage...
December 2, 2016: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/27922469/sports-and-driving-with-an-implantable-cardioverter-defibrillator
#14
Aileen M Ferrick, Kevin J Ferrick
Many patients with implantable cardioverter-defibrillators (ICD) want to participate in sports and many need or wish to operate a personal motor vehicle. Healthcare providers need to advise patients regarding restrictions related to these activities in the context of the clinical indication for the ICD. Ethical considerations need to be considered when advising ICD patients of restrictions to reduce risk of injury to themselves and to others when participating in either sports or driving. Shared decision-making is necessary to have ICD patients understand and comply with recommended restrictions...
January 2017: Cardiology in Review
https://www.readbyqxmd.com/read/27922468/optimal-implantable-cardioverter-defibrillator-programming
#15
Bindi K Shah
Optimal programming of implantable cardioverter defibrillators (ICDs) is essential to appropriately treat ventricular tachyarrhythmias and to avoid unnecessary and inappropriate shocks. There have been a series of large clinical trials evaluating tailored programming of ICDs. We reviewed the clinical trials evaluating ICD therapies and detection, and the consensus statement on ICD programming. In doing so, we found that prolonged ICD detection times, higher rate cutoffs, and antitachycardia pacing (ATP) programming decreases inappropriate and painful therapies in a primary prevention population...
January 2017: Cardiology in Review
https://www.readbyqxmd.com/read/27922467/lead-extraction-considerations-for-the-referring-cardiologist
#16
Ayman A Hussein, Bruce L Wilkoff
The population of patients with cardiac implantable electronic devices (CIEDs) continues to grow due to increasing indications in an aging population and breakthroughs in both the medical and the surgical care of patients with heart disease. As a result, there has been a growing need for device and lead extractions due to the growing population of patients with CIEDs and the subsequent need for system upgrades or revisions because of complications, infections, and lead advisory alerts.
January 2017: Cardiology in Review
https://www.readbyqxmd.com/read/27922466/smartphone-based-electrocardiographic-and-cardiac-implantable-electronic-device-monitoring
#17
Suneet Mittal
The field of arrhythmia monitoring is changing rapidly. The rapid advent of technology in combination with marked improvements in cellular communication and an increased desire by patients to be actively engaged in their care has ushered in a new era of clinical care. Today, physicians need to think about their patients outside the traditional in-office setting. Two technologies that embody this changing landscape are smartphone-based electrocardiographic (ECG) monitors and remote monitoring of cardiac implantable electronic devices (CIEDs)...
January 2017: Cardiology in Review
https://www.readbyqxmd.com/read/27922455/primary-stability-of-cylindrical-and-conical-dental-implants-in-relation-to-insertion-torque-a-comparative-ex-vivo-evaluation
#18
Henning Staedt, Victor Palarie, Arne Staedt, Jens M Wolf, Karl Martin Lehmann, Peter Ottl, Peer W Kämmerer
INTRODUCTION: The aim of this ex vivo study was to investigate the influence of different insertion torques on primary stability of a conical and a cylindrical implant system. MATERIALS AND METHODS: Thirty-two dental implants (Astra Tech OsseoSpeed 5.0 S × 11 mm cylindrical [n = 16] and 5.0 × 11 mm conical [n = 16]) were inserted with 20, 30, 40, and 45 N·cm into fresh porcine bone of mixed trabecular-cortical quality. Before insertion, bone quality was assessed via cone beam tomography...
December 2, 2016: Implant Dentistry
https://www.readbyqxmd.com/read/27922289/assessing-the-risk-of-clinical-and-pathologic-factors-for-relapse-of-borderline-ovarian-tumours
#19
Chung Chang, Jiabin Chen, Wei-An Chen, Szu-Pei Ho, Wen Shiung Liou, An Jen Chiang
The objective of this study was to identify clinical and pathologic factors that are significant to relapse in borderline ovarian tumours (BOT). All patients with BOTs from 1997 to 2012 in our institute were identified. 115 patients were included in the study. The Cox proportional hazards model was used to identify significant factors. The median age was 42 years (range 14-85 years). The majority of the patients were at FIGO stage I (88.7%), and most of the patients had mucinous histology (66.1%), reflecting the predominant distribution of mucinous BOTs in East Asia...
December 6, 2016: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/27922056/identification-and-functional-analysis-of-long-intergenic-noncoding-rna-genes-in-porcine-pre-implantation-embryonic-development
#20
Jingyu Li, Zhengling Gao, Xingyu Wang, Hongbo Liu, Yan Zhang, Zhonghua Liu
Genome-wide transcriptome studies have identified thousands of long intergenic noncoding RNAs (lincRNAs), some of which play important roles in pre-implantation embryonic development (PED). Pig is an ideal model for reproduction, however, porcine lincRNAs are still poorly characterized and it is unknown if they are associated with porcine PED. Here we reconstructed 195,531 transcripts in 122,007 loci, and identified 7,618 novel lincRNAs from 4,776 loci based on published RNA-seq data. These lincRNAs show low exon number, short length, low expression level, tissue-specific expression and cis-acting, which is consistent with previous reports in other species...
December 6, 2016: Scientific Reports
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