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11/27/2016

CSM can increase your blood pressure

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Picture
A doctor measuring blood pressure (the manual way)
We have all heard about the importance of 'controlling your blood pressure.'  It is well known to be a risk factor for cardiovascular diseases such as heart attacks and strokes.  

Most commonly blood pressure increases due to 'hardening' or 'furring' of the arteries (medically known as Atherosclerosis).  This occurs to some degree with ageing, but is accelerated by lifestyle factors such as obesity, smoking and lack of exercise. We also know that blood pressure increases for other reasons, including stress or pain.  But what about CSM!?

A group from China [1] has been looking at hypertension (the medical word for high blood pressure) in CSM.  
This group followed up 135 patients with CSM, of which some patients underwent surgery and some did not.  They found that the blood pressure of patients undergoing surgery improved (lowered) after surgery, whereas those who did not, remained the same. 

You of course might say, well 'stress and pain' are a result of CSM, surely if they improve after surgery, my blood pressure will go down?  Well the group measured pain, and found that the improvement of blood pressure did not relate to pain, but instead severity of CSM...

This puts the cat amongst the pigeons.  Why should CSM cause high blood pressure?

That remains an unanswered question.  This study did not measure stress, additionally some limitations in the study, particularly the number of patients, may have hidden a relationship with pain.

​However there is some theory to the idea that CSM could affect your blood pressure.  Control of blood pressure is naturally dependent on many things.  Partly it relies on some very small nerve fibres called your 'Sympathetic Nervous System'.  Although this nervous system is separate to your spinal cord, there is some communication which could be potentially disrupted in CSM.  If we look at patients who have a traumatic spinal cord injury, their blood pressure is often unstable as a result.  So there could be something more to this than simply pain or stress!  We will have to watch this space!  But be prepared to reduce your blood pressure medication after surgery if that is applicable. 

References

1. Yang L et al. Cervical decompression surgery for cervical spondylotic myelopathy and concomitant hypertension: a multicenter prospective cohort study. Spine Oct 2016

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  • What is CSM?
    • The CSM Documentary
    • Diagnosing CSM
    • The Science of CSM >
      • Degeneration of the Spine
      • Dysfunction of the Spinal Cord
      • Disease Course
    • CSM Symptoms
    • Media
  • Living with CSM
    • Physiotherapy for CSM
    • Surgery for CSM >
      • Who benefits from surgery? >
        • Glossary >
          • Osteophyte
      • What to expect when you see a surgeon for CSM?
      • Types of operations
      • You have been scheduled for surgery? >
        • Before and after the operation
        • Post operative care
    • Patient Stories
    • Acute and Chronic Pain
    • Headaches
    • Dizzyness
  • Research
    • Assessment Scales
  • Support
    • Why join a support group
    • Disability Benefits / Advice UK
    • Disability Benefits / Advice USA
  • Blog
  • About
  • Myelopathy Student Society