Improving the Clinical Outcome in Stroke Patients Receiving Thrombolytic Or Endovascular Treatment in Korea: from the SECRET Study
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Journal of Clinical Medicine Article Improving the Clinical Outcome in Stroke Patients Receiving Thrombolytic or Endovascular Treatment in Korea: from the SECRET Study Young Dae Kim 1 , Ji Hoe Heo 1, Joonsang Yoo 1,2, Hyungjong Park 1,2, Byung Moon Kim 3, Oh Young Bang 4, Hyeon Chang Kim 5 , Euna Han 6 , Dong Joon Kim 3, JoonNyung Heo 1 , Minyoung Kim 1, Jin Kyo Choi 1, Kyung-Yul Lee 7, Hye Sun Lee 8 , Dong Hoon Shin 9 , Hye-Yeon Choi 10, Sung-Il Sohn 2 , Jeong-Ho Hong 2, Jang-Hyun Baek 11,12, Gyu Sik Kim 13, Woo-Keun Seo 4 , Jong-Won Chung 4, Seo Hyun Kim 14, Tae-Jin Song 15, Sang Won Han 16 , Joong Hyun Park 16, Jinkwon Kim 7,17 , Yo Han Jung 18, Han-Jin Cho 19, Seong Hwan Ahn 20 , Sung Ik Lee 21, Kwon-Duk Seo 13,21 and Hyo Suk Nam 1,* 1 Department of Neurology, Yonsei University College of Medicine, Seoul 03722, Korea; [email protected] (Y.D.K.); [email protected] (J.H.H.); [email protected] (J.Y.); [email protected] (H.P.); [email protected] (J.H.); [email protected] (M.K.); [email protected] (J.K.C.) 2 Department of Neurology, Brain Research Institute, Keimyung University School of Medicine, Daegu 41931, Korea; [email protected] (S.-I.S.); [email protected] (J.-H.H.) 3 Department of Radiology, Yonsei University College of Medicine, Seoul 03722, Korea; [email protected] (B.M.K.); [email protected] (D.J.K.) 4 Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Korea; [email protected] (O.Y.B.); [email protected] (W.-K.S.); [email protected] (J.-W.C.) 5 Department of Preventive Medicine, Yonsei University College of Medicine, Seoul 03722, Korea; [email protected] 6 College of Pharmacy, Yonsei Institute for Pharmaceutical Research, Yonsei University, Incheon 21983, Korea; [email protected] 7 Department of Neurology, Gangnam Severance Hospital, Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul 06273, Korea; [email protected] (K.-Y.L.); [email protected] (J.K.) 8 Department of Research Affairs, Biostatistics Collaboration Unit, Yonsei University College of Medicine, Seoul 06273, Korea; [email protected] 9 Department of Neurology, Gachon University Gil Medical Center, Incheon 21565, Korea; [email protected] 10 Department of Neurology, Kyung Hee University Hospital at Gangdong, Kyung Hee University School of Medicine, Seoul 05278, Korea; [email protected] 11 Department of Neurology, National Medical Center, Seoul 04564, Korea; [email protected] 12 Department of Neurology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul 03181, Korea 13 Department of Neurology, National Health Insurance Service Ilsan Hospital, Ilsan 10444, Korea; [email protected] (G.S.K.); [email protected] (K.-D.S.) 14 Department of Neurology, Yonsei University Wonju College of Medicine, Wonju 26426, Korea; [email protected] 15 Department of Neurology, Seoul Hospital, Ewha Womans University College of Medicine, Seoul 07804, Korea; [email protected] 16 Department of Neurology, Sanggye Paik Hospital, Inje University College of Medicine, Seoul 01757, Korea; [email protected] (S.W.H.); [email protected] (J.H.P.) 17 Department of Neurology, CHA Bundang Medical Center, CHA University, Seongnam 13496, Korea 18 Department of Neurology, Changwon Fatima Hospital, Changwon 51394, Korea; [email protected] 19 Department of Neurology, Pusan National University School of Medicine, Busan 49241, Korea; [email protected] 20 Department of Neurology, Chosun University School of Medicine, Gwangju 61453, Korea; [email protected] J. Clin. Med. 2020, 9, 717; doi:10.3390/jcm9030717 www.mdpi.com/journal/jcm J. Clin. Med. 2020, 9, 717 2 of 15 21 Department of Neurology, Sanbon Hospital, Wonkwang University School of Medicine, Sanbon 15865, Korea; [email protected] * Correspondence: [email protected]; Tel.: +82-2-2228-1617; Fax: +82-2-393-0705 Received: 23 January 2020; Accepted: 2 March 2020; Published: 6 March 2020 Abstract: We investigated whether there was an annual change in outcomes in patients who received the thrombolytic therapy or endovascular treatment (EVT) in Korea. This analysis was performed using data from a nationwide multicenter registry for exploring the selection criteria of patients who would benefit from reperfusion therapies in Korea. We compared the annual changes in the modified Rankin scale (mRS) at discharge and after 90 days and the achievement of successful recanalization from 2012 to 2017. We also investigated the determinants of favorable functional outcomes. Among 1230 included patients, the improvement of functional outcome at discharge after reperfusion therapy was noted as the calendar year increased (p < 0.001). The proportion of patients who were discharged to home significantly increased (from 45.6% in 2012 to 58.5% in 2017) (p < 0.001). The successful recanalization rate increased over time from 78.6% in 2012 to 85.1% in 2017 (p = 0.006). Time from door to initiation of reperfusion therapy decreased over the years (p < 0.05). These secular trends of improvements were also observed in 1203 patients with available mRS data at 90 days (p < 0.05). Functional outcome was associated with the calendar year, age, initial stroke severity, diabetes, preadmission disability, intervals from door to reperfusion therapy, and achievement of successful recanalization. This study demonstrated the secular trends of improvement in functional outcome and successful recanalization rate in patients who received reperfusion therapy in Korea. Keywords: reperfusion; therapy; ischemic stroke; outcome 1. Introduction Stroke is one of the diseases with the highest burden worldwide. Although the age-standardized risk of stroke or case fatality has been improving, there is still an increase in the absolute number of stroke or stroke-related death [1]. The Global Burden of Disease Study demonstrated that the burden of cerebrovascular disease increased over several decades and ranked second in the highest burden of diseases in 2015 [2]. Intravenous tissue plasminogen activator (IV t-PA) therapy and endovascular treatment (EVT) are established treatments for eligible patients with acute ischemic stroke [3,4]. Although these modalities can lead to successful recanalization, which is a strong determinant of a good outcome [5], many patients who received reperfusion therapy did not achieve a favorable outcome [6]. Over the past decades, there has been an improvement in the stroke care program, imaging techniques, treatment devices, and experience in EVT. As a result, overall outcome of reperfusion therapy for acute ischemic stroke could be improved at a national level [7]. In Korea, there have been improvements in the care system for acute stroke patients, including easy and rapid accessibility to medical services, establishment of stroke units or centers, and acute stroke codes for reperfusion therapy [8–10]. Considering these secular trends in the stroke care system, clinical and radiologic outcomes after reperfusion therapy might have changed in Korea. We investigated whether there was an annual change in outcomes in patients who received IV t-PA therapy or EVT in Korea. We also determined which factors had played a role in these changes using the nationwide thrombolytic and EVT registry. J. Clin. Med. 2020, 9, 717 3 of 15 2. Materials and Methods 2.1. Patients Inclusion The study population was derived from the Selection Criteria in Endovascular Thrombectomy and thrombolytic therapy (SECRET) registry (Clinicaltrials.gov NCT02964052, https://clinicaltrials.gov/ct2/ show/NCT02964052?term=NCT02964052&rank=1). The SECRET registry is a nationwide multicenter registry for exploring the selection criteria of patients who would benefit from reperfusion therapies. The SECRET registry was started on May 2016. This registry consisted of four parts: (1) clinical information, (2) information on reperfusion therapy, (3) comorbidities, and (4) imaging data. The clinical information section includes the demographics, vascular risk factors, previous medication status, laboratory findings, and neurologic status or premorbidity before stroke. In the reperfusion therapy section, the information on time parameters, angiographic findings before and after treatment, devices used during the procedure, periprocedural complications, and concomitant thrombolytic agents used was collected. The modified Rankin scale (mRS) at discharge and after 90 days, along with mortality within 6 months, was determined in each patient during the follow-up. If a patient died, we also assessed the cause of death. For the comorbidities section, we determined the presence of the component of the Charlson comorbidity index (CCI) for each patient. In the stroke population, we used a modified version of the CCI, which consisted of 19 diseases, including myocardial infarction, congestive heart failure, peripheral vascular disease, previous stroke, atrial fibrillation, dementia, depression, chronic pulmonary disease, ulcer disease, mild liver disease, moderate or severe renal disease, connective tissue disease or rheumatic disease, anemia, diabetes, acquired immune deficiency syndrome, cancer, leukemia, lymphoma, and metastatic cancer [11]. The imaging data section included the occlusion site, infarction core, collateral status, and thrombus characteristics on thin-section computed tomography (CT). The imaging findings were ascertained by the imaging adjudication committee (6 stroke neurologists and 4 neuroradiologists). The audit was conducted every two weeks, and the data