Document Detail


Primary angioplasty of unprotected left main coronary artery for acute anterolateral myocardial infarction.
MedLine Citation:
PMID:  15550729     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: Mortality of acute unprotected left main coronary artery (LMCA) occlusion is very high. The objectives of this analysis were to determine the effect of primary angioplasty and the impact of cardiogenic shock on unprotected LMCA occlusion-induced acute anterolateral myocardial infarction (AAMI). METHODS: Of 1,736 consecutive patients with acute myocardial infarction (AMI), 38 (2.2%) had LMCA occlusion-induced AAMI with Thrombolysis in Myocardial Infarction (TIMI) flow less than or equal to 2. All were given primary angioplasty. RESULTS: Of these 38 patients, 17 (45%) were discharged, and 21 (55%) died in-hospital. Cardiogenic shock was overt in 28 patients; 47.1% of the survival group and 95.2% of the mortality group (p=0.0008). On arrival, the survival-group had higher pH (7.40+/-0.10 vs. 7.30+/-0.14; p=0.013) and base excess (-4.5+/-3.9 vs. -10.4+/-6.0 mEq/L; p=0.0013). In the survival group reperfusion was successful in 100% of patients, as opposed to 57.1% in the mortality group (p=0.0020), and the incident of stenting was not different between the two groups (64.7% vs. 71.4%, p=0.66). Shock patients had lower successful angioplasty rate (67.9% vs. 100%, p=0.040), higher in-hospital mortality (71.4% vs. 10.0%, p=0.0008), and higher 1-year mortality rates (p=0.0064), than stable patients. All shock patients with failed angioplasty died, but the mortality rate was 57.9% (p=0.021) when angioplasty was successful. CONCLUSIONS: Patients presenting with AAMI, LMCA occlusion, and cardiogenic shock have poor survival regardless of primary angioplasty in conjunction with coronary stents. Nevertheless, primary angioplasty is a feasible and effective procedure, and it may save lives in this clinical setting.
Authors:
Koyu Sakai; Yoshihisa Nakagawa; Takeshi Kimura; Kenji Ando; Hiroyoshi Yokoi; Masashi Iwabuchi; Katsumi Inoue; Hideyuki Nosaka; Masakiyo Nobuyoshi
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of invasive cardiology     Volume:  16     ISSN:  1042-3931     ISO Abbreviation:  J Invasive Cardiol     Publication Date:  2004 Nov 
Date Detail:
Created Date:  2004-11-19     Completed Date:  2005-01-24     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8917477     Medline TA:  J Invasive Cardiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  621-5     Citation Subset:  IM    
Affiliation:
Masakiyo Nobuyoshi, MD, Kokura Memorial Hospital, 1-1 Kifune-machi, Kokurakita-ku, Japan, 802-8555. kmhptca@nn.iij4u.or.jp.
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MeSH Terms
Descriptor/Qualifier:
Adult
Age Factors
Aged
Aged, 80 and over
Angioplasty, Transluminal, Percutaneous Coronary / methods,  mortality*
Case-Control Studies
Cause of Death*
Coronary Angiography / methods
Coronary Circulation
Coronary Stenosis / complications*,  radiography
Coronary Vessels / physiopathology
Female
Follow-Up Studies
Humans
Male
Middle Aged
Myocardial Infarction / etiology,  mortality*,  radiography,  therapy*
Probability
Reference Values
Retrospective Studies
Risk Assessment
Severity of Illness Index
Sex Factors
Shock, Cardiogenic / diagnosis,  mortality,  therapy
Survival Analysis
Treatment Outcome
Comments/Corrections
Comment In:
J Invasive Cardiol. 2004 Nov;16(11):626   [PMID:  15550730 ]

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