36 research outputs found
Haemodynamic Changes in Patients with Whiplash Injury Measured by Transcranial Doppler Sonography (TCD)
The daily increasing number of cervical whiplash injuries presents ever-greater requirement for vertebrobasilar diagnostics. A cervical spine injury, which is quite frequent injury, may occur during a fall, or industrial, traffic, sport or war injury. Transcranial Doppler (TCD) sonography with Transcan 3-D EME device and 2 MHz probe was used for the assessment of vertebrobasilar circulation in patients with a whiplash injury of the cervical spine, that occurred mostly in car accident. This study includes 47 patients with clinically verified cervical spine trauma with x-ray evidence of no bone lesion. The patients were examined by TCD within a month, and then six months following the accident. The obtained values were compared to normal blood flow velocities and correlated with the severity of clinical picture. During the first month after the injury, statistically significant disturbances in the vertebrobasilar circulation were recorded, such as the increase in mean blood flow velocities in AVL (68%), AVR (62%) and BA (51%) (mostly as spasam). Six months later, normal findings were obtained in about 50% of the vessels, whereas in rest of the patients vasospasam persisted in one, two or all examined blood vessels. TCD of the vertebrobasilar circulation was found to be a very useful method in the diagnostics and followāup of patients with a whiplash injury
Haemodynamic Changes in Patients with Whiplash Injury Measured by Transcranial Doppler Sonography (TCD)
The daily increasing number of cervical whiplash injuries presents ever-greater requirement for vertebrobasilar diagnostics. A cervical spine injury, which is quite frequent injury, may occur during a fall, or industrial, traffic, sport or war injury. Transcranial Doppler (TCD) sonography with Transcan 3-D EME device and 2 MHz probe was used for the assessment of vertebrobasilar circulation in patients with a whiplash injury of the cervical spine, that occurred mostly in car accident. This study includes 47 patients with clinically verified cervical spine trauma with x-ray evidence of no bone lesion. The patients were examined by TCD within a month, and then six months following the accident. The obtained values were compared to normal blood flow velocities and correlated with the severity of clinical picture. During the first month after the injury, statistically significant disturbances in the vertebrobasilar circulation were recorded, such as the increase in mean blood flow velocities in AVL (68%), AVR (62%) and BA (51%) (mostly as spasam). Six months later, normal findings were obtained in about 50% of the vessels, whereas in rest of the patients vasospasam persisted in one, two or all examined blood vessels. TCD of the vertebrobasilar circulation was found to be a very useful method in the diagnostics and followāup of patients with a whiplash injury
Transcranial Doppler in Smoking Relapse Prevention Strategy
Nicotine dependence is a progressive, chronic, relapsing disorder. Nicotine is the
principal and most potent psychopharmacologically active component of tobacco smoke.
Through activation of nicotine receptors in the central nervous system, nicotine can lead
to tolerance and dependence. Cessation of smoking is followed by severe pathophysiologic
withdrawal and by long-term craving. TCD measurement of cerebral blood flow
velocity (BFV) and nicotine dependence degree measured by Fragestrom questionnaire
was analyzed in relation to smoking relapse. This study includes 47 participants (25 females
and 22 males) included in Breathe Free Plan To Stop Smoking in Non Smoking
School in Zagreb.12 month following the end of treatment participants were divided in
three groups: continued abstinence, interrupted abstinence and non abstinence. High
nicotine dependence combined with TCD pathological finding significantly discriminated
successes and failures, suggesting that smokers with pathological TCD need specific
therapeutic approach with more social support, individualized coping skills and
cognitive restructuring. Measuring cerebral flow velocity by transcranial Doppler in
smokers showed the practical validity in prediction of smoking relaps
The structure of the space of affine Kaehler curvature tensors as a complex module
We use results of Matzeu and Nikcevic to decompose the space of affine
Kaehler curvature tensors as a direct sum of irreducible modules in the complex
settin
Geometric realizations of generalized algebraic curvature operators
We study the 8 natural GL equivariant geometric realization questions for the
space of generalized algebraic curvature tensors. All but one of them is
solvable; a non-zero projectively flat Ricci antisymmetric generalized
algebraic curvature is not geometrically realizable by a projectively flat
Ricci antisymmetric torsion free connection
Non-Walker Self-Dual Neutral Einstein Four-Manifolds of Petrov Type III
The local structure of the manifolds named in the title is described.
Although curvature homogeneous, they are not, in general, locally homogeneous.
Not all of them are Ricci-flat, which answers an existence question about type
III Jordan-Osserman metrics, raised by Diaz-Ramos, Garcia-Rio and
Vazquez-Lorenzo (2006).Comment: 47 pages; a reference and a grant number were adde
Application of Reduced Graph Model to the Enumeration of Kekule Structures and Conjugated Circuits of Benzenoid Hydrocarbons
The reduced graph model which represents an alternative way
of depicting hexagonal networks is reviewed. This model is exploited
in several enumeration problems of benzenoid systems. It is
used as a basis for Ā»pencil and paperĀ« algorithms for counting
Kekule structures, conjugated circuits and cata-condensed isomers
of benzenoid hydrocarbons