Psychophysical measurements during lumbar discography: A heart rate response study

Milan P. Stojanovic, Jianguo Cheng, Thomas M. Larkin, Steven P. Cohen

Research output: Contribution to journalArticlepeer-review

Abstract

STUDY DESIGN: Prospective clinical data analysis. OBJECTIVE: To determine if heart rate (HR) response correlates with positive discography results. SUMMARY OF BACKGROUND DATA: Lumbar discography is a controversial tool for the diagnosis of discogenic low back pain. The subjective nature of discography can make data interpretation difficult, leading to false-positive and false-negative results. HR changes have been found in numerous studies to be a reliable and valid indicator of acute pain. To date, there is no study analyzing the HR response to discography-induced pain. METHODS: The HR measurements were recorded immediately preceding and after contrast injection into the each disc, and statistically correlated with the provocation of concordant pain, nonconcordant pain, and nonpainful discs. RESULTS: Discography was performed in 26 subjects with low back pain. Among 75 discograms, 26 discs elicited concordant pain, 9 provoked nonconcordant pain, and 40 elicited no pain response. There was no significant change in HR during disc stimulation for negative [no pain response (P=0.19) and nonconcordant (P=0.26)] discograms, whereas positive discograms [concordant pain (numerical rating scale 6/10)] were associated with a statistically significant increase in HR (P=0.000002). CONCLUSIONS: Lumbar discography induces positive HR response only in positive discograms. Although there is no immediate practical application of these results, 2 implications may deserve future research: (a) correlation of HR response with surgical and intradiscal electrotherapy treatment outcomes; (b) evaluation of HR measurement in cases of false-positive results (concordant pain on discography but no HR response).

Original languageEnglish (US)
Pages (from-to)387-391
Number of pages5
JournalJournal of Spinal Disorders and Techniques
Volume20
Issue number5
DOIs
StatePublished - Jul 1 2007

Keywords

  • Discography
  • Heart rate
  • Low back pain

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine
  • Clinical Neurology

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