Czermak-Hering test

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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.


The Czermak–Hering test is a test for autonomic nervous function (vasovagal reflex), exerting:[2]


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[edit]


  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. PMID 14134393. doi:10.1007/BF01227300. 
  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. PMID 7212384. doi:10.1177/000331978103200202. 
  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): 561–561. PMC 2465121Freely accessible. doi:10.1136/bjsm.2005.025452.