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The relationship between blood pressure and pain
Marcella Saccò1, Michele Meschi, Giuseppe Regolisti
1Palliative Care Unit, Local Health Authority, via dei Benefattori 12, Parma, Italy.
Journal of Clinical Hypertension (Greenwich, Conn.)
|July 30, 2013
Summary
Acute pain initially aids tissue protection by activating the sympathetic nervous system and neuroendocrine responses. However, elevated blood pressure paradoxically reduces pain sensitivity, a pattern reversed in chronic pain conditions.
Area of Science:
- Physiology
- Neuroscience
- Cardiovascular Medicine
Background:
- The interplay between pain perception and hypertension is not well understood, despite its clinical significance.
- Acute pain responses involve sympathetic nervous system and neuroendocrine system activation, influencing cardiovascular parameters.
- Chronic pain exhibits a reversed relationship between blood pressure and pain sensitivity compared to acute pain.
Purpose of the Study:
- To review the pathophysiological relationship between pain and hypertension.
- To explore the functional interactions between cardiovascular and pain regulatory systems.
- To discuss the clinical implications of these interactions.
Main Methods:
- Review of observational data, experimental models, and human studies.
- Analysis of the role of nociception, spinal reflexes, and the hypothalamic-pituitary-adrenal axis.
- Examination of cardiovascular changes associated with acute and chronic pain.
Main Results:
- Acute pain initially triggers adaptive cardiovascular and neuroendocrine responses.
- Elevated resting blood pressure is associated with reduced sensitivity to acute pain.
- Chronic pain demonstrates an inverse relationship between blood pressure and pain sensitivity.
- Evidence supports the connection between pain states and cardiovascular alterations.
Conclusions:
- The relationship between pain and hypertension is complex and differs significantly between acute and chronic pain states.
- Understanding these interactions has potential clinical implications for managing pain and cardiovascular conditions.
- Further research is warranted to elucidate the precise mechanisms involved.
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