Clinical Impact of Time Delay on 1-Year Mortality in Patients with ST-Segment Elevation Myocardial Infarction

ST분절 상승 심근경색증 환자에서 시간 지연이 사망률에 미치는 영향

  • Park, Yong-Kyu (Department of Internal Medicine, Chungnam National University School of Medicine) ;
  • Jeong, Jin-Ok (Department of Internal Medicine, Chungnam National University School of Medicine) ;
  • Park, Jae-Ho (Department of Internal Medicine, Chungnam National University School of Medicine) ;
  • Lee, Hyeon-Seok (Department of Internal Medicine, Chungnam National University School of Medicine) ;
  • Lee, Young-Dal (Department of Internal Medicine, Chungnam National University School of Medicine) ;
  • Choi, Ung-Lim (Department of Internal Medicine, Chungnam National University School of Medicine) ;
  • Jin, Sun-Ah (Department of Internal Medicine, Chungnam National University School of Medicine) ;
  • Sin, Sung-Kyun (Department of Internal Medicine, Chungnam National University School of Medicine) ;
  • Kim, Jun-Hyung (Department of Internal Medicine, Chungnam National University School of Medicine) ;
  • Park, Jae-Hyeong (Department of Internal Medicine, Chungnam National University School of Medicine) ;
  • Lee, Jae-Hwan (Department of Internal Medicine, Chungnam National University School of Medicine) ;
  • Choi, Si-Wan (Department of Internal Medicine, Chungnam National University School of Medicine) ;
  • Jeong, Myung-Ho (Department of Internal Medicine, The Heart Center of Chonnam National University Hospital) ;
  • Chae , Shung-Chull (Kyungpook National University School of Medicine) ;
  • Hur, Seung-Ho (Keimyung University School of Medicine) ;
  • Chae, Jei-Keon (Chonbuk National University Medical School) ;
  • Kim, Young-Jo (Department of Internal Medicine, Yeungnam University College of Medicine) ;
  • Rhew, Jay-Young (Jeonju Presbyterian Medical Center) ;
  • Seong, In-Whan (Department of Internal Medicine, Chungnam National University School of Medicine) ;
  • Korea Acute-Myocardial-Infarction-Registry-Investigators, Korea Acute-Myocardial-Infarction-Registry-Investigators (Korea Acute Myocardial Infarction Registry Investigators)
  • 박용규 (충남대학교 의학전문대학원 충남대학교병원 심혈관센터) ;
  • 정진옥 (충남대학교 의학전문대학원 충남대학교병원 심혈관센터) ;
  • 박재호 (충남대학교 의학전문대학원 충남대학교병원 심혈관센터) ;
  • 이현석 (충남대학교 의학전문대학원 충남대학교병원 심혈관센터) ;
  • 이영달 (충남대학교 의학전문대학원 충남대학교병원 심혈관센터) ;
  • 최웅림 (충남대학교 의학전문대학원 충남대학교병원 심혈관센터) ;
  • 진선아 (충남대학교 의학전문대학원 충남대학교병원 심혈관센터) ;
  • 신성균 (충남대학교 의학전문대학원 충남대학교병원 심혈관센터) ;
  • 김준형 (충남대학교 의학전문대학원 충남대학교병원 심혈관센터) ;
  • 박재형 (충남대학교 의학전문대학원 충남대학교병원 심혈관센터) ;
  • 이재환 (충남대학교 의학전문대학원 충남대학교병원 심혈관센터) ;
  • 최시완 (충남대학교 의학전문대학원 충남대학교병원 심혈관센터) ;
  • 정명호 (전남대학교 의과대학 전남대학교병원 심장센터) ;
  • 채성철 (경북대학교 의학전문대학원) ;
  • 허승호 (계명대학교 의과대학) ;
  • 채제건 (전북대학교 의학전문대학원) ;
  • 김영조 (영남대학교 의과대학 내과학교실) ;
  • 류제영 (전주예수병원 내과) ;
  • 성인환 (충남대학교 의학전문대학원 충남대학교병원 심혈관센터) ;
  • Korea Acute Myocardial Infarction Registry 연구자 (Korea Acute Myocardial Infarction Registry 연구자)
  • Published : 2011.08.01

Abstract

Background/Aims: The delay between the onset of myocardial infarction symptoms and primary percutaneous coronary intervention (PCI) is an important prognostic factor in patients with ST-segment elevation acute myocardial infarction (STEMI). We reviewed this delay in patients with STEMI and analyzed clinical outcomes. Methods: The study enrolled 3,399 patients (age, 61.4 ${\pm}$ 12.8 years; 25.6% women) with STEMI who underwent primary PCI within 12 hours of symptom onset between October 2005 and February 2008 from the Korea Acute Myocardial Infarction Registry. The patients were divided into two groups according to the symptom-to-balloon time: group I (${\leq}$ 3 hours, n = 955) and group II (> 3 hours, n = 2444). The in-hospital mortality rates and 1-year mortality and major adverse cardiac event (MACE) rates were compared between the two groups. Results: The mean time interval from the onset of symptoms to arrival at the emergency room (ER) was 188.0 ${\pm}$ 133.6 minutes (median, 152 minutes). The mean time interval from the ER to reperfusion (door-to-balloon time) was 97.8 ${\pm}$ 67.9 minutes (median, 80 minutes). The mean time interval from the onset of symptoms to reperfusion (symptom-to-balloon time) was 285.8 ${\pm}$ 146.2 minutes (median 250 minutes). The in-hospital mortality rate was significantly lower in group I as compared with group II (3.6% versus 5.2%, p = 0.044). The 1-year mortality rate was also significantly lower in group I (4.7% versus 7.2%, p = 0.012), while the 1-year MACE rate was not significantly different between groups (17.9% versus 20.4%, p = 0.179). Conclusions: This study demonstrates that there is a significant pre-hospital time delay in patients with STEMI in Korea and this time delay is associated with increased 1-year mortality.

목적: ST분절 상승 심근경색증 환자에서 증상 발생 후 일차적 관동맥 중재술까지의 시간지연은 중요한 예후인자로 알려져 있다. 본 연구는 ST분절 상승 심근경색증 환자에서 시간지연을 분석하고 증상 발생 후 일차적 관동맥 중재술까지의 시간이 임상 성적에 미치는 영향을 알아보고자 하였다. 방법: 한국인 급성 심근경색증 등록 연구사업(Korea Acute Myocardial Infarction Registry, KAMIR)에 등록된 환자 중 증상 발생 후 12시간 내에 일차적 관동맥 중재술을 시행 받은 ST상승 급성심근경색증 환자 3,399명을 대상으로 하였다. 증상 발생 후 일차적 관동맥 중재술 까지의 시간이 3시간 이내를 I군(n = 955), 3시간 이상을 II군(n = 2,444)으로 분류하여 병원 내 사망률, 1년 사망률과 주요 심혈관계 합병증 발생률을 비교하였다. 결과: 증상 발생 후 병원 도착까지의 평균 시간은 188.0 ${\pm}$ 133.6분(중앙값: 152), 병원 도착 후 일차적 관동맥 중재술까지의 시간은 평균 97.8 ${\pm}$ 67.9분(중앙값: 80), 증상 발생 후 일차적 관동맥 중재술까지의 시간은 285.8 ${\pm}$ 146.2분(중앙값: 250)이었다. 병원 내 사망률은 I군(3.6%)에서 II군(5.2%, p = 0.044)보다 유의하게 낮았으며, 1년 사망률도 I군(4.7%)에서 II군(7.2%, p = 0.012)보다 유의하게 낮았다. 1년 주요 심혈관계 합병증 발생률은 양 군 간에 유의한 차이는 없었다(I군 17.9%, II군 20.4%, p = 0.179). 결론: ST분절 상승 심근경색증 환자에서 병원 도착 전 많은 시간이 지연되며 이러한 시간 지연이 1년 사망률과 연관성이 있음을 알 수 있었다.

Keywords

References

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