Annual Days With a Health Care Encounter for Children and Youth Enrolled in Medicaid: A Multistate Analysis.

OBJECTIVE: To assess the number of days that children experienced a health care encounter and associations between chronic condition types and health care encounters. METHODS: Retrospective analysis of data from 5,082,231 children ages 0 to 18 years enrolled in Medicaid during 2017 in 12 US states contained in the IBM Watson Marketscan Medicaid Database. We counted and categorized enrollees' encounter days, defined as unique days a child had a health care visit, by type of health service. We used International Classification of Disease-10 diagnosis code categories from Agency for Healthcare Research and Quality's Chronic Condition Indicator System to identify chronic mental and physical health conditions. RESULTS: Median (interquartile range [IQR]) annual encounter days was 6 (2-13). Children in the 91st to 98th and ≥99th percentiles for encounter days experienced a median of 49 (IQR 38-70) and 229 (IQR 181, 309) days, respectively; these children accounted for 52.6% of days for the cohort. As encounter days increased from the 25th to >90th percentile, the percentage of children with co-existing mental and physical health conditions increased from <0.1% to 47.4% (P < .001). Outpatient visits accounted for a total of 68.3% and 62.2% of days for children the 91st to 98th and ≥99th percentiles. CONCLUSION: Ten percent of children enrolled in Medicaid averaged health care encounters at least 1 day per week; 1% experienced health care encounters on most weekdays. Further investigation is needed to understand how families perceive frequent health care encounters, including how to facilitate their children's care in the most feasible way.

Access to Services for Children and Youth With Special Health Care Needs and Their Families: Concepts and Considerations for an Integrated Systems Redesign.

Access to services for children and youth with special health care needs (CYSHCN) have typically emphasized coverage, service, timeliness, and capability. Yet families of CYSHCN continue to describe a fragmented health care system with significant unmet needs. For many years, the concept of access to services has focused on the services themselves, rather than starting with the needs of CYSHCN and their families. Meeting these needs should be grounded in health equity, address systemic racism and ableism, and emphasize the life course and journey of those with such needs and their families. In this paper, we start with the simple concept of asking that care is available for CYSHCN regardless of when, where, and how they need it. Access to services is built on relationships instead of a series of transactions. Opportunities for innovation include creating a single point of service entry; determining services based on need instead of diagnosis; and emphasizing service continuity, transition, and a place-based approach. The innovations reimagine access throughout the life course, centering care around a proactive, human-centered system that addresses health and all of its determinants. The landscape of antipoverty investments, cultural humility, workforce changes, technology, and human-centered thought in design have the potential to further transform the conceptual framework to improve access to services for CYSHCN and their families.

A Blueprint for Change: Guiding Principles for a System of Services for Children and Youth With Special Health Care Needs and Their Families.

Children and youth with special health care needs (CYSHCN) and their families continue to face challenges in accessing health care and other services in an integrated, family-centered, evidence-informed, culturally responsive system. More than 12 million, or almost 86%, of CYSHCN ages 1-17 years do not have access to a well-functioning system of services. Further, the inequities experienced by CYSHCN and their families, particularly those in under-resourced communities, highlight the critical need to address social determinants of health and our nation's approach to delivering health care. To advance the system and prioritize well-being and optimal health for CYSHCN, the Health Resources and Services Administration's Maternal and Child Health Bureau, with input from diverse stakeholders, developed a set of core principles and actionable strategies for the field. This article presents principles and strategies in the Blueprint for Change: Guiding Principles for a System of Services for CYSHCN and Their Families (Blueprint for Change), which acknowledges the comprehensive needs of CYSHCN, a changing health care system, and the disparities experienced by many CYSHCN. Four critical areas drive the Blueprint for Change: health equity, family and child well-being and quality of life, access to services, and financing of services. Although discussed separately, these critical areas are inherently interconnected and intend to move the field forward at the community, state, and federal levels. Addressing these critical areas requires a concerted, holistic, and integrated approach that will help us achieve the goal that CYSHCN enjoy a full life from childhood through adulthood and thrive in a system that supports their families and their social, health, and emotional needs, ensuring their dignity, autonomy, independence, and active participation in their communities.

Transition Planning Among US Youth With and Without Special Health Care Needs.

BACKGROUND: Researchers have shown that most youth with special health care needs (YSHCN) are not receiving guidance on planning for health care transition. This study examines current transition planning among US youth with and without special health care needs (SHCN). METHODS: The 2016 National Survey of Children's Health is nationally representative and includes 20 708 youth (12-17 years old). Parents and/or caregivers were asked if transition planning occurred, based on the following elements: (1) doctor or other health care provider (HCP) discussed the eventual shift to an HCP who cares for adults, (2) an HCP actively worked with youth to gain self-care skills or understand changes in health care at age 18, and (3) youth had time alone with an HCP during the last preventive visit. Sociodemographic and health system characteristics were assessed for associations with transition planning. RESULTS: Nationally, 17% of YSHCN and 14% of youth without SHCN met the overall transition measure. Older age (15-17 years) was the only sociodemographic factor associated with meeting the overall transition measure and individual elements for YSHCN and youth without SHCN. Other sociodemographic characteristics associated with transition planning differed among the 2 populations. Receipt of care coordination and a written plan was associated with transition planning for YSHCN. CONCLUSIONS: This study reveals that few youth with and without SHCN receive transition planning support. It underscores the need for HCPs to work with youth independently and in collaboration with parents and/or caregivers throughout adolescence to gain self-care skills and prepare for adult-focused care.

Health Care Utilization and Unmet Need Among Youth With Special Health Care Needs.

PURPOSE: To examine unmet health needs and health care utilization among youth with special health care needs (YSHCN). METHODS: We analyzed data among youth aged 12-17 years using the 2016 National Survey of Children's Health. We conducted descriptive analyses comparing YSHCN with non-YSHCN, and bivariate and multivariable analyses examining associations between dependent and independent measures. Six dependent variables represented unmet needs and utilization. Adjusted analyses controlled for sociodemographic and health measures. RESULTS: A total of 5,862 individuals were identified as YSHCN, and nearly 70% had three or more comorbid conditions. Over 90% used medical care, preventive care, or dental care in the past 12 months, while 8% reported having unmet health needs (compared with 2.8% of non-YSHCN). Using a typology of qualifying criteria for special health care needs, we found that YSHCN with increasing complexity of needs were more likely to report unmet health needs, use of mental health care services, and emergency department use, compared with YSHCN using medication only to manage their conditions. All YSHCN living in households below 400% federal poverty level were less likely to utilize nearly all types of health care examined, with the exception of mental health care use, compared with those at or above 400% federal poverty level. CONCLUSIONS: Differences in complexity of needs, race/ethnicity, and poverty status highlight existing gaps in health care utilization and persistent unmet health needs among YSHCN. Efforts should focus on strengthening coordinated systems of care that optimally meet the needs of YSHCN so they may thrive in their families and communities.

Frozen-thawed embryo transfer cycles: clinical outcomes of single and double blastocyst transfers.

PURPOSE: To evaluate clinical outcomes of frozen-thawed embryo transfer cycles when one or two blastocysts are transferred. METHODS: Retrospective chart review RESULTS: Two hundred forty-three frozen blastocyst transfer (FBT) cycles were analyzed. Clinical pregnancy rate (50.4% vs. 34.7%), live birth rate (45.8% vs. 30.6%), and twin live birth rate (19.3% vs. 0) were significantly higher in the double versus single FBT group, respectively (p < 0.05). Prior fresh cycle success with same-cohort embryos did not predict outcome of FBT cycle. When the fresh cycle was unsuccessful, there still was a significant increase in twinning when two frozen-thawed blastocysts were transferred. CONCLUSIONS: Transferring two blastocysts during an FBT cycle resulted in higher live birth and twin live birth rates. Single FBT provided acceptable pregnancy rates for couples seeking to avoid a multiple pregnancy or for those having a single blastocyst stored. Interestingly, the outcome of fresh cycle with same-cohort embryos did not influence the outcome of frozen-thawed cycle.

Role for parasite genetic diversity in differential host responses to Trypanosoma brucei infection.

The postgenomic era has revolutionized approaches to defining host-pathogen interactions and the investigation of the influence of genetic variation in either protagonist upon infection outcome. We analyzed pathology induced by infection with two genetically distinct Trypanosoma brucei strains and found that pathogenesis is partly strain specific, involving distinct host mechanisms. Infections of BALB/c mice with one strain (927) resulted in more severe anemia and greater erythropoietin production compared to infections with the second strain (247), which, contrastingly, produced greater splenomegaly and reticulocytosis. Plasma interleukin-10 (IL-10) and gamma interferon levels were significantly higher in strain 927-infected mice, whereas IL-12 was higher in strain 247-infected mice. To define mechanisms underlying these differences, expression microarray analysis of host genes in the spleen at day 10 postinfection was undertaken. Rank product analysis (RPA) showed that 40% of the significantly differentially expressed genes were specific to infection with one or the other trypanosome strain. RPA and pathway analysis identified LXR/RXR signaling, IL-10 signaling, and alternative macrophage activation as the most significantly differentially activated host processes. These data suggest that innate immune response modulation is a key determinant in trypanosome infections, the pattern of which can vary, dependent upon the trypanosome strain. This strongly suggests that a parasite genetic component is responsible for causing disease in the host. Our understanding of trypanosome infections is largely based on studies involving single parasite strains, and our results suggest that an integrated host-parasite approach is required for future studies on trypanosome pathogenesis. Furthermore, it is necessary to incorporate parasite variation into both experimental systems and models of pathogenesis.

A major genetic locus in Trypanosoma brucei is a determinant of host pathology.

The progression and variation of pathology during infections can be due to components from both host or pathogen, and/or the interaction between them. The influence of host genetic variation on disease pathology during infections with trypanosomes has been well studied in recent years, but the role of parasite genetic variation has not been extensively studied. We have shown that there is parasite strain-specific variation in the level of splenomegaly and hepatomegaly in infected mice and used a forward genetic approach to identify the parasite loci that determine this variation. This approach allowed us to dissect and identify the parasite loci that determine the complex phenotypes induced by infection. Using the available trypanosome genetic map, a major quantitative trait locus (QTL) was identified on T. brucei chromosome 3 (LOD = 7.2) that accounted for approximately two thirds of the variance observed in each of two correlated phenotypes, splenomegaly and hepatomegaly, in the infected mice (named TbOrg1). In addition, a second locus was identified that contributed to splenomegaly, hepatomegaly and reticulocytosis (TbOrg2). This is the first use of quantitative trait locus mapping in a diploid protozoan and shows that there are trypanosome genes that directly contribute to the progression of pathology during infections and, therefore, that parasite genetic variation can be a critical factor in disease outcome. The identification of parasite loci is a first step towards identifying the genes that are responsible for these important traits and shows the power of genetic analysis as a tool for dissecting complex quantitative phenotypic traits.

The genetic map and comparative analysis with the physical map of Trypanosoma brucei.

Trypanosoma brucei is the causative agent of African sleeping sickness in humans and contributes to the debilitating disease 'Nagana' in cattle. To date we know little about the genes that determine drug resistance, host specificity, pathogenesis and virulence in these parasites. The availability of the complete genome sequence and the ability of the parasite to undergo genetic exchange have allowed genetic investigations into this parasite and here we report the first genetic map of T.brucei for the genome reference stock TREU 927, comprising of 182 markers and 11 major linkage groups, that correspond to the 11 previously identified chromosomes. The genetic map provides 90% probability of a marker being 11 cM from any given locus. Its comparison to the available physical map has revealed the average physical size of a recombination unit to be 15.6 Kb/cM. The genetic map coupled with the genome sequence and the ability to undertake crosses presents a new approach to identifying genes relevant to the disease and its prevention in this important pathogen through forward genetic analysis and positional cloning.

Allelic segregation and independent assortment in T. brucei crosses: proof that the genetic system is Mendelian and involves meiosis.

The genetic system on Trypanosoma brucei has been analysed by generating large numbers of independent progeny clones from two crosses, one between two cloned isolates of Trypanosoma brucei brucei and one between cloned isolates of T. b. brucei and Trypanosoma brucei gambiense, Type 2. Micro and minisatellite markers (located on each of the 11 megabase housekeeping chromosomes) were identified, that are heterozygous in one or more of the parental strains and the segregation of alleles at each locus was then determined in each of the progeny clones. The results unequivocally show that alleles segregate in the predicted ratios and that alleles at loci on different chromosomes segregate independently. These data provide statistically robust proof that the genetic system is Mendelian and that meiosis occurs. Segregation distortion is observed with the minisatellite locus located on chromosome I of T. b. gambiense Type 2 and neighboring markers, but analysis of markers further along this chromosome did not show distortion leading to the conclusion that this is due to selection acting on one part of this chromosome. The results obtained are discussed in relation to previously proposed models of mating and support the occurrence of meiosis to form haploid gametes that then fuse to form the diploid progeny in a single round of mating.

Neutralisation of TGF beta or binding of VLA-4 to fibronectin prevents rat tendon adhesion following transection.

Following tendon injury, severe loss of function often occurs either as a result of obliteration of the synovial canal with fibrous scar tissue or from rupture of the repaired tendon. The role of cell engineering in tendon repair is to promote strong and rapid healing of tendon whilst at the same time facilitating rapid reconstitution of the synovial canal. Modification of the immediate inflammatory response around healing tendon has been found to be of value. Experimentally this has been achieved by neutralisation of transforming growth factor-beta over the first 3 days following injury, or by blockade of inflammatory cell binding to the CS-1 locus on fibronectin with an anti-VLA-4 antibody, or with the synthetic VLA-4 inhibitor, CS-1 peptide, in a rat model of tendon transection. It is concluded from this pilot study that the treatments described hold promise in improving outcomes of the common clinical problem of tendon injury in man.

Expression of nitric oxide synthase and transforming growth factor-beta in crush-injured tendon and synovium.

This study examined the expression of inducible nitric oxide synthase (iNOS) and transforming growth factor-beta (TGF-beta) in macrophage infiltrates within crush-injured digital flexor tendon and synovium of control rats and rats treated with N(G)-nitro-1-arginine methyl ester (L-NAME) (5 mg/kg). Release of TGF-beta from organ cultures of tendon, muscle, and synovium, and the effects of L-NAME treatment (in vitro and in vivo), on adhesion of peritoneal macrophages to epitenon monolayers were also investigated. The results showed that during normal tendon healing the levels of TGF-beta are high at first and gradually decrease after 3 weeks of injury to slightly above control uninjured levels. However, when L-NAME was administered at the time of injury, the macrophage infiltrates were expressing high levels of TGF-beta even at 5 weeks after the injury, with no evidence of reduction. In the standard injury, iNOS activity was greatest at the acute phase of the inflammatory response and then gradually returned to normal. Treatment with L-NAME, however, resulted in inhibition of iNOS activity at 3 days and a reduction in the activity at the later time points examined after injury. We also found greatly increased levels of adhesion of peritoneal macrophages from L-NAME-treated rats to epitenon monolayers in vitro, which reflect a chronic imbalance in expression of TGF-beta, which is overexpressed, and nitric oxide, which is underexpressed. The results of the current study show that formation of nitric oxide is an important event in the course of tendon healing since its inhibition results in chronic inflammation and fibrosis due to an imbalance in TGF-beta expression in vivo.