Index to Chiropractic Literature
Index to Chiropractic Literature
My ICL     Sign In
Wednesday, February 26, 2020
Index to Chiropractic LiteratureIndex to Chiropractic LiteratureIndex to Chiropractic Literature

ICL Home

For best results switch to Advanced Search.
Article Detail
Return to Search Results
ID 488
  Title Effect of premanipulative tests on vertebral artery and internal carotid artery blood flow: A pilot study
Journal J Manipulative Physiol Ther. 1999 Jul-Aug;22(6):368-375
Peer Review Yes
Publication Type Article
BACKGROUND: Neck manipulation occasionally causes stroke after trauma to the vertebral or internal carotid artery. Premanipulativ e tests involving cervical spine rotation or extension have been recommended to detect patients at risk of neurovascular ischemia. However, the effect of these procedures on extracranial blood flow is not well established, and their validity is thus controversial.
OBJECTIVE: To determine the effect of premanipulative tests involving cervical spine rotation or extension on vertebral artery and internal carotid artery blood flow parameters.
DESIGN: Two-group experimental study.
SUBJECTS: Twenty subjects consisting of 16 patients treated with physiotherapy and four volunteers.
METHODS: Subjects were tested with a recommended premanipulative protocol by both an independent physiotherapist and an investigator. One group consisted of 10 subjects with signs or symptoms indicative of neurovascular ischemia on premanipulative testing, with 10 subjects with no signs or symptoms indicative of neurovascular ischemia on premanipulative testing comprising the second group. Hemodynamic measurements for both vertebral and both internal carotid arteries were taken by use of duplex Doppler ultrasonography with color-flow imaging with the subjects in the following positions: neutral, end-range extension, 45 degrees contralateral rotation, end-range contralateral rotation, and combined end-range contralateral rotation/extension.
RESULTS: The reliability of premanipulative testing was supported. Significant changes in flow velocity of the vertebral artery (and to a lesser extent of the internal carotid artery) were shown in end-range positions involving rotation and extension. No meaningful significant differences were found between the two groups.
CONCLUSIONS: Screening procedures that use rotation and extension may be useful tests of the adequacy of collateral circulation. A larger study is needed to determine whether subjects testing positive significantly differ from those testing negative.
This abstract is reproduced with the permission of the publisher. Full text is available by subscription. Click on the above link and choose a publisher from PubMed's LinkOut feature.



   Text (Citation) Tagged (Export) Excel
Email To
HTML Text     Excel

To use this feature you must register a personal account in My ICL. Registration is free! In My ICL you can save your ICL searches in My Searches, and you can save search results in My Collections. Be sure to use the Held Citations feature to collect citations from an entire search session. Read more search tips.

Sign Into Existing My ICL Account    |    Register A New My ICL Account
Search Tips
  • Enclose phrases in "quotation marks".  Examples: "low back pain", "evidence-based"
  • Retrieve all forms of a word with an asterisk*, also called a wildcard or truncation.  Example: chiropract* retrieves chiropractic, chiropractor, chiropractors
  • Register an account in My ICL to save search histories (My Searches) and collections of records (My Collections)
Advanced Search Tips