Subject(s)
Brain/blood supply , Brain/physiology , Periodicity , Adolescent , Adult , Animals , Blood Flow Velocity , Electric Impedance , Humans , Intracranial Hypertension/diagnostic imaging , Intracranial Hypertension/physiopathology , Intracranial Hypertension/therapy , Middle Cerebral Artery , Osteopathic Medicine , Rats , Ultrasonography, Doppler, TranscranialSubject(s)
Periodicity , Skull/physiology , Adaptation, Physiological , Adolescent , Adult , Brain/blood supply , Contrast Media , Electric Impedance , Electrodes , Humans , Magnetic Resonance Imaging , Middle Aged , Movement/physiology , Plethysmography, Impedance/instrumentation , Plethysmography, Impedance/methods , Radiography , Reference Values , Skull/anatomy & histology , Skull/diagnostic imaging , Time Factors , Videotape Recording/instrumentation , Videotape Recording/methodsABSTRACT
Fractures of the shin are often accompanied by injuries of muscular and cutaneous branches of the tibial and fibular nerves. In patients with a similar trauma there appears a polyvalent complex of pathological reactions and functional disorders. An experience with treatment of patients with the above pathology allows a conclusion to be made that treatment of neurites should be started from the very first days of admittance of the patients to the hospital.
Subject(s)
Fractures, Closed/diagnosis , Peripheral Nerve Injuries , Tibial Fractures/diagnosis , Adolescent , Adult , Aged , Femoral Fractures/complications , Femoral Fractures/diagnosis , Fractures, Closed/complications , Humans , Middle Aged , Syndrome , Tibial Fractures/complicationsABSTRACT
In 15 chronically instrumented rabbits the local cerebral blood flow was measured in frontal, parietal and temporal cerebral cortex while high-molecular weight (protein) and low-molecular weight (peptide) fractions of cerebrospinal fluid (CSF) of epileptic and subarachnoidal hemorrhage patients was infused into their lateral brain ventricles. High molecular-weight fraction elicited pronounced and long-lasting vasoactive effects. This fraction taken from epileptic patients increased and from subarachnoidal hemorrhage patients decreased the local cerebral blood flow. The low-molecular weight fraction caused brief local cerebral flow changes in rabbits: an increase when taken from epileptic patients and decrease with epileptic patients' fraction.
Subject(s)
Cerebral Cortex/blood supply , Cerebrospinal Fluid/physiology , Cerebrovascular Circulation , Epilepsy/cerebrospinal fluid , Subarachnoid Hemorrhage/cerebrospinal fluid , Animals , Humans , Molecular Weight , Rabbits , Regional Blood FlowABSTRACT
Acute and chronic rabbit experiments (n = 35) have demonstrated the changes of the local cerebral bloodflow in the frontal, parietal, and temporal lobes of the brain of animals transfused (through cannules implanted into the lateral ventricles) 0.6 ml of the patients' liquor. Transfusion of the CSF from epileptics resulted in a drastic increase of the local cerebral bloodflow, whereas transfusions of the CSF from patients with cerebro-subarachnoidal hemorrhages lead to decrease of the bloodflow intensity. These changes were recorded in 5 min after the transfusion and persisted for 3 h, their degree correlating with the disease severity. The observed responses were more intensive than those to transfusions of artificial liquor or convalescent CSF.
Subject(s)
Cerebral Cortex/blood supply , Cerebrospinal Fluid , Epilepsy/cerebrospinal fluid , Subarachnoid Hemorrhage/cerebrospinal fluid , Animals , Blood Flow Velocity , Humans , Injections, Intraventricular , Rabbits , Regional Blood Flow , Vasoconstriction , VasodilationSubject(s)
Brain Stem/physiopathology , Intracranial Aneurysm/complications , Subarachnoid Hemorrhage/physiopathology , Basilar Artery , Carotid Artery Diseases/complications , Carotid Artery, Internal , Cerebral Arterial Diseases/complications , Circle of Willis , Electroencephalography , Galvanic Skin Response , HumansABSTRACT
In 50 patients with cerebrovascular pathology, the EEG and REG were simultaneously recorded during an increase in the cerebral blood volume in response to rhythmic photostimulation. General, local, and short-term reactions of increased cerebral blood volume could be distinguished. The relationship between the EEG changes and cerebral blood volume was most obvious during the short-term reactions: EEG-desynchronization was always followed by increased blood volume. This suggests a possible neurogenic element in vascular reactions. Cerebrovascular pathology was concluded to affect both the neurogenic and the metabolic components of the regulatory mechanism of local circulation.
