Device for rapid quantification of human carotid baroreceptor-cardiac reflex responses.
J Appl Physiol (1985)
; 60(2): 727-32, 1986 Feb.
Article
en En
| MEDLINE
| ID: mdl-3949673
ABSTRACT
We designed, constructed, and evaluated a new device to characterize the human carotid baroreceptor-cardiac reflex response relation rapidly. We designed this system for study of reflex responses of astronauts before, during, and after space travel. The system comprises a new tightly sealing silicone rubber neck chamber, a stepping motor-driven electro-deposited nickel bellows pressure system, capable of delivering sequential R-wave-triggered neck chamber pressure changes between +40 and -65 mmHg, and a microprocessor-based electronics system for control of pressure steps and analysis and display of responses. This new system provokes classic sigmoid baroreceptor-cardiac reflex responses with threshold, linear, and saturation ranges in most human volunteers during one held expiration.
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Banco de datos:
MEDLINE
Asunto principal:
Presorreceptores
/
Reflejo
/
Succión
/
Seno Carotídeo
/
Corazón
Tipo de estudio:
Diagnostic_studies
/
Evaluation_studies
Límite:
Humans
Idioma:
En
Año:
1986
Tipo del documento:
Article