Evaluation of CNAP During Anesthesia

Evaluation of CNAP During Induction and Maintenance of General Anesthesia

The purpose of this study is to compare

• the non invasive measurement of arterial pressure (CNAP monitor)
• with the invasive measurement of arterial pressure (radial artery catheter) during induction and maintenance of general anesthesia

Inclusion Criteria:

• Age >18
• ASA II, III or IV
• weight between 40 and 180 kg; BMI < 35
• surgical procedure performed in supine position
• normal Allen's test and hand Doppler examination.

Exclusion Criteria:

• cardiac arrhythmias,
• history of vascular surgery or vascular implant in the upper limb