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Pritting C, Ahmad D, Patel K, Miyamoto T, Rajab TK, Rajapreyar IN, Massey HT, Tchantchaleishvili V. Microaxial mechanical circulatory support after orthotopic heart transplantation. Int J Artif Organs 2024; 47:173-180. [PMID: 38372215 DOI: 10.1177/03913988231213722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
AIM Use of microaxial mechanical circulatory support (MCS) has been reported for severe graft rejection or dysfunction after heart transplantation (HTx). We aimed to assess utilization patterns of microaxial MCS after HTx in adolescents (ages 18 and younger) and adults (ages 19 and older). METHODS Electronic search was performed to identify all relevant studies on post-HTx use of microaxial support in adults and adolescents. A total of 18 studies were selected and patient-level data were extracted for statistical analysis. RESULTS All patients (n=23), including adults (n=15) and adolescents (n=8), underwent Impella (Abiomed, Danvers, MA) microaxial MCS after HTx. Median age was 36 [IQR 18-56] years (Adults, 52 [37-59]; adolescents, 16 [15-17]). Primary right ventricular graft dysfunction was an indication exclusively seen in the adults 40% (6/15), while acute graft rejection was present in 46.7% (7/15) of adults. Median time after transplant was 9 [0-32] months (Adults, 4 [0-32]; adolescents, 11 [4.5, 45]). Duration of Impella support was comparable between adults and adolescents (5 [2.5-8] vs 6 [5-8] days, p = 0.38). Overall improvement was observed both in median LV ejection fraction (23.5% [11.3-28] to 42% [37.8-47.3], p < 0.01) and cardiac index (1.8 [1.2-2.6] to 3 [2.5-3.1], p < 0.01). Retransplantation was required in four adolescents (50%, 4/8). Survival to discharge was achieved by 60.0% (9/15) of adults and 87.5% (7/8) of adolescents respectively (p = 0.37). CONCLUSION Indications for microaxial MCS appear to vary between adult and adolescent patients. Overall improvement in LVEF and cardiac index was observed, however, with suboptimal survival to discharge.
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Affiliation(s)
| | - Danial Ahmad
- Division of Cardiac Surgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Keyur Patel
- Division of Cardiac Surgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Takuma Miyamoto
- Division of Cardiac Surgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Taufiek K Rajab
- Division of Cardiothoracic Surgery, Medical University of South Carolina, Charleston, SC, USA
| | | | - Howard T Massey
- Division of Cardiac Surgery, Thomas Jefferson University, Philadelphia, PA, USA
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2
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Bearl DW, Jeewa A, Auerbach SR, Azeka E, Phelps C, Sacks LD, Rosenthal D, Conway J. Clinical approach to mechanical circulatory support in the transplant patient from the Pediatric Heart Transplant Society. Pediatr Transplant 2022; 26:e14391. [PMID: 36377328 DOI: 10.1111/petr.14391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 08/04/2022] [Accepted: 08/29/2022] [Indexed: 11/16/2022]
Abstract
The use of mechanical circulatory support (MCS) for pediatric patients who have undergone heart transplant has grown rapidly in the past decade. This includes support in the immediate post-transplant period and "rescue" therapy for patient later in their transplant course. Extracorporeal membrane oxygenation (ECMO) remains a standard modality of support for intraoperative concerns and for acute decompensation in the immediate post-transplant period. However, both pulsatile and continuous flow ventricular assist devices (VADs) have been used with increasing success in transplant patients for longer durations of support. Centers participating in the Pediatric Heart Transplant Society (PHTS) were queried to provide their internal protocols and rationale for mechanical circulatory support following heart transplant. These protocols coupled with evidence-based literature were used to provide the following description of clinical approaches to MCS in the transplant patient highlighting areas of both broad consensus and significant practice variation.
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Affiliation(s)
- David W Bearl
- Department of Pediatric Cardiology, Monroe Carell Jr. Children's Hospital, Nashville, Tennessee, USA
| | - Aamir Jeewa
- Department of Cardiology, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Scott R Auerbach
- Pediatrics, Division of Cardiology, Denver Anschutz Medical Campus, Children's Hospital Colorado Aurora, University of Colorado, Aurora, Colorado, USA
| | - Estela Azeka
- Heart Institute (InCor) University of Sao Paulo Medical School, Sao Paulo, Brazil
| | - Christina Phelps
- Heart Center, Nationwide Children's Hospital, Columbus, Ohio, USA
| | - Loren D Sacks
- Pediatric Cardiology, Stanford Univeristy School of Medicine, Palo Alto, California, USA
| | - David Rosenthal
- Pediatric Cardiology, Stanford Univeristy School of Medicine, Palo Alto, California, USA
| | - Jennifer Conway
- Stollery Children's Hospital, University of Alberta, Edmonton, Alberta, Canada
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3
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Krauss A, Pidborochynski T, Buchholz H, Urschel S, Al-Akalabi M, Freed DH, Anand V, Holinkski P, Bates A, Conway J. Ventricular assist device support following pediatric heart transplantation. Pediatr Transplant 2022; 26:e14363. [PMID: 35841596 DOI: 10.1111/petr.14363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 06/17/2022] [Accepted: 06/23/2022] [Indexed: 10/17/2022]
Abstract
BACKGROUND VAD support for early graft failure after HTx is a rare event in pediatrics. METHODS We retrospectively describe our single-center experience with post-HTx VAD support in a cohort of patients transplanted between 01/05 and 12/20. RESULTS Nine patients underwent VAD insertion in the early post-HTx period [median age 6.1 years (Range 0.3-20.3), median weight 17.6 kg (Range 3.5-65.0), and congenital heart disease (67%)]. Of the nine patients with early graft failure, almost half (44%) were implanted after 2015 and all of these patients had a pre-HTx plan for possible post-transplant VAD insertion. Time to VAD implant was a median of 0 day (Range 0-11). Total time on VAD support was a median of 12 days (Range 3.0-478.0). Two-thirds (n = 6; 67%) of the patients were weaned from support, retransplanted (11%) and two patients died (22%). In all of the patients where post-HTx VAD was anticipated there was 100% survival. CONCLUSIONS In this small patient series, post-HTx VAD was a useful measure in selected patients especially with pre-HTx planning. However, more shared experiences to verify these findings are needed.
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Affiliation(s)
- Annemarie Krauss
- Division of Pediatric Cardiology at the University of Alberta, Edmonton, Alberta, Canada
| | - Tara Pidborochynski
- Division of Pediatric Cardiology at the University of Alberta, Edmonton, Alberta, Canada
| | - Holger Buchholz
- Division of Cardiac Surgery, University of Alberta, Edmonton, Alberta, Canada
| | - Simon Urschel
- Division of Pediatric Cardiology at the University of Alberta, Edmonton, Alberta, Canada
| | - Mohammed Al-Akalabi
- Division of Cardiac Surgery, University of Alberta, Edmonton, Alberta, Canada.,Division of Pediatric Cardiac Surgery, Stollery Children's Hospital, Edmonton, Alberta, Canada
| | - Darren H Freed
- Division of Cardiac Surgery, University of Alberta, Edmonton, Alberta, Canada.,Division of Pediatric Cardiac Surgery, Stollery Children's Hospital, Edmonton, Alberta, Canada
| | - Vijay Anand
- Pediatric Critical Care, University of Alberta, Edmonton, Alberta, Canada
| | - Paula Holinkski
- Pediatric Critical Care, University of Alberta, Edmonton, Alberta, Canada
| | - Angela Bates
- Pediatric Critical Care, University of Alberta, Edmonton, Alberta, Canada
| | - Jennifer Conway
- Division of Pediatric Cardiology at the University of Alberta, Edmonton, Alberta, Canada
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Godown J, Bearl DW, Thurm C, Hall M, Feingold B, Soslow JH, Mettler BA, Smith AH, Profita EL, Singh TP, Dodd DA. Extracorporeal membrane oxygenation use in the first 24 hours following pediatric heart transplantation: Incidence, risk factors, and outcomes. Pediatr Transplant 2019; 23:e13414. [PMID: 30973190 PMCID: PMC6548572 DOI: 10.1111/petr.13414] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Accepted: 03/11/2019] [Indexed: 01/18/2023]
Abstract
Primary graft dysfunction following HTx is associated with significant morbidity and mortality. This study aimed to assess the incidence of, risk factors for, and outcomes of children requiring ECMO within 24 hours of HTx. This study utilized a linked PHIS/SRTR database of pediatric HTx recipients (2002-2016). Post-HTx ECMO was identified using inpatient billing data. Logistic regression assessed risk factors for post-HTx ECMO. Kaplan-Meier analyses assessed in-hospital mortality and post-discharge survival. A total of 2820 patients were included with 224 (7.9%) requiring ECMO. Independent risk factors for post-HTx ECMO include age <1 year (aOR: 2.2, 95% CI: 1.3-3.7, P = 0.006) or 1-5 years (aOR: 2.1, 95% CI: 1.3-3.4, P = 0.002), and ECMO support at HTx (aOR: 27.4, 95% CI: 15.2-49.6, P < 0.001). Survival to discharge decreased with increasing duration of post-HTx ECMO support; 89% for 1-3 days, 79.1% for 4-6 days, 63.2% for 7-9 days, and 18.8% for ≥10 days. There was no difference in long-term survival for patients requiring post-HTx ECMO who survived to hospital discharge (P = 0.434). There are identifiable risk factors associated with the need for ECMO in the post-HTx period. Length of time on ECMO post-HTx is strongly associated with the risk of in-hospital mortality. Patients who require ECMO early post-HTx and survive to discharge have comparable outcomes to patients who did not require ECMO.
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Affiliation(s)
- Justin Godown
- Pediatric Cardiology, Monroe Carell Jr. Children’s Hospital, Nashville, TN
| | - David W. Bearl
- Pediatric Cardiology, Monroe Carell Jr. Children’s Hospital, Nashville, TN
| | - Cary Thurm
- Children’s Hospital Association, Lenexa, KS
| | - Matt Hall
- Children’s Hospital Association, Lenexa, KS
| | - Brian Feingold
- Pediatrics and Clinical and Translational Science, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Jonathan H. Soslow
- Pediatric Cardiology, Monroe Carell Jr. Children’s Hospital, Nashville, TN
| | - Bret A. Mettler
- Pediatric Cardiothoracic Surgery, Monroe Carell Jr. Children’s Hospital, Nashville, TN
| | - Andrew H. Smith
- Pediatric Critical Care, Monroe Carell Jr. Children’s Hospital, Nashville, TN
| | - Elizabeth L. Profita
- Pediatric Cardiology, Lucile Packard Children’s Hospital at Stanford, Palo Alto, CA
| | | | - Debra A. Dodd
- Pediatric Cardiology, Monroe Carell Jr. Children’s Hospital, Nashville, TN
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5
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Cardiac transplantation in children. BJA Educ 2019; 19:105-112. [DOI: 10.1016/j.bjae.2019.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/08/2019] [Indexed: 11/30/2022] Open
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Mowers KL, Simpson KE, Gazit AZ, Eghtesady P, Canter CE, Castleberry CD. Moderate-severe primary graft dysfunction after pediatric heart transplantation. Pediatr Transplant 2019; 23:e13340. [PMID: 30609166 DOI: 10.1111/petr.13340] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 10/16/2018] [Accepted: 10/24/2018] [Indexed: 11/28/2022]
Abstract
BACKGROUND PGD is a complication after heart transplantation (OHT) and a significant cause of mortality, particularly in infant recipients. Lack of standardized definition of PGD in the pediatric population makes the prevalence and magnitude of impact unclear. METHODS ISHLT PGD consensus guidelines, which include inotrope scores and need for MCS, were applied retrospectively to 208 pediatric OHT recipients from a single institution from 1/2005-5/2016. PGD was defined as: moderate PGD-inotrope score >10 on postoperative day 1 (24-48 hours), and severe PGD-MCS within 24 hours (in the absence of detectable rejection). RESULTS PGD occurred in 34 patients (16.3%); 14 of which had severe PGD (6.7%). Multivariate risk factors for PGD included CPB time (OR 10.3/10 min, 95% 10.05, 10.2, P = 0.03), Fontan palliation (OR 1.9, 95% 1.2, 3.97), and PCM (OR 5.65, 95% 1.52, 22.4); but not age, weight, ischemic time, or donor characteristics. Upon sub-analysis excluding patients with PCM, increased CPB was a significant multivariate risk factor (OR 10.09, 95% 9.89, 10.12, P = 0.003). Patients with PGD had decreased discharge survival compared to those without PGD (85% vs 96%, P < 0.01). Severe PGD was associated with the poorest 1-year survival (57% vs 91% without PGD, P = 0.04). CONCLUSION Patients with prolonged CPB are potentially at risk for developing PGD. Neither infant recipients nor donor characteristics were associated with an increased risk of PGD in the current era.
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Affiliation(s)
- Katie L Mowers
- Washington University School of Medicine/St. Louis Children's Hospital, St. Louis, Missouri
| | - Kathleen E Simpson
- Washington University School of Medicine/St. Louis Children's Hospital, St. Louis, Missouri
| | - Avihu Z Gazit
- Washington University School of Medicine/St. Louis Children's Hospital, St. Louis, Missouri
| | - Pirooz Eghtesady
- Washington University School of Medicine/St. Louis Children's Hospital, St. Louis, Missouri
| | - Charles E Canter
- Washington University School of Medicine/St. Louis Children's Hospital, St. Louis, Missouri
| | - Chesney D Castleberry
- Washington University School of Medicine/St. Louis Children's Hospital, St. Louis, Missouri
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7
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Utilization and Outcomes of Temporary Mechanical Circulatory Support for Graft Dysfunction After Heart Transplantation. ASAIO J 2018; 63:695-703. [PMID: 28906273 DOI: 10.1097/mat.0000000000000599] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Graft dysfunction is the main cause of early mortality after heart transplantation. In cases of severe graft dysfunction, temporary mechanical circulatory support (TMCS) may be necessary. The aim of this systematic review was to examine the utilization and outcomes of TMCS in patients with graft dysfunction after heart transplantation. Electronic search was performed to identify all studies in the English literature assessing the use of TMCS for graft dysfunction. All identified articles were systematically assessed for inclusion and exclusion criteria. Of the 5,462 studies identified, 41 studies were included. Among the 11,555 patients undergoing heart transplantation, 695 (6.0%) required TMCS with patients most often supported using venoarterial extracorporeal membrane oxygenation (79.4%) followed by right ventricular assist devices (11.1%), biventricular assist devices (BiVADs) (7.5%), and left ventricular assist devices (LVADs) (2.0%). Patients supported by LVADs were more likely to be supported longer (p = 0.003), have a higher death by cardiac event (p = 0.013) and retransplantation rate (p = 0.015). In contrast, patients supported with BiVAD and LVAD were more likely to be weaned off support (p = 0.020). Overall, no significant difference was found in pooled 30 day survival (p = 0.31), survival to discharge (p = 0.19), and overall survival (p = 0.51) between the subgroups. Temporary mechanical circulatory support is an effective modality to support patients with graft dysfunction after heart transplantation. Further studies are needed to establish the optimal threshold and strategy for TMCS and to augment cardiac recovery and long-term survival.
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Kleinmahon JA, Patel SS, Auerbach SR, Rossano J, Everitt MD. Hearts transplanted after circulatory death in children: Analysis of the International Society for Heart and Lung Transplantation registry. Pediatr Transplant 2017; 21. [PMID: 28940999 DOI: 10.1111/petr.13064] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/25/2017] [Indexed: 11/25/2022]
Abstract
We aimed to describe worldwide DCD HT experience in children using the International Society for Heart and Lung Transplantation Registry. The Registry was queried for primary HT performed in children (2005-2014). Kaplan-Meier analysis was used to assess survival for recipients grouped by DCD or DBD hearts. Recipient characteristics were compared between DCD and DBD and between survivors and non-survivors of DCD HT. Among 3877 pediatric HT performed, 21 (0.5%) were DCD. DCD 1-year survival was 61% vs 91% DBD, P < .01. DCD recipients were more often supported by ECMO pre-HT (24% vs 6%, P < .001) and more often receiving inhaled nitric oxide (10% vs 0.6%, P < .001) compared to DBD. Older DCD recipients had significantly lower 1-year survival of 57% vs 93% for DBD, P < .01. Survival for infant DCD recipients was not statistically different to DBD recipients (survival 62% at 1 year and 62% at 5 years for DCD vs 85% at 1 year and 77% at 5 years for DBD, P = .15). Recipients of DCD HT who died were more often supported by ECMO pre-HT (56% non-survivors vs 0% survivors, P = .004) and receiving mechanical ventilation (44% vs 0%, P = .012). DCD HT is uncommon in children. DCD-independent factors in recipients may have contributed to worse survival as DCD recipients who died were more often supported by ECMO and mechanical ventilation. More research is needed to identify donor factors and recipient factors that contribute to mortality after DCD HT.
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Affiliation(s)
- Jake A Kleinmahon
- Division of Cardiology, Children's Hospital Colorado, University of Colorado, Aurora, CO, USA
| | - Sonali S Patel
- Division of Cardiology, Children's Hospital Colorado, University of Colorado, Aurora, CO, USA
| | - Scott R Auerbach
- Division of Cardiology, Children's Hospital Colorado, University of Colorado, Aurora, CO, USA
| | - Joseph Rossano
- Cardiology, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Melanie D Everitt
- Division of Cardiology, Children's Hospital Colorado, University of Colorado, Aurora, CO, USA
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Raj S, Ruiz P, Rusconi P. Early primary graft failure after a pediatric heart transplant and successful rescue with plasmapheresis, immunoglobulins, and alemtuzumab. Ann Pediatr Cardiol 2017; 10:69-71. [PMID: 28163432 PMCID: PMC5241849 DOI: 10.4103/0974-2069.197063] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Early primary graft failure after pediatric orthotopic heart transplantation (OHT) has a high mortality rate and can occur due to several causes including but not limited to prolonged graft ischemia time, suboptimal preimplant myocardial preservation, hyperacute rejection, and maladaptation of the graft to the host's hemodynamic status. Mechanical circulatory support with either extracorporeal membrane oxygenation (ECMO) or ventricular assist device has been used for the rescue of primary graft failure in pediatric patients after heart transplant. Cardiac arrest before ECMO initiation in these patients is associated with adverse neurologic outcome although those surviving to hospital discharge generally have excellent long-term outcome. We report a case of early primary graft failure after OHT who required ECMO support and successful rescue with plasmapheresis, immunoglobulins, and alemtuzumab.
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Affiliation(s)
- Shashi Raj
- Department of Pediatrics, Division of Pediatric Cardiology, Holtz Children's Hospital/Jackson Health System, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Phillip Ruiz
- Department of Surgery, Transplantation Laboratories, Jackson Health System, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Paolo Rusconi
- Department of Pediatrics, Division of Pediatric Cardiology, Holtz Children's Hospital/Jackson Health System, University of Miami Miller School of Medicine, Miami, FL, USA
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10
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Di Nardo M, MacLaren G, Marano M, Cecchetti C, Bernaschi P, Amodeo A. ECLS in Pediatric Cardiac Patients. Front Pediatr 2016; 4:109. [PMID: 27774445 PMCID: PMC5053996 DOI: 10.3389/fped.2016.00109] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 09/22/2016] [Indexed: 11/13/2022] Open
Abstract
Extracorporeal life support (ECLS) is an important device in the management of children with severe refractory cardiac and or pulmonary failure. Actually, two forms of ECLS are available for neonates and children: extracorporeal membrane oxygenation (ECMO) and use of a ventricular assist device (VAD). Both these techniques have their own advantages and disadvantages. The intra-aortic balloon pump is another ECLS device that has been successfully used in larger children, adolescents, and adults, but has found limited applicability in smaller children. In this review, we will present the "state of art" of ECMO in neonate and children with heart failure. ECMO is commonly used in a variety of settings to provide support to critically ill patients with cardiac disease. However, a strict selection of patients and timing of intervention should be performed to avoid the increase in mortality and morbidity of these patients. Therefore, every attempt should be done to start ECLS "urgently" rather than "emergently," before the presence of dysfunction of end organs or circulatory collapse. Even though exciting progress is being made in the development of VADs for long-term mechanical support in children, ECMO remains the mainstay of mechanical circulatory support in children with complex anatomy, particularly those needing rapid resuscitation and those with a functionally univentricular circulation. With the increase in familiarity with ECMO, new indications have been added, such as extracorporeal cardiopulmonary resuscitation (ECPR). The literature supporting ECPR is increasing in children. Reasonable survival rates have been achieved after initiation of support during active compressions of the chest following in-hospital cardiac arrest. Contraindications to ECLS have reduced in the last 5 years and many centers support patients with functionally univentricular circulations. Improved results have been recently achieved in this complex subset of patients.
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Affiliation(s)
- Matteo Di Nardo
- Pediatric Intensive Care Unit, Children's Hospital Bambino Gesù , Rome , Italy
| | - Graeme MacLaren
- Cardiothoracic Intensive Care Unit, National University Health System, Singapore; Paediatric Intensive Care Unit, Department of Paediatrics, The Royal Children's Hospital, University of Melbourne, Parkville, VIC, Australia
| | - Marco Marano
- Pediatric Intensive Care Unit, Children's Hospital Bambino Gesù , Rome , Italy
| | - Corrado Cecchetti
- Pediatric Intensive Care Unit, Children's Hospital Bambino Gesù , Rome , Italy
| | - Paola Bernaschi
- Microbiology Unit, Children's Hospital Bambino Gesù , Rome , Italy
| | - Antonio Amodeo
- ECMO and VAD Unit, Children's Hospital Bambino Gesù , Rome , Italy
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11
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Foster BJ, Dahhou M, Zhang X, Dharnidharka V, Ng V, Conway J. High Risk of Graft Failure in Emerging Adult Heart Transplant Recipients. Am J Transplant 2015; 15:3185-93. [PMID: 26189336 DOI: 10.1111/ajt.13386] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 04/26/2015] [Accepted: 05/19/2015] [Indexed: 01/25/2023]
Abstract
Emerging adulthood (17-24 years) is a period of high risk for graft failure in kidney transplant. Whether a similar association exists in heart transplant recipients is unknown. We sought to estimate the relative hazards of graft failure at different current ages, compared with patients between 20 and 24 years old. We evaluated 11 473 patients recorded in the Scientific Registry of Transplant Recipients who received a first transplant at <40 years old (1988-2013) and had at least 6 months of graft function. Time-dependent Cox models were used to estimate the association between current age (time-dependent) and failure risk, adjusted for time since transplant and other potential confounders. Failure was defined as death following graft failure or retransplant; observation was censored at death with graft function. There were 2567 failures. Crude age-specific graft failure rates were highest in 21-24 year olds (4.2 per 100 person-years). Compared to individuals with the same time since transplant, 21-24 year olds had significantly higher failure rates than all other age periods except 17-20 years (HR 0.92 [95%CI 0.77, 1.09]) and 25-29 years (0.86 [0.73, 1.03]). Among young first heart transplant recipients, graft failure risks are highest in the period from 17 to 29 years of age.
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Affiliation(s)
- B J Foster
- Division of Nephrology, Department of Pediatrics, Montreal Children's Hospital, McGill University Faculty of Medicine, Montreal, Quebec, Canada.,Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada.,Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Quebec, Canada
| | - M Dahhou
- Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - X Zhang
- Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - V Dharnidharka
- Division of Nephrology, Department of Pediatrics, Washington University School of Medicine, St. Louis, MO.,St. Louis Children's Hospital, St. Louis, MO
| | - V Ng
- Division of Gastroenterology, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - J Conway
- Division of Cardiology, Department of Pediatrics, Stollery Children's Hospital, University of Alberta, Edmonton, Alberta, Canada
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Affiliation(s)
- Christina J. VanderPluym
- From the Department of Cardiology, Children’s Hospital Boston, Boston, MA (C.J.V., E.D.B.); and Department of Cardiac Surgery, Children’s Hospital Boston and the Department of Pediatrics and Surgery, Harvard Medical School, Boston, MA (F.F.-T.)
| | - Francis Fynn-Thompson
- From the Department of Cardiology, Children’s Hospital Boston, Boston, MA (C.J.V., E.D.B.); and Department of Cardiac Surgery, Children’s Hospital Boston and the Department of Pediatrics and Surgery, Harvard Medical School, Boston, MA (F.F.-T.)
| | - Elizabeth D. Blume
- From the Department of Cardiology, Children’s Hospital Boston, Boston, MA (C.J.V., E.D.B.); and Department of Cardiac Surgery, Children’s Hospital Boston and the Department of Pediatrics and Surgery, Harvard Medical School, Boston, MA (F.F.-T.)
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Abstract
The management of the pediatric patient with the failing ventricle poses its own therapeutic challenges, not least because patient size limits options available. Once medical management has hit its ceiling, attention is turned to surgical options for mechanical support. The approach to these options has to bear in mind that there may be many potential causes for pump failure, and that these occur often in the context of pulmonary hypertension and poor gas exchange. Although extracorporeal life support has been the mainstay of treatment for acute heart failure, in the last decade, attention has been focusing on longer-term options to bridge to recovery or eventual transplant. Added to this are more novel applications of ventricular assist devices, notable in the management of the failing Fontan circulation where there are no perfect solutions. There is growing interest in the use of such devices to power this delicate circulation and extend the functional capacity of patients without resorting to transplantation. In this review article, we explore the role each of these surgical modalities has to play in the management of the child with acute and chronic heart failure, and explore the recent developments in the rapidly growing field of pediatric ventricular assist.
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14
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Impact of medication non-adherence on survival after pediatric heart transplantation in the U.S.A. J Heart Lung Transplant 2013; 32:881-8. [PMID: 23755899 DOI: 10.1016/j.healun.2013.03.008] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2012] [Revised: 03/09/2013] [Accepted: 03/19/2013] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Medication non-adherence (NA) can result in life-threatening illness in children after solid-organ transplantation. Little is known about the incidence, risk factors and outcomes of NA in large numbers of pediatric heart transplant (HT) recipients. METHODS Organ Procurement Transplant Network (OPTN) data were used to identify all children <18 years of age in the U.S.A. who underwent HT from October 1999 to January 2007. Cox proportional hazards analysis was used to identify risk factors for NA and the effect on graft survival. RESULTS Of 2,070 pediatric heart transplants performed the median age at transplant was 6 years (interquartile range [IQR] 0 to 13 years); 40% had congenital heart disease (CHD), 7% were re-transplants, 42% were non-white and 43% had Medicaid insurance. Overall, 186 (9%) children had a report of NA at a median age of 15 years with more than two-thirds of NA episodes occurring after 12 years of age. Factors independently associated with NA were: adolescent age at transplant (hazard ratio [HR] 7.0, 95% confidence interval [CI] 4.1 to 12, compared with infants); black race (HR 2.3, 95% CI 1.7 to 3.3, compared with white); Medicaid insurance (HR 2.0, 95% CI 1.5 to 2.7, compared with non-Medicaid insurance); and ventilator or ventricular assist device (VAD) support at transplant. The risk of mortality conditional upon report of NA was 26% at 1 year and 33% at 2 years. CONCLUSIONS Medication NA is an important problem in pediatric HT recipients and is associated with high mortality. Adolescent age, black race, Medicaid insurance and invasive hemodynamic support at transplant were associated with NA, whereas time on the wait list and gender were not. Targeted interventions among at-risk populations may be warranted.
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Abstract
OBJECTIVES The purpose of this review was to provide a systematic review of the literature regarding the use of extracorporeal life support (ECLS) in various specialized conditions, as part of the Pediatric Cardiac Intensive Care Society/Extracorporeal Life Support Organization Joint Statement on Mechanical Circulatory Support. DATA SOURCES MEDLINE and PubMed. STUDY SELECTION Searches for published abstracts and articles were conducted using the following MeSH terms: extracorporeal life support, extracorporeal membrane oxygenation, or mechanical support, and pediatric or children. DATA EXTRACTION Abstracts of all articles including case reports were reviewed; the full article was reviewed if the abstract indicated that it focused on extracorporeal life support for conditions other than primary respiratory disease or persistent pulmonary hypertension of the newborn and described outcomes such as survival to hospital discharge. Studies with potential overlapping patients were highlighted in the review process and summary results. DATA SYNTHESIS Classification of recommendations and level of evidence are expressed in the American College of Cardiology Foundation/American Heart Association format. CONCLUSIONS The majority of specialized situations where extracorporeal life support is used fall into the category of class II-III evidence. Class I indications for extracorporeal life support in the pediatric population include myocarditis and in the context of acute interventions in the cardiac catheterization laboratory.
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Hetzer R, Delmo Walter EM. Rescue mechanical circulatory support for failing transplanted hearts. Eur J Cardiothorac Surg 2012; 42:702-3. [PMID: 22723620 DOI: 10.1093/ejcts/ezs351] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Roland Hetzer
- Department of Cadiothoracic and Vascular Surgery, Deutsches Herzzentrum Berlin, Berlin, Germany
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