Sahay K B, Mehrotra R, Sachdeva U, Banerji A K
Centre for Biomedical Engineering, Indian Institute of Technology, New Delhi.
Br J Neurosurg. 1991;5(4):379-86. doi: 10.3109/02688699109002865.
Complications of epidural pressure (EDP) monitoring are much less severe than those of ventricular fluid pressure (VFP) monitoring. Hence, an insight into the relationship between the epidural and the ventricular pressures is of clinical importance. The pressure volume response as obtained during infusion tests performed on dogs can be categorized into two phases: (i) the latent phase and (ii) the monotonic rise phase. During the latent phase the VFP first rises to a maximum and then falls to a minimum, but these changes in VFP are not reflected in EDP. The latent phase is followed by the monotonic rise phase during which both VFP and EDP rise simultaneously and monotonically. Although the changes in VFP and EDP are similar the epidural pressure remains consistently less than the ventricular fluid pressure. Hence, changes in VFP can be estimated by monitoring EDP during the monotonic rise phase but not during the latent phase.
硬膜外压力（EDP）监测的并发症比脑室液压力（VFP）监测的并发症严重程度要低得多。因此，深入了解硬膜外压力与脑室压力之间的关系具有临床重要性。在对狗进行的输液试验中获得的压力容积反应可分为两个阶段：（i）潜伏期和（ii）单调上升期。在潜伏期，VFP首先上升到最大值，然后下降到最小值，但VFP的这些变化并未反映在EDP中。潜伏期之后是单调上升期，在此期间VFP和EDP同时且单调上升。尽管VFP和EDP的变化相似，但硬膜外压力始终低于脑室液压力。因此，在单调上升期可通过监测EDP来估计VFP的变化，但在潜伏期则不行。
