Cognitive functioning and wellbeing in patients before and after carotid endarterectomy: Preliminary data

1998 ◽  
Author(s):  
N. Brand ◽  
G. G. M. van Ommen ◽  
F. L. L. Moll ◽  
R. G. A. Ackerstaff
Keyword(s):  
Cognitive Functioning ◽  
Carotid Endarterectomy ◽  
Preliminary Data ◽  
Before And After

Preoperative and postoperative cognitive functioning in patients with frontal meningiomas

2003 ◽  
Vol 98 (1) ◽  
pp. 21-31 ◽  
Author(s):  
Oliver Tucha ◽  
Christian Smely ◽  
Michael Preier ◽  
Georg Becker ◽  
Geraldine M. Paul ◽  
...  
Keyword(s):  
Executive Functions ◽  
Cognitive Functioning ◽  
Time Course ◽  
Lesion Size ◽  
Test Battery ◽  
Surgical Removal ◽  
Specific Information ◽  
Content Type ◽  
Before And After ◽  
Fine Print

Object. There is presently no specific information available concerning the nature and course of cognitive deficits caused by intracranial meningiomas. In this prospective study the authors examined the cognitive functioning of patients with frontal meningiomas. Methods. Fifty-four patients with frontal meningiomas were examined neuropsychologically before and after neurosurgery. The test battery consisted of standardized instruments including those assessing memory, attention, visuoconstructive abilities, and executive functions. The time period between pre-and postoperative assessment ranged from 4 to 9 months. The patients' performance was compared with the results in 54 healthy adults who were also assessed twice by using the same test battery in a period ranging from 4 to 9 months. In addition, the effect on cognition of meningioma lateralization, localization, lesion size, edema, brain compression, time course, and the occurrence of preoperative seizures was analyzed. Conclusions. Except in the case of working memory, comparisons of pre- and postoperative assessments of cognition revealed no differences in memory, visuoconstructive abilities, or executive functions, although a postoperative improvement in attentional functions was observed. The results of this study indicate that the surgical removal of frontal meningiomas does not impair patients' cognitive functioning. Furthermore, improvements in attentional functions may occur in these patients.

Cerebral Blood Flow before and After Carotid Endarterectomy

1972 ◽  
Vol 6 (1) ◽  
pp. 14-19 ◽  
Author(s):  
H.C. Engell ◽  
Gudrun Boysen ◽  
H.J. Ladegaard-Pedersen ◽  
H. Henriksen
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Carotid Endarterectomy ◽  
Before And After

Detection of Cerebral Microemboli by Means of Transcranial Doppler Monitoring Before and After Carotid Endarterectomy

Stroke ◽  
1995 ◽  
Vol 26 (2) ◽  
pp. 210-213 ◽  
Author(s):  
Erik V. van Zuilen ◽  
Frans L. Moll ◽  
Freddie E.E. Vermeulen ◽  
Henk W. Mauser ◽  
Jan van Gijn ◽  
...  
Keyword(s):  
Carotid Endarterectomy ◽  
Transcranial Doppler ◽  
Before And After

STUDIES ON HUMAN ADRENAL STEROIDS: 1. THE EFFECT OF CORTICOTROPIN ON COMPONENTS OF THE FREE AND CONJUGATED PLASMA C2l ADRENAL STEROID FRACTIONS

1956 ◽  
Vol 34 (2) ◽  
pp. 146-157 ◽  
Author(s):  
C. M. Southcott ◽  
S. K. Gandossi ◽  
A. D. Barker ◽  
H. E. Bandy ◽  
Hamish McIntosh ◽  
...  
Keyword(s):  
Individual Variation ◽  
Preliminary Data ◽  
Plasma Levels ◽  
Adrenal Steroids ◽  
Adrenal Steroid ◽  
Peripheral Plasma ◽  
Before And After ◽  
Normal Human ◽  
Considerable Individual Variation

The free and conjugated adrenal steroid fractions of peripheral plasma from12 normal human males were studied. Specimens were withdrawn before and after the administration of corticotropin. Hydrocortisone was identified chemically and some evidence was obtained for the presence of corticosterone. Hydrocortisone levels showed a marked but variable increase after corticotropin treatment. In some cases the administration of corticotropin resulted in the appearance of an unconjugated compound which may have been a tetrahydro derivative of cortisone or hydrocortisone. A method for studying the conjugated fraction was developed and preliminary data indicated that four components were present in some specimens after hydrolysis with β-glucuronidase. The level of these conjugates appeared to increase after treatment with corticotropin. In general, the response to a given dose of corticotropin showed considerable individual variation in the plasma levels of the components of both the free and conjugated corticosteroid fractions.

scholarly journals The effect of vitamin D on cognitive functions in young female patients: a prospective controlled study using the Montreal Cognitive Assessment

2019 ◽  
Vol 77 (1) ◽  
pp. 19-24
Author(s):  
Ozlem Balbaloglu ◽  
Nermin Tanık
Keyword(s):  
Vitamin D ◽  
Cognitive Functioning ◽  
Cognitive Assessment ◽  
Young Female ◽  
Montreal Cognitive Assessment ◽  
Controlled Study ◽  
Delayed Recall ◽  
Female Patients ◽  
Vitamin D Levels ◽  
Before And After

ABSTRACT Aim: Our aim was to determine whether there is a relationship between vitamin D [25(OH)D] and cognitive functioning in women with low 25(OH)D levels. Methods: Ninety female patients, 25-45 years of age, who attended our outpatient clinic and had 25(OH)D levels < 30 ng/mL, were included. The Montreal Cognitive Assessment (MoCA) scale was used to determine cognitive functioning; the scale is divided into seven subgroups. Patients were divided into three subgroups according to their 25(OH)D levels. After a three-month period of 25(OH) D replacement, the patients underwent a re-evaluation using the MoCA scale. Results: The total MoCA score before treatment was significantly different from the score after treatment (p < 0.05). Language and delayed recall functions were significantly different before and after treatment (p < 0.05). Conclusion: Vitamin D levels were related to cognitive functioning in our study group.

scholarly journals Impact of Carotid Endarterectomy on Choroidal Thickness and Volume in Enhanced Depth Optical Coherence Tomography Imaging

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Elżbieta Krytkowska ◽  
Monika Masiuk ◽  
Miłosz P. Kawa ◽  
Aleksandra Grabowicz ◽  
Paweł Rynio ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Carotid Endarterectomy ◽  
Choroidal Thickness ◽  
Vascular Tissue ◽  
Smoking Status ◽  
Internal Carotid Artery Stenosis ◽  
Enhanced Depth Imaging ◽  
Optical Coherence ◽  
Asymptomatic Patients ◽  
Before And After

Purpose. Carotid endarterectomy (CEA) is considered an effective therapeutic method for improving ocular circulation. The choroid is a predominantly vascular tissue; thus, systemic and local vascular alterations may influence its morphology and function. The aim of the current study was to analyse changes in choroidal thickness and volume in patients with significant internal carotid artery stenosis (ICAS) before and after unilateral CEA. Methods. The 42 eyes of the 21 asymptomatic patients included in the study were divided into two groups: those ipsilateral (EIE) and those contralateral (ECE) to CEA. All participants underwent a complete ophthalmologic examination, including enhanced depth imaging-optical coherence tomography (EDI-OCT). A comparative analysis of subfoveal thickness (CT) and choroidal volume (CV) measured in nine Early Treatment of Diabetic Retinopathy Study (ETDRS) subfields at baseline, on the 2nd day after CEA, and in the 3rd month after CEA was performed. Results. In the EIE and ECE groups, no significant differences in either CT or CV values before and on the 2nd day after the CEA were observed. In the EIE group, a significant increase in CT and CV in the 3rd month after CEA compared to baseline was noted in the specific ETDRS region. Changes in CT and CV after surgery were positively correlated with the participants’ physical activity status and diastolic blood pressure and negatively correlated with the participants’ age and smoking status. Additionally, the analysis of changes in CV after CEA showed a positive correlation between the EIE and ECE groups. Conclusions. CT and CV fluctuations in the central and perifoveal areas visualized with EDI-OCT enabled the observation of the processes of tissue adaptation to variable blood flow conditions.

Investigation of Sidewall Recombination in GaN Using a Quantum Well Probe

2000 ◽  
Vol 639 ◽  
Author(s):  
E. D. Haberer ◽  
M. Woods ◽  
A. Stonas ◽  
C-H. Chen ◽  
S. Keller ◽  
...  
Keyword(s):  
Quantum Well ◽  
Preliminary Data ◽  
Room Temperature ◽  
Spot Size ◽  
Excitation Source ◽  
Laser Spot Size ◽  
Room Temperature Photoluminescence ◽  
Size Dependent ◽  
Before And After ◽  
Pl Intensity

ABSTRACTIn this study, we use a quantum well (QW) probe structure to explore the size dependent effects of sidewall recombination in GaN. Mesas 0.8-7 μm in width with pitches of 4 μm, 8 μm, and 12 μm were etched into the QW probe structure, exposing the QW at the sidewalls. Several etch conditions were investigated. Room temperature photoluminescence (PL) measurements, using a He-Cd laser as an excitation source and laser spot size of approximately 230 μm, were taken before and after the mesas were etched. The effects of sidewall formation were quantified by comparing the maximum PL intensity of the QW before and after etch. Higher remaining PL intensity was observed for etch conditions which used both Ar ions and Cl2 gas instead of only Ar ions. The fraction of remaining PL decreased with decreasing mesa width, however the remaining PL intensity was relatively large even for small features. The preliminary data suggested that GaN is relatively insensitive to sidewall damage.

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