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Leung, Thomas

https://orcid.org/0000-0001-8193-0709

Mayo Clinic

Chinese University of Hong Kong

Citations 2

A Systematic Literature Review on the Burden of Disease for Patients With Moderate to Severe Acute Ischemic Stroke
Quinn, Terry , Kitagawa, Kazuo , Leung, Thomas , Molina, Carlos A. , Rabinstein, Alejandro, Bentley, Roy , Heuser, Maria, Nair, Vedes, Leung, Thomas , Rabinstein, Alejandro A. , Henry, Owen, Saver, Jeffrey L.

Medicine | January 21, 2025 | Volume: 104 | Issue: 3 | Pages: e41249

10.1097/md.0000000000041249 Get It

Background: A vast amount of literature is available on the burden of acute ischemic stroke (AIS). Yet, most information on AIS burden does not stratify by stroke severity, and the inclusion of mild strokes (National Institute of Health Stroke Scale < 5) might obscure the true impact of moderate-to-severe AIS. Therefore, it is important to understand the literature as it pertains to the epidemiological, clinical, humanistic, and economic burden of moderate-to-severe AIS from a global perspective. Methods: A systematic literature review (SLR) was conducted, including articles published between January 2015 and June 2023. The clinical burden search focused on patients with moderate or severe AIS. Due to the paucity of evidence, the humanistic and economic burdens were evaluated based on overall AIS studies. Abstract and full-text screening were conducted by 2 reviewers, with data extraction completed by 1 reviewer. In all, 136 studies were included in the SLR. Results: AIS caused a substantial burden for patients and the healthcare system. The clinical burden of AIS (specifically severe AIS) resulted in high mortality and worse functional outcomes across multiple demographics (female sex, older age, and patients with comorbidities). The economic burden of overall AIS was substantial, with inpatient costs as the primary driver (a mean or median stay of 7 days). The highest inpatient costs were reported in South Korea ($45,180) and the United States ($38,470). Conclusions: The review highlighted the huge burden of moderate-to-severe AIS, with patients experiencing worse outcomes with increased stroke severity. Further focus is needed on outcomes relating to moderate-to-severe AIS to fully understand the burden of stroke in this patient population.
Mechanical Thrombectomy Global Access For Stroke (MT-GLASS): A Mission Thrombectomy (MT-2020 Plus) Study
Asif, Kaiz , Otite, Fadar Oliver , Desai, Shashvat M. , Herial, Nabeel , Inoa, Violiza , Al‐Mufti, Fawaz , Dmytriw, Adam A. , Castonguay, Alicia C. , Khandelwal, Priyank , Potter‐Vig, Jennifer , Szeder, Viktor , Kulman, Tanzila, Masoud, Hesham , Tóth, Gábor , Limaye, Kaustubh , Aroor, Sushanth , Brinjikji, Waleed , Rai, Ansaar , Gebreyohanns, Mehari , Leung, Thomas , Mansour, Malek , Huded, Vikram , Zaidat, Osama O. , Sylaja, PN , Yavagal, Dileep R. , Cirio, Juan , Lylyk, Pedro , Ferrario, Ángel, Plaghos, Luis Lemme, Ibrahim, Wael Hamed, Alnidawi, Firas , Islam, Sirajee Shafiqul, Shahidullah, Mohammad, Saavedra, Víctor Villarroel, Alverne, Francisco Josà Mont’, Magalhães, Pedro , Sirakov, Stanimir , Kalpachki, Rosen, Alioski, Nurfet, Lamou, Eric Gueumekane Bila , Rowe, Daidre, Gayle, Francene , Souza, Romnesh de, Ramos, Cristina , GarcÃa, Amaury, Ali, Amza , Sandy, Sherry , Guzman, Tony Fabian Alvarez, Villarraga, Alejandro, Estrada, Carolina, Pabón, B , Adebayo, Philip , ABDO, GERMAN, S, Nelson Maldonado, Khinikadze, Mirza, Tsiskaridze, Alexander , Syrmos, Νikolaos , Mitsias, Panayiotis , Das, Biplab , Gupta, Vipul , Karapurkar, Anil, Stivastava, M.V.Padma, Alurkar, Anand, Sharma, Arvind , Lahoti, Satish, Kuruttukulam, Gigy , Sari, Ita Muharram , Khassaf, Mustafa Saleem, Nassir, Temeem Majid, Yamagami, Hiroshi , Dababneh, Haitham, Aladham, Farid A., Berdikhojayev, Mynzhylky , Medukhanova, Sabina , Kikano, Raghid, Alaraj, Ali , Ahdab, Rechdi , Zaidi, Wan Asyraf Wan , Kadir, Khairul Azmi Abd, Gongora, Fernando, Jambaldorj, Ariunaa , XXX, Ganbaatar, Shwe, Zarni Myint, Thit, Win Min , RAYO, ERWIN E., Makanjuola, Akintomiwa , Rashid, Umair, Mernes, Ricardo, Paniagua, Osvaldo, GALLO, MARLA, Moquillaza, Manuel, Collantes, Maria Epifania , Mariano, Manuel, Kobayashi, Adam , Rodríguez‐Mercado, Rafael, Guardia, Rodolfo Alcedo, Imam, Yahia , Ahmed, Ayman Z., Al-Jehani, Hosam , Lee, Wickly, Klepanec, Andrej , Brey, Naeem , Rossouw, Anastasia, Silva, Prasad De, Gunasekera, Harsha, Ranawaka, Udaya K. , Osman, Haytham , El-Sadig, Sarah , Suwanwela, Nijasri C., Akarathanawat, Wasan, Tantivatana, Jarturon , Hammami, Nadia, Giray, Semih , Lebedynets, Dmytro , Konotopchik, Stanislav, John, Seby , Hussain, Syed , Novakovic-White, Robin, Perue, Gillian L Gordon, Then, Ryna , Berrutti, Claudio, Crosa, Roberto , Nguyen, Huy Thang, Le, Huynh Vu, vu, Tran thanh, Asif, Kaiz S , Otite, Fadar O , Jadhav, Ashutosh P , Dmytriw, Adam A , Castonguay, Alicia , Khandelwal, Priyank , Szeder, Viktor , Urrutia, Victor C , Masoud, Hesham , Toth, Gabor , Limaye, Kaustubh , Brinjikji, Waleed , Rai, Ansaar , Pandian, Jeyaraj , Leung, Thomas , Mansour, Ossama , Demchuk, Andrew M , Martins, Sheila , Zaidat, Osama O , Huo, Xiaochuan , Campbell, Bruce , Miao, Zhongrong , Saver, Jeffrey , Ortega-Gutierrez, Santiago , Yavagal, Dileep R , Crosa, Roberto , Alaraj, Ali , Al-Mufti, Fawaz , Jadhav, Ashutosh P. , Urrutia, Victor , Pandian, Jeyaraj , Demchuk, Andrew M. , Saver, Jeffrey L. , Arroyo, José, Yan, Bernard , Chandra, Ronil Vikesh , Shahidullah, Mohammad, Alverne, F Mont, Silva, Gisele Sampaio , Shankar, Jai , Stotts, Grant , Ramos, Cristina, Lavados, Pablo M. , Rivera, Rodrigo , Krajina, Antonı́n , Tomek, Aleš , Hassan, Farouk , Khedr, Eman M. , Nadareishvili, Zurab , Roy, Jayanta , Gupta, Vivek , Khurana, Dheeraj , Kumar, Rahul Kewal , Sani, Achmad Firdaus , Sakai, Nobuyuki , Aladham, Farid, Kikano, Raghid , Araúz, Antonio , Góngora‐Rivera, Fernando , Shwe, Zarni Myint, Ranta, Annemarei , Wu, Teddy Y , Owolabi, Mayowa , Ahmad, Saima , Wasay, Mohammad , Alhazzani, Adel Ali , Zeleňák, Kamil , Krastev, Georgi , Frol, Senta , Hammami, Nadia, Sassi, Samia Ben , Özdemi̇r, Atilla Özcan , Конотопчик, С. В., Perue, Gillian Gordon

Circulation | March 8, 2023 | Volume: 147 | Issue: 16 | Pages: 1208-1220

10.1161/circulationaha.122.063366 Get It

Background: Despite the well-established potent benefit of mechanical thrombectomy (MT) for large vessel occlusion (LVO) stroke, access to MT has not been studied globally. We conducted a worldwide survey of countries on 6 continents to define MT access (MTA), the disparities in MTA, and its determinants on a global scale. Methods: Our survey was conducted in 75 countries through the Mission Thrombectomy 2020+ global network between November 22, 2020, and February 28, 2021. The primary end points were the current annual MTA, MT operator availability, and MT center availability. MTA was defined as the estimated proportion of patients with LVO receiving MT in a given region annually. The availability metrics were defined as ([current MT operators×50/current annual number of estimated thrombectomy-eligible LVOs]×100 = MT operator availability) and ([current MT centers×150/current annual number of estimated thrombectomy-eligible LVOs]×100= MT center availability). The metrics used optimal MT volume per operator as 50 and an optimal MT volume per center as 150. Multivariable-adjusted generalized linear models were used to evaluate factors associated with MTA. Results: We received 887 responses from 67 countries. The median global MTA was 2.79% (interquartile range, 0.70–11.74). MTA was <1.0% for 18 (27%) countries and 0 for 7 (10%) countries. There was a 460-fold disparity between the highest and lowest nonzero MTA regions and low-income countries had 88% lower MTA compared with high-income countries. The global MT operator availability was 16.5% of optimal and the MT center availability was 20.8% of optimal. On multivariable regression, country income level (low or lower–middle versus high: odds ratio, 0.08 [95% CI, 0.04–0.12]), MT operator availability (odds ratio, 3.35 [95% CI, 2.07–5.42]), MT center availability (odds ratio, 2.86 [95% CI, 1.84–4.48]), and presence of prehospital acute stroke bypass protocol (odds ratio, 4.00 [95% CI, 1.70–9.42]) were significantly associated with increased odds of MTA. Conclusions: Access to MT on a global level is extremely low, with enormous disparities between countries by income level. The significant determinants of MT access are the country’s per capita gross national income, prehospital LVO triage policy, and MT operator and center availability.