Analysis of Photoplethysmographic Signal in Lumbar Sympathetic Block (park001)

Study Description

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Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Brief Summary:

This study aims to compare the alternative current and the direct current signal changes of photoplethysmography between both feet during one side lumbar sympathetic block.

The hypothesis is that signal changes occur earlier than other indices to decide whether it is successful following lumbar sympathetic block on only one-side.

Condition or disease	Intervention/treatment	Phase
Complex Regional Pain Syndrome	Procedure: lumbar sympathetic block	Phase 3

Study Design

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Study Type :	Interventional (Clinical Trial)
Estimated Enrollment :	25 participants
Allocation:	Non-Randomized
Intervention Model:	Single Group Assignment
Masking:	Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose:	Diagnostic
Official Title:	An Analysis of Photoplethysmographic Signal in Diagnostic Lumbar Sympathetic Block for Complex Regional Pain Syndrome
Study Start Date :	September 2009
Estimated Primary Completion Date :	February 2010

Arms and Interventions

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Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Arm	Intervention/treatment
Active Comparator: lumbar sympathetic block; Unilateral lumbar sympathetic blockade using chirocaine	Procedure: lumbar sympathetic block; unilateral lumbar sympathetic block at L3 level using 0.2% chirocaine under C-arm fluoroscopy; Other Names: 0.25% bupivacaine (Chirocaine, Abbott, Elverum, Norway); C-arm (OEC 9800 plus, GE Medical Systems, Salt Lake City, UT); Chiba needle (Cook Inc., Bloomington, IN)
No Intervention: contralateral side

Outcome Measures

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Primary Outcome Measures :

1. Index of sympathetic block [ Time Frame: 1 minute at intervals from baseline through end of procedure ]

   change of slope of signals of the alternative current and the direct current from foot

   The baseline is defined as the point of surgical drap.

   The end of procedure is decided when the temperature of foot is increased more than 2 degrees from baseline within 20 minutes after local anesthetics injection

Secondary Outcome Measures :

1. skin temperature changes [ Time Frame: 1 minute at intervals during procedure ]
   foot temperature change from baseline
2. electrocardiogram [ Time Frame: 1 minute at intervals from baseline through end of procedure ]
   heart rate variability measurement

Eligibility Criteria

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Ages Eligible for Study:	19 Years to 70 Years (Adult, Senior)
Sexes Eligible for Study:	All
Accepts Healthy Volunteers:	No

Criteria

Inclusion Criteria:

• Physically examined for complex regional pain syndrome on lower extremity,
• Scheduled for diagnostic lumbar sympathetic blockade.

Exclusion Criteria:

• Graded as ASA 3 or higher,
• Below 18 or above 70 years of age, or
• Had any other contraindication for regional anesthesia.

Contacts and Locations

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Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Locations

Korea, Republic of
Department of Anesthesiology and Pain Medicine, Seoul National University Hospital	Recruiting
Seoul, Korea, Republic of, 110744
Contact: Soo Young Park, MD 82-2-2072-0881 soo02@snu.ac.kr

Sponsors and Collaborators

Seoul National University Hospital

More Information

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Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Responsible Party:	Clinical Research Institute, Seoul National University Hospital
ClinicalTrials.gov Identifier:	NCT01134289 History of Changes
Other Study ID Numbers:	Seoul National Univ Hospital; H-0906-010-282 ( Other Identifier: SeoulNUH )
First Posted:	May 31, 2010
Last Update Posted:	June 7, 2010
Last Verified:	June 2010

Keywords provided by Seoul National University Hospital:

complex regional pain syndrome; lumbar sympathetic blockade; photoplethysmography; diagnostic lumbar sympathetic blockade

Additional relevant MeSH terms:

Syndrome; Somatoform Disorders; Complex Regional Pain Syndromes; Reflex Sympathetic Dystrophy; Disease; Pathologic Processes; Mental Disorders; Autonomic Nervous System Diseases; Nervous System Diseases	Peripheral Nervous System Diseases; Neuromuscular Diseases; Levobupivacaine; Anesthetics, Local; Anesthetics; Central Nervous System Depressants; Physiological Effects of Drugs; Sensory System Agents; Peripheral Nervous System Agents