Czermak–Hering test
Purposetest for autonomic nervous function

The Czermak–Hering test is a vagal maneuver consisting of the application of external digital pressure to the carotid sinus.[1] 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:[2]

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.[3]

See also

References

  1. Takino, Masuichi; Takino, Yoshitada; Sugahara, Kunikazu (March 1964). "Apparatus and method for measurement of digital pressure applied to carotid sinus for causing carotid sinus syndrome". Acta Neurovegetativa. 26 (1): 93–103. doi:10.1007/BF01227300. PMID 14134393. S2CID 1780809.
  2. Miyazaki, M. (1 February 1981). "Circulatory response in Aschner and Czermak-Hering tests, with special reference to cerebral circulation". Angiology. 32 (2): 106–112. doi:10.1177/000331978103200202. PMID 7212384. S2CID 5637061.
  3. McCrory, P; Engel, RC; Zhang, YP (1 June 2006). Unterharnscheidt, Friedrich; Unterharnscheidt, Julia Taylor (eds.). "Boxing: medical aspects". British Journal of Sports Medicine. 40 (6): 561. doi:10.1136/bjsm.2005.025452. PMC 2465121.
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