Assessment Of Carotid Flow During General Anesthesia

Assessment of Fluid Responsiveness With Carotid Flow Change During General Anaesthesia

Proper identification of patients who would benefit from fluid infusion (fluid responsiveness) is one of the most crucial challenges in anaesthesia and critical care. Reliability of several invasive measurements used for this purpose for many years have been questioned recently. The study will evaluate consistency between carotid artery flow derivatives and standard haemodynamic measurement (LIDCO rapid) in navigation of intraoperative fluid therapy.

Inclusion Criteria:

• Major abdominal surgery
• Artery catheter required

Exclusion Criteria:

• Laparoscopic surgery
• Known history of carotid endarterectomy
• Known history of carotid stenosis
• Non-sinus rhythm
• Systolic or diastolic heart failure
• Chronic kidney disease
• Pulmonary hypertension
• Carotid artery anomaly
• Unable to visualise carotid artery
• Angle of correction > 60