Cerebrospinal fluid pulse pressure and intracranial volume-pressure relationships.
AUTOR(ES)
Avezaat, C J
RESUMO
In six anaesthetised and ventilated dogs the CSF pulse pressure was compared with the volume-pressure response (VPR) during continuous inflation of an extradural balloon. Both pulse pressure and VPR increased linearly with the ventricular fluid pressure (VFP) up to a mean VFP of 60 mmHg. At this pressure a breakpoint occurred above which the CSF pulse pressure showed a steeper linear increase, while the VPR remained constant. It is suggested that the breakpoint is related to failure of autoregulation, and that in non-autoregulating patients the CSF pulse pressure is a better parameter of the clinical state than the VPR.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=490301Documentos Relacionados
- Effects of hypercapnia and arterial hypotension and hypertension on cerebrospinal fluid pulse pressure and intracranial volume-pressure relationships.
- Intracranial volume–pressure relationships during experimental brain compression in primates: 1. Pressure responses to changes in ventricular volume
- Intracranial volume–pressure relationships during experimental brain compression in primates: 3. Effect of mannitol and hyperventilation
- Intracranial volume–pressure relationships during experimental brain compression in primates: 2. Effect of induced changes in systemic arterial pressure and cerebral blood flow
- Post-mortem studies of the semistatic volume-pressure characteristics of infants' lungs.
