Publications by authors named "Checchia P"

Article Synopsis
  • - A study investigates potential excess events involving heavy-flavor quark pairs (such as b and c quarks) and significant transverse momentum imbalance from proton-proton collisions at a 13 TeV center-of-mass energy at the CERN LHC, using data collected with the CMS detector.
  • - The analysis finds no significant deviations from standard model predictions, meaning the results align with what is expected from current particle physics theories.
  • - This research contributes to dark matter understanding by interpreting its production in these heavy-flavor quark final states and combines multiple searches to create stronger exclusions than those from individual searches.
View Article and Find Full Text PDF

OBJECTIVE Adult ventilator-associated event (VAE) definitions include ventilator-associated conditions (VAC) and subcategories for infection-related ventilator-associated complications (IVAC) and possible ventilator-associated pneumonia (PVAP). We explored these definitions for children. DESIGN Retrospective cohort SETTING Pediatric, cardiac, or neonatal intensive care units (ICUs) in 6 US hospitals PATIENTS Patients ≤18 years old ventilated for ≥1 day METHODS We identified patients with pediatric VAC based on previously proposed criteria.

View Article and Find Full Text PDF

Introduction: The REGAL (RSV evidence-a geographical archive of the literature) series provide a comprehensive review of the published evidence in the field of respiratory syncytial virus (RSV) in Western countries over the last 20 years. This third publication covers the risk and burden of RSV infection in infants with chronic lung disease (CLD), formerly called bronchopulmonary dysplasia (BPD).

Methods: A systematic review was undertaken of publications between January 1, 1995 and December 31, 2015 across PubMed, Embase, The Cochrane Library, and Clinicaltrials.

View Article and Find Full Text PDF

Objective: We evaluated the use of nesiritide in children with critical congenital heart disease, pulmonary congestion, and inadequate urine output despite conventional diuretic therapy.

Design: We conducted a retrospective analysis of 26 consecutive patients, comprising 37 infusions occurring during separate hospitalizations. Hemodynamic variables, urine output, and serum creatinine levels were monitored prior to and throughout the duration of therapy with nesiritide.

View Article and Find Full Text PDF

Background: Sequential nephron blockade using intravenous chlorothiazide is often used to enhance urine output in patients with inadequate response to loop diuretics. A few data exist to support this practice in critically ill infants.

Methods: We included 100 consecutive patients <1 year of age who were administered intravenous chlorothiazide while receiving furosemide therapy in the cardiac ICU in our study.

View Article and Find Full Text PDF

Objective: The Pediatric Sepsis Biomarker Risk Model (PERSEVERE), a pediatric sepsis risk model, uses biomarkers to estimate baseline mortality risk for pediatric septic shock. It is unknown how PERSEVERE performs within distinct septic shock phenotypes. We tested PERSEVERE in children with septic shock and thrombocytopenia-associated multiple organ failure (TAMOF), and in those without new onset thrombocytopenia but with multiple organ failure (MOF).

View Article and Find Full Text PDF

The growth of Pediatric Cardiovascular Intensive Care as a subspecialty has been incredible. Outcomes have improved, care delivery has matured, and research has made advances. Within this review, we take the opportunity to examine the subspecialty's past accomplishments with pride, take stock in its current state, and look forward with excitement to its future.

View Article and Find Full Text PDF

Introduction: The REGAL (RSV Evidence-a Geographical Archive of the Literature) series provide a comprehensive review of the published evidence in the field of respiratory syncytial virus (RSV) in Western countries over the last 20 years. This second publication covers the risk and burden of RSV infection in preterm infants born at <37 weeks' gestational age (wGA) without chronic lung disease or congenital heart disease.

Methods: A systematic review was undertaken for articles published between January 1, 1995 and December 31, 2015.

View Article and Find Full Text PDF

A search for the resonant production of high-mass photon pairs is presented. The analysis is based on samples of proton-proton collision data collected by the CMS experiment at center-of-mass energies of 8 and 13 TeV, corresponding to integrated luminosities of 19.7 and 3.

View Article and Find Full Text PDF

Introduction: The REGAL (RSV [respiratory syncytial virus] Evidence-a Geographical Archive of the Literature) series provides a comprehensive review of the published evidence in the field of RSV in Western countries over the last 20 years. This first of seven publications covers the epidemiology and burden of RSV infection.

Methods: A systematic review was undertaken for articles published between Jan 1, 1995 and Dec 31, 2015 across PubMed, Embase, The Cochrane Library, and Clinicaltrials.

View Article and Find Full Text PDF
Article Synopsis
  • A study was conducted on proton-proton collisions at 8 TeV to search for narrow resonances decaying into dijet final states, using data from the CMS detector with a total integrated luminosity of 18.8 fb^{-1}.
  • The researchers utilized a novel data scouting technique to efficiently collect large amounts of data by streamlining the event information, which enhanced the detection of low-mass resonances at a higher rate.
  • The analysis resulted in no evidence for narrow resonances in the dijet mass distribution, and upper limits on resonance cross sections and couplings, specifically for a leptophobic resonance Z_{B}^{'}, were established, surpassing previous experimental results for masses between 500 and 800 GeV.
View Article and Find Full Text PDF

New sets of parameters ("tunes") for the underlying-event (UE) modelling of the pythia8, pythia6 and herwig++ Monte Carlo event generators are constructed using different parton distribution functions. Combined fits to CMS UE proton-proton ([Formula: see text]) data at [Formula: see text] and to UE proton-antiproton ([Formula: see text]) data from the CDF experiment at lower [Formula: see text], are used to study the UE models and constrain their parameters, providing thereby improved predictions for proton-proton collisions at 13[Formula: see text]. In addition, it is investigated whether the values of the parameters obtained from fits to UE observables are consistent with the values determined from fitting observables sensitive to double-parton scattering processes.

View Article and Find Full Text PDF

The cross section for [Formula: see text] production in the all-jets final state is measured in pp collisions at a centre-of-mass energy of 8 [Formula: see text] at the LHC with the CMS detector, in data corresponding to an integrated luminosity of 18.4 [Formula: see text]. The inclusive cross section is found to be [Formula: see text] [Formula: see text].

View Article and Find Full Text PDF

Objectives: Prognostic and predictive enrichment strategies are fundamental tools of precision medicine. Identifying children with septic shock who may benefit from corticosteroids remains a challenge. We combined prognostic and predictive strategies to identify a pediatric septic shock subgroup responsive to corticosteroids.

View Article and Find Full Text PDF

 SENTINEL1 characterized U.S. preterm infants 29 to 35 weeks' gestational age (wGA) < 12 months old hospitalized for laboratory-confirmed respiratory syncytial virus (RSV) disease and not receiving RSV immunoprophylaxis during the 2014 to 2015 RSV season.

View Article and Find Full Text PDF

Results on two-particle angular correlations for charged particles produced in pp collisions at a center-of-mass energy of 13 TeV are presented. The data were taken with the CMS detector at the LHC and correspond to an integrated luminosity of about 270  nb^{-1}. The correlations are studied over a broad range of pseudorapidity (|η|<2.

View Article and Find Full Text PDF

The evolution and development of pediatric cardiac critical care as a distinct subspecialty have occurred rapidly over the past 20 years. As the field has grown, models for education, training, and care delivery have changed as well. This review will highlight the current state of education, training, and parental involvement in care delivery for pediatric cardiac critical care as initially.

View Article and Find Full Text PDF

A search for narrow resonances in proton-proton collisions at sqrt[s]=13  TeV is presented. The invariant mass distribution of the two leading jets is measured with the CMS detector using a data set corresponding to an integrated luminosity of 2.4  fb^{-1}.

View Article and Find Full Text PDF

The top quark pair production cross section is measured for the first time in proton-proton collisions at sqrt[s]=13  TeV by the CMS experiment at the CERN LHC, using data corresponding to an integrated luminosity of 43  pb^{-1}. The measurement is performed by analyzing events with at least one electron and one muon of opposite charge, and at least two jets. The measured cross section is 746±58(stat)±53(syst)±36(lumi)  pb, in agreement with the expectation from the standard model.

View Article and Find Full Text PDF

A measurement is presented of differential cross sections for Higgs boson (H) production in pp collisions at [Formula: see text][Formula: see text]. The analysis exploits the [Formula: see text] decay in data corresponding to an integrated luminosity of 19.7[Formula: see text] collected by the CMS experiment at the LHC.

View Article and Find Full Text PDF

The production cross sections of the B^{+}, B^{0}, and B_{s}^{0} mesons, and of their charge conjugates, are measured via exclusive hadronic decays in p+Pb collisions at the center-of-mass energy sqrt[s_{NN}]=5.02  TeV with the CMS detector at the CERN LHC. The data set used for this analysis corresponds to an integrated luminosity of 34.

View Article and Find Full Text PDF

The temporal version of the pediatric sepsis biomarker risk model (tPERSEVERE) estimates the risk of a complicated course in children with septic shock based on biomarker changes from days 1 to 3 of septic shock. We validated tPERSEVERE performance in a prospective cohort, with an a priori plan to redesign tPERSEVERE if it did not perform well. Biomarkers were measured in the validation cohort (n = 168) and study subjects were classified according to tPERSEVERE.

View Article and Find Full Text PDF

A search for narrow resonances decaying to an electron and a muon is presented. The [Formula: see text] [Formula: see text] mass spectrum is also investigated for non-resonant contributions from the production of quantum black holes (QBHs). The analysis is performed using data corresponding to an integrated luminosity of 19.

View Article and Find Full Text PDF