scholarly journals Prediction of symptomatic vasospasm after subarachnoid hemorrhage by rapidly increasing transcranial Doppler velocity and cerebral blood flow changes.

Stroke ◽  
1992 ◽  
Vol 23 (5) ◽  
pp. 674-679 ◽  
Author(s):  
D G Grosset ◽  
J Straiton ◽  
M du Trevou ◽  
R Bullock
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Subarachnoid Hemorrhage ◽  
Transcranial Doppler ◽  
Doppler Velocity ◽  
Symptomatic Vasospasm ◽  
Flow Changes

scholarly journals Cardiac function and cerebral blood flow changes of patients with symptomatic vasospasm in induced hypertension

Nosotchu ◽  
1984 ◽  
Vol 6 (2) ◽  
pp. 223-229 ◽  
Author(s):  
Tomoaki Terada ◽  
Haruhiko Kikuchi ◽  
Jun Karasawa ◽  
Ikuo Ihara ◽  
Izumi Nagata
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Cardiac Function ◽  
Symptomatic Vasospasm ◽  
Induced Hypertension ◽  
Flow Changes

scholarly journals Assessment of cerebral blood flow changes in nonconvulsive status epilepticus in comatose patients: A pathophysiological transcranial Doppler study

Seizure ◽  
2014 ◽  
Vol 23 (4) ◽  
pp. 284-289 ◽  
Author(s):  
Sybille Merceron ◽  
Thomas Geeraerts ◽  
Claire Montlahuc ◽  
Jean-Pierre Bedos ◽  
Matthieu Resche-Rigon ◽  
...  
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Status Epilepticus ◽  
Transcranial Doppler ◽  
Nonconvulsive Status Epilepticus ◽  
Doppler Study ◽  
Flow Changes

scholarly journals Changes of cerebral blood flow after aneurysmal subarachnoid hemorrhage. Effect of neurological grade, symptomatic vasospasm, and aging.

Nosotchu ◽  
1990 ◽  
Vol 12 (3) ◽  
pp. 207-213
Author(s):  
Masayuki Matsuda ◽  
Takuya Nakazawa ◽  
Akira Saito ◽  
Satoshi Nakasu ◽  
Jyoji Handa
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Subarachnoid Hemorrhage ◽  
Aneurysmal Subarachnoid Hemorrhage ◽  
Symptomatic Vasospasm

scholarly journals Chronic cerebral blood flow changes following experimental subarachnoid hemorrhage in rats.

Stroke ◽  
1990 ◽  
Vol 21 (4) ◽  
pp. 577-581 ◽  
Author(s):  
A Kader ◽  
W E Krauss ◽  
S T Onesti ◽  
J P Elliott ◽  
R A Solomon
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Subarachnoid Hemorrhage ◽  
Experimental Subarachnoid Hemorrhage ◽  
Flow Changes

scholarly journals Concentrations of estradiol, progesterone and testosterone in sefrum and cerebrospinal fluid of patients with aneurysmal subarachnoid hemorrhage correlate weakly with transcranial Doppler flow velocities

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Jan Martin ◽  
Eva Plank ◽  
Bernhard Ulm ◽  
Jens Gempt ◽  
Maria Wostrack ◽  
...  
Keyword(s):  
Blood Flow ◽  
Cerebrospinal Fluid ◽  
Cerebral Blood Flow ◽  
Subarachnoid Hemorrhage ◽  
Cerebral Vasospasm ◽  
Transcranial Doppler ◽  
Aneurysmal Subarachnoid Hemorrhage ◽  
Cerebral Arteries ◽  
Blood Flow Velocities ◽  
Flow Velocities

Abstract Background The implication of the steroids estradiol, progesterone and testosterone in cerebral vasospasm after aneurysmal subarachnoid hemorrhage (aSAH) has not been comprehensively assessed. In rodents, studies suggested beneficial effects of steroids on cerebral vasospasm after experimental SAH. Studies in humans are warranted, however, a general dilemma of human studies on neuroactive substances is that the brain is not directly accessible and that concentrations in the periphery may not adequately parallel concentrations in the central compartments. In the present study, concentrations of estradiol, progesterone and testosterone in serum and cerebrospinal fluid (CSF) of patients with aSAH were determined. Blood flow velocities in cerebral arteries were measured by transcranial Doppler sonography (TCD). The aim of this study was to evaluate the correlations between the cerebral blood flow velocities and levels of estradiol, progesterone and testosterone in CSF and serum. Results Samples of serum and CSF of 42 patients with aSAH were collected concomitantly daily or every other day via the arterial line and the external ventricular drainage for two weeks after the hemorrhage. Blood flow velocities in the cerebral arteries were determined by TCD. Total estradiol, progesterone and testosterone concentrations were measured by electro-chemiluminescence immunoassay. The strength of correlation was assessed by Spearman’s rank correlation coefficient. The correlation analysis revealed very weak correlations between cerebral blood flow velocities and concentrations of estradiol, progesterone and testosterone levels in both compartments with correlation coefficients below 0.2. Conclusions In humans with aSAH, merely very weak correlations between flow velocities in cerebral arteries and concentrations of estradiol, progesterone and testosterone in serum and CSF were demonstrated. These results suggest a limited influence of the respective steroids on cerebral vascular tone although vasodilatory effects were described in rodent studies. Thus, the implication of steroids in processes of neurological deterioration warrants further clarification.

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