Search results for: Ryan J. Butts

Items from 1 to 20 out of 26 results

article

A comprehensive strategy in donor acceptance: Impact on pediatric waitlist and heart transplant outcomes

Nathanya Baez Hernandez, Richard Kirk, Ryan Davies, Maria Bano, more

Pediatric Transplantation > 24 > 6 > n/a - n/a

Significant inter‐ and intra‐center practice variability is present in pediatric donor heart acceptability. This may contribute to variation in the donor refusal rate and may impact waitlist time, morbidity, mortality, and transplant rates. In order to reduce practice variability, our center developed and implemented a comprehensive strategy regarding donor acceptance in September 2017. The aim of...

article

Preparing for transition: The effects of a structured transition program on adolescent heart transplant patients’ adherence and transplant knowledge

Corinne M. Anton, Kristin Anton, Ryan J. Butts

Pediatric Transplantation > 23 > 7 > n/a - n/a

Transition to adult health care has become a mainstream focus in pediatric health care as a higher percentage of patients are surviving into adulthood. This study investigated the success of a structured educational transition program in improving pediatric heart transplant patients’ overall medical knowledge, medication adherence, readiness to transition, as well as parental perceptions of their...

article

The first successful pediatric heart transplant and results from the earliest era

Richard Kirk, Ryan J. Butts, Anne I. Dipchand

Pediatric Transplantation > 23 > 2 > n/a - n/a

Background The first pediatric heart transplant died 5 hours after transplant and the case was published by Kantrowitz. There is no report of the first successful case in the medical literature, nor indeed the outcome of children transplanted prior to 1982. However, we recently discovered that children from this period were entered retrospectively into the ISHLT Registry when it began and they form...

article

Comparison of basiliximab vs antithymocyte globulin for induction in pediatric heart transplant recipients: An analysis of the International Society for Heart and Lung Transplantation database

Ryan J. Butts, Anne I. Dipchand, David Sutcliffe, Maria Bano, more

Pediatric Transplantation > 22 > 4 > n/a - n/a

This study aims to compare 2 common induction strategies, basiliximab and ATG. Analysis of the ISHLT transplant registry was performed. The database was queried for pediatric heart transplants from January 1, 2000, to June 30, 2015, who had received induction with basiliximab or ATG. Primary end‐point was graft survival. Secondary end‐points included 1‐year survival and 1‐year conditional survival...

article

Echocardiographic Detection of Increased Ventricular Diastolic Stiffness in Pediatric Heart Transplant Recipients: A Pilot Study

Shahryar M. Chowdhury, Ryan J. Butts, Anthony M. Hlavacek, Carolyn L. Taylor, more

Journal of the American Society of Echocardiography > 2018 > 31 > 3 > 342-348.e1

Pediatric heart transplant recipients are at risk for increased left ventricular (LV) diastolic stiffness. However, the noninvasive evaluation of LV stiffness has remained elusive in this population. The objective of this study was to compare novel echocardiographic measures of LV diastolic stiffness versus gold-standard measures derived from pressure-volume loop (PVL) analysis in pediatric heart...

article

The Pediatric Heart Failure Workforce: An International, Multicenter Survey

Scott R. Auerbach, Melanie D. Everitt, Ryan J. Butts, David N. Rosenthal, more

Pediatric Cardiology > 2018 > 39 > 2 > 307-314

Our objective was to understand the scope of pediatric heart failure (HF) and the current staffing environment of HF programs. An online survey was distributed to members of the Pediatric Heart Transplant Study and the Pediatric Council of the International Society for Heart and Lung Transplantation. All participants received the primary 23-question survey. Additionally, HF program directors received...

article

Longer Ischemic Time is Associated with Increased Ventricular Stiffness as Measured by Pressure–Volume Loop Analysis in Pediatric Heart Transplant Recipients

Luke W. Schroeder, Shahryar M. Chowdhury, Ali L. Burnette, Minoo N. Kavarana, more

Pediatric Cardiology > 2018 > 39 > 2 > 324-328

Background The purpose of this study was to investigate the associations between clinical factors and cardiac function as measured by pressure–volume loops (PVLs) in a pediatric heart transplant cohort. Methods Patients (age < 20 years) who underwent heart transplantation presenting for a clinically indicated catheterization were enrolled. PVLs were recorded using microconductance catheters (CD...

article

A preliminary comparison of two‐dimensional speckle tracking echocardiography and pressure–volume loop analysis in patients with Fontan physiology: The role of ventricular morphology

David Steflik, Ryan J. Butts, George H. Baker, Varsha Bandisode, more

Echocardiography > 34 > 9 > 1353 - 1359

Objective Speckle tracking echocardiography (STE) may be a useful modality for assessing ventricular performance in patients with single ventricle physiology. However, STE's ability to accurately assess ventricular performance in this population is unknown. The objective of this study was to perform a preliminary comparison of STE measures of myocardial deformation to reference standard measures...

article

Effects of persistent Fontan fenestration patency on cardiopulmonary exercise testing variables

M. Elisabeth Heal, Lanier B. Jackson, Andrew M. Atz, Ryan J. Butts

Congenital Heart Disease > 12 > 4 > 399 - 402

Cardiopulmonary exercise testing (CPET) aids in clinical assessment of patients with Fontan circulation. Effects of persistent fenestration on CPET variables have not been clearly defined. Associations between fenestration and CPET variables at anaerobic threshold (AT) and peak exercise were explored in the Pediatric Heart Network Fontan Cross‐Sectional Study cohort. Fenestration patency was associated...

article

Characteristics of Clinically Diagnosed Pediatric Myocarditis in a Contemporary Multi-Center Cohort

Ryan J. Butts, Gerard J. Boyle, Shriprasad R. Deshpande, Katheryn Gambetta, more

Pediatric Cardiology > 2017 > 38 > 6 > 1175-1182

The objective of this study was to describe a contemporary cohort of pediatric patients hospitalized for clinically suspected myocarditis. A retrospective chart review was performed at seven tertiary pediatric hospitals. Electronic medical records were searched between 2008 and 2012 for patients ≤18 years admitted with an ICD-9 code consistent with myocarditis. Patients were excluded if the admitting...

article

Decline in ventricular function as a result of general anesthesia in pediatric heart transplant recipients

Justin J. Elhoff, Shahryar M. Chowdhury, Carolyn L. Taylor, Marc Hassid, more

Pediatric Transplantation > 20 > 8 > 1106 - 1110

Echocardiography is frequently performed under anesthesia during procedures such as cardiac catheterization with EMB in pediatric HTx recipients. Anesthetic agents may depress ventricular function, resulting in concern for rejection. The aim of this study was to compare ventricular function as measured by echocardiography before and during GA in 17 pediatric HTx recipients. Nearly all markers of ventricular...

article

Validation of Noninvasive Measures of Left Ventricular Mechanics in Children: A Simultaneous Echocardiographic and Conductance Catheterization Study

Shahryar M. Chowdhury, Ryan J. Butts, Carolyn L. Taylor, Varsha M. Bandisode, more

Journal of the American Society of Echocardiography > 2016 > 29 > 7 > 640-647

The accuracy of echocardiography in evaluating left ventricular contractility has not been validated in children. The objective of this study was to compare echocardiographic measures of contractility with those derived from pressure-volume loop (PVL) analysis in children.Patients with relatively normal loading conditions undergoing routine left heart catheterization were prospectively enrolled. PVLs...

article

Adverse events in children implanted with ventricular assist devices in the United States: Data from the Pediatric Interagency Registry for Mechanical Circulatory Support (PediMACS)

David N. Rosenthal, Christopher S. Almond, Robert D. Jaquiss, Christine E. Peyton, more

The Journal of Heart and Lung Transplantation > 2016 > 35 > 5 > 569-577

Ventricular assist devices (VADs) have been used in children on an increasing basis in recent years. One-year survival rates are now >80% in multiple reports. In this report we describe adverse events experienced by children with durable ventricular assist devices, using a national-level registry (PediMACS, a component of INTERMACS)PediMACS is a national registry that contains clinical data on...

article

Validation of a Simple Score to Determine Risk of Hospital Mortality After the Norwood Procedure

Shahryar M. Chowdhury, Eric M. Graham, Andrew M. Atz, Scott M. Bradley, more

Seminars in Thoracic and Cardiovascular Surgery > 2016 > 28 > 2 > 425-433

The ability to quantify patient-specific hospital mortality risk before the Norwood procedure remains elusive. This study aimed to develop an accurate and clinically feasible score to assess the risk of hospital mortality in neonates undergoing the Norwood procedure. All patients (n = 549) in the publically available Pediatric Heart Network Single Ventricle Reconstruction trial database were included...

article

Effect of Sildenafil on Pressure–Volume Loop Measures of Ventricular Function in Fontan Patients

Ryan J. Butts, Shahryar M. Chowdhury, George H. Baker, Varsha Bandisode, more

Pediatric Cardiology > 2016 > 37 > 1 > 184-191

Sildenafil has been reported to improve exercise capacity in Fontan patients, but the physiologic mechanisms behind these findings are not completely understood. The objective of this study was to study the acute effect of sildenafil on pressure–volume loop (PVL) measures of ventricular function in Fontan patients. Patients after Fontan operation who were presenting for a clinically indicated catheterization...

article

Comparison of Echocardiographic and Pressure–volume Loop Indices of Systolic Function in Patients with Single Ventricle Physiology: A Preliminary Report

Ryan J. Butts, Shahryar M. Chowdhury, Jason Buckley, Anthony M. Hlavacek, more

Congenital Heart Disease > 10 > 1 > E17 - E24

BackgroundDifferences in ventricular geometry and physiology of patients with single ventricle anatomy complicate the application of traditional, noninvasive measurements of systolic function. We compared noninvasive measures of ventricular systolic function in single ventricle patients with invasive measures to evaluate their validity in this population. MethodsA secondary analysis of patients with...

article

Estimating Equations for Cardiopulmonary Exercise Testing Variables in Fontan Patients: Derivation and Validation Using a Multicenter Cross-Sectional Database

Ryan J. Butts, Carolyn T. Spencer, Lanier Jackson, Martha E. Heal, more

Pediatric Cardiology > 2015 > 36 > 2 > 393-401

Cardiopulmonary exercise testing (CPET) is a common method of evaluating patients with a Fontan circulation. Equations to calculate predicted CPET values are based on children with normal circulation. This study aims to create predictive equations for CPET variables solely based on patients with Fontan circulation. Patients who performed CPET in the multicenter Pediatric Heart Network Fontan Cross-Sectional...

article

Effect of human leukocyte antigen-C and -DQ matching on pediatric heart transplant graft survival

Ryan J. Butts, Andrew J. Savage, Paul J. Nietert, Minoo Kavarana, more

Journal of Heart and Lung Transplantation > 2014 > 33 > 12 > 1282-1287

A higher degree of human leukocyte antigen (HLA) matching at the A, B, and DR loci has been associated with improved long-term survival after pediatric heart transplantation in multiple International Society for Heart and Lung Transplantation registry reports. The aim of this study was to investigate the association of HLA matching at the C and DQ loci with pediatric graft survival.The United Network...

article

Preoperative steroid treatment does not improve markers of inflammation after cardiac surgery in neonates: Results from a randomized trial

Eric M. Graham, Andrew M. Atz, Kimberly E. McHugh, Ryan J. Butts, more

The Journal of Thoracic and Cardiovascular Surgery > 2014 > 147 > 3 > 902-908

Neonatal cardiac surgery requiring cardiopulmonary bypass results in a heightened inflammatory response. Perioperative glucocorticoid administration is commonly used in an attempt to reduce the inflammatory cascade, although characterization of the cytokine response to steroids in neonatal cardiac surgery remains elusive because of highly variable approaches in administration. This randomized trial...

article

A composite outcome for neonatal cardiac surgery research

Ryan J. Butts, Mark A. Scheurer, Sinai C. Zyblewski, Amy E. Wahlquist, more

The Journal of Thoracic and Cardiovascular Surgery > 2014 > 147 > 1 > 428-433

The objective of this study was to determine whether a composite outcome, derived of objective signs of inadequate cardiac output, would be associated with other important measures of outcomes and therefore be an appropriate end point for clinical trials in neonatal cardiac surgery.Neonates (n = 76) undergoing cardiac operations requiring cardiopulmonary bypass were prospectively enrolled. Patients...

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Keywords

ECHOCARDIOGRAPHY (5)
FONTAN (5)
PEDIATRIC (5)
PEDIATRICS (4)
PRESSURE–VOLUME LOOP (4)
CONGENITAL HEART DISEASE (3)
HEART TRANSPLANT (3)
PEDIATRIC HEART TRANSPLANT (3)
SINGLE VENTRICLE (3)
DIASTOLIC FUNCTION (2)
HEART FAILURE (2)
OUTCOMES (2)
PRESSURE-VOLUME RELATIONSHIP (2)
ADHERENCE (1)
ADOLESCENCE (1)
ADULT CARE (1)
ALLOGRAFT SURVIVAL (1)
ANESTHESIA (1)
ANGIOTENSIN-CONVERTING ENZYME INHIBITION THERAPY (1)
ANTIBODY INDUCTION (1)
B-TYPE NATRIURETIC PEPTIDE (1)
BASILIXIMAB (1)
BNP (1)
C LOCUS (1)
CARDIAC FUNCTION (1)
CARDIAC SURGERY (1)
CARDIOPULMONARY BYPASS (1)
CARDIOPULMONARY EXERCISE TESTING (1)
CONTRACTILITY (1)
DONOR REFUSAL (1)
DQ LOCUS (1)
EXERCISE TESTING (1)
FENESTRATION (1)
FIRST (1)
GRAFT DYSFUNCTION (1)
GRAFT FUNCTION (1)
HEART TRANSPLANTATION (1)
HUMAN LEUKOCYTE ANTIGEN TYPING (1)
INDUCTION THERAPY (1)
ISCHEMIC TIME (1)
LOW CARDIAC OUTPUT SYNDROME (1)
MECHANICAL CIRCULATORY SUPPORT (1)
MORTALITY (1)
MYOCARDITIS (1)
NEONATES (1)
NORWOOD (1)
PEDIMACS (1)
POSTOPERATIVE OUTCOMES (1)
REGISTRY (1)
SCORE (1)
SCPC (1)
SILDENAFIL (1)
SINGLE-VENTRICLE HEART DISEASE (1)
SINGLE-VENTRICLE PHYSIOLOGY (1)
SPECKLE TRACKING ECHOCARDIOGRAPHY (1)
SUPERIOR CAVOPULMONARY CONNECTION SURGERY (1)
SURVEY (1)
SYSTOLIC FUNCTION (1)
TRANSITION (1)
UNIVENTRICULAR HEART (1)
VASOACTIVE INOTROPIC SCORE (1)
VENTRICULAR ASSIST DEVICE (1)
VENTRICULAR DILATION (1)
VENTRICULAR FUNCTION (1)
VENTRICULAR MECHANICS (1)
WAITLIST (1)
more

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Elsevier (9)
Springer (9)
Wiley (8)

INFONA - science communication portal

Search results for: Ryan J. Butts

A comprehensive strategy in donor acceptance: Impact on pediatric waitlist and heart transplant outcomes

Preparing for transition: The effects of a structured transition program on adolescent heart transplant patients’ adherence and transplant knowledge

The first successful pediatric heart transplant and results from the earliest era

Comparison of basiliximab vs antithymocyte globulin for induction in pediatric heart transplant recipients: An analysis of the International Society for Heart and Lung Transplantation database

Echocardiographic Detection of Increased Ventricular Diastolic Stiffness in Pediatric Heart Transplant Recipients: A Pilot Study

The Pediatric Heart Failure Workforce: An International, Multicenter Survey

Longer Ischemic Time is Associated with Increased Ventricular Stiffness as Measured by Pressure–Volume Loop Analysis in Pediatric Heart Transplant Recipients

A preliminary comparison of two‐dimensional speckle tracking echocardiography and pressure–volume loop analysis in patients with Fontan physiology: The role of ventricular morphology

Effects of persistent Fontan fenestration patency on cardiopulmonary exercise testing variables

Characteristics of Clinically Diagnosed Pediatric Myocarditis in a Contemporary Multi-Center Cohort

Decline in ventricular function as a result of general anesthesia in pediatric heart transplant recipients

Validation of Noninvasive Measures of Left Ventricular Mechanics in Children: A Simultaneous Echocardiographic and Conductance Catheterization Study

Adverse events in children implanted with ventricular assist devices in the United States: Data from the Pediatric Interagency Registry for Mechanical Circulatory Support (PediMACS)

Validation of a Simple Score to Determine Risk of Hospital Mortality After the Norwood Procedure

Effect of Sildenafil on Pressure–Volume Loop Measures of Ventricular Function in Fontan Patients

Comparison of Echocardiographic and Pressure–volume Loop Indices of Systolic Function in Patients with Single Ventricle Physiology: A Preliminary Report

Estimating Equations for Cardiopulmonary Exercise Testing Variables in Fontan Patients: Derivation and Validation Using a Multicenter Cross-Sectional Database

Effect of human leukocyte antigen-C and -DQ matching on pediatric heart transplant graft survival

Preoperative steroid treatment does not improve markers of inflammation after cardiac surgery in neonates: Results from a randomized trial

A composite outcome for neonatal cardiac surgery research

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