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Greenberg JW, Guzman-Gomez A, Kulshrestha K, Dani A, Lehenbauer DG, Chin C, Zafar F, Morales DLS. Contemporary Outcomes of Heart Transplantation in Children with Heterotaxy Syndrome: Sub-Optimal Pre-Transplant Optimization Translates into Early Post-Transplant Mortality. Pediatr Cardiol 2024; 45:1343-1352. [PMID: 36811659 DOI: 10.1007/s00246-023-03122-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 02/02/2023] [Indexed: 02/24/2023]
Abstract
Patients with heterotaxy syndrome and congenital heart disease (CHD) experience inferior cardiac surgical outcomes. Heart transplantation outcomes are understudied, however, particularly compared to non-CHD patients. Data from UNOS and PHIS were used to identify 4803 children (< 18 years) undergoing first-time heart transplant between 2003 and 2022 with diagnoses of heterotaxy (n = 278), other-CHD (n = 2236), and non-CHD cardiomyopathy (n = 2289). Heterotaxy patients were older (median 5 yr) and heavier (median 17 kg) at transplant than other-CHD (median 2 yr and 12 kg), and younger and lighter than cardiomyopathy (median 7 yr and 24 kg) (all p < 0.001). UNOS status 1A/1 at listing was not different between groups (65-67%; p = 0.683). At transplant, heterotaxy and other-CHD patients had similar rates of renal dysfunction (12 and 17%), inotropes (10% and 11%), and ventilator-dependence (19 and 18%). Compared to cardiomyopathy, heterotaxy patients had comparable renal dysfunction (9%, p = 0.058) and inotropes (46%, p = 0.097) but more hepatic dysfunction (17%, p < 0.001) and ventilator-dependence (12%, p = 0.003). Rates of ventricular assist device (VAD) were: heterotaxy-10%, other-CHD-11% (p = 0.839 vs. heterotaxy), cardiomyopathy-37% (p < 0.001 vs. heterotaxy). The 1-year incidence of acute rejection post-transplant was comparable between heterotaxy and others (p > 0.05). While overall post-transplant survival was significantly worse for heterotaxy than others (p < 0.05 vs. both), conditional 1-year survival was comparable (p > 0.3 vs. both). Children with heterotaxy syndrome experience inferior post-heart transplant survival, although early mortality appears to influence this trend, with 1-year survivors having equivalent outcomes. Given similar pre-transplant clinical status to others, heterotaxy patients are potentially under risk-stratified. Increased VAD utilization and pre-transplant end-organ function optimization may portend improved outcomes.
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Affiliation(s)
- Jason W Greenberg
- Cincinnati Children's Hospital Medical Center, The Heart Institute, University of Cincinnati School of Medicine, 3333 Burnet Ave, Cincinnati, OH, 45229, USA.
| | - Amalia Guzman-Gomez
- Cincinnati Children's Hospital Medical Center, The Heart Institute, University of Cincinnati School of Medicine, 3333 Burnet Ave, Cincinnati, OH, 45229, USA
| | - Kevin Kulshrestha
- Cincinnati Children's Hospital Medical Center, The Heart Institute, University of Cincinnati School of Medicine, 3333 Burnet Ave, Cincinnati, OH, 45229, USA
| | - Alia Dani
- Cincinnati Children's Hospital Medical Center, The Heart Institute, University of Cincinnati School of Medicine, 3333 Burnet Ave, Cincinnati, OH, 45229, USA
| | - David G Lehenbauer
- Cincinnati Children's Hospital Medical Center, The Heart Institute, University of Cincinnati School of Medicine, 3333 Burnet Ave, Cincinnati, OH, 45229, USA
| | - Clifford Chin
- Cincinnati Children's Hospital Medical Center, The Heart Institute, University of Cincinnati School of Medicine, 3333 Burnet Ave, Cincinnati, OH, 45229, USA
| | - Farhan Zafar
- Cincinnati Children's Hospital Medical Center, The Heart Institute, University of Cincinnati School of Medicine, 3333 Burnet Ave, Cincinnati, OH, 45229, USA
| | - David L S Morales
- Cincinnati Children's Hospital Medical Center, The Heart Institute, University of Cincinnati School of Medicine, 3333 Burnet Ave, Cincinnati, OH, 45229, USA
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Leibowitz JL, Awad MA, Han D, Shah A, Sun W, Zhang J, Griffith BP, Wu ZJ. In-Vivo Evaluation of a Novel Integrated Pediatric Pump Lung in a 30-Day Ovine Animal Model. ASAIO J 2024; 70:704-712. [PMID: 38446873 PMCID: PMC11288777 DOI: 10.1097/mat.0000000000002173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2024] Open
Abstract
Recently there has been increased use of mechanical circulatory support in pediatric patients as a bridge to cardiopulmonary recovery or transplantation. However, there are few devices that are optimized and approved for use in pediatric patients. We designed and prototyped a novel integrated pediatric pump lung (PPL) that underwent 30 day in-vivo testing in seven juvenile Dorset Hybrid sheep. Devices were implanted in a right atrial to pulmonary artery configuration. Six of seven sheep survived with a device functioning for 25-35 days. The device flow rate was maintained at 2.08 ± 0.34 to 2.54 ± 0.16 L/min with oxygen transfer of 109.8 ± 24.8 to 151.2 ± 26.2 ml/min over the study duration. Aside from a postoperative drop in hematocrit, all hematologic and blood chemistry test values returned to normal ranges after 1-2 weeks postoperatively. Similarly, lactate dehydrogenase increased postoperatively and returned to baseline. In two sheep, there were early device failures due to oxygenator thrombosis on postoperative days zero and five; they then had oxygenator exchanges with subsequent devices performing stably for 30 days. This study demonstrated that the integrated PPL device exhibited stable performance and acceptable biocompatibility in a 30 day ovine model.
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Affiliation(s)
- Joshua L Leibowitz
- From the Department of Surgery, University of Maryland School of Medicine, Baltimore, MD
| | - Morcos A Awad
- From the Department of Surgery, University of Maryland School of Medicine, Baltimore, MD
| | - Dong Han
- From the Department of Surgery, University of Maryland School of Medicine, Baltimore, MD
| | - Aakash Shah
- From the Department of Surgery, University of Maryland School of Medicine, Baltimore, MD
| | - Wenji Sun
- From the Department of Surgery, University of Maryland School of Medicine, Baltimore, MD
| | - Jiafeng Zhang
- From the Department of Surgery, University of Maryland School of Medicine, Baltimore, MD
| | - Bartley P Griffith
- From the Department of Surgery, University of Maryland School of Medicine, Baltimore, MD
| | - Zhongjun J Wu
- From the Department of Surgery, University of Maryland School of Medicine, Baltimore, MD
- Fischell Department of Bioengineering, A. James Clark School of Engineering, University of Maryland, College Park, MD
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Guzman-Gomez A, Greenberg JW, Dani A, Villa C, Lorts A, Boucek K, Zafar F, Morales DLS. In the era of outpatient ventricular assist devices, is it time to reconsider the practice of bridging older children to transplant on outpatient inotropes? J Thorac Cardiovasc Surg 2024; 167:2206-2214. [PMID: 37321290 PMCID: PMC10719414 DOI: 10.1016/j.jtcvs.2023.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 06/01/2023] [Accepted: 06/03/2023] [Indexed: 06/17/2023]
Abstract
OBJECTIVE Ventricular assist devices (VADs) and inotropes are feasible modalities to bridge children to heart transplant (HT) in outpatient settings. However, it is unclear which modality yields superior clinical status at HT and posttransplant survival. METHODS The United Network for Organ Sharing was used to identify patients aged 18 years or younger, weighing >25 kg, from 2012 to 2022 who were outpatients at HT (n = 835). Patients were grouped by bridging modality at HT: VAD (n = 235 [28%]), inotropes (n = 176 [21%]), or neither (no support) (n = 424 [50%]). RESULTS VAD patients were of similar age (P = .260) but heavier (P = .007) and more likely to have dilated cardiomyopathy (P < .001) than their inotrope counterparts. VAD patients had similar clinical status at HT but superior functional status (performance scale >70%) (59% vs 31%) (P < .001). Overall posttransplant survival in VAD patients (1-year and 5-year survival, 97% and 88%, respectively) was comparable to patients with no support (93% and 87%, respectively) (P = .090) and those on inotropes (98% and 83%, respectively) (P = .089). One-year conditional survival was superior for VAD vs inotrope (2-year and 6-year survival, 96% and 91%, respectively vs 97% and 79%, respectively) (P = .030) and 5-year conditional survival for VAD patients was superior to inotrope (7-year and 10-year survival, 100% and 100%, respectively vs 100% and 88%, respectively) (P = .022) and no support (100% and 83%, respectively) (P = .011). CONCLUSIONS Consistent with prior studies, short-term outcomes for pediatric patients bridged to HT in the outpatient setting with VAD or inotropes is excellent. However, compared with outpatients bridged to HT on inotropes, outpatient VAD support allowed for better functional status at HT and superior late posttransplant survival.
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Affiliation(s)
- Amalia Guzman-Gomez
- Cincinnati Children's Hospital Medical Center, The Heart Institute, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Jason W Greenberg
- Cincinnati Children's Hospital Medical Center, The Heart Institute, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Alia Dani
- Cincinnati Children's Hospital Medical Center, The Heart Institute, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Chet Villa
- Cincinnati Children's Hospital Medical Center, The Heart Institute, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Angela Lorts
- Cincinnati Children's Hospital Medical Center, The Heart Institute, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Katerina Boucek
- Cincinnati Children's Hospital Medical Center, The Heart Institute, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Farhan Zafar
- Cincinnati Children's Hospital Medical Center, The Heart Institute, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - David L S Morales
- Cincinnati Children's Hospital Medical Center, The Heart Institute, University of Cincinnati College of Medicine, Cincinnati, Ohio.
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Silva DLM, Lemouche SO, Takahashi TY, Zanon IDC, Siqueira A, Machado D, Azeka E, de Melo SL. Case Report: Sustained ventricular arrhythmia in a child supported by a Berlin heart EXCOR ventricular assist device. FRONTIERS IN TRANSPLANTATION 2024; 3:1302060. [PMID: 38993747 PMCID: PMC11235354 DOI: 10.3389/frtra.2024.1302060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 02/07/2024] [Indexed: 07/13/2024]
Abstract
Mechanical circulatory support is an established therapy to support failing hearts as a bridge to transplantation. Although tolerated overall, arrhythmias may occur after ventricular assist device implantation and can complicate patient management. We report on an infant with dilated cardiomyopathy who developed ventricular tachycardia followed by recalcitrant ventricular fibrillation, refractory to comprehensive medical therapy post Berlin Heart EXCOR® (BHE) implant.
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Affiliation(s)
| | | | | | | | - Adailson Siqueira
- Division of Congenital Heart Disease, Heart Institute (InCor), São Paulo, Brazil
| | - Desiree Machado
- Division of Pediatric Cardiology, Department of Pediatrics, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, United States
| | - Estela Azeka
- Division of Congenital Heart Disease, Heart Institute (InCor), São Paulo, Brazil
| | - Sissy Lara de Melo
- Division of Congenital Heart Disease, Heart Institute (InCor), São Paulo, Brazil
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Miyagi C, Ahmad M, Karimov JH, Polakowski AR, Karamlou T, Yaman M, Fukamachi K, Najm HK. Human fitting of pediatric and infant continuous-flow total artificial heart: visual and virtual assessment. Front Cardiovasc Med 2023; 10:1193800. [PMID: 37529709 PMCID: PMC10387526 DOI: 10.3389/fcvm.2023.1193800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Accepted: 07/03/2023] [Indexed: 08/03/2023] Open
Abstract
Background This study aimed to determine the fit of two small-sized (pediatric and infant) continuous-flow total artificial heart pumps (CFTAHs) in congenital heart surgery patients. Methods This study was approved by Cleveland Clinic Institutional Review Board. Pediatric cardiac surgery patients (n = 40) were evaluated for anatomical and virtual device fitting (3D-printed models of pediatric [P-CFTAH] and infant [I-CFTAH] models). The virtual sub-study consisted of analysis of preoperative thoracic radiographs and computed tomography (n = 3; 4.2, 5.3, and 10.2 kg) imaging data. Results P-CFTAH pump fit in 21 out of 40 patients (fit group, 52.5%) but did not fit in 19 patients (non-fit group, 47.5%). I-CFTAH pump fit all of the 33 patients evaluated. There were critical differences due to dimensional variation (p < 0.0001) for the P-CFTAH, such as body weight (BW), height (Ht), and body surface area (BSA). The cutoff values were: BW: 5.71 kg, Ht: 59.0 cm, BSA: 0.31 m2. These cutoff values were additionally confirmed to be optimal by CT imaging. Conclusions This study demonstrated the range of proper fit for the P-CFTAH and I-CFTAH in congenital heart disease patients. These data suggest the feasibility of both devices for fit in the small-patient population.
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Affiliation(s)
- Chihiro Miyagi
- Department of Biomedical Engineering, Cleveland Clinic Lerner Research Institute, Cleveland, OH, United States
| | - Munir Ahmad
- Department of Thoracic and Cardiovascular Surgery, Cleveland Clinic, Cleveland, OH, United States
| | - Jamshid H. Karimov
- Department of Biomedical Engineering, Cleveland Clinic Lerner Research Institute, Cleveland, OH, United States
- Department of Biomedical Engineering, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH, United States
| | - Anthony R. Polakowski
- Department of Biomedical Engineering, Cleveland Clinic Lerner Research Institute, Cleveland, OH, United States
| | - Tara Karamlou
- Department of Thoracic and Cardiovascular Surgery, Cleveland Clinic, Cleveland, OH, United States
| | - Malek Yaman
- Department of Pediatric Cardiology, Cleveland Clinic Children’s Hospital, Cleveland, OH, United States
| | - Kiyotaka Fukamachi
- Department of Biomedical Engineering, Cleveland Clinic Lerner Research Institute, Cleveland, OH, United States
- Department of Biomedical Engineering, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH, United States
| | - Hani K. Najm
- Department of Thoracic and Cardiovascular Surgery, Cleveland Clinic, Cleveland, OH, United States
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Berry AE, Bearl DW. Rethinking status 1A criteria in pediatric cardiac transplantation: A case for the prioritization of patients with single ventricle anatomy supported by ventricular assist devices. Front Pediatr 2023; 11:1057903. [PMID: 36911016 PMCID: PMC9998663 DOI: 10.3389/fped.2023.1057903] [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: 10/10/2022] [Accepted: 01/31/2023] [Indexed: 03/14/2023] Open
Abstract
Over the past 2 years advancements in the techniques and technology of pediatric heart transplantation have exponentially increased. However, even as the number of pediatric donor hearts has grown, demand for this limited resource continues to far outpace supply. Thus, lifesaving support in the form of ventricular assist devices (VAD) has become increasingly utilized in bridging pediatric patients to cardiac transplant. In the current pediatric heart transplant listing criteria, adopted by the United Network for Organ Sharing (UNOS) in 2016, all pediatric patients with a VAD are granted 1A status and assigned top transplant priority regardless of their underlying pathology. However, should this be the case? We suggest that the presence of a VAD alone may not be sufficient for status 1A listing. In doing so, we specifically highlight the heightened acuity, resource utilization, risk profile, and diminished outcomes in patients with single ventricle physiology supported with VAD as compared to patients with structurally normal hearts who would both be listed under 1A status. Given this, from a distributive justice perspective, we further suggest that the lack of granularity in current pediatric cardiac transplant listing categories may inadvertently lead to an inequitable distribution of donor organs and hospital resources especially as it pertains to those with single ventricle anatomy on VAD support. We propose revisiting the current listing priorities in light of improved techniques, technology, and recent data to mitigate this phenomenon. By doing this, pediatric patients with single ventricle disease might be more equitably stratified while awaiting heart transplant.
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Affiliation(s)
- Anna E Berry
- Internal Medicine-Pediatrics Residency Program, Monroe Carell Jr. Children's Hospital and Vanderbilt University Hospital, Vanderbilt University Medical Center, Nashville, TN, United States
| | - David W Bearl
- Division of Pediatric Cardiology, Department of Pediatrics, Monroe Carell Jr. Children's Hospital, Vanderbilt University Medical Center, Nashville, TN, United States
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7
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An Up-to-Date Literature Review on Ventricular Assist Devices Experience in Pediatric Hearts. LIFE (BASEL, SWITZERLAND) 2022; 12:life12122001. [PMID: 36556366 PMCID: PMC9788166 DOI: 10.3390/life12122001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/22/2022] [Accepted: 11/29/2022] [Indexed: 12/02/2022]
Abstract
Ventricular assist devices (VAD) have gained popularity in the pediatric population during recent years, as more and more children require a heart transplant due to improved palliation methods, allowing congenital heart defect patients and children with cardiomyopathies to live longer. Eventually, these children may require heart transplantation, and ventricular assist devices provide a bridge to transplantation in these cases. The FDA has so far approved two types of device: pulsatile and continuous flow (non-pulsatile), which can be axial and centrifugal. Potential eligible studies were searched in three databases: Medline, Embase, and ScienceDirect. Our endeavor retrieved 16 eligible studies focusing on five ventricular assist devices in children. We critically reviewed ventricular assist devices approved for pediatric use in terms of implant indication, main adverse effects, and outcomes. The main adverse effects associated with these devices have been noted to be thromboembolism, infection, bleeding, and hemolysis. However, utilizing left VAD early on, before end-organ dysfunction and deterioration of heart function, may give the patient enough time to recuperate before considering a more long-term solution for ventricular support.
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Greenberg JW, Kulshrestha K, Dani A, Winlaw DS, Lehenbauer DG, Chin C, Lorts A, Gist KM, Zafar F, Morales DLS. Not all durations of preheart transplant mechanical ventilation portend inferior post-transplant survival in children. Pediatr Transplant 2022; 27:e14433. [PMID: 36345131 DOI: 10.1111/petr.14433] [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: 09/06/2022] [Revised: 09/28/2022] [Accepted: 09/29/2022] [Indexed: 11/10/2022]
Abstract
BACKGROUND Mechanical ventilation prior to pediatric heart transplantation predicts inferior post-transplant survival, but the impact of ventilation duration on survival is unclear. METHODS Data from the United Network for Organ Sharing and Pediatric Health Information System were used to identify pediatric (<18 years) heart transplant recipients from 2003 to 2020. Patients ventilated pretransplant were first compared to no ventilation, then ventilation durations were compared across quartiles of ventilation (≤1 week, 8 days-5 weeks, >5 weeks). RESULTS At transplant, 11% (511/4506) of patients required ventilation. Ventilated patients were younger, had more congenital heart disease, more urgent listing-status, and greater rates of nephropathy, TPN-dependence, and inotrope and ECMO requirements (p < .001 for all). Post-transplant, previously ventilated patients experienced longer ventilation durations, ICU and hospital stays, and inferior survival (all p < .001). Hospital outcomes and survival worsened with longer pretransplant ventilation. One-year and overall survival were similar between the no-ventilation and ≤1 week groups (p = .703 & p = .433, respectively) but were significantly worse for ventilation durations >1 week (p < .001). On multivariable analysis, ventilation ≤1 week did not predict mortality (HR 0.98 [95% CI 0.85-1.43]), whereas ventilation >1 week did (HR: 1.18 [1.01-1.39]). CONCLUSIONS Longer pretransplant ventilation portends worse outcomes, although only ventilation >1 week predicts mortality. These findings can inform pretransplant prognostication.
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Affiliation(s)
- Jason W Greenberg
- The Heart Institute, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Kevin Kulshrestha
- The Heart Institute, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Alia Dani
- The Heart Institute, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - David S Winlaw
- The Heart Institute, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - David G Lehenbauer
- The Heart Institute, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Clifford Chin
- The Heart Institute, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Angela Lorts
- The Heart Institute, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Katja M Gist
- The Heart Institute, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Farhan Zafar
- The Heart Institute, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - David L S Morales
- The Heart Institute, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
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Abstract
Heart transplantation (HTx) has a storied past, with origins dating back to the early twentieth century and the first pediatric orthotopic heart transplant performed in 1967 on a neonate with Ebstein abnormality. Today, approximately 500 pediatric HTx are performed annually, with survival times now measured in decades rather than days or weeks. In large part, advances in immunosuppression, critical care, dedicated transplant teams and mechanical circulatory support have paved the way for improvements in waitlist mortality and post-transplant survival, with future directions including the development of intracorporeal ventricular assist devices (VADs) for small children, expanding/standardizing donor criteria, and xenotransplantation.
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Palazzolo T, Hirschhorn M, Garven E, Day S, Stevens RM, Rossano J, Tchantchaleishvili V, Throckmorton AL. Technology Landscape of Pediatric Mechanical Circulatory Support Devices- A Systematic Review 2010-2021. Artif Organs 2022; 46:1475-1490. [PMID: 35357020 PMCID: PMC9256769 DOI: 10.1111/aor.14242] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 02/17/2022] [Accepted: 03/15/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Mechanical circulatory support (MCS) devices, such as ventricular assist devices (VADs) and total artificial hearts (TAHs), have become a vital therapeutic option in the treatment of end-stage heart failure for adult patients. Such therapeutic options continue to be limited for pediatric patients. Clinicians initially adapted or scaled existing adult devices for pediatric patients; however, these adult devices are not designed to support the anatomical structure and varying flow capacities required for this population and are generally operated "off-design", which risks complications such as hemolysis and thrombosis. Devices designed specifically for the pediatric population that seek to address these shortcomings are now emerging and gaining FDA approval. METHODS To analyze the competitive landscape of pediatric MCS devices, we conducted a systematic literature review. Approximately 27 devices were studied in detail: 8 were established or previously approved designs, and 19 were under development (11 VADs, 5 Fontan assist devices, and 3 TAHs). RESULTS Despite significant progress, there is still no pediatric pump technology that satisfies the unique and distinct design constraints and requirements to support pediatric patients, including the wide range of patient sizes, increased cardiovascular demand with growth, and anatomic and physiologic heterogeneity of congenital heart disease. CONCLUSIONS Forward-thinking design solutions are required to overcome these challenges and to ensure the translation of new therapeutic MCS devices for pediatric patients.
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Affiliation(s)
- Thomas Palazzolo
- BioCirc Research Laboratory, School of Biomedical Engineering, Science, and Health Systems, Drexel University, Philadelphia, PA, USA
| | - Matthew Hirschhorn
- BioCirc Research Laboratory, School of Biomedical Engineering, Science, and Health Systems, Drexel University, Philadelphia, PA, USA
| | - Ellen Garven
- BioCirc Research Laboratory, School of Biomedical Engineering, Science, and Health Systems, Drexel University, Philadelphia, PA, USA
| | - Steven Day
- Department of Biomedical Engineering, Kate Gleason College of Engineering, Rochester Institute of Technology, Rochester, NY, USA
| | - Randy M Stevens
- College of Medicine, St. Christopher's Hospital for Children, Drexel University, Philadelphia, PA, USA
| | - Joseph Rossano
- Division of Pediatric Cardiology, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Vakhtang Tchantchaleishvili
- Division of Cardiac Surgery, Department of Surgery, Thomas Jefferson University Hospital, Philadelphia, PA, USA
| | - Amy L Throckmorton
- BioCirc Research Laboratory, School of Biomedical Engineering, Science, and Health Systems, Drexel University, Philadelphia, PA, USA
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11
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Hickner B, Anand A, Godfrey EL, Dunson J, Reul RM, Cotton R, Galvan NTN, O'Mahony C, Goss JA, Rana A. Trends in Survival for Pediatric Transplantation. Pediatrics 2022; 149:184553. [PMID: 35079811 DOI: 10.1542/peds.2020-049632] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/01/2021] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVES Progress in pediatric transplantation measured in the context of waitlist and posttransplant survival is well documented but falls short of providing a complete perspective for children and their families. An intent-to-treat analysis, in which we measure survival from listing to death regardless of whether a transplant is received, provides a more comprehensive perspective through which progress can be examined. METHODS Univariable and multivariable Cox regression was used to analyze factors impacting intent-to-treat survival in 12 984 children listed for heart transplant, 17 519 children listed for liver transplant, and 16 699 children listed for kidney transplant. The Kaplan-Meier method and log-rank test were used to assess change in waitlist, posttransplant, and intent-to-treat survival. Wait times and transplant rates were compared by using χ2 tests. RESULTS Intent-to-treat survival steadily improved from 1987 to 2017 in children listed for heart (hazard ratio [HR] 0.96, 95% confidence interval [CI] 0.96-0.97), liver (HR 0.95, 95% CI 0.94-0.97), and kidney (HR 0.97, 95% CI 0.95-0.99) transplant. Waitlist and posttransplant survival also improved steadily for all 3 organs. For heart transplant, the percentage of patients transplanted within 1 year significantly increased from 1987 to 2017 (60.8% vs 68.7%); however, no significant increase was observed in liver (68.9% vs 72.5%) or kidney (59.2% vs 62.7%) transplant. CONCLUSIONS Intent-to-treat survival, which is more representative of the patient perspective than individual metrics alone, steadily improved for heart, liver, and kidney transplant over the study period. Further efforts to maximize the donor pool, improve posttransplant outcomes, and optimize patient care while on the waitlist may contribute to future progress.
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Affiliation(s)
| | | | - Elizabeth L Godfrey
- Department of Surgery, School of Medicine, Yale University, New Haven, Connecticut
| | | | | | - Ronald Cotton
- Division of Abdominal Transplantation, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - Nhu Thao Nguyen Galvan
- Division of Abdominal Transplantation, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - Christine O'Mahony
- Division of Abdominal Transplantation, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - John A Goss
- Division of Abdominal Transplantation, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - Abbas Rana
- Division of Abdominal Transplantation, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas
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12
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Sebastian R, Ullah S, Motta P, Das B, Zabala L. Anesthetic Considerations in Pediatric Patients With Acute Decompensated Heart Failure. Semin Cardiothorac Vasc Anesth 2021; 26:41-53. [PMID: 34730043 DOI: 10.1177/10892532211044977] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Acute decompensated heart failure (ADHF) in pediatrics is a significant cause for morbidity and mortality in children. Congenital heart disease and cardiomyopathy are the leading etiologies of ADHF. It is common for these children to undergo diagnostic, therapeutic, or surgical procedure under anesthesia, which may be associated with significant morbidity and mortality. The importance of preanesthetic multidisciplinary planning with all involved teams, including anesthesia, cardiology, intensive care, perfusion, and cardiac surgery, cannot be emphasized enough. In order to safely manage these patients, it is imperative for the anesthesiologist to understand the complex pathophysiological interactions between cardiopulmonary systems and anesthesia during these procedures. This review discusses the etiology, pathophysiology, clinical manifestations, and perioperative management of these patients.
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Affiliation(s)
- Roby Sebastian
- Department of Anesthesiology and Pain Management, 248024University of Texas Southwestern, Dallas, TX, USA.,Children's Medical Center of Dallas, Anesthesiology and Pain Management, Dallas, TX, USA
| | - Sana Ullah
- Department of Anesthesiology and Pain Management, 248024University of Texas Southwestern, Dallas, TX, USA.,Children's Medical Center of Dallas, Anesthesiology and Pain Management, Dallas, TX, USA
| | - Pablo Motta
- Perioperative and Pain Medicine, 3989Baylor College of Medicine Houston, TX, USA.,Texas Children's Hospital, Arthur S. Keats Division of Pediatric Cardiovascular Anesthesiology, Houston, TX, USA
| | - Bibhuti Das
- Department of Pediatrics, Department of Pediatric Cardiology, 3989Baylor College of Medicine, Austin, TX, USA.,Texas Children's Hospital Austin Specialty Center, Austin, TX, USA
| | - Luis Zabala
- Department of Anesthesiology and Pain Management, 248024University of Texas Southwestern, Dallas, TX, USA.,Children's Medical Center of Dallas, Anesthesiology and Pain Management, Dallas, TX, USA
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Marey GM, Said SM, Ameduri R, Steiner ME, Bowler M, Loomis A, Jang S, Griselli M. Berlin Excor Cannulation of Left Atrial Appendage in Left Ventricular Restrictive Physiology: A Novel Bailout Strategy. ASAIO J 2021; 67:e157-e159. [PMID: 33369930 PMCID: PMC8404960 DOI: 10.1097/mat.0000000000001330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Ventricular assist device (VAD) management continues to be a challenge in the presence of restrictive physiology. Left atrial (LA) decompression is not satisfactory even with good function and position of the left ventricular cannula. We describe an alternate approach with LA cannulation via the left atrial appendage (LAA) as a rescue strategy in a patient who had restrictive physiology, in our case was secondary to viral myocarditis acute systolic heart failure with subsequent insidious diffuse endomyocardial fibrosis and superimposed massive calcification, causing inadequate emptying of the left ventricle despite optimal VAD apical cannula position.
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Affiliation(s)
| | - Sameh M. Said
- From the Divisions of Pediatric Cardiovascular Surgery
| | | | - Marie E. Steiner
- Pediatric Critical Care, Masonic Children’s Hospital, University of Minnesota, Minneapolis, Minnesota
| | - Michael Bowler
- Pediatric Critical Care, Masonic Children’s Hospital, University of Minnesota, Minneapolis, Minnesota
| | - Ashley Loomis
- Pediatric Critical Care, Masonic Children’s Hospital, University of Minnesota, Minneapolis, Minnesota
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15
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Gorbea M. A Review of Physiologic Considerations and Challenges in Pediatric Patients With Failing Single- Ventricle Physiology Undergoing Ventricular Assist Device Placement. J Cardiothorac Vasc Anesth 2021; 36:1756-1770. [PMID: 34229925 DOI: 10.1053/j.jvca.2021.05.045] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 05/16/2021] [Accepted: 05/21/2021] [Indexed: 11/11/2022]
Abstract
Advances in surgical techniques and outpatient cardiac care have led to a growing population of pediatric patients surviving well into adulthood with previous single-ventricle palliation. Continued improvement in survival has resulted in subsequent increases in the number of patients with single-ventricle physiology listed for heart transplantations. Some of these patients require mechanical circulatory support as a bridge to transplantation, although establishing successful mechanical circulatory support in these complex patients remains challenging. Only limited published data exist describing the perioperative anesthetic management and key considerations dedicated to patients with failing single-ventricle physiology presenting for ventricular assist devices. This clinical review aims to provide a focused evaluation of the vital perioperative considerations encountered in this novel population.
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Affiliation(s)
- Mikel Gorbea
- Department of Anesthesiology and Pain Management, University of Texas Southwestern Medical Center, Children's Medical Center, Dallas, TX.
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16
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Bryant R, Wisotzkey B, Velez DA. The use of mechanical assist devices in the pediatric population. Semin Pediatr Surg 2021; 30:151041. [PMID: 33992308 DOI: 10.1016/j.sempedsurg.2021.151041] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The last two decades have witnessed an expansion in the devices, support strategies, and outcomes for pediatric patients who require mechanical circulatory support. The use of large registries that house data on these devices and the development of shared learning networks have provided clinicians with the ability to critically assess outcomes for emerging and existing technology. The purpose of this review is to provide the reader with perspective on the most contemporary devices utilized for pediatric mechanical circulatory support. It will examine existing support strategies and the most contemporary outcomes regarding these devices including those in high risk patients.
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Affiliation(s)
- Roosevelt Bryant
- Division of Cardiovascular Surgery, The Heart Center, Phoenix Children's Hospital, Phoenix, AZ 85016
| | - Bethany Wisotzkey
- Division of Pediatric Cardiology, The Heart Center, Phoenix Children's Hospital, Phoenix, AZ 85016
| | - Daniel A Velez
- Division of Cardiovascular Surgery, The Heart Center, Phoenix Children's Hospital, Phoenix, AZ 85016
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17
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Complications in children with ventricular assist devices: systematic review and meta-analyses. Heart Fail Rev 2021; 27:903-913. [PMID: 33661404 DOI: 10.1007/s10741-021-10093-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/23/2021] [Indexed: 10/22/2022]
Abstract
Heart failure is a significant cause of mortality in children with cardiovascular diseases. Treatment of heart failure depends on patients' symptoms, age, and severity of their condition, with heart transplantation required when other treatments are unsuccessful. However, due to lack of fitting donor organs, many patients are left untreated, or their transplant is delayed. In these patients, ventricular assist devices (VADs) are used to bridge to heart transplant. However, VAD support presents various complications in patients. The aim of this study was to compile, review, and analyse the studies reporting risk factors and aetiologies of complications of VAD support in children. Random effect risk ratios (RR) with 95% confidence intervals were calculated to analyse relative risk of thrombosis (RR = 3.53 [1.04, 12.06] I2 = 0% P = 0.04), neurological problems (RR = 0.95 [0.29, 3.15] I2 = 53% P = 0.93), infection (RR = 0.31 [0.05, 2.03] I2 = 86% P = 0.22), bleeding (RR = 2.57 [0.76, 8.66] I2 = 0% P = 0.13), and mortality (RR = 2.20 [1.36, 3.55] I2 = 0% P = 0.001) under pulsatile-flow and continuous-flow VAD support, relative risk of mortality (RR = 0.45 [0.15, 1.37] I2 = 36% P = 0.16) under left VAD and biVAD support, relative risk of thrombosis (RR = 1.72 [0.46, 6.44] I2 = 0% P = 0.42), infection (RR = 1.77 [0.10, 32.24] I2 = 46% P = 0.70) and mortality (RR = 0.92 [0.14, 6.28] I2 = 45% P = 0.93) in children with body surface area < 1.2 m2 and > 1.2 m2 under VAD support, relative risk of mortality in children supported with VAD and diagnosed with cardiomyopathy and congenital heart diseases (RR = 1.31 [0.10, 16.61] I2 = 73% P = 0.84), and cardiomyopathy and myocarditis (RR = 0.91 [0.13, 6.24] I2 = 58% P = 0.92). Meta-analyses results show that further research is necessary to reduce complications under VAD support.
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18
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Joong A, Gossett JG, Blume ED, Thrush P, Pahl E, Mongé MC, Backer CL, Patel A. Variability in clinical decision-making for ventricular assist device implantation in pediatrics. Pediatr Transplant 2020; 24:e13840. [PMID: 33070459 DOI: 10.1111/petr.13840] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 08/03/2020] [Accepted: 08/12/2020] [Indexed: 12/23/2022]
Abstract
BACKGROUND Minimal data exist on clinical decision-making in VAD implantation in pediatrics. This study aims to identify areas of consensus/variability among pediatric VAD physicians in determining eligibility and factors that guide decision-making. METHODS An 88-item survey with clinical vignettes was sent to 132 pediatric HT cardiologists and surgeons at 37 centers. Summary statistics are presented for the variables assessed. RESULTS Total respondents were 65 (72% cardiologists, 28% surgeons) whose centers implanted 1-5 (34%), 6-10 (40%), or >10 (26%) VADs in the past year. Consensus varied by patients' age, diagnosis, and Pedimacs profile. Highest agreement to offer VAD (97%) was a mechanically ventilated teenager with dilated cardiomyopathy. Patients stable on inotropes were less likely offered VAD (11%-25%). SV infant with Pedimacs profile 2 had the most varied responses: 37% offered VAD; estimated survival ranged from 15% to 90%. Variables considered for VAD eligibility included mild developmental delays (100% offered VAD), moderate-severe behavioral concerns (46%), cancer in remission >2 years (100%), active malignancy with good prognosis (68%) or uncertain prognosis (36%), and BMI >35 (74%) or <15 (69%). Most respondents (91%) would consider destination therapy VADs in pediatrics, though not currently feasible at 1/3 of centers. Factors with greatest influence on decision-making included HT candidacy, families' goals of care, and risks of complications. CONCLUSIONS Significant variation exists among pediatric VAD physicians when determining VAD eligibility and estimating survival, which can lead to differences in access to emerging technologies across institutions. Further work is needed to understand and mitigate these differences.
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Affiliation(s)
- Anna Joong
- Division of Pediatric Cardiology, Northwestern Feinberg School of Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
| | - Jeffrey G Gossett
- Division of Pediatric Cardiology, Benioff Children's Hospital, University of San Francisco California, San Francisco, CA, USA
| | - Elizabeth D Blume
- Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Philip Thrush
- Division of Pediatric Cardiology, Northwestern Feinberg School of Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
| | - Elfriede Pahl
- Division of Pediatric Cardiology, Northwestern Feinberg School of Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
| | - Michael C Mongé
- Division of Pediatric Cardiovascular Surgery, Northwestern Feinberg School of Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
| | - Carl L Backer
- Section of Pediatric Cardiothoracic Surgery, UK Healthcare Kentucky Children's Hospital, Lexington, KY, USA
| | - Angira Patel
- Division of Pediatric Cardiology, Northwestern Feinberg School of Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
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19
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Sivathasan C. Chugging to silent machines: development of mechanical cardiac support. Indian J Thorac Cardiovasc Surg 2020; 36:234-246. [DOI: 10.1007/s12055-020-01010-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 07/01/2020] [Accepted: 07/02/2020] [Indexed: 11/28/2022] Open
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21
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Thangappan K, Ashfaq A, Villa C, Morales DLS. The total artificial heart in patients with congenital heart disease. Ann Cardiothorac Surg 2020; 9:89-97. [PMID: 32309156 DOI: 10.21037/acs.2020.02.08] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Background While ventricular assist devices (VADs) remain the cornerstone of mechanical circulatory support (MCS), the total artificial heart (TAH-t) has gained popularity for certain patients in whom VAD support is not ideal. Congenital heart disease (CHD) patients often have barriers to VAD placement due to anatomic and physiological variation and thus can benefit from the TAH-t. The purpose of this study is to analyze the differences in TAH application and outcomes in patients with and without CHD. Methods The SynCardia Department of Clinical Research provided data upon request for all TAH-t implantations worldwide from December 1985 to October 2019. These patients were divided into two groups by pre-implantation diagnosis of CHD and non-CHD. Results A total of 1,876 patients were identified. Eighty (4%) of these patients also carried a diagnosis of CHD. There was a higher proportion of children in the CHD cohort (16.3% vs. 2.1%, P<0.001) and this translated into a lower average age amongst the two groups (34±13 vs. 49±13 years, P<0.001). There were also significantly more females in the CHD group (22.8% vs. 12.8%, P=0.010). CHD patients were more likely to be supported with a 50 cc TAH-t (11.3% vs. 4.5%, P=0.005) while all other support characteristics, including duration of support, were similar between the groups. All measured outcomes were similar between CHD and non-CHD patients including positive outcome (alive on device or transplanted), 1-month conditional survival, and rate of Freedom Driver use. Conclusions TAH-t is an effective means to support patients with CHD. Patients with CHD had similar survival, support characteristics, and frequency of discharge compared to patients without CHD. As MCS continues to grow, its indications broadened, and its contraindications narrowed, more patient populations will see the benefit of the TAH's continuously developing technology.
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Affiliation(s)
- Karthik Thangappan
- Department of Cardiothoracic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Awais Ashfaq
- Department of Cardiothoracic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Chet Villa
- Department of Cardiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - David L S Morales
- Department of Cardiothoracic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
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