The Korean Journal of Medicine

  • 제93권6호
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  • Pages.538-547
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  • 2018
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  • 1738-9364(pISSN)
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  • 2289-0769(eISSN)
대한내과학회 (The Korean Association of Internal Medicine)
권호 표지
DOI QR코드

DOI QR Code

젊은 급성 심근경색증 환자에서 좌심실 이완 기능 및 충만압이 관상동맥중재술 후 임상 경과에 미치는 영향

Impacts of Diastolic Function on Clinical Outcomes in Young Patients with Acute Myocardial Infarction

  • 조은영 (전남대학교병원 심장센터) ;
  • 정명호 (전남대학교병원 심장센터) ;
  • 윤현주 (전남대학교병원 심장센터) ;
  • 김용철 (전남대학교병원 심장센터) ;
  • 손석준 (전남대학교 의과대학 예방의학교실) ;
  • 김민철 (전남대학교병원 심장센터) ;
  • 심두선 (전남대학교병원 심장센터) ;
  • 홍영준 (전남대학교병원 심장센터) ;
  • 김주한 (전남대학교병원 심장센터) ;
  • 안영근 (전남대학교병원 심장센터) ;
  • 조재영 (전남대학교병원 심장센터) ;
  • 김계훈 (전남대학교병원 심장센터) ;
  • 박종춘 (전남대학교병원 심장센터)
  • Cho, Eun Young (The Heart Center, Chonnam National University Hospital) ;
  • Jeong, Myung Ho (The Heart Center, Chonnam National University Hospital) ;
  • Yoon, Hyun Ju (The Heart Center, Chonnam National University Hospital) ;
  • Kim, Yong Cheol (The Heart Center, Chonnam National University Hospital) ;
  • Sohn, Seok-Joon (Department of Preventive Medicine, Chonnam National University Medical School) ;
  • Kim, Min Chul (The Heart Center, Chonnam National University Hospital) ;
  • Sim, Doo Sun (The Heart Center, Chonnam National University Hospital) ;
  • Hong, Young Joon (The Heart Center, Chonnam National University Hospital) ;
  • Kim, Ju Han (The Heart Center, Chonnam National University Hospital) ;
  • Ahn, Youngkeun (The Heart Center, Chonnam National University Hospital) ;
  • Cho, Jae Young (The Heart Center, Chonnam National University Hospital) ;
  • Kim, Kye Hun (The Heart Center, Chonnam National University Hospital) ;
  • Park, Jong Chun (The Heart Center, Chonnam National University Hospital)
  • 투고 : 2017.09.27
  • 심사 : 2018.01.22
  • 발행 : 2018.12.01
⟨ 이전 논문 다음 논문 ⟩

초록

목적: 급성 심근경색증 환자에서 좌심실 이완 기능과 좌심실 충만압은 환자의 예후와 관련되어 있다고 알려져 있다. 이 연구의 목적은 젊은 급성 심근경색증 환자에서 좌심실 이완 기능 저하 및 충만압 상승에 따른 임상 경과의 차이를 파악하고자 하였다. 방법: 2011년 1월부터 2015년 8월까지 Korea Acute Myocardial Infarction Registry-National Institute of Health (KAMIR-NIH)에 등록된 환자 중 젊은 급성 심근경색증(남 < 45세, 여 < 55세)으로 전남대학교병원에 입원한 환자 240명중에서 관상동맥중재술을 시술받고 2년 동안 임상 추적 관찰이 되어 분석 가능한 환자 200명(남 : 여 = 160명 : 40명)을 대상으로 하였다. 200명의 환자를 좌심실 이완 기능이 정상인 군(46명, $39.5{\pm}5.3$세)과 비정상군(154명, $43.5{\pm}5.1$세)으로 나누었다. 좌심실 충만압을 측정하였으며, 좌심실 충만압 상승을 E/e' ratio 15 이상으로 정의하였다. 좌심실 이완 기능 정상군과 비정상군으로 나누었고 정상 좌심실 충만압군과 좌심실 충만압 상승군으로 나누어 각각 주요 심장 사건을 분석하였다. 주요 심장 사건은 사망, 심근경색증의 재발 및 재관류술로 정의하였다. 결과: 연구 대상자를 평균 $40.9{\pm}11.6$개월 동안 임상적으로 추적 관찰한 결과, 이 중 26명(13%)에서 사망, 심근경색증재발 및 재관류등의 주요 심장 사건이 발생하였고, 좌심실이완 기능 정상군과 비정상군 간의 유의한 차이는 없었다(p = 0.810). 또한 좌심실 이완 기능을 정상군과 1도 이완기기능 장애군과 2도 이완기 기능 장애군으로 나누어서 추가 분석하였다. 2도 이완기 기능 장애군에서 심근경색증 재발은 유의한 차이를 보였지만(p = 0.006), 주요 심장 사건과 유의한 차이는 없었다(p = 0.081). 그러나 좌심실 충만압 상승군에서 정상 좌심실 충만압을 가진 환자군에 비하여 주요 심장 사건의 발생률은 유의한 차이가 있었다(p < 0.001). 다변량 분석 결과 주요 심장 사건 발생의 독립적인 인자는 E/e' ratio 15 이상 환자로 파악되었다(p = 0.019). Kaplan-Meier 생존 곡선을 이용한 사망률을 추적한 결과 좌심실 수축 기능 40% 미만인 환자(p < 0.001)와 E/e' ratio 15 이상 환자(p = 0.004)에서 유의하게 생존율이 낮았다. 결론: 높은 좌심실 충만압은 젊은 급성 심근경색증 환자의 예후에 대한 독립적 예측 인자였으며, 좌심실 충만압의 측정은 젊은 급성 심근경색증 환자에서 심근경색증 후 고위험 환자군 분류에 유용할 것으로 기대된다.

Background/Aims: The impact of left ventricular (LV) diastolic function and filling pressure on clinical outcomes in young patients with acute myocardial infarction (AMI) has been poorly studied. Therefore, the aim of this study was to investigate the impact of LV diastolic function and LV filling pressure on major adverse cardiac events (MACEs) in young patients with AMI. Methods: A total of 200 young patients (males < 45 year, females < 55 year) with AMI were divided into two groups according to the diastolic function; normal (n = 46, $39.5{\pm}5.3$ years) versus abnormal (n = 154, $43.5{\pm}5.1$ years). Results: Despite regional wall motion abnormalities, normal LV diastolic function was not uncommon in young AMI patients (23.0%). During the 40 months of clinical follow-up, MACEs developed in 26 patients (13.0%); 14 re-percutaneous coronary intervention (7.0%), 8 recurrent MI (4.0%), and 4 deaths (2.0%). MACEs did not differ between the normal and abnormal diastolic function group (13.6% vs. 10.9%, p = 0.810), but MACEs were significantly higher in the high LV filling pressure group than the normal LV filling pressure group (36.8% vs. 10.5%, p < 0.001). On multivariate analysis, high LV filling pressure was an independent predictor of MACEs (hazard ratio 3.022, 95% confidence interval 1.200-7.612, p = 0.019). Conclusions: This study suggested that measurement of the LV filling pressure (E/e' ratio) would be useful in the risk stratification of young patients with AMI. However, it would be necessary to monitor this category of patient more carefully.

키워드

참고문헌

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