Publications by authors named "Michael Silvey"

Objective: To characterize the tolerability associated with incretin analog interchanges to equipotent or higher strengths based on an interchange process in an adult outpatient setting.

Methods: This was a retrospective chart review of adult patients receiving care through a participating family medicine or endocrinology clinic between January 1, 2022, and November 30, 2022 at a major academic medical center. An incretin analog equivalency table and protocol for interchange was created in response to ongoing shortages and need for therapy adjustments to different medications within the same class.

View Article and Find Full Text PDF

Background: Acutely ill and medically complex children frequently rely on central venous catheters (CVCs) to provide life-sustaining treatment. Unfortunately, catheter-related thrombosis (CRT) is a serious and common complication. Little is known why some with a CVC develop CRT and others develop venous thromboembolism unrelated to the CVC (non-CRT).

View Article and Find Full Text PDF

Introduction: The incidence of pediatric hospital-acquired venous thromboembolism (HA-VTE) has increased over time. Congenital heart disease (CHD) as a co-morbidity has been demonstrated to significantly increase HA-VTE risk among hospitalized children.

Objective: To identify specific risks factors for the development of HA-VTE in hospitalized children with CHD.

View Article and Find Full Text PDF

Background: Appropriate timing of central venous catheter (CVC) removal, in relation to start of anticoagulation, in children after the diagnosis of a CVC-related thrombosis (CRT) is not well established.

Objectives: This retrospective cohort study evaluated the incidence of symptomatic pulmonary embolism (PE) after CVC removal using data from the multi-institutional Children's Hospital-Acquired Thrombosis (CHAT) Consortium Registry.

Patients/methods: The CHAT Registry consists of data from children aged 0-21 years with a hospital-acquired venous thromboembolism.

View Article and Find Full Text PDF

Objectives: To create a risk model for hospital-acquired venous thromboembolism in critically ill children upon admission to an ICU.

Design: Case-control study.

Setting: ICUs from eight children's hospitals throughout the United States.

View Article and Find Full Text PDF

Objective: To identify pertinent clinical variables discernible on the day of hospital admission that can be used to assess risk for hospital-acquired venous thromboembolism (HA-VTE) in children.

Study Design: The Children's Hospital-Acquired Thrombosis Registry is a multi-institutional registry for all hospitalized participants aged 0-21 years diagnosed with a HA-VTE and non-VTE controls. A risk assessment model (RAM) for the development of HA-VTE using demographic and clinical VTE risk factors present at hospital admission was derived using weighted logistic regression and the least absolute shrinkage and selection (Lasso) procedure.

View Article and Find Full Text PDF

Epsilon gamma delta beta (εγδβ) - thalassemia is a very rare disorder that results from large deletions in the β-globin gene cluster which abolish all regional globin chain gene expression from that allele. Since it is an exceedingly rare cause of neonatal anemia and is not detected by routine newborn screening, it is usually not suspected clinically and commonly undiagnosed or misdiagnosed. In this study, we describe two patients diagnosed in our hospital with (εγδβ)-thalassemia based on the results obtained from DNA microarray analysis of their peripheral blood.

View Article and Find Full Text PDF

Background: Extended half-life (EHL) factor VIII (FVIII) and IX (FIX) products are intended to decrease the burden of prophylaxis for patients with haemophilia A or B. Whether these newer concentrates have led to meaningful clinical practice change remains vague.

Aim: To characterize the longitudinal use of standard (SHL) and EHL factor concentrates at haemophilia treatment centres (HTCs), using the ATHNdataset, a US database of 138 ATHN-affiliated HTCs.

View Article and Find Full Text PDF

Background/objectives: Hospital acquired venous thromboembolism in children is associated with significant morbidity/mortality. Prevention strategies include sequential compression devices and prophylactic anticoagulation but these interventions carry risk and are poorly studied in children. Objectives were to evaluate primary thromboprophylaxis use in hospitalized children over time and the associated bleeding risk.

View Article and Find Full Text PDF

Objective: To determine thrombosis incidence, morbidities, and mortality of children with congenital heart disease who develop thrombosis after cardiac surgery.

Materials And Methods: This retrospective study reviewed patients <18 years old within the Pediatric Health Information System (PHIS) database who underwent cardiac surgery from 2004-2012. Thrombosis rates were compared for each procedure.

View Article and Find Full Text PDF

Congenital heart disease (CHD) is a common condition in the pediatric population, affecting up to 1% of all live births (i.e., around 40,000 newborns/year in the United States).

View Article and Find Full Text PDF
Inherited thrombophilia in children.

Curr Probl Pediatr Adolesc Health Care

August 2013

Thrombosis in children has multiple etiologies, including inherited disorders such as factor V Leiden mutation, prothrombin 20210A mutation, and deficiencies in protein C, S, or antithrombin. Epidemiology of the disorders varies, as does the risk of thrombosis. Venous thromboembolism is the typical presentation.

View Article and Find Full Text PDF

Transgenic mice represent a unique opportunity in biomedical research to discover the genes underlying disease and understand how manipulating the function of single genes and proteins alters physiology in a whole animal system. These advances in biomedical research may accelerate the time between when basic discoveries are made and when the research can be 'translated', that is, when the research will positively impact the lives of patients. The purpose of this article is to present some examples of promising mouse models of human diseases.

View Article and Find Full Text PDF