Non-invasive Perioperative Hb Monitoring in Spinal Surgery

• Status: Completed
• Trial end date: 2018-01-01
• Target enrollment: 0
• Participant gender: All

Summary

The decision to transfuse or not to transfuse blood products is one of the main issues in patients undergoing surgery.

The standard laboratory method of hemoglobin assessment is time-consuming, gives intermittent data, and requires venipuncture which is invasive and painful. In the past decade, the use of non-invasive and faster methods, which allow physicians to measure hemoglobin levels at the patient's bedside, have become widespread. One of the tools that make this possible is Spectrophotometric Hemoglobin.

However, one of the main concerns regarding this method is its accuracy. Since the accuracy of this assessment depends on the extent of perfusion of the organ on which the probe is placed, use of digital nerve blocks proposed to increase its accuracy.

This study aims to evaluate the effects of digital nerve block (with bupivacaine) on the accuracy of non-invasive hemoglobin monitoring by spectrophotometry in patients undergoing spinal surgery.

• Phase: Phase 4
• Accepts Healthy Volunteers?: No

Details

• Lead Sponsor: Tehran University of Medical Sciences
• Collaborator: Sina Trauma and Surgery Research Center
• Treatments: Bupivacaine

Criteria

Inclusion Criteria: All patients 18 years of age or older, admitted to Sina hospital to have spinal surgery, whose surgery is not an emergency, are included in the study. Moreover, the patients must be in grade 2 or lower according to the ASA Physical Status Classification, and volunteer to participate in the study.

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Exclusion Criteria: Patients who are going to have an emergency surgery are excluded from the study. Also patients with grade 3 ASA or higher, or the ones suffering from anatomic or vascular disorders that cause problems in attaching the SpHb sensor, are excluded from the study.

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