Comparison of Carotid Peak Systolic Velocity Variation With Aortic Peak Systolic Velocity Variation in Pediatric Non-Cardiac Surgery

Comparison of Carotid Peak Systolic Velocity Variation With Aortic Peak Systolic Velocity Variation in Pediatric Non-Cardiac Surgery

The purpose of this study is to evaluate whether carotid Doppler peak systolic velocity can be an easy to measure possible surrogate for echocardiographic measurement of aortic peak systolic velocity variation which is an index of fluid responsiveness in mechanically ventilated children intra-operatively.

Inclusion Criteria:

• Patients scheduled for mon-cardiac surgeries under general endotracheal anaesthesia in supine position with expected duration more than 1 hour

Exclusion Criteria:

• Known congenital heart disease
• Any non-sinus rhythm, arrhythmias
• Patients on vasoactive medications
• Chest wall deformities, situs non solitus (eg. dextrocardia)
• Patients scheduled for open chest surgeries
• History of neck surgery/ carotid interventions