Insurance status affects access to care, which may affect health outcomes. The objective was to determine whether patients without insurance or with government-sponsored insurance had worse quality of care or in-hospital outcomes in acute ischemic stroke. Multivariable logistic regressions with generalized estimating equations stratified by age under or at least 65 years were adjusted for patient demographics and comorbidities, presenting factors, and hospital characteristics to determine differences in in-hospital mortality and postdischarge destination. We included 589 320 ischemic stroke patients treated at 1604 US hospitals participating in the Get With The Guidelines-Stroke program between 2012 and 2015. Uninsured patients with hypertension, high cholesterol, or diabetes mellitus were less likely to be taking appropriate control medications prior to stroke, to use an ambulance to arrive to the ED, or to arrive early after symptom onset. Even after adjustment, the uninsured were more likely than the privately insured to die in the hospital (<65 years, OR 1.33 [95% CI 1.22-1.45]; ≥65 years OR 1.54 [95% CI 1.34-1.75]), and among survivors, were less likely to go to inpatient rehab (<65 OR 0.63 [95% CI 0.6-0.67]; ≥65 OR 0.56 [95% CI 0.5-0.63]). In contrast, patients with Medicare and Medicaid were more likely to be discharged to a Skilled Nursing Facility (<65 years OR 2.08 [CI 1.96-2.2]; OR 2.01 [95% CI 1.91-2.13]; ≥65 years OR 1.1 [95% CI 1.07-1.13]; OR 1.41 [95% CI 1.35-1.46]). Preventative care prior to ischemic stroke, time to presentation for acute treatment, access to rehabilitation, and in-hospital mortality differ by patient insurance status.

Background

The pathogenic mechanisms underlying pulmonary arterial hypertension resulting from schistosomiasis, one of the most common causes of pulmonary hypertension worldwide, remain unknown. We hypothesized that transforming growth factor-β (TGF-β) signaling as a consequence of Th2 inflammation is critical for the pathogenesis of this disease.

Methods and results

Mice sensitized and subsequently challenged with Schistosoma mansoni eggs developed pulmonary hypertension associated with an increase in right ventricular systolic pressure, thickening of the pulmonary artery media, and right ventricular hypertrophy. Rho-kinase-dependent vasoconstriction accounted for ≈60% of the increase in right ventricular systolic pressure. The pulmonary vascular remodeling and pulmonary hypertension were dependent on increased TGF-β signaling, as pharmacological blockade of the TGF-β ligand and receptor, and mice lacking Smad3 were significantly protected from Schistosoma-induced pulmonary hypertension. Blockade of TGF-β signaling also led to a decrease in interleukin-4 and interleukin-13 concentrations, which drive the Th2 responses characteristic of schistosomiasis lung pathology. Lungs of patients with schistosomiasis-associated pulmonary arterial hypertension have evidence of TGF-β signaling in their remodeled pulmonary arteries.

Conclusion

Experimental S mansoni-induced pulmonary vascular disease relies on canonical TGF-β signaling.

BACKGROUND: In the U.S. and globally, dominant metrics of contraceptive access focus on the use of certain contraceptive methods and do not address self-defined need for contraception; therefore, these metrics fail to attend to person-centeredness, a key component of healthcare quality. This study addresses this gap by presenting new data from the U.S. on preferred contraceptive method use, a person-centered contraceptive access indicator. Additionally, we examine the association between key aspects of person-centered healthcare access and preferred contraceptive method use. METHODS: We fielded a nationally representative survey in the U.S. in English and Spanish in 2022, surveying non-sterile 15-44-year-olds assigned female sex at birth. Among current and prospective contraceptive users (unweighted n = 2119), we describe preferred method use, reasons for non-use, and differences in preferred method use by sociodemographic characteristics. We conduct logistic regression analyses examining the association between four aspects of person-centered healthcare access and preferred contraceptive method use. FINDINGS: A quarter (25.2%) of current and prospective users reported there was another method they would like to use, with oral contraception and vasectomy most selected. Reasons for non-use of preferred contraception included side effects (28.8%), sex-related reasons (25.1%), logistics/knowledge barriers (18.6%), safety concerns (18.3%), and cost (17.6%). In adjusted logistic regression analyses, respondents who felt they had enough information to choose appropriate contraception (Adjusted Odds Ratio [AOR] 3.31; 95% CI 2.10, 5.21), were very (AOR 9.24; 95% CI 4.29, 19.91) or somewhat confident (AOR 3.78; 95% CI 1.76, 8.12) they could obtain desired contraception, had received person-centered contraceptive counseling (AOR 1.72; 95% CI 1.33, 2.23), and had not experienced discrimination in family planning settings (AOR 1.58; 95% CI 1.13, 2.20) had increased odds of preferred contraceptive method use. INTERPRETATION: An estimated 8.1 million individuals in the U.S. are not using a preferred contraceptive method. Interventions should focus on holistic, person-centered contraceptive access, given the implications of information, self-efficacy, and discriminatory care for preferred method use. FUNDING: Arnold Ventures.

Background

The development of tools to monitor the right ventricle in pulmonary arterial hypertension (PAH) is of clinical importance. PAH is associated with pathologic expression of the transcription factor hypoxia-inducible factor (HIF)-1α, which induces glycolytic metabolism and mobilization of proangiogenic progenitor (CD34(+)CD133(+)) cells. We hypothesized that PAH cardiac myocytes have a HIF-related switch to glycolytic metabolism that can be detected with fasting 2-deoxy-2-[(18)F]fluoro-d-glucose positron emission tomography (FDG-PET) and that glucose uptake is informative for cardiac function.

Methods

Six healthy control subjects and 14 patients with PAH underwent fasting FDG-PET and echocardiogram. Blood CD34(+)CD133(+) cells and erythropoietin were measured as indicators of HIF activation. Twelve subjects in the PAH cohort underwent repeat studies 1 year later to determine if changes in FDG uptake were related to changes in echocardiographic parameters or to measures of HIF activation.

Measurements and results

FDG uptake in the right ventricle was higher in patients with PAH than in healthy control subjects and correlated with echocardiographic measures of cardiac dysfunction and circulating CD34(+)CD133(+) cells but not erythropoietin. Among patients with PAH, FDG uptake was lower in those receiving β-adrenergic receptor blockers. Changes in FDG uptake over time were related to changes in echocardiographic parameters and CD34(+)CD133(+) cell numbers. Immunohistochemistry of explanted PAH hearts of patients undergoing transplantation revealed that HIF-1α was present in myocyte nuclei but was weakly detectable in control hearts.

Conclusions

PAH hearts have pathologic glycolytic metabolism that is quantitatively related to cardiac dysfunction over time, suggesting that metabolic imaging may be useful in therapeutic monitoring of patients.