Perihematomal cerebral blood volume (CBV) was inversely associated with HG (B = -0.20; p < 0.001), independently from blood pressure, hematoma volume, and other confounders. This association was not dose dependent, and only very low CBV (<1.4 ml/100 g) was significantly associated with HG (B = 0.25; p < 0.001).

1999年4月1日 · In the present study, we aimed to correlate the abnormality in CBV with CBF in the vascular territory of the occluded artery in an early stage of ischemic stroke. The CBV abnormality was analyzed in relation to the magnitude of hypoperfusion and the development of collateral blood supply.

The relation between changes in CBF and cerebral blood volume (CBV) during hypercapnia and hypocapnia in humans, however, is not clear. Both CBF and CBV were measured at rest and during hypercapnia and hypocapnia in nine healthy subjects by positron emission tomography.

2003年8月1日 · CBV was determined as the product of global cerebral blood flow volume (CBF) and global cerebral circulation time. CBF was measured by duplex sonography and calculated as the sum of flow volumes...

Results —We observed CBF autoregulation for mean arterial blood pressure (MABP) between 50 and 140 mm Hg, at which average CBF was 1.27±0.44 mL · g −1 · min −1 (mean±SD). During autoregulation, total and microvascular CBV changes were small and not significantly different from CBF changes.

Purpose: International guidelines advocate intensive blood pressure (BP) lowering within 6 hours of acute intracerebral hemorrhage (ICH) to a target systolic BP of 130-140 mm Hg, though more intensive lowering may be associated with adverse outcome. Observational studies suggest impaired cerebral autoregulation (CA) following ICH.

2023年5月2日 · These methods are based on measuring the relationship between cerebral perfusion pressure and surrogates of CBF or cerebral blood volume (CBV) at low frequencies (<0.05 Hz) of autoregulation using time or frequency domain analyses.

The hypercapnia-induced increase in CBF is ~6% per mm Hg change in PaCO 2, and hypocapnia decreases CBF by ~3% per mm Hg change in PaCO 2. The relation between CBF and CBV (including arterial, capillary and venous blood volume) during changes in PaCO 2 has also been investigated in humans.

2019年3月12日 · Perihematomal cerebral blood volume (CBV) was inversely associated with HG (B = –0.20; p < 0.001), independently from blood pressure, hematoma volume, and other confounders. This association was not dose dependent, and only very low CBV (<1.4 ml/100 g) was significantly associated with HG (B = 0.25; p < 0.001).

2013年11月24日 · CO2 降低造成低碳酸血症，可以增加脑血管周围的 pH，而脑小阻力血管对脑脊液（ cerebrospinal fluid，CSF） 酸碱度变化很敏感， 因此脑血管收缩， 减少 CBF 和脑血容量（ cerebral blood volume，CBV） ，从而降低 ICP，此作用大约可以持续 30 min。