"Which standard blood flow monitor used in the operating room, and which standard replacement fluid is best during surgery?"
18 to 70 years old
This study will look at the responsiveness of three standard minimally invasive blood flow monitors used in the operating room, which include arterial pressure contour wave analysis, esophageal Doppler, and plethysmographic variability index (PVI) to three different standard replacement fluids that include: Lactated Ringer’s, hydroxyethyl starch (Voluven®) and 5% hypertonic saline during surgery.
This study requires
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Who can participate?
- Those surgical procedures where ANH is included in the surgical plan and consent is obtained
- Severe or symptomatic COPD, emphysema, renal, hepatic or coronary artery disease as defined by the American College of Cardiology (Cannon et al., 2001).
- Esophageal pathology (diverticulum, hiatal hernia, esophageal cancer, esophageal surgery), which introduces risks associated with the placement of the esophageal Doppler.