Respiratory Severity Score and Oxygen Saturation Index during the First 2 Hours of Life as Predictors for Noninvasive Respiratory Support Failure in Respiratory Distress Syndrome.

Objective:  Noninvasive respiratory support (NRS) failure is common in preterm infants with respiratory distress syndrome (RDS). We evaluated the utility of respiratory severity score (RSS) and oxygen saturation index (OSI) during the first 2 hours of life (HOL) as predictors for NRS failure in moderate preterm infants.

Study Design:  We conducted a retrospective cohort study of infants born between 28 and 33 weeks with RDS.

Surfactant delivery by aerosol inhalation - past, present, and future.

Surfactant replacement therapy (SRT) by nebulization to spontaneously breathing patients has been regarded as the Holy Grail since surfactant deficiency was first identified as the cause for neonatal respiratory distress syndrome. It avoids neonatal endotracheal intubation, a procedure that is often difficult and occasionally harmful. Unapproved alternatives to endotracheal tube placement for liquid surfactant instillation, such as LISA (thin catheter intubation) and SALSA (supraglottic airway insertion) have significant merit but are still invasive, leaving nebulized SRT as the only truly non-invasive method.

Incidence and types of congenital heart disease at a referral hospital in Jordan: retrospective study from a tertiary center.

Background: Congenital heart disease (CHD) is the most common birth defect and accounts for significant global morbidity and mortality. Relatively little is known about the epidemiology of CHD in Jordan or the manner in which CHD is identified.

Methods: A retrospective medical record review was conducted for all neonates who had an abnormal echocardiogram performed at a tertiary referral hospital.

Respiratory Severity Score during the First 3 Hours of Life as a Predictor for Failure of Noninvasive Respiratory Support and Need for Late Rescue Surfactant Administration.

Objective: Preterm infants often develop failure of noninvasive respiratory support. These infants miss the advantages of early rescue surfactant therapy. In this study, we evaluate the utility of respiratory severity score (RSS) during the first 3 hours of life (HOL) as a predictor for failure of noninvasive respiratory support.

Predictors of successful treatment of respiratory distress with aerosolized calfactant.

Introduction: Predictors for successful aerosolized surfactant treatment are not well defined.

Objective: To identify predictors for successful treatment in the AERO-02 trial and the AERO-03 expanded access program.

Methods: Neonates receiving nasal continuous positive airway pressure (NCPAP) at the time of first aerosolized calfactant administration were included in this analysis.

Response to aerosolized calfactant in infants with respiratory distress syndrome; a post-hoc analysis of AERO-02 trial.

Background: The aerosolized calfactant decreased the need for intubation in neonates with respiratory distress syndrome (AERO-02 trial).

Objective: To determine the oxygenation response to aerosolized calfactant among infants born 28 0/7-36 6/7 weeks with RDS in the AERO-02 trial.

Methods: Trends in hourly fraction of oxygen (FiO), mean airway pressure (MAP) and respiratory severity score (RSS) were compared between the aerosolized calfactant (AC) and usual care (UC) groups from time of randomization for 72 h.

Implementation of Surfactant Administration through Laryngeal or Supraglottic Airways (SALSA): A Jordanian NICU's Journey to Improve Surfactant Administration.

Administration of liquid surfactant through an endotracheal tube for the treatment of respiratory distress syndrome has been the standard of care for decades. Surfactant administration through laryngeal or supraglottic airways (SALSA) is a simplified procedure for delivery of surfactant that is less invasive and better tolerated. The Al Bashir Maternity and Children’s Hospital NICU in Amman, Jordan, implemented SALSA as a potentially better practice in 2019 with the objective to effectively and efficiently deliver surfactant in a minimally invasive way and to decrease the adverse events associated with intubation−surfactant−extubation (InSurE) and laryngoscopy.

Surfactant Administration Through Laryngeal or Supraglottic Airways (SALSA): A Viable Method for Low-Income and Middle-Income Countries.

Administration of liquid surfactant through an endotracheal tube for the treatment of respiratory distress syndrome has been the standard of care for decades. A skilled health care provider is needed to perform this procedure. In lower-income and middle-income countries (LMICs), healthcare resources are often limited, leading to increased mortality of premature infants, many of whom would benefit from surfactant administration.

Factors associated with initial tidal volume selection during neonatal volume-targeted ventilation in two NICUs: a retrospective cohort study.

Objective: To quantify initial tidal volume (VT) during neonatal volume-targeted ventilation (VTV) and to characterize the agreement of initial VT with the limited-evidence available.

Study Design: We performed a multi-center retrospective observational cohort study in two Neonatal Intensive Care Units evaluating 313 infants who received VTV as the initial ventilation modality prior to postnatal day 14. We generated descriptive statistics and performed multivariable logistic regression analysis to determine factors associated with initial VT use that agreed with available literature.

Alternative Methods of Surfactant Administration in Preterm Infants with Respiratory Distress Syndrome: State of the Art.

For preterm infants with respiratory distress syndrome, delivery of surfactant via brief intubation (INtubate, SURfactant, Extubate; InSurE) has been the standard technique of surfactant administration. However, this method requires intubation and positive pressure ventilation. It is thought that even the short exposure to positive pressure inflations may be enough to initiate the cascade of events that lead to lung injury in the smallest neonates.

Surfactant Administration Through Laryngeal or Supraglottic Airways.

Noninvasive ventilation is frequently used in the treatment of infants with respiratory distress syndrome. This practice is often effective in higher gestational age neonates, but can be difficult in those with lower gestational ages as surfactant deficiency can be severe. While noninvasive ventilation avoids the negative effects of intubation and ventilator-induced lung injury, failure of this mode of support does occur with relative frequency and is primarily caused by the poorly compliant, surfactant-deficient lung.

Association of time of day and extubation success in very low birthweight infants: a multicenter cohort study.

Objective: To determine the association of overnight extubation (OE) with extubation success.

Study Design: Retrospective cohort study in three NICUs from 2016 to 2020. Infants without congenital anomalies, less than 1500 grams at birth, who were ventilated and received an extubation attempt were included.

Aerosolized Calfactant for Newborns With Respiratory Distress: A Randomized Trial.

Background: Exogenous surfactants to treat respiratory distress syndrome (RDS) are approved for tracheal instillation only; this requires intubation, often followed by positive pressure ventilation to promote distribution. Aerosol delivery offers a safer alternative, but clinical studies have had mixed results. We hypothesized that efficient aerosolization of a surfactant with low viscosity, early in the course of RDS, could reduce the need for intubation and instillation of liquid surfactant.

In Vitro CRISPR/Cas9-Directed Gene Editing to Model LRRK2 G2019S Parkinson's Disease in Common Marmosets.

Leucine-rich repeat kinase 2 (LRRK2) G2019S is a relatively common mutation, associated with 1-3% of Parkinson's disease (PD) cases worldwide. G2019S is hypothesized to increase LRRK2 kinase activity. Dopaminergic neurons derived from induced pluripotent stem cells of PD patients carrying LRRK2 G2019S are reported to have several phenotypes compared to wild type controls, including increased activated caspase-3 and reactive oxygen species (ROS), autophagy dysfunction, and simplification of neurites.

α-Synuclein Expression Is Preserved in Substantia Nigra GABAergic Fibers of Young and Aged Neurotoxin-Treated Rhesus Monkeys.

α-Synuclein (α-syn) is a small presynaptic protein distributed ubiquitously in the central and peripheral nervous system. In normal conditions, α-syn is found in soluble form, while in Parkinson's disease (PD) it may phosphorylate, aggregate, and combine with other proteins to form Lewy bodies. The purpose of this study was to evaluate, in nonhuman primates, whether α-syn expression is affected by age and neurotoxin challenge.

Estimating base cation weathering rates in the United States: challenges of uncertain soil mineralogy and specific surface area with applications of the PROFILE model.

The weathering release rate of base cations (BC) from soil minerals is fundamentally important for terrestrial ecosystem growth, function, and sensitivity to acid deposition. Understanding BC is necessary to reduce or prevent damage to acid-sensitive natural systems, in that this information is needed to both evaluate the effectiveness of existing policies, and guide establishment of further policies in the event they are required. Yet BC is challenging to estimate.

Induced Pluripotent Stem Cell-Derived Dopaminergic Neurons from Adult Common Marmoset Fibroblasts.

The common marmoset monkey (Callithrix jacchus; Cj) is an advantageous nonhuman primate species for modeling age-related disorders, including Parkinson's disease, due to their shorter life span compared to macaques. Cj-derived induced pluripotent stem cells (Cj-iPSCs) from somatic cells are needed for in vitro disease modeling and testing regenerative medicine approaches. Here we report the development of a novel Cj-iPSC line derived from adult marmoset fibroblasts.

Real-Time Intraoperative MRI Intracerebral Delivery of Induced Pluripotent Stem Cell-Derived Neurons.

Induced pluripotent stem cell (iPSC)-derived neurons represent an opportunity for cell replacement strategies for neurodegenerative disorders such as Parkinson's disease (PD). Improvement in cell graft targeting, distribution, and density can be key for disease modification. We have previously developed a trajectory guide system for real-time intraoperative magnetic resonance imaging (RT-IMRI) delivery of infusates, such as viral vector suspensions for gene therapy strategies.

Histological chorioamnionitis shapes the neonatal transcriptomic immune response.

Background: Histologic chorioamnionitis (HCA) is commonly associated with preterm birth and deleterious post-natal outcomes including sepsis and necrotizing enterocolitis. Transcriptomic analysis has been used to uncover gene signatures that permit diagnosis and prognostication, show new therapeutic targets, and reveal mechanisms that underlie differential outcomes with other complex disease states in neonates such as sepsis.

Aims: To define the transcriptomic and inflammatory protein response in peripheral blood among infants with exposure to histologic chorioamnionitis.

Neonatal ventricular fibrillation and an elusive ALCAPA: things are not always as they seem.

An anomalous left coronary artery from the pulmonary artery (ALCAPA) is a rare congenital cardiac condition that typically presents with poor feeding and failure to thrive from progressive myocardial ischaemia. Previous reports of ALCAPA presenting with ventricular fibrillation (VF) have suggested a causative relationship. In this case, we present a neonate with VF without apparent cause after an extensive evaluation.

Postnatal Age Is a Critical Determinant of the Neonatal Host Response to Sepsis.

Neonates manifest a unique host response to sepsis even among other children. Preterm neonates may experience sepsis soon after birth or during often-protracted birth hospitalizations as they attain physiologic maturity. We examined the transcriptome using genome-wide expression profiling on prospectively collected peripheral blood samples from infants evaluated for sepsis within 24 h after clinical presentation.

Utility of morbidity and mortality conference in end-of-life education in the neonatal intensive care unit.

Background: A monthly neonatal intensive care unit (NICU) morbidity and mortality conference (M&MC) was used to study the documentation of end-of-life (EOL) care, and integrate related education for staff and trainees.

Objective: To study the current documentation of comprehensive, interdisciplinary, palliative EOL care in the NICU at the Vanderbilt Children's Hospital and improve it relative to a historical background.

Design/methods: A survey tool was developed and used at all neonatal M&MCs for 1 year (August 2003 through July 2004), in conducting a prospective chart audit of 50% of NICU deaths.

A crossover analysis of mandatory minute ventilation compared to synchronized intermittent mandatory ventilation in neonates.

Background: Mandatory minute ventilation (MMV) is a novel ventilator mode that combines synchronized intermittent mandatory ventilation (SIMV) breaths with pressure-supported spontaneous breaths to maintain a desired minute volume. The SIMV rate is automatically adjusted to maintain minute ventilation.

Objective: To evaluate MMV in a cohort of infants without parenchymal lung disease alternately ventilated by MMV and SIMV.

An infant with Kasabach-Merritt syndrome with associated renal hematoma and intussusception.

A neonate that had a forearm hemangioma, gross hematuria, and a renal parenchymal hematoma was found to have Kasabach-Merritt syndrome. He subsequently returned to our hospital and was found to have an intussusception secondary to an intestinal hemangioma.