SODIUM NITROPRUSSIDE AND THE CEREBRAL CIRCULATION
نویسندگان
چکیده
منابع مشابه
The cerebral response to sodium nitroprusside and trimethaphan controlled hypotension.
THE EFFECTS of altered arterial blood pressure on cerebral blood flow ( CBF ) have been well documented by Lassen 1'2 and Olesen 3 in man, and by Rapela, 4 Waltz ~ and Yashon 6 in dogs. The critical determinants of cerebral blood flow are the cerebral perfusion pressure (CPP) and the cerebrovascular resistance (CVR). The CPP is the difference between the driving force of the mean arterial press...
متن کاملThe central and peripheral circulation during and after sodium nitroprusside induced hypotension in the rat.
Central haemodynamics and regional blood flow were investigated during and after sodium nitroprusside (SNP) infusion in halothane anaesthetized rats. The administration of SNP 40 micrograms kg-1 min-1, decreased mean arterial pressure (MAP) to 52 (mean) mm Hg. Cardiac output (CO) remained unchanged, while heart rate (HR) and systemic vascular resistance (SVR) decreased. The regional blood flow ...
متن کاملSodium nitroprusside: theory and practice.
Sodium nitroprusside, by a peripheral vasodilator action, is a powerful hypotensive drug. In contrast to established agents, its hypotensive action is accompanied by an unchanged or augmented cardiac output. Intravenous administration of sodium nitroprusside rapidly produces a profound and controllable hypotension. Normotension is swiftly restored by ceasing to infuse the agent, and antidotes a...
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Except when used briefly or at low (< 2 mcg/kg/min) infus ion rates , sodium nitropruss ide gives rise to important quantities of cyanide ion, which can reach toxic, potentially lethal levels (see WARNINGS). The usual dose rate is 0.5 to 10 mcg/kg/min, but infus ion at the maximum dose rate should never las t more than 10 minutes . If blood pressure has not been adequately controlled after 10 m...
متن کاملDeliberately Lowering Blood Pressure with Sodium Nitroprusside
The goal of hyptensive anesthesia is the safe reduction of intraoperative blood loss, thus reducing transfusion risks. Previous hypotensive technics had a narrow margin of safety in that cardiac output was usually reduced in proportion to the degree of induced hypotension. This is in contrast to the results of our study, in which Sodium Nitroprusside was used as the sole hypotensive agent. Ni...
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ژورنال
عنوان ژورنال: British Journal of Anaesthesia
سال: 1977
ISSN: 0007-0912
DOI: 10.1093/bja/49.5.399