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Plasma Concentrations of Bupivacaine After Peri-articular Injection in Total Knee Arthroplasty

This study has been completed.
Information provided by (Responsible Party):
Saowaphak Lapmahapaisan, Mahidol University Identifier:
First received: July 5, 2012
Last updated: July 25, 2014
Last verified: July 2014
Patients with knee arthroplasty usually performed under spinal anesthesia with a single-shot femoral nerve block and periarticular block, so we would like to know the plasma concentration of bupivacaine in these patients.

Condition Intervention Phase
Serum Bupivacaine Level
Periarticular Block
Total Knee Arthroplasty
Drug: Bupivacaine
Phase 4

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Basic Science
Official Title: Plasma Concentrations of Bupivacaine After Spinal Anesthesia With Single Shot Femoral Nerve Block and Peri-articular Injection in Total Knee Arthroplasty

Resource links provided by NLM:

Further study details as provided by Saowaphak Lapmahapaisan, Mahidol University:

Primary Outcome Measures:
  • plasma concentration of bupivacaine after spinal anesthesia with single-shot femoral nerve block and periarticular block [ Time Frame: 2 hours ]

Secondary Outcome Measures:
  • bupivacaine toxicity [ Time Frame: 24 hr ]

Enrollment: 43
Study Start Date: July 2012
Study Completion Date: July 2014
Primary Completion Date: July 2014 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: bupicavaine Drug: Bupivacaine

20 ml of 0.5% bupivacaine for single-shot femoral nerve block will be done at the beginning then another 20 ml of 0.5% bupivacaine for periarticular block will be performed at the end of operation.

Blood sample will be drawn at 60 min after femoral nerve block and before periarticular block, 15, 30, 45, 60 min after periarticular block.


Ages Eligible for Study:   30 Years to 70 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • age of 30-70 yr
  • ASA I-II
  • patient undergo total knee arthroplasty under spinal block and single shot femoral nerve block and periarticular block

Exclusion Criteria:

  • patient's refusal
  • allergic to bupivacaine
  • body weight less than 50 kg
  • liver disease
  • heart disease
  • coagulopathy
  • Hct<35%
  • infection at both groin
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Please refer to this study by its identifier: NCT01636869

Faculty of Medicine, Siriraj Hospital, Mahidol University
Bangkok, Thailand, 10700
Sponsors and Collaborators
Mahidol University
  More Information

Responsible Party: Saowaphak Lapmahapaisan, instructor, Mahidol University Identifier: NCT01636869     History of Changes
Other Study ID Numbers: 010/2555
Study First Received: July 5, 2012
Last Updated: July 25, 2014

Keywords provided by Saowaphak Lapmahapaisan, Mahidol University:
bupivacaine level
periarticular block
total knee arthroplasty

Additional relevant MeSH terms:
Anesthetics, Local
Central Nervous System Depressants
Physiological Effects of Drugs
Sensory System Agents
Peripheral Nervous System Agents processed this record on May 25, 2017