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Hemodynamic responses to acute aortic coarctation in conscious sinoaortic denervated rats BJMBR
Fazan Jr.,R.; Machado,B.H.; Salgado,H.C..
The hemodynamic responses to acute (45 min) partial aortic constriction were studied in conscious intact (N = 7) or sinoaortic denervated (SAD) adult male Wistar rats (280-350 g, N = 7) implanted with carotid and femoral arterial catheters, a pneumatic cuff around the abdominal aorta and a pulsed Doppler flow probe to measure changes in aortic resistance. In addition, the hypertensive response and the reflex bradycardia elicited by total (N = 8) vs partial (N = 7) aortic constriction (monitored by maintenance of the pressure distal to the cuff at 50 mmHg) were compared in two other groups of intact rats. Intact rats presented a smaller hypertensive response (26 to 40% above basal level) to partial aortic constriction than SAD rats (38 to 58%). The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hypertension; Aortic coarctation; Doppler flowmetry; Aortic resistance; Reflex bradycardia; Sinoaortic denervation.
Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997001000018
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