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KMID : 0361120220360040267
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Korean Journal of Transplantation
2022 Volume.36 No. 4 p.267 ~ p.277
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Trends in contemporary advanced heart failure management: an in-depth review over 30 years of heart transplant service in Hong Kong
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Yue Yan Katherine Fan
Ka Lam Wong
Ka Lai Cally Ho
Tai Leung Daniel Chan
Oswald Joseph Lee
Chi Yui Yung
Kin Shing Lun
Mo Chee Elaine Chau
Shui Wah Clement Chiu
Lik Cheung Cheng
Wing Kuk Timmy Au
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Abstract
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Background : The year 2022 marks the 30th anniversary of heart transplant service in Hong Kong (HK). In this study, we describe prevailing trends and outcomes of advanced heart failure (AHF), including heart transplantations (HTx), in HK over the past 30 years.
Methods : Trends in heart failure prevalence in HK from 1993 to 2021 were analyzed based on data from the Hospital Authority Clinical Data and Reporting System. All AHF patients referred for HTx consideration between 1992 and 2021 were reviewed. The bridge-to-transplant (BTT) utilization of short-term mechanical circulatory support (ST-MCS) devices, including venoarterial extracorporeal membrane oxygenation (VA-ECMO) and durable left ventricular assist devices (LVADs), from 2010 to 2021 was reviewed.
Results : Overall, 237 heart transplants were performed in HK, with 10-year posttransplant and median survival of 68.1% and 18.7 years, respectively. An increase in AHF clinic referrals was correlated with increasing heart failure prevalence (R2=0.635, P<0.001). In total, 146 referrals were made for ST-MCS, and an observed increase in ST-MCS referrals was correlated with increasing VA-ECMO utilization (R2=0.849, P<0.001). Among 62 patients accepted for AHF therapy, those with durable LVAD implementation had better 1-year survival (71.5%) than those receiving an extracorporeal CentriMag (Levitronix) device as BTT (40%, P=0.008). In total, 143 LVADs were implanted, with 130 as BTT or bridge-to-candidacy (BTC) methods. The survival rate among the 130 BTT/BTC LVAD patients resembled that of HTx recipients (73.8% vs. 69.8% at 9 years, P=0.296).
Conclusions : The burden of AHF management has increased and gained complexity over the past 30 years in Hong Kong.
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KEYWORD
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Heart transplantation, Heart-assist devices, Heart failure
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