NCT01002053

Brief Summary

The use of regional anesthesia for nerve block in diabetic patients with peripheral neuropathy is currently made on a case-by-case basis, also remains underlying uncertainty regarding the preferred technique and the likelihood of block-related nerve injury. For this many diabetic patients with otherwise healthy nerves may receive general anesthesia instead of regional anesthesia, thus giving up the benefits associated with the latter technique, including a decrease in health complications and superior analgesia following the operation. Ultrasound is used to identify the target nerve and guide needle insertion for nerve blocks, may be a useful tool to detect the presence and severity of neuropathy prior to block placement, a recent study demonstrated a statistically significant increase in the sonographic cross-sectional area of the posterior tibial nerve (PTN) in all diabetic patients who had abnormal motor transmission on nerve conduction studies. For regional anesthesiologists, the ultimate goal of detecting peripheral neuropathy and in particular, diabetic neuropathy by US is to avoid nerve injury. To do so, the association between US-detected diabetic neuropathy and block-related nerve damage must be first established, hence the purpose of this study. We aim to examine whether the cross-sectional area of PTN as assessed by preoperative US can predict nerve injury as assessed by worsening nerve conduction studies following PTN block inpatients scheduled to receive an ankle block. A further subgroup analysis will be performed in diabetic patients. We hypothesize that the cross sectional area of the PTN will correlate with motor conduction velocity on nerve conduction studies (NCS) following PTN block in patients with peripheral neuropathy. All eligible patients will undergo NCS to confirm or exclude distal neuropathy. Patients without neuropathy will be excluded from further participation in this study. Also excluded will be diabetic patients with neuropathy caused by genetic, metabolic and inflammatory diseases as well as toxic agents and drug induced. A systematic US examination of the PTN will be performed for all patients. After Block administration at surgery day the block successes will be assessed and for the purposes of the present study, patients in whom the block was not successful will be excluded from further intervention and data analyses. Eight weeks after surgery, all study patients will return to hospital for repeat NCS and US.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
40

participants targeted

Target at P25-P50 for all trials

Timeline
Completed

Started Feb 2012

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

October 26, 2009

Completed
1 day until next milestone

First Posted

Study publicly available on registry

October 27, 2009

Completed
2.3 years until next milestone

Study Start

First participant enrolled

February 1, 2012

Completed
1.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2013

Completed
2 months until next milestone

Study Completion

Last participant's last visit for all outcomes

February 1, 2014

Completed
Last Updated

November 24, 2017

Status Verified

November 1, 2011

Enrollment Period

1.8 years

First QC Date

October 26, 2009

Last Update Submit

November 21, 2017

Conditions

Keywords

diabetesneuropathyankle blockregional anesthesiaultrasoundnerve localizationNerve localization in patients undergoing foot surgery and having ankle block

Outcome Measures

Primary Outcomes (1)

  • Interval worsening of the severity of neuropathy

    8 weeks

Secondary Outcomes (1)

  • New functional neuropathy defined as any new sensory or motor deficit compared to preoperatively.

    8 weeks

Study Arms (1)

Diabetics with peripheral neuropathy

Patients with diabetes and peripheral neuropathy.

Procedure: Nerve conduction study and Ultrasound of the PTN

Interventions

Nerve Conduction studies and ultrasound of PTN will be performed to the patient before the operation and 8 weeks postoperatively.

Diabetics with peripheral neuropathy

Eligibility Criteria

Age18 Years - 80 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

Diabetic and non-diabetic patients undergoing foot surgery involving regional anesthesia/nerve blockade.

You may qualify if:

  • Patients undergoing PTN block for foot surgery
  • Type I diabetic patients (diagnosed more than 5 years), and II diabetic patients with demonstrated peripheral neuropathy
  • ASA I-III

You may not qualify if:

  • Non-diabetic neuropathy caused by genetic, metabolic and inflammatory diseases as well as toxic agents and drug induced (e.g. chemotherapy agents)
  • Psychiatric history
  • Allergy to local anesthetics

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Toronto Western Hospital, University Health Network

Toronto, Ontario, M5T 2S8, Canada

Location

Related Publications (24)

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    PMID: 4124532BACKGROUND
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    PMID: 17065901BACKGROUND
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    PMID: 18769245BACKGROUND
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    PMID: 1603343BACKGROUND
  • Kalichman MW, Calcutt NA. Local anesthetic-induced conduction block and nerve fiber injury in streptozotocin-diabetic rats. Anesthesiology. 1992 Nov;77(5):941-7. doi: 10.1097/00000542-199211000-00017.

    PMID: 1443749BACKGROUND
  • Hebl JR, Kopp SL, Schroeder DR, Horlocker TT. Neurologic complications after neuraxial anesthesia or analgesia in patients with preexisting peripheral sensorimotor neuropathy or diabetic polyneuropathy. Anesth Analg. 2006 Nov;103(5):1294-9. doi: 10.1213/01.ane.0000243384.75713.df.

    PMID: 17056972BACKGROUND
  • Kroin JS, Buvanendran A, Williams DK, Wagenaar B, Moric M, Tuman KJ, Kerns JM. Local anesthetic sciatic nerve block and nerve fiber damage in diabetic rats. Reg Anesth Pain Med. 2010 Jul-Aug;35(4):343-50. doi: 10.1097/aap.0b013e3181e82df0.

    PMID: 20607875BACKGROUND
  • Ballantyne JC, Carr DB, deFerranti S, Suarez T, Lau J, Chalmers TC, Angelillo IF, Mosteller F. The comparative effects of postoperative analgesic therapies on pulmonary outcome: cumulative meta-analyses of randomized, controlled trials. Anesth Analg. 1998 Mar;86(3):598-612. doi: 10.1097/00000539-199803000-00032.

    PMID: 9495424BACKGROUND
  • Urwin SC, Parker MJ, Griffiths R. General versus regional anaesthesia for hip fracture surgery: a meta-analysis of randomized trials. Br J Anaesth. 2000 Apr;84(4):450-5. doi: 10.1093/oxfordjournals.bja.a013468.

    PMID: 10823094BACKGROUND
  • Hadzic A, Arliss J, Kerimoglu B, Karaca PE, Yufa M, Claudio RE, Vloka JD, Rosenquist R, Santos AC, Thys DM. A comparison of infraclavicular nerve block versus general anesthesia for hand and wrist day-case surgeries. Anesthesiology. 2004 Jul;101(1):127-32. doi: 10.1097/00000542-200407000-00020.

    PMID: 15220781BACKGROUND
  • Chan VW, Peng PW, Kaszas Z, Middleton WJ, Muni R, Anastakis DG, Graham BA. A comparative study of general anesthesia, intravenous regional anesthesia, and axillary block for outpatient hand surgery: clinical outcome and cost analysis. Anesth Analg. 2001 Nov;93(5):1181-4. doi: 10.1097/00000539-200111000-00025.

    PMID: 11682392BACKGROUND
  • Alshami AM, Cairns CW, Wylie BK, Souvlis T, Coppieters MW. Reliability and size of the measurement error when determining the cross-sectional area of the tibial nerve at the tarsal tunnel with ultrasonography. Ultrasound Med Biol. 2009 Jul;35(7):1098-102. doi: 10.1016/j.ultrasmedbio.2009.01.011. Epub 2009 May 7.

    PMID: 19427097BACKGROUND
  • Cartwright MS, Passmore LV, Yoon JS, Brown ME, Caress JB, Walker FO. Cross-sectional area reference values for nerve ultrasonography. Muscle Nerve. 2008 May;37(5):566-71. doi: 10.1002/mus.21009.

    PMID: 18351581BACKGROUND
  • Lee D, Dauphinee DM. Morphological and functional changes in the diabetic peripheral nerve: using diagnostic ultrasound and neurosensory testing to select candidates for nerve decompression. J Am Podiatr Med Assoc. 2005 Sep-Oct;95(5):433-7. doi: 10.7547/0950433.

    PMID: 16166459BACKGROUND
  • Vijayan J, Therimadasamy AK, Teoh HL, Chan YC, Wilder-Smith EP. Sonography as an aid to neurophysiological studies in diagnosing tarsal tunnel syndrome. Am J Phys Med Rehabil. 2009 Jun;88(6):500-1. doi: 10.1097/PHM.0b013e3181a5b94b.

    PMID: 19454856BACKGROUND
  • Watanabe T, Ito H, Morita A, Uno Y, Nishimura T, Kawase H, Kato Y, Matsuoka T, Takeda J, Seishima M. Sonographic evaluation of the median nerve in diabetic patients: comparison with nerve conduction studies. J Ultrasound Med. 2009 Jun;28(6):727-34. doi: 10.7863/jum.2009.28.6.727.

    PMID: 19470812BACKGROUND
  • Watanabe T, Ito H, Sekine A, Katano Y, Nishimura T, Kato Y, Takeda J, Seishima M, Matsuoka T. Sonographic evaluation of the peripheral nerve in diabetic patients: the relationship between nerve conduction studies, echo intensity, and cross-sectional area. J Ultrasound Med. 2010 May;29(5):697-708. doi: 10.7863/jum.2010.29.5.697.

    PMID: 20427781BACKGROUND
  • Harati Y. Diabetic neuropathies: unanswered questions. Neurol Clin. 2007 Feb;25(1):303-17. doi: 10.1016/j.ncl.2007.01.002.

    PMID: 17324729BACKGROUND
  • Misur I, Zarkovic K, Barada A, Batelja L, Milicevic Z, Turk Z. Advanced glycation endproducts in peripheral nerve in type 2 diabetes with neuropathy. Acta Diabetol. 2004 Dec;41(4):158-66. doi: 10.1007/s00592-004-0160-0.

    PMID: 15660198BACKGROUND
  • Partanen J, Niskanen L, Lehtinen J, Mervaala E, Siitonen O, Uusitupa M. Natural history of peripheral neuropathy in patients with non-insulin-dependent diabetes mellitus. N Engl J Med. 1995 Jul 13;333(2):89-94. doi: 10.1056/NEJM199507133330203.

    PMID: 7777034BACKGROUND
  • Perkins BA, Bril V. Diabetic neuropathy: a review emphasizing diagnostic methods. Clin Neurophysiol. 2003 Jul;114(7):1167-75. doi: 10.1016/s1388-2457(03)00025-7.

    PMID: 12842711BACKGROUND
  • Vinik AI, Bril V, Litchy WJ, Price KL, Bastyr EJ 3rd; MBBQ Study Group. Sural sensory action potential identifies diabetic peripheral neuropathy responders to therapy. Muscle Nerve. 2005 Nov;32(5):619-25. doi: 10.1002/mus.20423.

    PMID: 16116628BACKGROUND
  • Olaleye D, Perkins BA, Bril V. Evaluation of three screening tests and a risk assessment model for diagnosing peripheral neuropathy in the diabetes clinic. Diabetes Res Clin Pract. 2001 Nov;54(2):115-28. doi: 10.1016/s0168-8227(01)00278-9.

    PMID: 11640995BACKGROUND
  • Yesildag A, Kutluhan S, Sengul N, Koyuncuoglu HR, Oyar O, Guler K, Gulsoy UK. The role of ultrasonographic measurements of the median nerve in the diagnosis of carpal tunnel syndrome. Clin Radiol. 2004 Oct;59(10):910-5. doi: 10.1016/j.crad.2004.03.020.

    PMID: 15451351BACKGROUND

MeSH Terms

Conditions

Diabetic NeuropathiesDiabetes Mellitus

Condition Hierarchy (Ancestors)

Peripheral Nervous System DiseasesNeuromuscular DiseasesNervous System DiseasesDiabetes ComplicationsEndocrine System DiseasesGlucose Metabolism DisordersMetabolic DiseasesNutritional and Metabolic Diseases

Study Officials

  • Sheila Riazi, MD, MSc, FRCPC

    University Health Network - University of Toronto

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
observational
Observational Model
OTHER
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

October 26, 2009

First Posted

October 27, 2009

Study Start

February 1, 2012

Primary Completion

December 1, 2013

Study Completion

February 1, 2014

Last Updated

November 24, 2017

Record last verified: 2011-11

Locations