Publications by authors named "Freiberger D"

Reduced exercise capacity is common in young bilateral lung transplantation (Bi-LTx) recipients, but longer-term data on cardiac comorbidities are limited. We evaluate potential cardiac contributions to long-term exercise intolerance in this population. All Bi-LTx recipients at a single pediatric center, who completed routine clinical post-transplant cardiac assessment, including echocardiogram, cardiac exam, and cardiopulmonary exercise testing (CPET), were included.

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Background: The stabilization of metastatic lesions in the periacetabular region can be successfully performed using percutaneous techniques. Photodynamic nails (PDNs) are among the available tools for stabilization. Data on postoperative complications and functional outcomes are, however, scarce.

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Background: Gastrointestinal (GI) complications in lung transplant recipients can occur any time during the post-operative period, leading to prolonged morbidity and mortality. Despite the negative association between GI complications and patient outcomes, little is known about their incidence and risk factors for their development in pediatric lung transplant recipients.

Methods: We performed a retrospective chart review at one pediatric tertiary center to describe the frequency of GI complications in lung transplant recipients.

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Background: In order to improve transparency within the patient selection process, a transplant listing advisory committee was formed within the Boston Children's Hospital Pediatric Transplant Center. Its mission is to promote equity in access to organ transplantation by ensuring that the institutional transplant selection criteria are fair, unbiased, and nondiscriminatory. The committee conducts comprehensive case and data review of individual characteristics and reviews in aggregate to identify potential systems bias.

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Background: This study aimed to characterize features present at the time of diagnosis and describe outcomes in patients with post-transplant lymphoproliferative disorder (PTLD) following pediatric solid organ transplantation.

Methods: We performed a retrospective review of solid organ transplant patients who developed pathologically confirmed PTLD at our center from 2006 to 2016.

Results: Of 594 patients included in this study, 41(6.

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Introduction: Bile reflux may cause for lung allograft rejection, yet there are no studies that determine (i) the relationship between gastric and lung bile concentrations, (ii) whether bile is present in lungs of nontransplant patients, (iii) the relationship between gastric dysmotility and lung bile, (iv) the impact of reflux therapies on lung bile, and (v) whether lung bile worsens outcomes in nontransplant patients. This study will address these gaps in the literature.

Methods: We prospectively recruited lung transplant (LTX) patients and nontransplant patients with respiratory symptoms (RP) and collected paired gastric and lung samples.

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Background: Delayed gastric emptying has been associated with increased graft rejection, although the mechanism of this association is not known. This study aims to investigate the interrelationship between delays in gastrointestinal motility and the diversity and composition of gastric, oropharyngeal, and lung microbiomes in pediatric lung transplant recipients.

Methods: We prospectively recruited 23 pediatric lung transplant recipients and 98 pediatric patients with respiratory symptoms undergoing combined endoscopy and bronchoscopy.

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Background: It is generally accepted that patients who have greater functional capacity are better candidates for lung transplantation. Accurate assessment of physical condition is important in identifying appropriate candidates for transplant. The focus of this study was to determine which measures of pretransplant physical condition correlate with positive post-transplant outcomes in children undergoing lung transplant.

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The process of developing a 3-tiered advanced practice RN (APRN) competency-based professional advancement model at Boston Children's Hospital is described. The model recognizes the contributions of entry-level and expert APRNs to advanced clinical practice and outcomes, impact, and leadership, while incorporating the tenets of Patricia Benner's Novice to Expert Model and the American Association of Critical- Care Nurses Synergy Model of Care.

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Background: Gastroesophageal reflux disease is thought to predispose to adverse lung allograft outcomes. However, little is known about the burden of gastroesophageal reflux (GER) and gastroparesis in pediatric patients. In this study we describe the burden of reflux and gastroparesis in children undergoing lung transplant, and evaluates their impact on allograft survival and rejection incidence.

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Pediatric lung transplantation is a lifesaving option for patients with end stage lung disease, although the scarcity of suitable donor organs results in long wait times and increased waitlist mortality. Many pediatric centers consider mechanical ventilatory support, such as long-term invasive ventilation and ECMO, a contraindication to lung transplantation. We hypothesized that current survival rates and outcomes for patients on mechanical ventilatory support in the pre-transplant period were not remarkably different.

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The National Organ Transplant Act stipulates that deceased donor organs should be justly and wisely allocated based on sound medical criteria. Allocation schemes are consistent across the country, and specific policies are publicly vetted. Patient selection criteria are largely in the hands of individual organ transplant programs, and consistent standards are less evident.

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High-risk (carcinogenic) genotype human papillomavirus (HPV) infections can be associated with significant morbidity in the immunocompromised solid organ transplant (SOT) recipient. Immunosuppression-associated persistent infection can predispose to the development of rapidly progressive high-grade squamous intraepithelial lesions (HSIL) in this population. We present a case report of an adolescent bilateral lung transplant recipient who developed HSIL of the esophagus, cervix, and skin secondary to HPV.

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End-of-life care is a component of palliative care and takes a holistic, individualized approach to patients, focusing on the assessment of quality of life and its maintenance until the end of life, and beyond, for the patient's family. Transplant teams do not always make timely referrals to palliative care teams due to various clinician and perceived family barriers, an important one being the simultaneous, active care plan each patient would have alongside an end-of-life plan. Application of findings and further research specific to the pediatric solid organ population would be of significant benefit to guide transplant teams as to the most effective time to introduce end-of-life care, who to involve in ongoing discussions, and important ethical and cultural considerations to include in care planning.

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Preparing patients for transitioning to self-managed care and subsequently transferring to the adult healthcare system has become a critical process for clinicians working with pediatric transplant recipients. This paper reviews several barriers to a successful transition. These include patient barriers, caregiver barriers, and considerations within pediatric and adult centers.

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Unlabelled: The purpose of the pretransplant assessment in lung transplantation is to determine a patient's need for transplant as well as their potential survival post-procedure. In 2005, the UNOS introduced the LAS, a calculation based on multiple physiologic measures to determine need and likelihood for survival. Measures include NYHA class and the 6-MWT.

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Angioedema can result from allergic, hereditary, and acquired conditions. Hereditary angioedema (HAE) attacks are disabling at the time of occurrence and can be life threatening; they often result in hospitalization and intensive care unit admission. Although there are several variants of HAE, they share a final common pathway: unopposed activation of multiple kinins and mediators including kallikrein and bradykinin.

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Free air in the peritoneum is a portent of significant pathology in the patient with abdominal trauma. The finding of a pneumomediastinum (PM) on a thoracic computed tomography scan (CT) of a trauma patient is, however, not clinically well-defined. The objectives of this study were to evaluate the incidence, pattern, and outcome of CT-diagnosed PM in a cohort of injured patients.

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A new algorithm is introduced to efficiently estimate confidence intervals for Bayesian model predictions based on multidimensional parameter space. The algorithm locates the boundary of the smallest confidence region in the multidimensional probability density function (pdf) for the model predictions by approximating a one-dimensional slice through the mode of the pdf with splines made of pieces of normal curve with continuous z values. This computationally efficient process (of order N) reduces estimation of the lower and upper bounds of the confidence interval to a multidimensional constrained nonlinear optimization problem, which can be solved with standard numerical procedures (of order N(2) or less).

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Options for a hemodynamically stable patient with a penetrating wound to the flank or back but no peritonitis, includes serial physical examinations versus a triple-contrast CT scan. There is, however, little consensus on the minimum time for serial examinations to exclude an injury that requires an operation. Therefore, a retrospective review of patients who sustained a penetrating wound to the flank or back and were admitted to a Level I trauma center was performed.

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Study Objective: To compare the prophylactic administration of ondansetron plus droperidol, droperidol plus metoclopramide, and perphenazine to determine effects on postoperative nausea, vomiting, and sedation after laparoscopic cholecystectomy.

Design: Prospective, randomized, double-blind study.

Setting: University medical center.

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Purpose: Respiratory acidosis during carbon dioxide (CO2) insufflation has been suggested as a cause of spontaneous abortion and preterm labour following laparoscopic cholecystectomy during pregnancy. Capnography may not be adequate as a guide to adjust pulmonary ventilation during laparoscopic surgery and hence arterial carbon dioxide (PaCO2) monitoring has been recommended. We report the feasibility and benefits of transcutaneous carbon dioxide monitoring (PtcCO2) as an approach to optimise ventilation during laparoscopic surgery in pregnancy.

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Two hundred adults undergoing laparoscopic cholecystectomy were enrolled in a prospectively randomized, double-blind investigation comparing ondansetron, 4 mg (Group O) with the combination of droperidol, 0.625 mg, and metoclopramide, 10 mg (Group DM). Antiemetic drugs were administered intravenously (IV) after induction of general anesthesia (propofol, desflurane).

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Central venous lines are now common in children who need a permanent form of intravenous access. These lines frequently become infected. This study compared the effects of different antiseptics (Hibiclens [chlorhexadine 4%; Stuart Pharmaceutical, Wilmington, DE] and Betadine [povidone-iodine, Clini Pad Corp, Guilford, CT]) used to clean the skin as well as the dressings used to cover the exit site (Tegaderm [3-M Medical-Surgical Division, St Paul, MN] and gauze) on microorganism growth on the skin in a pediatric oncology population.

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