Influence of two types of self-retaining retractors on multifidus muscle blood flow during dorsolateral thoracolumbar hemilaminectomy in dogs

Rohner, Deborah; Forterre, Simone; Rohrbach, Helene; Bürki, Alexander; Gorgas, Daniela; Howard, J.; Forterre, Franck (2015). Influence of two types of self-retaining retractors on multifidus muscle blood flow during dorsolateral thoracolumbar hemilaminectomy in dogs. Veterinary and comparative orthopaedics and traumatology, 28(4), pp. 256-262. Schattauer 10.3415/VCOT-15-01-0008

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OBJECTIVES To assess the influence of the use of Gelpi and Grevel retractors on multifidus muscle blood flow during hemilaminectomy, using a dorsolateral approach, for acute disc extrusion in dogs as measured by laser speckle contrast imaging (LSCI). METHODS Blood flow in the multifidus muscles was measured intra-operatively using LSCI prior to insertion of the retractors, immediately after hemilaminectomy and removal of the retractors, and after 10 minutes of lavage of the surgical site. Plasma creatine kinase levels were measured preoperatively and 12-24 hours postoperatively. RESULTS Muscular blood flow was significantly decreased following retraction and remained lower than initial values 10 minutes after lavage in all dogs. The decrease in blood flow was significantly greater with Gelpi retractors (n = 8) than with Grevel retractors (n = 10). No significant relation was found between the duration of retraction and postoperative changes in creatine kinase levels or blood flow. CLINICAL SIGNIFICANCE Findings in this study demonstrate a drop in blood flow within the multifidus muscles using the dorsolateral approach regardless of retractor type used. Gelpi retractors seem to have greater influence on muscular blood flow than Grevel retractors. Further studies are warranted to confirm this second finding.

Item Type:

Journal Article (Original Article)

Division/Institute:

05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV) > DKV - Clinical Radiology
05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV)
05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV) > Small Animal Clinic
05 Veterinary Medicine > Research Foci > NeuroCenter
04 Faculty of Medicine > Pre-clinic Human Medicine > Institute for Surgical Technology & Biomechanics ISTB
05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV) > Small Animal Clinic > Small Animal Clinic, Surgery
05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV) > DKV - Central Clinical Laboratory
05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV) > DKV - Anaesthesiology

UniBE Contributor:

Rohner, Deborah; Forterre, Simone; Rohrbach, Helene; Bürki, Alexander; Schweizer, Daniela Esther; Howard, Judith and Forterre, Franck

Subjects:

600 Technology > 630 Agriculture
500 Science > 570 Life sciences; biology
600 Technology > 610 Medicine & health

ISSN:

0932-0814

Publisher:

Schattauer

Language:

English

Submitter:

Simone Forterre

Date Deposited:

08 Feb 2016 09:45

Last Modified:

26 Oct 2019 22:46

Publisher DOI:

10.3415/VCOT-15-01-0008

PubMed ID:

26058891

Uncontrolled Keywords:

dog, Blood flow, Self-retaining retractors, thoracolumbar disc extrusion, multifidus muscle

BORIS DOI:

10.7892/boris.75139

URI:

https://boris.unibe.ch/id/eprint/75139

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