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Czermak–Hering test

FieldValue
nameCzermak–Hering test
imageHering Test- MillaAndriana.svg
captionExample of massage location
purposetest for autonomic nervous function
DiseasesDB
ICD10
MedlinePlus
eMedicine
OPS301
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The Czermak–Hering test is a vagal maneuver consisting of the application of external digital pressure to the carotid sinus. The test is performed at the patient's bedside by imposing moderate pressure with the fingers, repeatedly massaging the left or the right carotid arteries.

Effects

The Czermak–Hering test is a test for autonomic nervous function (vasovagal response), exerting:

  • Bradycardia
  • Hypotension
  • Decrease of blood flow in the brachial artery
  • Alterations in the blood flow in the internal carotid artery.

Physiology

Johann Nepomuk Czermak stated that mechanical compression of the carotid artery due to the carotid sinus reflex initiates a stimulus of the heart inhibitory branches of the vagus nerve.

References

References

  1. (March 1964). "Apparatus and method for measurement of digital pressure applied to carotid sinus for causing carotid sinus syndrome". Acta Neurovegetativa.
  2. (1 February 1981). "Circulatory response in Aschner and Czermak-Hering tests, with special reference to cerebral circulation". Angiology.
Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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