The Bezold-Jarisch Reflex
1996; Lippincott Williams & Wilkins; Volume: 83; Issue: 1 Linguagem: Inglês
10.1097/00000539-199607000-00060
ISSN1526-7598
Autores Tópico(s)Cardiovascular Syncope and Autonomic Disorders
ResumoTo the Editor: In a recent article, D'Alessio et al. [1] describe the Bezold-Jarisch reflex to be initiated by venous blood pooling and a heightened cardiac contractile state, which causes arterial vasodilatation (by activation of the parasympathetic nervous system) and a vagally mediated bradycardia. They are describing a mechanoreflex. The reflex as reported by Von Bezold and Hirt [2] and later confirmed by Jarisch and Richter [3] is that of profound bradycardia, hypotension, and apnea in response to intravenous injections of veratrum alkaloids. Radiopaque iodine, as used in coronary angiographic studies, is also known to initiate this reflex. This is a chemoreflex. Can the authors explain this discrepancy? Geoffrey N. Morris, MBBS, FRCA Department of Anesthesia University of Virginia Medical Center Charlottesville, VA 22901
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