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The Influence of a Bupivacaine Digital Nerve Block Using Rev G.

Information source: University of California, San Francisco
ClinicalTrials.gov processed this data on August 23, 2015
Link to the current ClinicalTrials.gov record.

Condition(s) targeted: Patients Undergoing Spine Surgery

Intervention: intermediate-acting digital nerve block (Other)

Phase: N/A

Status: Completed

Sponsored by: University of California, San Francisco

Official(s) and/or principal investigator(s):
Ronald D Miller, MD, MS, Principal Investigator, Affiliation: University of California, San Francisco


The investigators are proposing to continue investigation to improve the accuracy of the SpHb (continuous hemoglobin monitoring device) by administering an intermediate acting digital nerve block in the finger connected to the SpHb, specifically bupivacaine 0. 25% in patients undergoing spine surgery. Bupivacaine is FDA approved and in routine use.

Clinical Details

Official title: The Influence of a Bupivacaine Digital Nerve Block With the New Continuous Sensor (Rev G) on the Accuracy of SpHb Monitoring.

Study design: Allocation: Randomized, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Diagnostic

Primary outcome: SpHb (continuous hemoglobin monitor reading) minus tHb (clinical laboratory determined hemoglobin value).

Detailed description: Patients undergoing spine surgery will be randomized to receive (or not) the bupivacaine digital block on the finger attached to the new limited release version of the hemoglobin sensor, RevG. The SpHb reading will be compared to a blood hemoglobin level analyzed in the UCSF Clinical Laboratories.


Minimum age: 18 Years. Maximum age: 85 Years. Gender(s): Both.


Inclusion Criteria:

- Male or female 18 years of age or older

- American Society of Anesthesiologists classification 1, 2 or 3

- Scheduled to undergo spine or hip surgery

Exclusion Criteria:

- Pregnant or nursing

- Patients who in the study investigators clinical judgement would not be suitable

Locations and Contacts

University of California, San Francisco, San Francisco, California 94143, United States
Additional Information

Starting date: December 2012
Last updated: April 9, 2015

Page last updated: August 23, 2015

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