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001-es BibID:BIBFORM078127
035-os BibID:(PMID)30729534
Első szerző:Balogh Eszter (neurológus)
Cím:Effect of reading with direct or indirect light on the visually evoked flow response in the posterior cerebral artery / Eszter Balogh, Tamás Árokszállási, László Csiba, László Oláh
Dátum:2019
ISSN:0091-2751
Megjegyzések:Purpose: Reading with direct light from computer monitors or tablets may cause visual fatigue and hamper reading comprehension. Our aim was to compare the blood flow response in the supplying artery of the visual cortex when reading from tablet screen or from paper. The neurovascular coupling was tested also after 15-minute reading from either monitor or paper. Methods: Flow velocity responses evoked by reading from paper and from monitor were measured by transcranial Doppler sonography in a random sequence in both posterior cerebral arteries (PCAs) of 20 young healthy adults. Afterward, PCA flow response evoked by reading from paper was also investigated after 15 minutes reading on the same tablet or paper, in a random order. Results: Reading from monitor with its own source of light and reading from paper with indirect light caused very similar PCA flow response. Moreover, the flow velocity increase, evoked by reading form paper did not differ after 15-minute reading from monitor or from paper. Conclusions: Reading with direct or indirect light produces similar flow response in the occipital cortex.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
neurovascular coupling
reading
transcranial Doppler ultrasonography
Megjelenés:Journal of Clinical Ultrasound. - 47 : 5 (2019), p. 272-277. -
További szerzők:Árokszállási Tamás (1988-) (neurológus) Csiba László (1952-) (neurológus, pszichiáter) Oláh László (1967-) (neurológus)
Pályázati támogatás:2017-1.2.1-NKP- 2017-00002
Egyéb
NAP_13-1-2013-0001
Egyéb
NKFH-K 120042
Egyéb
NKFH-K 109712
Egyéb
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Intézményi repozitóriumban (DEA) tárolt változat
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2.

001-es BibID:BIBFORM042394
Első szerző:Ficzere Andrea (neurológus)
Cím:Cerebrovascular reactivity in hypertensive patients : a transcranial doppler study / Ficzere Andrea, Valikovics Attila, Fülesdi Béla, Juhász Attila, Czuriga István, Csiba László
Dátum:1997
ISSN:0091-2751
Megjegyzések:We studied the usefulness of transcranial Doppler sonography for assessing changes in vasoreactivity in patients with hypertension and the hemodynamic consequences of hypertension. METHODS: The study group comprised 25 patients with chronic severe hypertension and 25 age- and sex-matched healthy subjects. Cerebrovascular reserve capacity was assessed by transcranial Doppler recording of the blood flow velocity in both middle cerebral arteries before and 5, 10, 15, and 20 minutes after intravenous injection of 1 g of acetazolamide (Diamox). Blood pressure, blood gases, and other blood parameters were also measured before and after acetazolamide injection. The sizes of the left atrium, left ventricle, and aortic root were measured by echocardiography and correlated with the vasoreactivity after acetazolamide injection. RESULTS: After acetazolamide injection, no significant changes in blood pressure were observed in either group. The mean blood flow velocity in the middle cerebral arteries of hypertensive patients (60.8 +/- 2.6 cm/sec) was not significantly different from that of controls (58.8 +/- 1.9 cm/sec) before acetazolamide injection. Ten minutes after acetazolamide injection, the percentage change in blood flow velocity was significantly lower in the hypertensive group (36.2 +/- 4.5%) than in the controls (52.6 +/- 3.7%). A significant negative correlation (p < 0.05) between decreased vasoreactivity and increased size of the left atrium and aortic root was observed. CONCLUSIONS: Vasoreactivity decreases in hypertensive patients without neurologic deficits or computed tomography abnormalities. Enlargement of the left atrium correlates well with the severity of the impairment in vasoreactivity. Transcranial Doppler sonography can be a sensitive tool in the investigation of vascular impairment caused by hypertension and in the follow-up of hypertensive patients.
Tárgyszavak:Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Journal Of Clinical Ultrasound. - 25 : 7 (1997), p. 383-389. -
További szerzők:Valikovics Attila Fülesdi Béla (1961-) (aneszteziológus) Juhász Attila (orvos) Czuriga István (1948-2018) (kardiológus) Csiba László (1952-) (neurológus, pszichiáter)
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Intézményi repozitóriumban (DEA) tárolt változat
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3.

001-es BibID:BIBFORM040228
Első szerző:Kerényi Levente
Cím:Role of hyperlipidemia in atherosclerotic plaque formation in the internal carotid artery / Kerenyi, L., Mihalka, L., Csiba, L., Bacso, H., Bereczki, D.
Dátum:2006
ISSN:0091-2751
Megjegyzések:The role of hyperlipidemia in atherosclerotic changes of the carotid artery is controversial. The aims of this retrospective study were to assess (1) the relationship between total serum cholesterol and triglyceride and the grade of internal carotid artery stenosis and (2) whether total serum cholesterol and triglyceride levels are independent risk factors for internal carotid artery atherosclerosis. METHODS: The files of 1,934 acute ischemic stroke patients were investigated retrospectively. The atherosclerotic involvement of the internal carotid artery was assessed via duplex sonography as percent of stenosis and was graded as follows: group 1, no plaque; group 2, <30% stenosis; group 3, 30-99% stenosis; and group 4, occlusion. RESULTS: The mean age of the patients was 66.9 +/- 12.8 years. Patients without any plaque had significantly lower cholesterol levels compared with those with any degree of internal carotid artery stenosis. Univariate analysis revealed that age (p < 0.001), sex (p < 0.001), hypertension (p < 0.05), cholesterol (p < 0.01), triglycerides(p < 0.05), and smoking (p < 0.001) were significant contributors to atherosclerosis. In the ordinal logistic regression model, age (p < 0.001), sex (p < 0.001), smoking(p < 0.001), and cholesterol (p < 0.05) remained independent predictors of internal carotid artery atherosclerosis. CONCLUSIONS: Total serum cholesterol level seems to be an independent risk factor of atherosclerosis in the carotid artery.
Tárgyszavak:Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Journal Of Clinical Ultrasound. - 34 : 6 (2006), p. 283-288. -
További szerzők:Mihálka László (1950-) (neurológus) Csiba László (1952-) (neurológus, pszichiáter) Bacsó Hajnalka Bereczki Dániel (1960-) (neurológus)
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Intézményi repozitóriumban (DEA) tárolt változat
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4.

001-es BibID:BIBFORM017470
Első szerző:Kerényi Levente
Cím:Cerebrovascular reserve capacity in patients with hyperlipidemia / Levente L. Kerenyi, Bela Fulesdi, Andrea Ficzere, Zoltan Kaposzta, Attila Valikovics, Gyorgy Paragh, Laszlo Csiba
Dátum:2000
Megjegyzések:Because recent data are conflicting, it is not certain whether hyperlipidemia is an independent risk factor for cerebrovascular diseases. Decreased cerebrovascular reserve capacity refers to the decreased ability of the cerebral arterioles to adapt in critical conditions and probably predicts a higher risk of stroke. The aim of this study was to compare cerebrovascular reserve capacity in hyperlipidemic patients and healthy controls using transcranial Doppler sonography. METHODS: Thirty-four hyperlipidemic patients and 21 healthy controls were examined. With transcranial Doppler sonography, the mean blood flow velocity in the middle cerebral artery was registered at rest and at 5, 10, 15, and 20 minutes after intravenous administration of 1,000 mg acetazolamide. Cerebrovascular reactivity and reserve capacity were calculated from mean blood flow velocities. Various laboratory measurements were also made and assessed for correlation with resting cerebral blood flow velocity and cerebrovascular reserve capacity. RESULTS: No significant differences could be observed between controls and hyperlipidemic patients in cerebrovascular reactivity or cerebrovascular reserve capacity. No correlation was found between various laboratory measurements and resting cerebral blood flow velocity or cerebrovascular reserve capacity. CONCLUSIONS: We could not demonstrate any differences in cerebrovascular reserve capacity between hyperlipidemic patients and healthy controls. Thus, the vasodilatory ability of the cerebral arterioles seems to remain unchanged in this patient group and is not correlated with the severity of hyperlipidemia.
Tárgyszavak:Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Journal of Clinical Ultrasound 28 : 3 (2000), p. 115-121. -
További szerzők:Fülesdi Béla (1961-) (aneszteziológus) Ficzere Andrea (1967-) (neurológus) Káposzta Zoltán Valikovics Attila Paragh György (1953-) (belgyógyász) Csiba László (1952-) (neurológus, pszichiáter)
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
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5.

001-es BibID:BIBFORM039510
Első szerző:Leányvári Zsolt (neurológus)
Cím:Computed tomographic and transcranial Doppler sonographic findings in acute and subacute phases of middle cerebral artery strokes / Leanyvari, Z., Vastagh, I., Fulesdi, B., Szirmai, I., Lengyel, A., Csiba, L., Bereczki, D.
Dátum:2002
ISSN:0091-2751
Megjegyzések:The aim of this study was to compare the sensitivities of visual and densitometric analyses of CT scans and transcranial Doppler sonograms (TCD) in detecting early changes in acute stroke. METHODS: CT and TCD were each performed twice in 12 patients; first in the acute phase (within 28 hours of stroke onset), then in the subacute phase (mean +/- standard deviation, 6 +/- 3 days after onset) of a stroke. Hypodensity on the CT scans was evaluated visually, and the optical density of both the stroke region and the corresponding region on the unaffected side was measured. Measurement of flow parameters in the middle cerebral artery was carried out with TCD before or shortly (within 4 hours) after CT scanning. RESULTS: In the acute phase, blood flow velocities were significantly lower on the affected side than they were on the unaffected side (means, 42 +/- 13 and 55 +/- 25 cm/second, respectively; p = 0.012). Marked asymmetry in flow velocity was found in 3 of the 4 patients who had normal CT scans in the acute phase. The asymmetry in flow velocity disappeared by the sixth day after the stroke. The resistance index did not correlate with the final infarct size. CONCLUSIONS: In some patients, the use of TCD in acute stroke may show alterations that reflect tissue damage that is undetectable on CT. Therefore, CT and TCD should be considered complementary diagnostic tools in the acute phase of stroke.
Tárgyszavak:Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Journal Of Clinical Ultrasound. - 30 : 1 (2002), p. 33-37. -
További szerzők:Vastagh Ildikó Fülesdi Béla (1961-) (aneszteziológus) Szirmai Imre Lengyel András (1970-) (neurológus) Csiba László (1952-) (neurológus, pszichiáter) Bereczki Dániel (1960-) (neurológus)
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Intézményi repozitóriumban (DEA) tárolt változat
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