The limitation of pulsatile flow through the aqueduct of sylvius as a cause of hydrocephalus

White, D. N.; Wilson, K.C.; Curry, G. R.; Stevenson, R. Jan

doi:10.1016/0022-510x(79)90150-3

Cited by 49 publications

(26 citation statements)

References 74 publications

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“…The limitation of net CSF flow as well as pulsatile CSF flow through the aqueduct, as a cause of hydrocephalus, 61 can effectively be treated using endoscopic aqueductoplasty.…”

Section: Discussionmentioning

confidence: 99%

Analysis of aqueductal cerebrospinal fluid flow after endoscopic aqueductoplasty by using cine phase-contrast magnetic resonance imaging

Schroeder¹,

Schweim²,

Schweim³

et al. 2000

FOC

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Object The purpose of this prospective study was to evaluate aqueductal cerebrospinal fluid (CSF) flow after endoscopic aqueductoplasty. In all patients, preoperative magnetic resonance (MR) imaging revealed hydrocephalus caused by aqueductal stenosis and lack of aqueductal CSF flow. Methods In 14 healthy volunteers and in eight patients with aqueductal stenosis who had undergone endoscopic aqueductoplasty, aqueductal CSF flow was investigated using cine cardiac-gated phase-contrast MR imaging. For qualitative evaluation of CSF flow, the authors used an in-plane phase-contrast sequence in the midsagittal plane. The MR images were displayed in a closed-loop cine format. Quantitative through-plane measurements were performed in the axial plane perpendicular to the aqueduct. Evaluation revealed no significant difference in aqueductal CSF flow between healthy volunteers and patients with regard to temporal parameters, CSF peak and mean velocities, mean flow, and stroke volume. All restored aqueducts have remained patent 7 to 31 months after surgery. Conclusions Aqueductal CSF flow after endoscopic aqueductoplasty is similar to aqueductal CSF flow in healthy volunteers. The data indicate that endoscopic aqueductoplasty seems to restore physiological aqueductal CSF flow.

show abstract

“…The limitation of net CSF flow as well as pulsatile CSF flow through the aqueduct, as a cause of hydrocephalus, 61 can effectively be treated using endoscopic aqueductoplasty.…”

Section: Discussionmentioning

confidence: 99%

Analysis of aqueductal cerebrospinal fluid flow after endoscopic aqueductoplasty by using cine phase-contrast magnetic resonance imaging

Schroeder¹,

Schweim²,

Schweim³

et al. 2000

FOC

View full text Add to dashboard Cite

show abstract

“…It is a rigid container filled with fluids and an elastic organ perfused by a pulse pump. The dynamics are constrained by the windkessel effect; although the arterial flow into the cranium is strongly pulsatile, the capillary flow a few centimeters distal is almost pulseless [25]. The presence of strong arterial pulsations in the CSF and venous blood [21] suggests that the arterial pulsations are diverted through the CSF to the veins [17,21,28].…”

Section: Resultsmentioning

confidence: 99%

“…It is generally accepted that arterial pulsations entering the cranium are buffered by the CSF, venous blood and the elastic contents of the cranium and the spine [17,21,25,28]. Pulsations entering the cranium have two alternative fluid pathways: the capillary blood or the CSF pathways.…”

Section: Resultsmentioning

confidence: 99%

“…The presence of strong arterial pulsations in the CSF and venous blood [21] suggests that the arterial pulsations are diverted through the CSF to the veins [17,21,28]. Effective dissipation of this pulsatile kinetic energy is probably necessary for normal cerebral perfusion [17,25].…”

Section: Resultsmentioning

confidence: 99%

“…The pulsatile component of the arterial blood flow is attenuated by dissipation to the surrounding fluids and tissues, so the capillary flow is essentially smooth [25,26]. This effect of pulsatile arterial inflow giving rise to nearly pulseless capillary flow is called the windkessel effect.…”

Section: Csf Pulsationsmentioning

confidence: 99%

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