The effect of initial teaching on evaluation of left ventricular volumes by cardiovascular magnetic resonance imaging: comparison between complete and intermediate beginners and experienced observers.

Background: High reproducibility and low intra- and interobserver variability are important strengths of cardiac magnetic resonance (CMR). In clinical practice a significant learning curve may however be observed. Basic CMR courses offer an average of 1.

Prenatal Care Adherence and Neonatal Intensive Care Unit Admission or Stillbirth among Women with Gestational and Preexisting Diabetes Mellitus.

Objective:  To determine if there was an association between prenatal care adherence and neonatal intensive care unit (NICU) admission or stillbirth, and adverse perinatal outcomes in women with preexisting diabetes mellitus (DM) and gestational DM (GDM).

Materials And Methods:  This is a retrospective cohort study among women with DM and GDM at a Diabetes in Pregnancy Program at an academic institution between 2006 and 2014. Adherence with prenatal care was the percentage of prenatal appointments attended divided by those scheduled.

Reverse shoulder arthroplasty in patients with os acromiale.

Background: Os acromiale has been reported in up to 15% of the general population. Reverse total shoulder arthroplasty (RTSA) increases deltoid tension, which could potentially lead to excessive stress on a pre-existent os acromiale. The purpose of this study was to determine the outcome and complications of primary RTSA in patients with radiographic evidence of an os acromiale.

Detector-Independent Verification of Quantum Light.

We introduce a method for the verification of nonclassical light which is independent of the complex interaction between the generated light and the material of the detectors. This is accomplished by means of a multiplexing arrangement. Its theoretical description yields that the coincidence statistics of this measurement layout is a mixture of multinomial distributions for any classical light field and any type of detector.

Complications in reverse shoulder arthroplasty.

The reported rate of complications of reverse shoulder arthroplasty (RSA) seems to be higher than the complication rate of anatomical total shoulder arthroplasty.The reported overall complication rate of primary RSA is approximately 15%; when RSA is used in the revision setting, the complication rate may approach 40%.The most common complications of RSA include instability, infection, notching, loosening, nerve injury, acromial and scapular spine fractures, intra-operative fractures and component disengagement.

Long-term outcomes of cemented cementless humeral components in arthroplasty of the shoulder: a propensity score-matched analysis.

Aims: In the initial development of total shoulder arthroplasty (TSA), the humeral component was usually fixed with cement. Cementless components were subsequently introduced. The aim of this study was to compare the long-term outcome of cemented and cementless humeral components in arthroplasty of the shoulder.

Cerclage Use: A Review of 3 National Guidelines.

Importance: Preterm birth is a major contributor to perinatal morbidity and mortality. The most common intervention performed to improve perinatal outcomes for a woman experiencing cervical dilation in the second trimester without signs or symptoms of preterm labor is the cerclage.

Objective: We sought to review and compare available national guidelines on cerclage use.

The hospital cost of two-stage reimplantation for deep infection after shoulder arthroplasty.

Background: The cost of treating infection after hip and knee arthroplasty is well documented in the literature. The purpose of this study was to determine the cost of two-stage reimplantation for deep infection after shoulder arthroplasty.

Methods: Between 2003 and 2012, 57 shoulders (56 patients) underwent a two-stage reimplantation for deep periprosthetic shoulder infection; implants placed at reimplantation included anatomic total shoulder arthroplasty (a-TSA) in 58%, reverse total shoulder arthroplasty (r-TSA) in 40%, and hemiarthroplasty (HA) in 2%.

Structural studies of the endogenous spliceosome - The supraspliceosome.

Pre-mRNA splicing is executed in mammalian cell nuclei within a huge (21MDa) and highly dynamic molecular machine - the supraspliceosome - that individually package pre-mRNA transcripts of different sizes and number of introns into complexes of a unique structure, indicating their universal nature. Detailed structural analysis of this huge and complex structure requires a stepwise approach using hybrid methods. Structural studies of the supraspliceosome by room temperature electron tomography, cryo-electron tomography, and scanning transmission electron microscope mass measurements revealed that it is composed of four native spliceosomes, each resembling an in vitro assembled spliceosome, which are connected by the pre-mRNA.

Radiographs and computed tomography scans show similar observer agreement when classifying glenoid morphology in glenohumeral arthritis.

Background: Glenohumeral subluxation and glenoid morphology are commonly evaluated in primary osteoarthritis by use of the Walch classification. The reliability of this classification system has been analyzed only by computed tomography (CT). The purpose of this study was to determine the reliability of plain axillary radiographs compared with CT scans.

Glenoid bone grafting in primary reverse total shoulder arthroplasty.

Background: Severe glenoid bone loss remains a challenge in patients requiring shoulder arthroplasty and may necessitate glenoid bone grafting. The purpose of this study was to determine results, complications, and rates of failure of glenoid bone grafting in primary reverse shoulder arthroplasty.

Methods: Forty-one shoulders that underwent primary reverse arthroplasty between 2006 and 2013 with a minimum follow-up of 2 years (mean, 2.

Reverse Shoulder Arthroplasty in Patients With Amputation or Paralysis of the Contralateral Upper Extremity (One-Arm Patients).

Background: Theoretically, patients with only one functional arm secondary to contralateral amputation or paralysis will subject their only functional upper extremity to increased loads. This could become an issue after reverse shoulder arthroplasty (RSA). However, there are no reported data on the implant survival or function for patients with a nonfunctional contralateral upper extremity.

Shoulder arthroplasty for locked anterior shoulder dislocation: a role for the reversed design.

Introduction: Locked anterior shoulder dislocation (LASD) is an uncommon condition associated with bone, articular cartilage, and soft tissue damage. In selected cases, shoulder arthroplasty (SA) may be the best treatment. The purpose of this study was to assess outcomes of SA for LASD.

The role age plays in the outcomes and complications of shoulder arthroplasty.

Background: This investigation used age as a continuous variable to estimate implant survival and the risk of complications.

Methods: Prospectively collected data were used to analyze 5494 consecutive shoulder arthroplasties performed from 1970 to 2012. Patients were a mean age of 67 years.

Use of a shorter humeral stem in revision reverse shoulder arthroplasty.

Background: The purpose of this study was to examine the outcomes of revision reverse arthroplasty using short bone-preserving humeral components in revising a long-stemmed component.

Methods: During a 7-year period, 39 patients who underwent revision reverse shoulder arthroplasty using the long to short humeral component technique were included. The mean age was 72 years.

Reversible DNA micro-patterning using the fluorous effect.

We describe a new method for the immobilisation of DNA into defined patterns with sub-micron resolution, using the fluorous effect. The method is fully reversible via a simple solvent wash, allowing the patterning, regeneration and re-patterning of surfaces with no degradation in binding efficiency following multiple removal/attachment cycles of different DNA sequences.

Comparison of bacterial 16S rRNA variable regions for microbiome surveys of ticks.

Ticks vector diverse pathogenic bacteria that are important to identify in public health and veterinary contexts. Technological advances in high throughput sequencing have given an unprecedented opportunity to comprehensively characterize bacterial associates of ticks, but recent studies have used different 16S rRNA variable regions and sequence read lengths with little consideration of whether they reveal the same bacterial diversity. We compare the effectiveness of bacterial surveys using three library preparations across nine 16S variable regions and a set of 12 tick specimens (Acari: Ixodidae).

Cement-within-cement technique in revision reverse shoulder arthroplasty.

Background: The purpose of this study was to determine the complications and results of cement-within cement-humeral fixation in revision reverse shoulder arthroplasty.

Methods: In 38 shoulders, a cemented humeral component was revised to a cemented reverse humeral component using a cement-within-cement technique. The mean follow-up time was 3.

Housing Assistance Programs and Adult Health in the United States.

Objectives: To examine whether access to housing assistance is associated with better health among low-income adults.

Methods: We used National Health Interview Survey data (1999-2012) linked to US Department of Housing and Urban Development (HUD) administrative records (1999-2014) to examine differences in reported fair or poor health and psychological distress. We used multivariable models to compare those currently receiving HUD housing assistance (public housing, housing choice vouchers, and multifamily housing) with those who will receive housing assistance within 2 years (the average duration of HUD waitlists) to account for selection into HUD assistance.

Survival of the pegged glenoid component in shoulder arthroplasty: part II.

Background: Loosening of the glenoid component is a primary reason for failure of an anatomic shoulder arthroplasty. Pegged glenoids were designed in an effort to outperform keeled components. This study evaluated the midterm clinical and radiographic survival of a single implant design with implantation of an in-line pegged glenoid component and identified risk factors for radiographic loosening and clinical failure.

Introductory Emergency Medicine Clinical Skills Course: A Daylong Course Introducing Preclinical Medical Students to the Role of First Responders.

Introduction: A complete medical school curriculum must include an introduction to first aid; the management of airway, breathing, and circulation; and basic medical emergencies. The September 11, 2001, terrorist attacks in New York underscored the need for such training for US students even in their preclinical years. During that tragedy, many Weill Cornell Medical College (WCMC) preclinical students were eager to volunteer at Ground Zero and in the emergency department, yet it was clear they were not prepared for even basic medical emergencies this early in their training.

Optimizing follow-up after anatomic total shoulder arthroplasty.

Background: With increases in both total shoulder arthroplasty (TSA) volumes and patient life expectancies, the number of patients requiring follow-up after shoulder arthroplasty continues to grow exponentially. The purpose of this study is to establish a data-based follow-up schedule minimizing unnecessary patient and health care system costs without sacrificing patient care.

Methods: Between January 1975 and January 2013, 2786 consecutive anatomic TSAs were performed at our institution.

Plication of the posterior capsule for intraoperative posterior instability during anatomic total shoulder arthroplasty.

Background: Restoration of soft tissue balance for intraoperative posterior instability during anatomic total shoulder arthroplasty (TSA) is particularly difficult. The effectiveness of posterior capsular plication (PCP) in restoring soft tissue balance is largely unknown. The purpose of this study was to report the outcomes, complications, and reoperations of primary TSA in which a PCP was performed to correct excessive intraoperative posterior subluxation.

Is previous nonarthroplasty surgery a risk factor for periprosthetic infection in primary shoulder arthroplasty?

Background: The purpose of this study was to determine the risk of periprosthetic infection after primary shoulder arthroplasty (SA) in patients undergoing previous nonarthroplasty shoulder surgery compared with those without previous surgery.

Materials And Methods: All patients undergoing primary SA at our institution between 1970 and 2012 were included in this study. The cohort consisted of 4577 patients treated with 2890 total SAs, 1233 hemiarthroplasties, and 454 reverse SAs; 813 (18%) patients had undergone prior nonarthroplasty shoulder surgery on the operative side.