1
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See Hoe LE, Li Bassi G, Wildi K, Passmore MR, Bouquet M, Sato K, Heinsar S, Ainola C, Bartnikowski N, Wilson ES, Hyslop K, Skeggs K, Obonyo NG, Shuker T, Bradbury L, Palmieri C, Engkilde-Pedersen S, McDonald C, Colombo SM, Wells MA, Reid JD, O'Neill H, Livingstone S, Abbate G, Haymet A, Jung JS, Sato N, James L, He T, White N, Redd MA, Millar JE, Malfertheiner MV, Molenaar P, Platts D, Chan J, Suen JY, McGiffin DC, Fraser JF. Donor heart ischemic time can be extended beyond 9 hours using hypothermic machine perfusion in sheep. J Heart Lung Transplant 2023; 42:1015-1029. [PMID: 37031869 DOI: 10.1016/j.healun.2023.03.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 03/24/2023] [Accepted: 03/30/2023] [Indexed: 04/11/2023] Open
Abstract
BACKGROUND The global shortage of donor hearts available for transplantation is a major problem for the treatment of end-stage heart failure. The ischemic time for donor hearts using traditional preservation by standard static cold storage (SCS) is limited to approximately 4 hours, beyond which the risk for primary graft dysfunction (PGD) significantly increases. Hypothermic machine perfusion (HMP) of donor hearts has been proposed to safely extend ischemic time without increasing the risk of PGD. METHODS Using our sheep model of 24 hours brain death (BD) followed by orthotopic heart transplantation (HTx), we examined post-transplant outcomes in recipients following donor heart preservation by HMP for 8 hours, compared to donor heart preservation for 2 hours by either SCS or HMP. RESULTS Following HTx, all HMP recipients (both 2 hours and 8 hours groups) survived to the end of the study (6 hours after transplantation and successful weaning from cardiopulmonary bypass), required less vasoactive support for hemodynamic stability, and exhibited superior metabolic, fluid status and inflammatory profiles compared to SCS recipients. Contractile function and cardiac damage (troponin I release and histological assessment) was comparable between groups. CONCLUSIONS Overall, compared to current clinical SCS, recipient outcomes following transplantation are not adversely impacted by extending HMP to 8 hours. These results have important implications for clinical transplantation where longer ischemic times may be required (e.g., complex surgical cases, transport across long distances). Additionally, HMP may allow safe preservation of "marginal" donor hearts that are more susceptible to myocardial injury and facilitate increased utilization of these hearts for transplantation.
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Affiliation(s)
- Louise E See Hoe
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia; School of Pharmacy and Medical Sciences, Griffith University, Southport, Queensland, Australia.
| | - Gianluigi Li Bassi
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia; Uniting Care Hospitals, Intensive Care Units St Andrew's War Memorial Hospital and The Wesley Hospital, Brisbane, Queensland, Australia; Wesley Medical Research, Brisbane, Queensland, Australia; Queensland University of Technology, Brisbane, Queensland, Australia
| | - Karin Wildi
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia; Cardiovascular Research Institute Basel, Basel, Switzerland
| | - Margaret R Passmore
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Mahe Bouquet
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Kei Sato
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Silver Heinsar
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia; Department of Intensive Care, North Estonia Medical Centre, Tallinn, Estonia
| | - Carmen Ainola
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Nicole Bartnikowski
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia; School of Mechanical, Medical and Process Engineering, Faculty of Engineering, Queensland University of Technology, Queensland, Australia
| | - Emily S Wilson
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Kieran Hyslop
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Kris Skeggs
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - Nchafatso G Obonyo
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia; Wellcome Trust Centre for Global Health Research, Imperial College London, London, United Kingdom; Initiative to Develop African Research Leaders (IDeAL), Kilifi, Kenya
| | - Tristan Shuker
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia; School of Biomedical Sciences, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Lucy Bradbury
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; School of Biomedical Sciences, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Chiara Palmieri
- School of Veterinary Science, Faculty of Science, University of Queensland, Gatton, Queensland, Australia
| | | | - Charles McDonald
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Department of Anesthesia and Perfusion, The Prince Charles Hospital, Queensland, Australia
| | - Sebastiano M Colombo
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia; Department of Anesthesia, Critical Care and Emergency, Fondazione IRCCS Ca' Granda - Ospedale Maggiore Policlinico, Milan, Italy
| | - Matthew A Wells
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; School of Pharmacy and Medical Sciences, Griffith University, Southport, Queensland, Australia
| | - Janice D Reid
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia; School of Biomedical Sciences, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Hollier O'Neill
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia; School of Biomedical Sciences, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Samantha Livingstone
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Gabriella Abbate
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Andrew Haymet
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Jae-Seung Jung
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia; Department of Thoracic and Cardiovascular Surgery, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Noriko Sato
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Lynnette James
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - Ting He
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - Nicole White
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; School of Public Health and Social Work, Faculty of Health, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Meredith A Redd
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Institute for Molecular Bioscience, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Jonathan E Millar
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia; Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Maximillian V Malfertheiner
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia; Department of Internal Medicine II, Cardiology and Pneumology, University Medical Center Regensburg, Regensburg, Germany
| | - Peter Molenaar
- Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia; School of Biomedical Sciences, Faculty of Health, Queensland University of Technology, Brisbane, Queensland, Australia
| | - David Platts
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Jonathan Chan
- School of Medicine, Griffith University, Southport, Queensland, Australia
| | - Jacky Y Suen
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - David C McGiffin
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia; Cardiothoracic Surgery and Transplantation, The Alfred Hospital, Melbourne, Victoria, Australia; Monash University, Melbourne, Victoria, Australia
| | - John F Fraser
- Critical Care Research Group, The Prince Charles Hospital, Brisbane, Queensland, Australia; Prince Charles Hospital Northside Clinical Unit, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
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Appadurai V, Chamberlain R, Edwards NFA, Mulligan A, Platts D, Hamilton-Craig C, Chan J, Scalia GM. The long term prognostic value of peak left atrial strain in cardiac transplant patients. Eur Heart J Cardiovasc Imaging 2022. [DOI: 10.1093/ehjci/jeab289.319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Left atrial (LA) dysfunction is associated with poorer outcomes in many disease processes. Left atrial strain (LAS) is a novel two-dimensional (2D) quantitative analysis of LA function. Cardiac transplantation directly involves the LA during implantation of the donor heart. Traditional echocardiographic indices after transplantation have demonstrated value in correlating with acute cellular rejection (ACR), morbidity and mortality over short- and long-term follow-up. The prognostic value of LA strain has not been previously investigated in this cohort.
Purpose
We hypothesized that incrementally impaired LA strain in post cardiac transplant patients with varying degrees of ACR may be prognostic of poorer outcomes on long term follow-up.
Methods
87 Heart transplant patients, assessed between 2009 and 2015, underwent transthoracic echocardiography and endomyocardial biopsy. 2D strain analysis on the LV and LA were performed along with traditional echocardiographic parameters. Patients were grouped according to peak LAS (PALS) tertiles and rejection burden history was assessed and grouped according to ACR burden at a median of 12 (±5.4) months post transplantation. The primary endpoint was all-cause mortality at follow-up.
Results
12 patients met the primary endpoint over a median follow-up of 66 ± 51 months. The mean LA PALS was significantly different across the tertiles (lowest tertile 12.29 ± 2.5% vs middle tertile 17.89 ± 1.1% vs highest tertile 24.54 ± 4.2%; p <0.0001). LA strain dispersion was also significantly different between the tertiles (61.03 ± 25.8ms vs 41.8 ± 15.8ms vs 44.8 ± 18.8ms; p <0.001). All other clinical and echocardiographic parameters were non-significant between the tertiles however, there was a trend towards a lower PALS in the higher rejection burden group. Kaplan Meier curves demonstrated that survival over follow-up was significantly worse in the lower tertile LA PALS group compared to the highest tertiles LA PALS group (Log-rank test = p < 0.0001). The lowest LA PALS tertile had a significantly higher risk of reaching the primary endpoint compared with patients in the highest LA PALS tertile (hazard ratio [HR] 9.802; 95% CI 1.832-52.45; p <0.008). Higher LA PALS and LV GLS (LA PALS HR 0.610 95% CI 0.401-0.926; p 0.02; LV GLS HR 0.638 95% CI 0.418-0.972; p 0.037) were significantly associated with a reduction in reaching the primary endpoint in a multi-variate regression model including clinically relevant traditional and strain-based echocardiographic parameters.
Conclusions
Lower LA PALS is significantly associated with poorer long-term outcomes in cardiac transplant patients with ACR. Non-invasive LA PALS may be a useful predictor of long-term outcome in patients post cardiac transplantation. Abstract Figure. Survival curves for LA PALS tertiles
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Affiliation(s)
- V Appadurai
- The Prince Charles Hospital, Brisbane, Australia
| | | | - NFA Edwards
- The Prince Charles Hospital, Brisbane, Australia
| | - A Mulligan
- The Prince Charles Hospital, Brisbane, Australia
| | - D Platts
- The Prince Charles Hospital, Brisbane, Australia
| | | | - J Chan
- The Prince Charles Hospital, Brisbane, Australia
| | - GM Scalia
- The Prince Charles Hospital, Brisbane, Australia
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Hoe LS, Wildi K, Skeggs K, Bouquet M, Sato K, Jung J, Ainola C, Hyslop K, Heinsar S, Abbate G, Colombo S, Passmore M, Wood E, Wells M, Bartnikowski N, O'Neill H, Reid J, Shuker T, Haymet A, Livingstone S, Sato N, Obonyo N, James L, He T, McDonald C, Mullins D, Engkilde-Pedersen S, Diab S, Millar J, Malfertheiner M, Marshall L, Nair L, Rozencwajg S, Wang X, Shek Y, Platts D, Chan J, Boon C, Black D, Helms L, Bradbury L, Haqqani H, Molenaar P, Bassi GL, Suen J, McGiffin D, Fraser J. Donor Heart Preservation by Hypothermic Ex Vivo Perfusion - Improved Recipient Survival and Successful Prolongation of Ischemic Time. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.1864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Bayat MK, Chan W, Javorsky G, Platts D, Dashwood A, Wong Y, Mulligan A, Tesar P, Prahbu A, Thomson B, Lavana J, McKenzie S. Acute Compartment Syndrome Following Heart Transplant. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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5
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Khorramshahi Bayat M, McKenzie S, Javorsky G, Wong Y, Platts D, Dashwood A, Lavana J, Thomson B, Chan W. Genetic Testing Could Assist in the Clinical Management in Patients Supported on Ventricular Assist Devices With Recovered Myocardial Function. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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6
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Goldschmidt M, Mazimba S, Grayburn P, Hage A, Kourkoveli P, Cowger J, Simmons L, Moe G, Mishkin J, Platts D, Gordon R, Ajello S, Marcoff L, Toma M. Six-month and One-year Outcomes for Repair in Patients with Functional Mitral Regurgitation from the CLASP Study. J Card Fail 2020. [DOI: 10.1016/j.cardfail.2020.09.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Challa A, Latona J, Fraser J, Spanevello M, Scalia G, Burstow D, Platts D. Mitral valve bio-prosthesis and annuloplasty thrombosis during extracorporeal membrane oxygenation: case series. Eur Heart J Case Rep 2020; 4:1-6. [PMID: 32617486 PMCID: PMC7319831 DOI: 10.1093/ehjcr/ytaa085] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Revised: 08/29/2019] [Accepted: 03/23/2020] [Indexed: 11/14/2022]
Abstract
Background Veno-arterial extracorporeal membrane oxygenation (VA-ECMO) is a well-recognized form of haemodynamic support for patients with refractory cardiogenic shock, who are unable to be weaned off cardiopulmonary bypass. Thrombosis or bleeding from cannula sites or surgical wounds are the leading cause of morbidity and mortality in these patients, and presents a delicate balance of anticoagulation during management of patients undergoing circulatory support. Case summary In this case series, we discuss three cases of patients undergoing mitral valve replacements or repair with thrombosis of their new bio-prosthesis in the immediate post-operative setting. All three patients were supported with VA-ECMO post-operatively, and thrombosis occurred despite anticoagulation. Discussion During extracorporeal membrane oxygenation, the reduced flow throughout the heart increases the risk of intra-cardiac thrombosis. This is of particular importance in the context of mitral valve replacements and repairs, where the bio-prosthesis is an additional risk factor for thrombosis. Our cases demonstrate the morbidity and mortality of such complications, with the likely aetiology being low transvalvular flow in a newly inserted valve combined with the pro-thrombotic state created by the VA-ECMO circuit.
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Affiliation(s)
- Abhinay Challa
- Department of Cardiology, The Prince Charles Hospital, Chermside, 4032 Brisbane, Australia.,Bond University, Robina, 4226 Gold Coast, Australia
| | - Jilani Latona
- Department of Cardiology, The Prince Charles Hospital, Chermside, 4032 Brisbane, Australia
| | - John Fraser
- University of Queensland, St Lucia, 4072 Brisbane, Australia.,Critical Care Research Group, The Prince Charles Hospital, Chermside, 4032 Brisbane, Australia
| | - Michelle Spanevello
- University of Queensland, St Lucia, 4072 Brisbane, Australia.,Department of Haematology, Cancer Care Services, Royal Brisbane and Women's Hospital, Herston, 4029 Brisbane, Australia
| | - Gregory Scalia
- Department of Cardiology, The Prince Charles Hospital, Chermside, 4032 Brisbane, Australia.,University of Queensland, St Lucia, 4072 Brisbane, Australia
| | - Darryl Burstow
- Department of Cardiology, The Prince Charles Hospital, Chermside, 4032 Brisbane, Australia.,University of Queensland, St Lucia, 4072 Brisbane, Australia
| | - David Platts
- Department of Cardiology, The Prince Charles Hospital, Chermside, 4032 Brisbane, Australia.,University of Queensland, St Lucia, 4072 Brisbane, Australia.,Critical Care Research Group, The Prince Charles Hospital, Chermside, 4032 Brisbane, Australia
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Antony J, Wee Y, Lau K, Platts D, Scalia G, Habibian M. 327 Echocardiographic Assessment and Supplementary Contrast Enhanced Images of a Left Ventricular Mass. Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.09.334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Rausch K, Lau K, Ulett K, Chan W, Javorsky G, Wong YW, Thompson B, Pauli J, McKenzie S, Horvath R, Platts D. Orthotopic cardiac transplantation for Chagas cardiomyopathy in Australia. Intern Med J 2019; 49:1194-1195. [PMID: 31507051 DOI: 10.1111/imj.14421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 12/19/2018] [Accepted: 01/07/2019] [Indexed: 11/27/2022]
Affiliation(s)
- Karen Rausch
- Department of Cardiology, The Prince Charles Hospital, Brisbane, Queensland, Australia.,University of Queensland, School of Medicine, Brisbane, Queensland, Australia
| | - Katherine Lau
- Department of Cardiology, The Prince Charles Hospital, Brisbane, Queensland, Australia.,University of Queensland, School of Medicine, Brisbane, Queensland, Australia
| | - Kimberly Ulett
- Pathology Queensland, Queensland Health, Brisbane, Queensland, Australia
| | - Wandy Chan
- Department of Cardiology, The Prince Charles Hospital, Brisbane, Queensland, Australia.,University of Queensland, School of Medicine, Brisbane, Queensland, Australia
| | - George Javorsky
- Department of Cardiology, The Prince Charles Hospital, Brisbane, Queensland, Australia.,University of Queensland, School of Medicine, Brisbane, Queensland, Australia
| | - Yee W Wong
- Department of Cardiology, The Prince Charles Hospital, Brisbane, Queensland, Australia.,University of Queensland, School of Medicine, Brisbane, Queensland, Australia
| | - Bruce Thompson
- Department of Cardiothoracic Surgery, The Prince Charles Hospital, Brisbane, Queensland, Australia
| | - John Pauli
- Department of Infectious Diseases, The Prince Charles Hospital, Brisbane, Queensland, Australia
| | - Scott McKenzie
- Department of Cardiology, The Prince Charles Hospital, Brisbane, Queensland, Australia.,University of Queensland, School of Medicine, Brisbane, Queensland, Australia
| | - Robert Horvath
- Department of Infectious Diseases, The Prince Charles Hospital, Brisbane, Queensland, Australia
| | - David Platts
- Department of Cardiology, The Prince Charles Hospital, Brisbane, Queensland, Australia.,University of Queensland, School of Medicine, Brisbane, Queensland, Australia
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Platts D, Morgan S. Comment on "Web-Based Tools and Mobile Applications to Mitigate Burnout, Depression, and Suicidality Among Healthcare Students and Professionals: a Systematic Review". Acad Psychiatry 2018; 42:422-423. [PMID: 29546680 DOI: 10.1007/s40596-018-0906-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 03/04/2018] [Indexed: 06/08/2023]
Affiliation(s)
- David Platts
- Warwick Medical School, Coventry, Warwickshire, UK.
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Harper W, Platts D. Medical student perspectives of early general practice placements. Education for Primary Care 2018. [DOI: 10.1080/14739879.2018.1444423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Kyranis SJ, Latona J, Platts D, Kelly N, Savage M, Brown M, Hamilton-Craig C, Scalia GM, Burstow D. Improving the echocardiographic assessment of pulmonary pressure using the tricuspid regurgitant signal-The “chin” vs the “beard”. Echocardiography 2018; 35:1085-1096. [DOI: 10.1111/echo.13893] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Affiliation(s)
- Stephen J. Kyranis
- Department of Echocardiography; The Prince Charles Hospital; Brisbane QLD Australia
- School of Medicine; University of Queensland; Brisbane QLD Australia
| | - Jilani Latona
- Department of Echocardiography; The Prince Charles Hospital; Brisbane QLD Australia
- School of Medicine; University of Queensland; Brisbane QLD Australia
| | - David Platts
- Department of Echocardiography; The Prince Charles Hospital; Brisbane QLD Australia
- School of Medicine; University of Queensland; Brisbane QLD Australia
- Queensland Advanced Heart Failure and Cardiac Transplant Unit; The Prince Charles Hospital; Heart and Lung Institute; Brisbane QLD Australia
| | - Natalie Kelly
- Department of Echocardiography; The Prince Charles Hospital; Brisbane QLD Australia
- School of Medicine; University of Queensland; Brisbane QLD Australia
| | - Michael Savage
- Department of Echocardiography; The Prince Charles Hospital; Brisbane QLD Australia
- School of Medicine; University of Queensland; Brisbane QLD Australia
| | - Martin Brown
- School of Medicine; University of Queensland; Brisbane QLD Australia
- Queensland Advanced Heart Failure and Cardiac Transplant Unit; The Prince Charles Hospital; Heart and Lung Institute; Brisbane QLD Australia
| | - Christian Hamilton-Craig
- Department of Echocardiography; The Prince Charles Hospital; Brisbane QLD Australia
- School of Medicine; University of Queensland; Brisbane QLD Australia
- Centre for Advanced Imaging; University of Queensland; Brisbane QLD Australia
- University of Washington; Seattle WA USA
| | - Gregory M. Scalia
- Department of Echocardiography; The Prince Charles Hospital; Brisbane QLD Australia
- School of Medicine; University of Queensland; Brisbane QLD Australia
| | - Darryl Burstow
- Department of Echocardiography; The Prince Charles Hospital; Brisbane QLD Australia
- School of Medicine; University of Queensland; Brisbane QLD Australia
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Platts D, Burrows M. Medical student evaluation of measuring engagement in clinical learning. Education for Primary Care 2018; 29:122. [DOI: 10.1080/14739879.2018.1431808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Lin A, Koitka K, Lau K, Scarlia G, Burstow D, Prabhu A, Thomson B, Tesar P, Bancroft J, Platts D. Longitudinal Evaluation of Inflow Cannula Orientation Following Ventricular-Assist Device Implantation Using Transoesophageal Echocardiography. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Rajapakse S, Lau K, Habibian M, Koitka K, Lin A, Burstow D, Hamilton-Craig C, Scalia G, Platts D. Which Factors May Predict Use of Ultrasound Contrast Agents During Transthoracic Echocardiography? Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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See Hoe L, Obonyo N, Byrne L, Shiino K, Diab S, Dunster K, Passmore M, Boon C, Engkilde-Pedersen S, Esguerra A, Fauzi M, Pretti Pimenta L, Simonova G, Van Haren F, Shekar K, Anstey C, Tung J, Cullen L, Platts D, Chan J, Maitland K, Fraser J. Fluid Resuscitation with 0.9% Saline Impairs Myocardial Contractility in an Ovine Model of Endotoxaemic Shock. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Antony J, Godbolt D, Burstow D, Fetherston E, Wijesekera V, Williams L, Garg R, Cherian R, Kannan R, Platts D. Papillary Fibroelastoma of Mitral Valve Chordae. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Dashwood A, Laher S, Menon N, Thomson B, Prabhu A, Tesar P, Ziegenfuss M, Smith I, Javorsky G, Platts D, McKenzie S, Chan W, Bancroft J, Maddicks-Law J, Wong Y. Validation of EUROMACS-RHF (European Registry for Patients with Mechanical Circulatory Support Right-Sided Heart Failure) Score in Predicting Early Right Heart Failure Following Left Ventricular Assist Device Insertion in an Australian Single-Centre Cohort. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Benjamin A, Lau K, Habibian M, Scalia G, Burstow D, Thomson B, Prabhu A, Tesar P, Bancroft J, Fraser J, Platts D. Assessment of Left Ventricular Apical Morphology Using Contrast-Enhanced Transthoracic Echocardiography Prior to Continuous-Flow Left Ventricular Assist Device Implantation. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Dashwood A, Laher S, Wang C, Prabhu A, Tesar P, Ziegenfuss M, Wong Y, Javorsky G, Smith I, Platts D, Chan W, McKenzie S, Bancroft J, Maddicks-Law J, Thomson B. Single-Centre Experience of Durable Bi-Ventricular Support with HeartWare Continuous Flow, Centrifugal Ventricular Assist Devices (HeartWare BiVADs). Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Lau K, Bancroft J, McKenzie S, Javorsky G, Chan W, Wong Y, Thomson B, Prabhu A, Fraser J, Platts D. Explant of Heartware Biventricular Assist Devices Following Myocardial Recovery After Peripartum Cardiomyopathy. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Koitka K, Shiino K, Kelly N, Lam A, Platts D, Scalia G, Chan J. Strain Assessment of Left Atrial Function in Biopsy-Proven Cardiac Amyloidosis. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Dashwood A, Rusli S, Thomson B, Prabhu A, Platts D, Korczyk D, Hill J, Godbolt D, Small A, Wong Y. Rare Case of Advanced Non-Tropical, Isolated Right Ventricular Endomyocardial Fibrosis. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Koitka K, Lau K, Habibian M, Lin A, Putrino A, Platts D, Chan J, Walters D, Scalia G. A Percutaneous Solution for Treatment of a Large, Ischaemic Ventricular Septal Defect Presenting with Cardiogenic Shock. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Scalia G, Kelly N, Platts D, Burstow D, Habibian M, Putrino A, Poon K, Chan J, Hamilton-Craig C, Walters D. The P2LE2ATS Score: A Revolutionary New way To Estimate Left Heart Filling Pressures Using Doppler Echocardiography. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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26
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Koitka K, Lau K, Putrino A, Habibian M, Lin A, Platts D, Chan J, Walters D, Scalia G. Percutaneous Transcatheter Edwards S3 Valve-in-Valve Implantation for Severe Prosthetic Mitral Valve Regurgitation. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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27
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Lau K, Hamilton-Craig C, Haqqani H, Putrino A, Walters D, Platts D. Coronary Steal Phenomenon and Altered Myocardial Microcirculation Demonstrated by Contrast Enhanced Echocardiography in Apical Hypertrophic Cardiomyopathy Presenting as an Acute Coronary Syndrome. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Arefin A, Huang JH, Platts D, Hypes VD, Harris JF, Iyer R, Nath P. Fabrication of flexible thin polyurethane membrane for tissue engineering applications. Biomed Microdevices 2017; 19:98. [DOI: 10.1007/s10544-017-0236-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Abstract
OBJECTIVE To examine whether providing thermal clothing improved the health of patients with heart failure during winter. DESIGN Parallel group randomised controlled trial. SETTING Large public hospital in Brisbane during winter 2016. PARTICIPANTS 91 patients with systolic or diastolic heart failure who were over 50 years old. INTERVENTION 47 patients were randomised to receive thermal clothes (socks, top and hat) and 44 received usual care. Patients could not be blinded to their randomised group. All patients' data were available for the primary outcome which was collected blind to randomised group. MAIN OUTCOME MEASURES The primary outcome was the mean number of days in hospital during winter. Secondary outcomes included quality of life and sleep, and blood tests were collected for cardiovascular risk factors. Participants completed clothing diaries in midwinter which were used to estimate their overall clothing insulation using the 'clo'. Monitors inside the participants' homes recorded indoor temperatures throughout winter. RESULTS The mean number of days in hospital during winter was 4.2 in the usual care group and 3.0 in the thermal clothing group (mean difference -1.2 days, 95% CI -4.8 to 2.5 days). Most participants (85%) in the thermal clothing group reported using the thermals. There was an increase in overall clothing insulation at night in the thermal clothing group (mean difference 0.13 clo, 95% CI 0.03 to 0.23). Most participants in both groups did not wear sufficient clothing (defined as a clo below 1) and regularly experienced indoor temperatures below 18°C during midwinter. CONCLUSIONS There was no clear statistical improvement in health in the thermal clothing group. Efforts to improve health during winter may need to focus on passive interventions such as home insulation rather than interventions that target behaviour change. TRIAL REGISTRATION NUMBER ACTRN12615001023549; Results.
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Affiliation(s)
- Adrian Gerard Barnett
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Queensland, Australia
| | - Ian Stewart
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Queensland, Australia
| | - Andrea Beevers
- Queensland Health, The Prince Charles Hospital, Brisbane, Queensland, Australia
| | - John F Fraser
- Critical Care Research Group (CCRG), The Prince Charles Hospital, Brisbane, Queensland, Australia
| | - David Platts
- Critical Care Research Group (CCRG), The Prince Charles Hospital, Brisbane, Queensland, Australia
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Chan BT, Yeoh HK, Liew YM, Aziz YFA, Sridhar GS, Hamilton-Craig C, Platts D, Lim E. Left ventricular flow propagation velocity measurement: Is it cast in stone? Med Biol Eng Comput 2017; 55:1883-1893. [PMID: 28321684 DOI: 10.1007/s11517-017-1639-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 03/13/2017] [Indexed: 10/19/2022]
Abstract
This study aims to investigate the measurement of left ventricular flow propagation velocity, V p, using phase contrast magnetic resonance imaging and to assess the discrepancies resulting from inflow jet direction and individual left ventricular size. Three V p measuring techniques, namely non-adaptive (NA), adaptive positions (AP) and adaptive vectors (AV) method, were suggested and compared. We performed the comparison on nine healthy volunteers and nine post-infarct patients at four measurement positions, respectively, at one-third, one-half, two-thirds and the conventional 4 cm distances from the mitral valve leaflet into the left ventricle. We found that the V p measurement was affected by both the inflow jet direction and measurement positions. Both NA and AP methods overestimated V p, especially in dilated left ventricles, while the AV method showed the strongest correlation with the isovolumic relaxation myocardial strain rate (r = 0.53, p < 0.05). Using the AV method, notable difference in mean V p was also observed between healthy volunteers and post-infarct patients at positions of: one-half (81 ± 31 vs. 58 ± 25 cm/s), two-thirds (89 ± 32 vs. 45 ± 15 cm/s) and 4 cm (98 ± 23 vs. 47 ± 13 cm/s) distances. The use of AV method and measurement position at one-half distance was found to be the most suitable method for assessing diastolic dysfunction given varying left ventricular sizes and inflow jet directions.
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Affiliation(s)
- Bee Ting Chan
- Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Hak Koon Yeoh
- Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia.,Seri Kembangan Engineering Sdn. Bhd., 61-1, Jalan Anggerik Vanilla T, Kota Kemuning, 40460, Shah Alam, Malaysia
| | - Yih Miin Liew
- Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Yang Faridah Abdul Aziz
- Department of Biomedical Imaging, University Malaya Research Imaging Centre, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | | | - Christian Hamilton-Craig
- Heart and Lung Institute, The Prince Charles Hospital, Chermside, QLD, 4032, Australia.,School of Medicine, University of Queensland, Brisbane, QLD, 4006, Australia
| | - David Platts
- School of Medicine, University of Queensland, Brisbane, QLD, 4006, Australia.,Department of Echocardiography, The Prince Charles Hospital, Chermside, QLD, 4032, Australia
| | - Einly Lim
- Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia.
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31
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Oates M, Habibian M, Lau K, Koitka K, Nair L, Mengel C, Burstow D, Margale S, Thomson B, Scalia G, Platts D. Multimodality Cardiac Imaging for the Assessment of a Left Ventricular Pseudoaneurysm in a Transplanted Heart. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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32
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Obonyo N, Bartnikowski N, Haqqani H, Pedersen S, Millar J, He C, Shiino K, Chan J, Platts D, Raffel O, Gregory S, Fraser J. Heart Failure Pre-Clinical Model Development: Echocardiography and Cardiac Strain Evaluation. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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33
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Lau K, Koitka K, Habibian M, Burstow D, Scalia G, Fraser J, Platts D. Transthoracic Echocardiographic Assessment of Mitral Regurgitation Following HeartWare LVAD Insertion. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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34
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McKillen B, Lau K, Burstow D, Scalia G, Thomson B, Fraser J, Platts D. Role of Echocardiography in the Management of Patients with a Biventricular Ventricular Assist Device. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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35
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Habibian M, Lau K, Koitka K, Burstow D, Scalia G, Thomson B, Platts D. Improved Left Ventricular Visualisation and Reclassification of Thrombus Location Using Contrast Enhanced TTE Following the Dor-procedure. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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36
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Oates M, Habibian M, Margale S, Platts D, Thomson B. A Rare Egg Shaped Left Ventricular Pseudoaneurysm in the Transplanted Heart. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.03.079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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37
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Koitka K, Lau K, Habibian M, Chan W, Mackenzie S, Javorsky G, Wong Y, Bancroft J, Tessar P, Prahbu A, Thompson B, Platts D. Does Left Ventricular Apical Histology Taken During Ventricular Assist Device Insertion Alter Diagnosis in Severe Heart Failure Patients? Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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38
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Roy P, Dashwood A, Platts D, Javorsky G, Chan W, Wong W, McKenzie S. Prevalence of Iron Deficiency in Heart Failure Patients. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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39
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Markham R, Challa A, Cafaro J, Bancroft J, Wockner L, Kyranis S, Hyasat K, Wong Y, McKenzie S, Chan W, Javorsky G, Platts D. Comparison of CoaguChek® XS INR and Laboratory INR in Patients With a Heartware® Continuous Flow Left Ventricular Assist Device. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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40
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Binny S, Dahiya A, Ranjan S, Platts D, Challa P. A Case of Ventricular Septal Defect in a Proximal Right Coronary Artery NSTEMI with Successful Delayed Closure with Amplatzer Occluder Device. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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41
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Kyranis S, Latona J, Savage M, Kelly N, Burstow D, Scalia G, Platts D. Tricuspid Regurgitation Velocity in the Assessment of Pulmonary Hypertension: Is it Accurate at All? Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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42
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Tjahjadi C, Platts D, Walters D, Burstow D, Sedgwick J. The Impact of Transcoronary Ablation of Septal Hypertrophy on Diastology in Hypertrophic Obstructive Cardiomyopathy. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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43
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Mengel C, Platts D. The Incremental Benefit of Contrast Enhanced Transthoracic Echocardiography in the Diagnosis of Non-Tropical Endomyocardial Fibrosis. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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44
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Silvestry F, Plappert T, Hayward C, Platts D, Malek F, Post M, Pistritto A, Gerber I, Piriou N, Ihlemann N, Kaye D, Kratochwil D, Westenfeld R, Penicka M, Lutz M, Braun D, Geis N, Anamelechi K, Sonecki P, Jondeau G, Burkhoff D, Hasenfuss G. 176-76: Baseline characteristics and 6-month echocardiographic assessment of chamber size in the REDUCE Elevated Left Atrial Pressure in Patients with Heart Failure Trial: the first HFpEF device trial. Europace 2016. [DOI: 10.1093/europace/18.suppl_1.i136b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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45
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Hamilton-Craig C, Strugnell W, Gaikwad N, Ischenko M, Speranza V, Chan J, Neill J, Platts D, Scalia GM, Burstow DJ, Walters DL. Quantitation of mitral regurgitation after percutaneous MitraClip repair: comparison of Doppler echocardiography and cardiac magnetic resonance imaging. Ann Cardiothorac Surg 2015; 4:341-51. [PMID: 26309843 DOI: 10.3978/j.issn.2225-319x.2015.05.03] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 04/27/2015] [Indexed: 12/19/2022]
Abstract
OBJECTIVE Percutaneous valve intervention for severe mitral regurgitation (MR) using the MitraClip is a novel technology. Quantitative assessment of residual MR by transthoracic echocardiography (TTE) is challenging, with multiple eccentric jets and artifact from the clips. Cardiovascular magnetic resonance (CMR) is the reference standard for left and right ventricular volumetric assessment. CMR phase-contrast flow imaging has superior reproducibility for quantitation of MR compared to echocardiography. The objective of this study was to establish the feasibility and reproducibility of CMR in quantitating residual MR after MitraClip insertion in a prospective study. METHODS Twenty-five patients underwent successful MitraClip insertion. Nine were excluded due to non-magnetic resonance imaging (MRI) compatible implants or arrhythmia, leaving 16 who underwent a comprehensive CMR examination at 1.5 T (Siemens Aera) with multiplanar steady state free precession (SSFP) cine imaging (cine CMR), and phase-contrast flow acquisitions (flow CMR) at the mitral annulus atrial to the MitraClip, and the proximal aorta. Same-day echocardiography was performed with two-dimensional (2D) visualization and Doppler. CMR and echocardiographic data were independently and blindly analyzed by expert readers. Inter-rater comparison was made by concordance correlation coefficient (CCC) with 95% confidence intervals (CIs), and Bland-Altman (BA) methods. RESULTS Mean age was 79 years, and mean LVEF was 44%±11% by CMR and 54%±16% by echocardiography. Inter-observer reproducibility of echocardiographic visual categorical grading by expert readers was poor, with a CCC of 0.475 (-0.7, 0.74). Echocardiographic Doppler regurgitant fraction reproducibility was modest (CCC 0.59, 0.15-0.84; BA mean difference -3.7%, -38% to 31%). CMR regurgitant fraction reproducibility was excellent (CCC 0.95, 0.86-0.98; BA mean difference -2.4%, -11.9 to 7.0), with a lower mean difference and narrower limits of agreement compared to echocardiography. Categorical severity grading by CMR using published ranges had good inter-observer agreement (CCC 0.86, 0.62-0.95). CONCLUSIONS CMR performs very well in the quantitation of MR after MitraClip insertion, with excellent reproducibility compared to echocardiographic methods. CMR is a useful technique for the comprehensive evaluation of residual regurgitation in patients after MitraClip. Technical limitations exist for both techniques, and quantitation remains a challenge in some patients.
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Affiliation(s)
- Christian Hamilton-Craig
- 1 Heart & Lung Institute, Prince Charles Hospital, Brisbane, Australia ; 2 University of Queensland, Brisbane, Australia ; 3 University of Washington, Seattle, WA, USA ; 4 School of Medicine & Menzies Health Institute, Griffith University, Queensland, Australia
| | - Wendy Strugnell
- 1 Heart & Lung Institute, Prince Charles Hospital, Brisbane, Australia ; 2 University of Queensland, Brisbane, Australia ; 3 University of Washington, Seattle, WA, USA ; 4 School of Medicine & Menzies Health Institute, Griffith University, Queensland, Australia
| | - Niranjan Gaikwad
- 1 Heart & Lung Institute, Prince Charles Hospital, Brisbane, Australia ; 2 University of Queensland, Brisbane, Australia ; 3 University of Washington, Seattle, WA, USA ; 4 School of Medicine & Menzies Health Institute, Griffith University, Queensland, Australia
| | - Matthew Ischenko
- 1 Heart & Lung Institute, Prince Charles Hospital, Brisbane, Australia ; 2 University of Queensland, Brisbane, Australia ; 3 University of Washington, Seattle, WA, USA ; 4 School of Medicine & Menzies Health Institute, Griffith University, Queensland, Australia
| | - Vicki Speranza
- 1 Heart & Lung Institute, Prince Charles Hospital, Brisbane, Australia ; 2 University of Queensland, Brisbane, Australia ; 3 University of Washington, Seattle, WA, USA ; 4 School of Medicine & Menzies Health Institute, Griffith University, Queensland, Australia
| | - Jonathan Chan
- 1 Heart & Lung Institute, Prince Charles Hospital, Brisbane, Australia ; 2 University of Queensland, Brisbane, Australia ; 3 University of Washington, Seattle, WA, USA ; 4 School of Medicine & Menzies Health Institute, Griffith University, Queensland, Australia
| | - Johanne Neill
- 1 Heart & Lung Institute, Prince Charles Hospital, Brisbane, Australia ; 2 University of Queensland, Brisbane, Australia ; 3 University of Washington, Seattle, WA, USA ; 4 School of Medicine & Menzies Health Institute, Griffith University, Queensland, Australia
| | - David Platts
- 1 Heart & Lung Institute, Prince Charles Hospital, Brisbane, Australia ; 2 University of Queensland, Brisbane, Australia ; 3 University of Washington, Seattle, WA, USA ; 4 School of Medicine & Menzies Health Institute, Griffith University, Queensland, Australia
| | - Gregory M Scalia
- 1 Heart & Lung Institute, Prince Charles Hospital, Brisbane, Australia ; 2 University of Queensland, Brisbane, Australia ; 3 University of Washington, Seattle, WA, USA ; 4 School of Medicine & Menzies Health Institute, Griffith University, Queensland, Australia
| | - Darryl J Burstow
- 1 Heart & Lung Institute, Prince Charles Hospital, Brisbane, Australia ; 2 University of Queensland, Brisbane, Australia ; 3 University of Washington, Seattle, WA, USA ; 4 School of Medicine & Menzies Health Institute, Griffith University, Queensland, Australia
| | - Darren L Walters
- 1 Heart & Lung Institute, Prince Charles Hospital, Brisbane, Australia ; 2 University of Queensland, Brisbane, Australia ; 3 University of Washington, Seattle, WA, USA ; 4 School of Medicine & Menzies Health Institute, Griffith University, Queensland, Australia
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McDonald CI, Fung YL, Shekar K, Diab SD, Dunster KR, Passmore MR, Foley SR, Simonova G, Platts D, Fraser JF. The impact of acute lung injury, ECMO and transfusion on oxidative stress and plasma selenium levels in an ovine model. J Trace Elem Med Biol 2015; 30:4-10. [PMID: 25744503 DOI: 10.1016/j.jtemb.2015.01.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2014] [Revised: 12/15/2014] [Accepted: 01/08/2015] [Indexed: 01/27/2023]
Abstract
The purpose of this study was to determine the effects of smoke induced acute lung injury (S-ALI), extracorporeal membrane oxygenation (ECMO) and transfusion on oxidative stress and plasma selenium levels. Forty ewes were divided into (i) healthy control (n=4), (ii) S-ALI control (n=7), (iii) ECMO control (n=7), (iv) S-ALI+ECMO (n=8) and (v) S-ALI+ECMO+packed red blood cell (PRBC) transfusion (n=14). Plasma thiobarbituric acid reactive substances (TBARS), selenium and glutathione peroxidase (GPx) activity were analysed at baseline, after smoke injury (or sham) and 0.25, 1, 2, 6, 7, 12 and 24h after initiation of ECMO. Peak TBARS levels were similar across all groups. Plasma selenium decreased by 54% in S-ALI sheep (1.36±0.20 to 0.63±0.27μmol/L, p<0.0001), and 72% in sheep with S-ALI+ECMO at 24h (1.36±0.20 to 0.38±0.19, p<0.0001). PRBC transfusion had no effect on TBARS, selenium levels or glutathione peroxidase activity in plasma. While ECMO independently increased TBARS in healthy sheep to levels which were similar to the S-ALI control, the addition of ECMO after S-ALI caused a negligible increase in TBARS. This suggests that the initial lung injury was the predominant feature in the TBARS response. In contrast, the addition of ECMO in S-ALI sheep exacerbated reductions in plasma selenium beyond that of S-ALI or ECMO alone. Clinical studies are needed to confirm the extent and duration of selenium loss associated with ECMO.
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Affiliation(s)
- Charles I McDonald
- Critical Care Research Group, The Prince Charles Hospital and The University of Queensland, Chermside, Queensland, Australia; Department of Anaesthesia and Perfusion, The Prince Charles Hospital, Chermside, Queensland, Australia.
| | - Yoke Lin Fung
- Critical Care Research Group, The Prince Charles Hospital and The University of Queensland, Chermside, Queensland, Australia; Inflammation and Healing Research Cluster, School of Health and Sport Sciences, University of the Sunshine Coast, Queensland, Australia.
| | - Kiran Shekar
- Critical Care Research Group, The Prince Charles Hospital and The University of Queensland, Chermside, Queensland, Australia; Adult Intensive Care Service, The Prince Charles Hospital, Chermside, Queensland, Australia.
| | - Sara D Diab
- Critical Care Research Group, The Prince Charles Hospital and The University of Queensland, Chermside, Queensland, Australia.
| | - Kimble R Dunster
- Critical Care Research Group, The Prince Charles Hospital and The University of Queensland, Chermside, Queensland, Australia; Biomedical Engineering and Medical Physics, Science and Engineering Faculty, Queensland University of Technology, Gardens Point, Brisbane, Queensland, Australia.
| | - Margaret R Passmore
- Critical Care Research Group, The Prince Charles Hospital and The University of Queensland, Chermside, Queensland, Australia.
| | - Samuel R Foley
- Critical Care Research Group, The Prince Charles Hospital and The University of Queensland, Chermside, Queensland, Australia.
| | - Gabriela Simonova
- Critical Care Research Group, The Prince Charles Hospital and The University of Queensland, Chermside, Queensland, Australia; Research and Development Division, Australian Red Cross Blood Service, Brisbane, Queensland, Australia.
| | - David Platts
- Critical Care Research Group, The Prince Charles Hospital and The University of Queensland, Chermside, Queensland, Australia; Department of Echocardiography, The Prince Charles Hospital, Chermside, Queensland, Australia.
| | - John F Fraser
- Critical Care Research Group, The Prince Charles Hospital and The University of Queensland, Chermside, Queensland, Australia; Adult Intensive Care Service, The Prince Charles Hospital, Chermside, Queensland, Australia.
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Butler TC, Sedgwick J, Platts D, Burstow DJ, Seaton D. Infected patent foramen ovale (PFO). Int J Cardiovasc Imaging 2015; 31:957-8. [PMID: 25749812 DOI: 10.1007/s10554-015-0634-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Accepted: 03/02/2015] [Indexed: 11/30/2022]
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Platts D, Hunter J, Maxwell R, Latona J, Burstow D, Scalia G. INCREMENTAL VALUE OF THE NOVEL MARKER, “ECHOCARDIOGRAPHIC PULMONARY-LEFT ATRIAL RATIO” FOR NON-INVASIVE DETERMINATION OF THE AETIOLOGY IN PULMONARY HYPERTENSION. J Am Coll Cardiol 2015. [DOI: 10.1016/s0735-1097(15)61319-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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49
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Yamada A, Ischenko M, Walters D, Hamilton-Craig C, Platts D, Speranza V, Benjamin A, Harten M, Burstow D, Chan J. Short-term effects of transcatheter aortic valve implantation on left ventricular transmural mechanics using multi-layer speckle tracking echocardiography. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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50
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Scalia G, Scalia I, Kierle R, Beaumont R, Cross D, Feenstra J, Burstow D, Fitzgerald B, Platts D. ePLAR - The echocardiographic pulmonary to left atrial ratio - a novel non-invasive parameter to differentiate pre-capillary and post-capillary pulmonary hypertension. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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