title: Noninvasive prediction of complications with anteroseptal acute myocardial infarction by left ventricular Tei index.
abstract: BACKGROUND
  Tei index has been proposed as a noninvasive and simple index that enables the evaluation of global left ventricular (LV) function and prediction of patient prognosis. However, its use to predict complications with acute myocardial infarction (AMI) is not fully investigated. Therefore, the purpose of this study was to investigate whether or not LV Tei index allows noninvasive prediction of complications with AMI.
  
  
  METHODS
  In all, 80 consecutive patients with anteroseptal AMI were enrolled. LV Tei index was measured at the time of admission as (a - b)/ b , where a is the interval between cessation and onset of mitral filling flow and interval b is the aortic flow ejection time. Subsequent complications including cardiac death, shock, congestive heart failure, ventricular tachycardia/fibrillation, paroxysmal atrial fibrillation/flutter, advanced atrioventricular block requiring pacing, pericardial effusion, and LV aneurysm during the 30 days after the onset of AMI were prospectively evaluated and compared with the initial Tei index at admission.
  
  
  RESULTS
  Complications developed in 31 of 80 (39%) patients with AMI. The Tei index was significantly increased for patients with complications compared with those without them (0.69 +/- 0.16 vs 0.50 +/- 0.11, P < .0001). When Tei index > or = 0.59 was used for the criteria, the sensitivity, specificity, and overall accuracy to predict subsequent complications were 77%, 86%, and 85%, respectively.
  
  
  CONCLUSIONS
  In patients with anteroseptal AMI, LV Tei index at arrival to the hospital in the acute phase allows noninvasive prediction of subsequent complications.
authors.affiliation: Department of Cardiovascular, Repiratory and Metabolic Medicine, Graduate School of Medicine, Kagoshima University, Kagoshima City 890-8520, Japan.
authors.forename: Toshinori
authors.initials: T
authors.lastname: Yuasa
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Otsuji
authors.forename: Eiji
authors.initials: E
authors.lastname: Kuwahara
authors.forename: Kunitsugu
authors.initials: K
authors.lastname: Takasaki
authors.forename: Shiro
authors.initials: S
authors.lastname: Yoshifuku
authors.forename: Keiko
authors.initials: K
authors.lastname: Yuge
authors.forename: Akira
authors.initials: A
authors.lastname: Kisanuki
authors.forename: Kouichi
authors.initials: K
authors.lastname: Toyonaga
authors.forename: Souki
authors.initials: S
authors.lastname: Lee
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Toda
authors.forename: Toshiro
authors.initials: T
authors.lastname: Kumanohoso
authors.forename: Shuichi
authors.initials: S
authors.lastname: Hamasaki
authors.forename: Tatsuru
authors.initials: T
authors.lastname: Matsuoka
authors.forename: Sadatoshi
authors.initials: S
authors.lastname: Biro
authors.forename: Shinichi
authors.initials: S
authors.lastname: Minagoe
authors.forename: Chuwa
authors.initials: C
authors.lastname: Tei
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015150:Echocardiography, Doppler; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D009203:Myocardial Infarction / Q000150:complications* / Q000000981:diagnostic imaging* / Q000503:physiopathology; D011237:Predictive Value of Tests; D013318:Stroke Volume; D016277:Ventricular Function, Left