Head position and cerebral blood flow velocity in acute ischemic stroke: a systematic review and meta-analysis.

@article{Olavarra2014HeadPA,
  title={Head position and cerebral blood flow velocity in acute ischemic stroke: a systematic review and meta-analysis.},
  author={Ver{\'o}nica V. Olavarr{\'i}a and Hisatomi Arima and Craig Anderson and Alejandro M. Brunser and Paula Mu{\~n}oz-Venturelli and Stephane Heritier and Pablo M. Lavados},
  journal={Cerebrovascular diseases},
  year={2014},
  volume={37 6},
  pages={401-8}
}
BACKGROUND Patients with acute ischemic stroke (AIS) have impaired vasomotor reactivity, especially in the affected cerebral hemisphere, such that they may depend directly on systemic blood pressure to maintain perfusion to vulnerable 'at risk' penumbral tissue. As the sitting up position may affect cerebral perfusion by decreasing cerebral blood flow (CBF) in salvageable tissue, positioning AIS patients with their head in a lying flat position could increase CBF through collateral circulation… CONTINUE READING