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

Cerebral blood flow changes in orthostatic dysregulation fainters

1982 ◽  
Vol 4 (1) ◽  
pp. 21-26 ◽  
Author(s):  
Hiroshi Shimizu ◽  
Kiyoomi Sumi ◽  
Takahiro Sugita ◽  
Jiro Abe ◽  
Yasuyuki Futagi ◽  
...  
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Orthostatic Dysregulation ◽  
Flow Changes

Tc-99m HMPAO/SPECT Determination of Regional Cerebral Blood Flow Changes in Schizophrenics

1990 ◽  
Vol 15 (12) ◽  
pp. 904-907 ◽  
Author(s):  
BELKIS ERBAS ◽  
HAKAN KUMBASAR ◽  
G??NAYDIN ERBENGI ◽  
COSKUN BEKDIK
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Regional Cerebral Blood Flow ◽  
Regional Cerebral Blood ◽  
Hmpao Spect ◽  
Flow Changes

Modeling Cerebral Blood Flow and Ventilation Instability due to CO2

2021 ◽  
Author(s):  
Stanley M. Yamashiro ◽  
Takahide Kato
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Current Model ◽  
Respiratory Control ◽  
Breath Hold ◽  
Chronic Obstructive ◽  
Brain Blood Flow ◽  
Linear Interaction ◽  
Non Linear ◽  
Flow Changes

A minimal model of cerebral blood flow and respiratory control was developed to describe hypocapnic and hypercapnic responses. Important non-linear properties such as cerebral blood flow changes with arterial partial pressure of carbon dioxide (PaCO2) and associated time dependent circulatory time delays were included. It was also necessary to vary cerebral metabolic rate as a function of PaCO2. The cerebral blood flow model was added to a previously developed respiratory control model to simulate central and peripheral controller dynamics for humans. Model validation was based on previously collected data. The variable time delay due to brain blood flow changes in hypercapnia was an important determinant of predicted instability due to non-linear interaction in addition to linear loop gain considerations. Peripheral chemoreceptor gains above a critical level, but within normal limits, was necessary to produce instability. Instability was observed in recovery from hypercapnia and hypocapnia. The 20 sec breath-hold test appears to be a simple test of brain blood flow mediated instability in hypercapnia. Brain blood flow was predicted to play an important role with non-linear properties. There is an important interaction predicted by the current model between central and peripheral control mechanisms related to instability in hypercapnia recovery. Post hyperventilation breathing pattern can also reveal instability tied to brain blood flow. Previous data collected in patients with chronic obstructive lung disease was closely fitted with the current model and instability predicted. Brain vascular volume was proposed as a potential cause of instability despite cerebral autoregulation promoting constant brain flow.

Propranolol prevents cerebral blood flow changes and pain-related behaviors in migraine model mice

2019 ◽  
Vol 508 (2) ◽  
pp. 445-450 ◽  
Author(s):  
Yuki Kurauchi ◽  
Makito Haruta ◽  
Risako Tanaka ◽  
Kiyotaka Sasagawa ◽  
Jun Ohta ◽  
...  
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Flow Changes
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