title: Left ventricular longitudinal systolic dysfunction is associated with right atrial dyssynchrony in heart failure with preserved ejection fraction.
abstract: OBJECTIVE
  We aimed in this study to assess the role of longitudinal left ventricular (LV) systolic function in heart failure with preserved ejection fraction (HFpEF) in delayed intra- and interatrial conduction time.
  
  
  METHODS
  In 85 consecutive patients with HFpEF (age 60±11 years, ejection fraction [EF] ≥45%), a complete M-mode echocardiographic and tissue Doppler imaging (TDI) study was performed. The times from the onset of the P wave on the ECG to the beginning of the A' wave (PA) from the lateral and septal mitral and tricuspid annuli on TDI were recorded. The difference between these intervals gave the intra- and interatrial dyssynchrony. Based on mitral annular plane systolic excursion (MAPSE), patients were classified as having HFpEF with impaired (MAPSE ≤1.2 cm) or normal (MAPSE >1.2 cm) longitudinal systolic function.
  
  
  RESULTS
  Patients with impaired MAPSE were older (p<0.001), had higher LV mass index (p<0.001), greater left atrial (LA) minimum volume (p=0.007), reduced left atrial EF (p<0.001), higher E/e' ratio (p=0.002), reduced lateral and septal e' wave (p=0.005 and p=0.006, respectively), prolonged tricuspid PA' (p=0.03) and significantly increased right atrial (RA) dyssynchrony (p=0.001) compared with normal MAPSE. MAPSE correlated with RA dyssynchrony (r=-0.40, p<0.001) but not with interatrial and LA dyssynchrony.
  
  
  CONCLUSIONS
  In patients with HFpEF and impaired MAPSE, RA dyssynchrony is increased, compared to those with normal MAPSE. As patients with RA dyssynchrony are at higher risk for arrhythmia, assessment of this dyssynchrony may help to improve treatment, as well as to predict outcome in these patients.
authors.affiliation: Clinic of Cardiology, University Clinical Centre of Kosova, Prishtina, Kosovo. Electronic address: i.bytyci@hotmail.com.
authors.forename: Ibadete
authors.initials: I
authors.lastname: Bytyçi
authors.affiliation: Clinic of Cardiology, University Clinical Centre of Kosova, Prishtina, Kosovo.
authors.forename: Edmond
authors.initials: E
authors.lastname: Haliti
authors.affiliation: Clinic of Cardiology, University Clinical Centre of Kosova, Prishtina, Kosovo.
authors.forename: Gëzim
authors.initials: G
authors.lastname: Berisha
authors.affiliation: Clinic of Cardiology, University Clinical Centre of Kosova, Prishtina, Kosovo.
authors.forename: Arbërie
authors.initials: A
authors.lastname: Tishukaj
authors.affiliation: Clinic of Cardiology, University Clinical Centre of Kosova, Prishtina, Kosovo.
authors.forename: Faik
authors.initials: F
authors.lastname: Shatri
authors.affiliation: Clinic of Cardiology, University Clinical Centre of Kosova, Prishtina, Kosovo.
authors.forename: Gani
authors.initials: G
authors.lastname: Bajraktari
mesh_terms: D000368:Aged; D015150:Echocardiography, Doppler; D005260:Female; D006325:Heart Atria; D006333:Heart Failure / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013318:Stroke Volume; D018487:Ventricular Dysfunction, Left
keywords: Dessincronia auricular direita; Função sistólica longitudinal; Heart failure; Insuficiência cardíaca; Right atrial dyssynchrony; Systolic longitudinal function