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Prospective Evaluation of Interscalene Nerve Catheters vs. Single Injection Blocks

This study is ongoing, but not recruiting participants.
Information provided by (Responsible Party):
University of Wisconsin, Madison Identifier:
First received: June 28, 2011
Last updated: October 6, 2015
Last verified: October 2015
The primary hypothesis is that those patients who choose an interscalene catheter will have less pain postoperatively than those with single injection blocks. Secondary hypotheses examine physical therapy outcomes and incidence of parasthesia or pain following surgery for up to 3 months.

Condition Intervention
Pain Procedure: interscalene catheter Procedure: interscalene block

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Continuous Interscalene Block (CISB) Versus Single Injection Interscalene Block in Those Undergoing Shoulder Surgery in the Ambulatory Setting

Further study details as provided by University of Wisconsin, Madison:

Primary Outcome Measures:
  • pain on post-operative day 1 [ Time Frame: 24 hours ]
    Pain score on post-operative day 1(POD1) using numeric rating scale (NRS)

Secondary Outcome Measures:
  • Pain post operative day 2 (POD2) [ Time Frame: 48 hours ]
    NRS score on POD2

Enrollment: 73
Study Start Date: June 2011
Estimated Study Completion Date: December 2015
Primary Completion Date: July 2014 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: interscalene block
interscalene block
Procedure: interscalene block
interscalene block
Experimental: interscalene catheter
interscalene catheter
Procedure: interscalene catheter
interscalene catheter


Ages Eligible for Study:   18 Years to 79 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • American Society of Anesthesiologists (ASA) physical status 1-3
  • 18-79 years of age, inclusive
  • body mass index of < 36 kg/m2.
  • The ability to understand local anesthetic related complications and care of a CPNB
  • Presence of a caretaker with them during the first 24 hours of local anesthetic infusion, and on a daily basis.
  • The ability to communicate with the practitioner managing the catheter.
  • Residence within 2 hours of University of Wisconsin Hospital and Clinics

Exclusion Criteria:

  • Any contraindication to a continuous interscalene catheter placement
  • Clinically significant pulmonary disease
  • Clinically significant cardiac disease
  • Allergy to ropivacaine
  • Peripheral or central nervous system disease
  • Current (or planned) anticoagulation therapy or disease
  • Local infection over area of catheter placement
  • Renal or hepatic failure
  • History of opioid dependence
  • Significant psychiatric disease
  • Pregnancy or lactation (Subjects will be asked if it is possible they could be pregnant. If a subject responds in the affirmative, a pregnancy test will be done.)
  • Seizure Disorder
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01385449

United States, Wisconsin
U of Wisconsin
Madison, Wisconsin, United States, 53705
University of Wisconsin
Madison, Wisconsin, United States, 53705
Sponsors and Collaborators
University of Wisconsin, Madison
  More Information

Responsible Party: University of Wisconsin, Madison Identifier: NCT01385449     History of Changes
Other Study ID Numbers: H-2010-0098
Study First Received: June 28, 2011
Last Updated: October 6, 2015

Keywords provided by University of Wisconsin, Madison:
nerve block
shoulder surgery
physical therapy processed this record on September 25, 2017