Comparison of ultrasonographic inferior vena cava collapsibility index, caval aorta index and perfusion index for prediction of post spinal anaesthesia hypotension in lower limb surgeries.
Trial Snapshot
- Phase
- Not Applicable
- Status
- Not yet recruiting
- Sponsor
- Enrollment
- 66
- Locations
- 1
- Primary Endpoint
- To compare the predictive values of ultrasonographic inferior vena cava collapsibility index, caval aorta index & perfusion index as predictors for post spinal anaesthesia hypotension.
Study Overview
Brief Summary
Sonographicdetermination of inferior vena cava collapsibility index (IVCCI) and IVC toaorta diameter index (IVC : Ao index) was introduced into clinical practice forassessment of intravascular volume in many studies and reported to be reliable,non-invasive and easy techniques for evaluating volume status, and can beobtained by practitioners with little experience in echocardiography. Perfusionindex (PI) is a novel vital parameter that estimates the pulsatility of bloodin the extremities, which depends upon the amount of red and infrared lightabsorption measured by a pulse oximeter. Perfusion index compares the pulsatileblood flow to non-pulsatile blood flow in the peripheral vessels. Perfusionindex is reciprocally related to the vascular tone. A lower PI denotes a higherperipheral vascular tone. Therefore, increased incidence of reduction in bloodpressure (BP) following SAB reflects the higher baseline PI.
Study Design
- Study Type
- Observational
Eligibility Criteria
- Ages
- 18.00 Year(s) to 65.00 Year(s) (—)
- Sex
- All
Inclusion Criteria
- •Patients more than 18-65 years of age with American Society of Anesthesiologists’ (ASA) physical status 1 or 2 who will be schedule for elective surgery under spinal anaesthesia in the supine position.
Exclusion Criteria
- •BMI more than 30 kg/m2, 2) taking angiotensin converting enzyme inhibitors, 3) pregnant women, 4) emergency cases, 5) absolute or relative contraindications to spinal anaesthesia, 6) patients scheduled for unilateral spinal anaesthesia 7) failure to perform spinal anaesthesia.
- •patients with a baseline arterial SBP less than 90mmHg or mean arterial blood pressure (MBP) less than 70mmHg.
Outcomes
Primary Outcomes
To compare the predictive values of ultrasonographic inferior vena cava collapsibility index, caval aorta index & perfusion index as predictors for post spinal anaesthesia hypotension.
Time Frame: BASE LINE, EVERY 2 MIN TILL 30 MINUTES
Secondary Outcomes
- To compare the hemodynamic parameters blood pressure mean arterial pressure heart rate(post spinal anaesthesia patient is observed for a period of 30 min & non invasive blood pressure mean arterial blood presure and heart rate are taken every 2 min from giving spinal anaesthesia to 30 min post spinal anaesthesia.)