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J Korean Med Sci. 2009 Oct;24(5):800-806.
Published online 2009 September 23.  doi: 10.3346/jkms.2009.24.5.800.
Copyright © 2009 The Korean Academy of Medical Sciences
Clinical Effects of Hypertension on the Mortality of Patients with Acute Myocardial Infarction
Dong Goo Kang,1 Myung Ho Jeong,2 Yongkeun Ahn,2 Shung Chull Chae,3 Seung Ho Hur,4 Taek Jong Hong,5 Young Jo Kim,6 In Whan Seong,7 Jei Keon Chae,8 Jay Young Rhew,9 In Ho Chae,10 Myeong Chan Cho,11 Jang Ho Bae,12 Seung Woon Rha,13 Chong Jin Kim,14 Yang Soo Jang,15 Junghan Yoon,16 Ki Bae Seung,17 Seung Jung Park,18 and Korea Acute Myocardial Infarction Registry Investigators
1Kwangju Christian Hospital, Gwangju, Korea.
2Chonnam National University, Gwangju, Korea.
3Kyungpook National University, Daegu, Korea.
4Keimyung University Dongsan Medical Center, Daegu, Korea.
5Pusan National University Hospital, Busan, Korea.
6Yeungnam University Hospital, Daegu, Korea.
7Chungnam National University Hospital, Daejeon, Korea.
8Chonbuk National University Hospital, Jeonju, Korea.
9Jeonju Presbyterian Medical Center, Jeonju, Korea.
10Seoul National University Bundang Hospital, Seongam, Korea.
11Chungbuk National University, Cheongju, Korea.
12Konyang University, Daejon, Korea.
13Korea University Guro Hospital, Seoul, Korea.
14Kyunghee University Hospital, Seoul, Korea.
15Yonsei University Severance Hospital, Seoul, Korea.
16Wonju University Hospital, Wonju, Korea.
17Catholic University of Seoul St. Mary's Hospital, Seoul, Korea.
18Asan Medical Center, University of Ulsan, Seoul, Korea.

Address for correspondence: Myung Ho Jeong, M.D. The Heart Center of Chonnam National University Hospital, Chonnam National University Medical School, 8 Hak-dong, Dong-gu, Gwangju 501-757, Korea. Tel: +82.62-220-6243, Fax: +82.62-228-7174, Email: myungho@chollian.net
* Korea Acute Myocardial Infarction Registry (KAMIR) Investigators: Myung Ho Jeong, Young Jo Kim, Chong Jin Kim, Myeong Chan Cho, Young Keun Ahn, Jong Hyun Kim, Shung Chull Chae, Seung Ho Hur, In Whan Seong, Taek Jong Hong, Dong Hoon Choi, Jei Keon Chae, Jae Young Rhew, Doo Il Kim, In Ho Chae, Jung Han Yoon, Bon Kwon Koo, Byung Ok Kim, Myoung Yong Lee, Kee Sik Kim, Jin Yong Hwang, Seok Kyu Oh, Nae Hee Lee, Kyoung Tae Jeong, Seung Jea Tahk, Jang Ho Bae, Seung Woon Rha, Keum Soo Park, Kyoo Rok Han, Tae Hoon Ahn, Moo Hyun Kim, Ju Young Yang, Chong Yun Rhim, Hyeon Cheol Gwon, Seong Wook Park, Young Youp Koh, Seung Jae Joo, Soo Joong Kim, Dong Kyu Jin, Jin Man Cho, Jeong Gwan Cho, Wook Sung Chung, Yang Soo Jang, Ki Bae Seung, and Seung Jung Park.

Received July 04, 2008; Accepted November 22, 2008.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.


Abstract

The incidence of ischemic heart disease has been increased rapidly in Korea. However, the clinical effects of antecedent hypertension on acute myocardial infarction have not been identified. We assessed the relationship between antecedent hypertension and clinical outcomes in 7,784 patients with acute myocardial infarction in the Korea Acute Myocardial Infarction Registry during one-year follow-up. Diabetes mellitus, hyperlipidemia, cerebrovascular disease, heart failure, and peripheral artery disease were more prevalent in hypertensives (n=3,775) than nonhypertensives (n=4,009). During hospitalization, hypertensive patients suffered from acute renal failure, shock, and cerebrovascular event more frequently than in nonhypertensives. During follow-up of one-year, the incidence of major adverse cardiac events was higher in hypertensives. In multi-variate adjustment, old age, Killip class ≥III, left ventricular ejection fraction <45%, systolic blood pressure <90 mmHg on admission, post procedural TIMI flow grade ≤2, female sex, and history of hypertension were independent predictors for in-hospital mortality. However antecedent hypertension was not significantly associated with one-year mortality. Hypertension at the time of acute myocardial infarction is associated with an increased rate of in-hospital mortality.

Keywords: Hypertension, Myocardial infarction, Mortality.

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