title: Intraoperative contrast echocardiography with intravenous optison does not cause hemodynamic changes during cardiac surgery.
abstract: BACKGROUND
  The echocardiographic contrast agent Optison may be useful in patients undergoing cardiac surgery. This study investigates its effects on hemodynamics, cardiac performance, and oxygenation in this group of patients.
  
  
  METHODS
  Parameters of hemodynamic stability, cardiac performance, and oxygenation were measured in 57 patients by transesophageal echocardiography, electrocardiography, invasive arterial blood pressure and central venous pressure monitoring, capnography, pulsoximetry, and pulmonary artery catheter before and 5 and 10 minutes after an intravenous bolus of 0.3 mL of Optison.
  
  
  RESULTS
  No statistically significant differences in ST-segment changes, heart rate, arterial and central venous pressure, peripheral oxygen saturation, cardiac index, left ventricular ejection fraction, and regional wall motion were seen 5 and 10 minutes after injection of Optison compared with baseline parameters.
  
  
  CONCLUSIONS
  Optison did not cause clinically important changes in parameters of hemodynamic stability, cardiac performance, and oxygenation in our patients. The intraoperative use of intravenous Optison appears to be safe in patients undergoing cardiac surgery, including in the use of cardiopulmonary bypass.
authors.affiliation: Department of Anesthesiology, German Heart Institute, Berlin. erbk@dhzb.de
authors.forename: J M
authors.initials: JM
authors.lastname: Erb
authors.forename: J S
authors.initials: JS
authors.lastname: Shanewise
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000418:Albumins / Q000494:pharmacology*; D001794:Blood Pressure / Q000187:drug effects; D006348:Cardiac Surgical Procedures; D002315:Cardiopulmonary Bypass; D003287:Contrast Media / Q000494:pharmacology*; D005466:Fluorocarbons / Q000494:pharmacology*; D006321:Heart / Q000187:drug effects*; D006339:Heart Rate / Q000187:drug effects; D006439:Hemodynamics / Q000187:drug effects; D006801:Humans; D007432:Intraoperative Period; D008875:Middle Aged; D013318:Stroke Volume / Q000187:drug effects
chemical_list: D000418:Albumins; D003287:Contrast Media; C099458:FS 069; D005466:Fluorocarbons