RSNA and HR responses to hypotension with an intravenous injection of SNP in conscious and anesthetized rats.

<p>RSNA (A) and HR (B) responses to the decrease in blood pressure (−20, −40 and −60 mmHg) induced by the SNP injections in the conscious rats (black bar, n = 5) and the rats anesthetized with pentobarbital sodium (white bar, n = 6), urethane (vertical-striped bar, n = 6) or ketamine-xylazine (black bar with white diamond, n = 6). Values are expressed as the mean <u>+</u>SEM. N.D.; data were not obtained because SAP did not decrease by 60 mmHg in conscious rats. #P<0.05 vs. the conscious rats.