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  • Ovid Technologies (Wolters Kluwer Health)  (3)
  • 2015-2019  (3)
  • 2018  (3)
  • 1
    In: Circulation, Ovid Technologies (Wolters Kluwer Health), Vol. 137, No. 17 ( 2018-04-24), p. 1784-1795
    Abstract: On the basis of laboratory cardiopulmonary resuscitation (CPR) investigations and limited adult data demonstrating that survival depends on attaining adequate arterial diastolic blood pressure (DBP) during CPR, the American Heart Association recommends using blood pressure to guide pediatric CPR. However, evidence-based blood pressure targets during pediatric CPR remain an important knowledge gap for CPR guidelines. Methods: All children ≥37 weeks’ gestation and 〈 19 years old in Collaborative Pediatric Critical Care Research Network intensive care units with chest compressions for ≥1 minute and invasive arterial blood pressure monitoring before and during CPR between July 1, 2013, and June 31, 2016, were included. Mean DBP during CPR and Utstein-style standardized cardiac arrest data were collected. The hypothesis was that DBP ≥25 mm Hg during CPR in infants and ≥30 mm Hg in children ≥1 year old would be associated with survival. Primary outcome was survival to hospital discharge. Secondary outcome was survival to hospital discharge with favorable neurological outcome, defined as Pediatric Cerebral Performance Categories 1 to 3 or no worse than prearrest baseline. Multivariable Poisson regression models with robust error estimates were used to estimate the relative risk of outcomes. Results: Blinded investigators analyzed blood pressure waveforms during CPR from 164 children, including 60% 〈 1 year old, 60% with congenital heart disease, and 54% after cardiac surgery. The immediate cause of arrest was hypotension in 67%, respiratory decompensation in 44%, and arrhythmia in 19%. Median duration of CPR was 8 minutes (quartiles, 3 and 27 minutes). Ninety percent survived the event, 68% with return of spontaneous circulation and 22% by extracorporeal life support. Forty-seven percent survived to hospital discharge, and 43% survived to discharge with favorable neurological outcome. Maintaining mean DBP ≥25 mm Hg in infants and ≥30 mm Hg in children ≥1 year old occurred in 101 of 164 children (62%) and was associated with survival (adjusted relative risk, 1.7; 95% confidence interval, 1.2–2.6; P =0.007) and survival with favorable neurological outcome (adjusted relative risk, 1.6; 95% confidence interval, 1.1–2.5; P =0.02). Conclusions: These data demonstrate that mean DBP ≥25 mm Hg during CPR in infants and ≥30 mm Hg in children ≥1 year old was associated with greater likelihood of survival to hospital discharge and survival with favorable neurological outcome.
    Type of Medium: Online Resource
    ISSN: 0009-7322 , 1524-4539
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2018
    detail.hit.zdb_id: 1466401-X
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  • 2
    Online Resource
    Online Resource
    Ovid Technologies (Wolters Kluwer Health) ; 2018
    In:  Circulation Vol. 138, No. Suppl_1 ( 2018-11-06)
    In: Circulation, Ovid Technologies (Wolters Kluwer Health), Vol. 138, No. Suppl_1 ( 2018-11-06)
    Abstract: Background: Heart failure with reduced ejection fraction (HFrEF) continues to be a global health burden. We recently reported a strong association of plasma metabolite profile (thirteen different metabolites) with survival among patients with HFrEF but the mechanism of this association is unclear. We studied the genetic associations of plasma metabolite to try to illuminate the disease mechanisms at work. Methods: A prospective genetic registry including 1032 HFrEF with genome-wide genotyping and imputation of single nucleotide polymorphisms (SNP; ~7 millions) and targeted metabolomics profiling. Genome-wide (GW) association analyses were performed to investigate the genetic impact of each SNP on the 13 metabolites of interest. Analyses were performed using linear models stratified by race (European Americans [N=516] and African Americans [N=516] and including the top five principal components (PC) for each population to avoid spurious associations due to population stratification. A fixed-effect meta-analysis was then used to combine results from the two populations. Threshold for GW significance was p 〈 5E-8. As a second step, Cox proportional hazard regression models of overall survival were tested for each SNP that met GW significance. Results: We found at least one SNP reaching GW significance for 6 metabolites metabolites (a-KG, C5.Isovaleryl, Fumarate, Leucine, Succinate and X3.HBA). The most significant SNP (rs77836784, an intronic variant within PACRG) was associated with X3.HBA in African American HF patients (Beta estimate=22.82, P-value=7.14E-14). A cross-checking of SNP associations on both metabolites and HF survival identified 13 independent SNPs that may partially explain the contribution of the metabolites on HF mortality (Table 1) and seem to have biologic plausibility including for example a G-protein coupled receptor (GPR68) and protein kinase C (PRKC1). Conclusion: Genetic variants are associated with predictive plasma metabolites and survival. This may be useful to understand the underlying pathways connecting metabolites to HF progression. A complete investigation of genomic and metabolomics determinants including causal mediation and pathway analyses are on-going.
    Type of Medium: Online Resource
    ISSN: 0009-7322 , 1524-4539
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2018
    detail.hit.zdb_id: 1466401-X
    Location Call Number Limitation Availability
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  • 3
    In: Journal of the American Heart Association, Ovid Technologies (Wolters Kluwer Health), Vol. 7, No. 10 ( 2018-05-15)
    Abstract: It remains unclear whether beta‐blockade is similarly effective in black patients with heart failure and reduced ejection fraction as in white patients, but self‐reported race is a complex social construct with both biological and environmental components. The objective of this study was to compare the reduction in mortality associated with beta‐blocker exposure in heart failure and reduced ejection fraction patients by both self‐reported race and by proportion African genetic ancestry. Methods and Results Insured patients with heart failure and reduced ejection fraction (n=1122) were included in a prospective registry at Henry Ford Health System. This included 575 self‐reported blacks (129 deaths, 22%) and 547 self‐reported whites (126 deaths, 23%) followed for a median 3.0 years. Beta‐blocker exposure ( BB exp) was calculated from pharmacy claims, and the proportion of African genetic ancestry was determined from genome‐wide array data. Time‐dependent Cox proportional hazards regression was used to separately test the association of BB exp with all‐cause mortality by self‐reported race or by proportion of African genetic ancestry. Both sets of models were evaluated unadjusted and then adjusted for baseline risk factors and beta‐blocker propensity score. BB exp effect estimates were protective and of similar magnitude both by self‐reported race and by African genetic ancestry (adjusted hazard ratio=0.56 in blacks and adjusted hazard ratio=0.48 in whites). The tests for interactions with BB exp for both self‐reported race and for African genetic ancestry were not statistically significant in any model ( P 〉 0.1 for all). Conclusions Among black and white patients with heart failure and reduced ejection fraction, reduction in all‐cause mortality associated with BB exp was similar, regardless of self‐reported race or proportion African genetic ancestry.
    Type of Medium: Online Resource
    ISSN: 2047-9980
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2018
    detail.hit.zdb_id: 2653953-6
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