Left ventricular lead implantation in an unusual anatomy of the proximal coronary sinus

A 62-year-old man with Class III heart failure and left bundle branch block underwent cardiac resynchronization therapy. Because prior implantation attempts from the left side were unsuccessful, the right side approach was attempted. However, it was still impossible to advance the pre-shaped sheaths into the distal coronary sinus (CS) because the CS was abnormal with a posterior vertical take off followed by a sharp sigmoid curve before the AV groove. Ultimately, a straight sheath was adjusted to fit the sigmoid curve with the guidance of an electrophysiologic catheter and a left ventricular lead was then passed into the anterolateral vein. There was no financial support for this study.     

Assessment of clinical nurse specialists in rheumatology using an OSCE

Objective: To introduce a new method of assessment; an observed structured clinical examination (OSCE) into a postgraduate course for rheumatology clinical nurse specialists. Method: The OSCE was introduced into a physical assessment module, which focused on the nurses' ability to perform an examination of patients' shoulders, knees and hands. A modified blueprinting exercise was used to ensure adequate sampling of the different components of the syllabus. This resulted in five active stations and one rest station. The active stations included history-taking, physical examination of the shoulder, knee and hand complexes and multidisciplinary management plans. To enhance authenticity real, rather than simulated, patients were used where practical. Results: All 11 students passed all stations, the lowest score related to history-taking and the highest score related to devising a management plan. All 11 students rated the OSCE a worthwhile experience reflecting the learning outcomes of the module and recommended that the OSCE should be used to assess the next cohort of students. Eight students found the OSCE too ‘anxiety-provoking’ and did not want this method of assessment to be used in other modules. All examiners felt this mode of assessment was more valid than the previous assessment format of a viva on a single patient. Conclusion: This was the first time an OSCE was used in a postgraduate course to assess the physical examination skills of rheumatology nurse specialists. The course faculty, examiners and students found it was a reliable and valid means of assessment. Copyright © 2007 John Wiley & Sons, Ltd.     

Patterns of damage in genomic DNA sequences from a Neandertal

High-throughput direct sequencing techniques have recently opened the possibility to sequence genomes from Pleistocene organisms. Here we analyze DNA sequences determined from a Neandertal, a mammoth, and a cave bear. We show that purines are overrepresented at positions adjacent to the breaks in the ancient DNA, suggesting that depurination has contributed to its degradation. We furthermore show that substitutions resulting from miscoding cytosine residues are vastly overrepresented in the DNA sequences and drastically clustered in the ends of the molecules, whereas other substitutions are rare. We present a model where the observed substitution patterns are used to estimate the rate of deamination of cytosine residues in single- and double-stranded portions of the DNA, the length of single-stranded ends, and the frequency of nicks. The results suggest that reliable genome sequences can be obtained from Pleistocene organisms.     

How we treat: transfusion medicine support of obstetric services

BACKGROUND: Obstetric services depend on the transfusion service (TS) to provide diagnostic testing and blood component therapy for clinical care pathways. STUDY DESIGN AND METHODS: We describe three quality improvement (QI) initiatives implemented to improve TS support of obstetric services. RESULTS: We implemented a pathway for patients requiring an ABO/Rh order for every admission to obstetric services, along with reconciliation of the daily hospital birth manifest and TS umbilical cord log to identify every woman eligible for RhIG. After assessment over 6 months, 21 (1%) of 2041 women lacked an admission ABO/Rh; all subsequently had ABO/Rh determinations. Umbilical cords were missing for eight (0.4%) mothers; four were D? and received RhIG. We developed algorithms for diagnostic blood ordering for patients deemed at “low,”“moderate,” or “high” risk of blood transfusion. A 27% reduction in total diagnostic test volumes and 24% reduction in charges was documented after compared to before implementation. We analyzed the impact of our massive transfusion protocol (MTP) on blood inventory management for 31 (0.25%) women undergoing 12,945 deliveries, representing 11% of 286 MTPs for all clinical services over a 32‐month interval. O? uncrossmatched red blood cells (RBCs) represented 103 (24%) of 421 RBC units issued. Wastage rates of RBCs, plasma, and platelets ordered and issued in the MTPs were 0.7, 16, and 3%, respectively. CONCLUSION: QI initiatives for RhIG prophylaxis, diagnostic blood test ordering, and MTP improve TS support of obstetric services.     

Inferior vena cava filter use as pulmonary embolism prophylaxis in trauma

Venous thromboembolism (VTE) is a significant cause of morbidity and mortality in trauma. What is known regarding VTE prophylaxis has been extrapolated from nontrauma data. Optimal methods of VTE prevention for trauma remain controversial and unknown. Trauma patients are unique and heterogeneous rendering many forms of treatment inappropriate. The most fatal complication of VTE is a pulmonary embolism (PE). There is a long history of protection against PE as vena caval interruption. Inferior vena cava (IVC) filters were designed to protect against PE. Since the approval by the Food and Drug Administration for the use of retrievable filters, trauma care specialists are increasingly choosing this form of prophylaxis. Indications for use, efficacy, and safety of IVC filters remain debated. There is lack of rigor in studies concerning IVC filters. Filters are not without complications. Removal rates for retrievable filters are poor. Nursing is instrumental in IVC filter prophylaxis, efficacy, and safety success.     

Immunoglobulin diversity gene usage predicts unfavorable outcome in a subset of chronic lymphocytic leukemia patients

Survival of patients with B cell chronic lymphocytic leukemia (B-CLL) can be predicted by analysis of mutations in the immunoglobulin heavy chain variable gene (IGHV). Patients without mutations (unmutated [UM]) are at greater risk for disease progression and death than patients with mutations (M). Despite this broad prognostic difference, there remains wide intragroup variation in the clinical outcome of UM patients, especially those with low/intermediate Rai risk disease. We evaluated UM B-CLL patients with low/intermediate Rai risk to determine the relationship between IGHV, IGH diversity (IGHD), and IGH joining (IGHJ) gene usage and time to treatment (TTT). Irrespective of IGHV usage, UM patients whose B-CLL cells expressed the IGHD3-3 gene had a significantly shorter TTT than other UM B-CLL patients, and specifically, use of the IGHD3-3 gene in reading frame 2 (RF2) predicted shorter TTT. As expected, Rai risk was the best single prognostic factor for TTT; however, IGHD usage was also a significant variable for TTT. Therefore, both IGHD gene and IGHD RF usage have prognostic relevance in UM B-CLL patients with low/intermediate Rai risk disease. In addition, these data support the concept that antigen-driven selection of specific Ig receptors plays a role in the clinical course of B-CLL.     

Variability in patterns of BK viral load after renal transplantation

BK virus (BKV) may cause nephropathy in renal transplant patients, resulting in graft dysfunction and possible graft loss. We used a sensitive quantitative BKV assay to monitor plasma BK viral loads in 11 renal transplant patients for periods ranging from 37 to 189 weeks posttransplant. Five patients remained negative for BKV, and 6 developed viremia, including 1 patient with a transient viremia. Of the viremic patients, 2 were diagnosed with BKV nephropathy after increasing serial BK viral loads, prompting a renal biopsy that established the diagnosis. A 3rd patient had high initial BK viral load and biopsy-proven disease that resolved with reduced immunosuppression. Two patients did not develop nephropathy despite persistent viral loads of 10(4) copies/mL. Five of 6 patients experienced viral clearance from the plasma (BK viral load <500 copies/mL), which was associated with their renal function becoming stabilized, and the remaining patient experienced a downward trend in viral load and stable renal function. Thus, the BKV quantitative assay was useful in aiding the diagnosis of BKV nephropathy, monitoring the response to reductions in immunosuppression and identified that some patients can have persistent viremia and still develop stable renal function without specific antiviral therapy.     

Severity of fecal incontinence in community-living elderly in a health maintenance organization

An anonymous survey containing questions about the severity of fecal incontinence (FI)--frequency, amount, and type--and its correlates was distributed to community-living elderly at four managed-care clinics. Completed surveys were received from 1,352 respondents whose mean (+/-standard deviation) age was 75 +/- 6 years and 60% of whom were female. Approximately 19% reported having FI one or more times within the past year. Incontinence that soiled underwear or was of loose or liquid consistency was most common. More frequent FI and a greater amount of FI were significantly associated with loose or liquid stool consistency, defecation urgency, bowel surgery, and chronic health conditions. Therapies aimed at normalizing stool consistency or reducing urgency may be beneficial in lessening FI severity.