Echocardiographic Assessment of Volume Variation Secondary to Preoperative Fasting

Echocardiographic Assessment of Volume Variation Secondary to Preoperative Fasting

The primary objective of this study is to demonstrate that preoperative fasting does not increase the rate of lowered blood volume (defined by a variation of 15% ΔITV during a leg lift) in patients undergoing surgery.

Inclusion Criteria:

• The patient must have given his/her informed and signed consent
• The patient must be insured or beneficiary of a health insurance plan
• The patient is ASA (American Society of Anesthesiologists) class I, II or III
• The patient has not been fasting for more than 6 hours at the time of inclusion
• The patient is schelduled for a gynecological or visceral surgery

Exclusion Criteria:

• The patient is participating in another study
• The patient is in an exclusion period determined by a previous study
• The patient is under judicial protection, under tutorship or curatorship
• The patient refuses to sign the consent
• It is impossible to correctly inform the patient
• The patient is pregnant
• The patient is breastfeeding
• The patient is ASA class IV
• The patient has insulin dependent diabetes
• The patient has a cardiac or respiratory dysfunction
• The patient has a heart rhythm disorder
• The patient has renal insufficiency with dialysis
• The patient is being treated with diuretics
• The patient has had a bowel preparation
• Emergency surgery
• Outpatient surgery