Integrating nurse practitioners into primary care: policy considerations from a Canadian province.

BACKGROUND: The integration of nurse practitioners (NPs) into primary care health teams has been an object of interest for policy makers seeking to achieve the goals of improving care, increasing access, and lowering cost. The province of Alberta in Canada recently introduced a policy aimed at integrating NPs into existing primary care delivery structures. This qualitative research sought to understand how that policy - the NP Support Program (NPSP) - was viewed by key stakeholders and to draw out policy lessons. METHODS: Fifteen semi-structured interviews with NPs and other stakeholders in Alberta's primary care system were conducted, recorded, transcribed and analyzed using the interpretive description method. RESULTS: Stakeholders predominantly felt the NPSP would not change the status quo of limited practice opportunities and the resulting underutilization of primary care NPs in the province. Participants attributed low levels of NP integration into the primary care system to: 1) financial viability issues that directly impacted NPs, physicians, and primary care networks (PCNs); 2) policy issues related to the NPSP's reliance on PCNs as employers, and a requirement that NPs panel patients; and 3) governance issues in which NPs are not afforded sufficient authority over their role or how the key concept of 'care team' is defined and operationalized. CONCLUSIONS: In general, stakeholders did not see the NPSP as a long-term solution for increasing NP integration into the province's primary care system. Policy adjustments that enable NPs to access funding not only from within but also outside PCNs, and modifications to allow greater NP input into how their role is utilized would likely improve the NPSP's ability to reach its goals.

Quality assessment of the human genome sequence.

As the final sequencing of the human genome has now been completed, we present the results of the largest examination of the quality of the finished DNA sequence. The completed study covers the major contributing sequencing centres and is based on a rigorous combination of laboratory experiments and computational analysis.

The sequence and analysis of duplication-rich human chromosome 16.

Human chromosome 16 features one of the highest levels of segmentally duplicated sequence among the human autosomes. We report here the 78,884,754 base pairs of finished chromosome 16 sequence, representing over 99.9% of its euchromatin. Manual annotation revealed 880 protein-coding genes confirmed by 1,670 aligned transcripts, 19 transfer RNA genes, 341 pseudogenes and three RNA pseudogenes. These genes include metallothionein, cadherin and iroquois gene families, as well as the disease genes for polycystic kidney disease and acute myelomonocytic leukaemia. Several large-scale structural polymorphisms spanning hundreds of kilobase pairs were identified and result in gene content differences among humans. Whereas the segmental duplications of chromosome 16 are enriched in the relatively gene-poor pericentromere of the p arm, some are involved in recent gene duplication and conversion events that are likely to have had an impact on the evolution of primates and human disease susceptibility.

The DNA sequence and comparative analysis of human chromosome 5.

Chromosome 5 is one of the largest human chromosomes and contains numerous intrachromosomal duplications, yet it has one of the lowest gene densities. This is partially explained by numerous gene-poor regions that display a remarkable degree of noncoding conservation with non-mammalian vertebrates, suggesting that they are functionally constrained. In total, we compiled 177.7 million base pairs of highly accurate finished sequence containing 923 manually curated protein-coding genes including the protocadherin and interleukin gene families. We also completely sequenced versions of the large chromosome-5-specific internal duplications. These duplications are very recent evolutionary events and probably have a mechanistic role in human physiological variation, as deletions in these regions are the cause of debilitating disorders including spinal muscular atrophy.

The DNA sequence and biology of human chromosome 19.

Chromosome 19 has the highest gene density of all human chromosomes, more than double the genome-wide average. The large clustered gene families, corresponding high G + C content, CpG islands and density of repetitive DNA indicate a chromosome rich in biological and evolutionary significance. Here we describe 55.8 million base pairs of highly accurate finished sequence representing 99.9% of the euchromatin portion of the chromosome. Manual curation of gene loci reveals 1,461 protein-coding genes and 321 pseudogenes. Among these are genes directly implicated in mendelian disorders, including familial hypercholesterolaemia and insulin-resistant diabetes. Nearly one-quarter of these genes belong to tandemly arranged families, encompassing more than 25% of the chromosome. Comparative analyses show a fascinating picture of conservation and divergence, revealing large blocks of gene orthology with rodents, scattered regions with more recent gene family expansions and deletions, and segments of coding and non-coding conservation with the distant fish species Takifugu.

Re-intervention for occluded iliac vein stents.

Iliac vein stenting has become more frequent with improved diagnostic capabilities of intra-vascular ultrasound (IVUS) for recognizing May-Thurner syndrome, chronic venous insufficiency (CVI) and thrombus. In this manuscript, we discuss the reasons for initial stenting, with long-term outcomes and some of the associated pitfalls. The best techniques for re-intervention when iliac stents become occluded will also be discussed.

Segmental arterial mediolysis and fibromuscular dysplasia: what comes first, the chicken or the egg?

Segmental arterial mediolysis (SAM) is a rare vasculopathy characterized by lysis of the outer media in splanchnic arteries and formation of dissecting pseudoaneurysms that may spontaneously rupture, leading to massive and often fatal intraabdominal hemorrhage. The pathogenesis of SAM is poorly understood. Healed SAM lesions closely resemble fibromuscular dysplasia (FMD), leading some authors to postulate that SAM represents a precursor to FMD despite distinct clinical differences between these two disorders. Herein, we present a 61-year-old woman with fatal SAM who showed histologic features in her aorta suggesting the opposite pathogenetic relationship, with an unclassified "FMD-like" arteriopathy preceding development of SAM.

A unique case of ulnar tunnel syndrome in a bicyclist requiring operative release.

The continued growth of recreational and competitive sports is accompanied by the need for health care providers to recognize and treat conditions in athletes that have been traditionally associated with other occupational injury. This is particularly important when early diagnosis and prompt intervention for prevention and treatment may alter the outcome. We present an interesting case of ulnar tunnel syndrome in a high-performance bicyclist with compressive ulnar neuropathy refractory to nonoperative management but successfully treated with surgical release. We review evaluation, diagnosis, and historical and current treatment algorithms.