title: Intravenous Optison (FS069) enhances pulmonary vein flow velocity signals: a multicenter study.
abstract: BACKGROUND
  Pulmonary vein spectral Doppler signals to characterize ventricular diastolic and systolic function, though often difficult to obtain, can be enhanced using contrast agents.
  
  
  OBJECTIVE
  The objective of this study was to determine the efficacy of the intravenous contrast agent Optison for enhancement of Doppler signals in patients with poor signals on two-dimensional echocardiographic examinations.
  
  
  METHODS
  Enhancement of pulmonary venous flow was evaluated in 191 patients at 0.2, 0.5, 3.0, and 5.0 ml per injection.
  
  
  RESULTS
  Greatest contrast enhancement for right and left pulmonary veins was observed at the highest doses. At 0.5 ml, conversion from inadequate to adequate was observed in right and left pulmonary veins in 48.0 and 79.3% of patients, respectively, while any degree of improvement was 54.4 and 65.8%, respectively. The adverse event rate (6.5%) was similar to a first-generation agent.
  
  
  CONCLUSIONS
  The results demonstrate that Optison is a safe and effective contrast agent for improving visualization of pulmonary Doppler signals, especially the left pulmonary vein.
authors.affiliation: Division of Cardiology, Washington Hospital Center, D.C. 20010, USA.
authors.forename: S
authors.initials: S
authors.lastname: Ellahham
authors.forename: E
authors.initials: E
authors.lastname: Hausnerova
authors.forename: J
authors.initials: J
authors.lastname: Gottdiener
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000418:Albumins; D001783:Blood Flow Velocity; D009202:Cardiomyopathies / Q000503:physiopathology; D002908:Chronic Disease; D003287:Contrast Media; D003971:Diastole; D015150:Echocardiography, Doppler; D005466:Fluorocarbons; D006801:Humans; D008171:Lung Diseases / Q000503:physiopathology; D008875:Middle Aged; D011667:Pulmonary Veins / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D013599:Systole
chemical_list: D000418:Albumins; D003287:Contrast Media; C099458:FS 069; D005466:Fluorocarbons