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Value of tissue Doppler myocardial velocities of tricuspid lateral annulus for the diagnosis of right heart failure in patients with COPD 总被引:4,自引:0,他引:4
Turhan S Dinçer I Ozdol C Rahimov U Kiliçkap M Altin T Tulunay C Akgun G Erol C 《Echocardiography (Mount Kisco, N.Y.)》2007,24(2):126-133
OBJECTIVE: Aim of this study was to investigate the value of systolic indices of tricuspid valve annular motion measured by tissue Doppler imaging for the diagnosis right ventricular failure in patients with chronic obstructive pulmonary disease (COPD). METHODS: Patients with COPD with right heart failure symptoms and/or right ventricular dilatation were enrolled for the study. The control group consisted of age and sex matched patients referred to the echocardiography laboratory who had normal echocardiographic examination. Tricuspid valve annulus peak systolic velocity and myocardial acceleration during isovolumic contraction were recorded by tissue Doppler imaging. RESULTS: IVA and Sa wave velocities were found to be significantly decreased in patients with right ventricular failure. For the prediction of right heart failure IVA <3.8 m/sec2 had 91% sensitivity, 80% specificity, 90% positive predictive value (PPV), and 82% negative predictive value (NPV) and Sa wave velocity <9.2 cm/sec had 80% sensitivity, 62% specificity, 75% PPV, and 68% NPV. CONCLUSION: Tricuspid valve annular velocities measured by tissue Doppler imaging especially IVA, offer potential diagnostic value for the diagnosis of right heart failure in patients with COPD. 相似文献
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Durukan AH Gundogan FC Erdem U Kilic S Sobaci G Bayraktar MZ 《Documenta ophthalmologica. Advances in ophthalmology》2006,112(1):23-29
Reports of tobacco-induced electrocortical activation and decrements in ocular blood flow in the acute faze indicated that
this effect is mediated via nicotin’s action or neuronal systems. In this study, pattern visual evoked potentials were investigated
in a group of male smokers (22 right eyes of 22 subjects) in separate real smoking and sham smoking sessions. On each session,
pattern visual evoked potentials were recorded before smoking, immediately after smoking, and five minutes after smoking.
Latency and amplitude values for P100 peaks were assessed and analyzed in each smoking condition for both real smoking and
sham smoking sessions. Real smoking significantly decreased P100 latency values (p value related to difference between pre-smoking
and immediately after smoking conditions is 0.009) and increased P100 amplitude values (p value related to difference between
pre-smoking and fifth minute after smoking is 0.039). Statistically no significant difference was observed in sham smoking
sessions. Our results are consistent with smoking-induced stimulant effects on pattern visual evoked potentials. 相似文献
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Uzeyir Gunenc Nilufer Kocak A. Taylan Ozturk Gul Arikan 《Indian journal of ophthalmology》2014,62(8):876-878
We describe a technique to manage late spontaneous intraocular lens (IOL) and capsular tension ring (CTR) dislocation within the intact capsular bag. The subluxated IOL and CTR complex can be positioned in a closed chamber and fixed to the pars plana at both 3 and 9 o’clock quadrants with the presented ab externo direct scleral suturation technique which provides an easy, safe and effective surgical option for such cases. 相似文献
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Erdem U Muftuoglu O Goktolga U Dagli S 《Journal of refractive surgery (Thorofare, N.J. : 1995)》2007,23(6):567-572
PURPOSE: To evaluate the effects of hormone replacement therapy (HRT) on refractive status, corneal topography, and aberrations of the eye in postmenopausal women. METHODS: Thirty-six healthy postmenopausal women (72 eyes) were included in the study. All patients received HRT that consisted of 0.625 mg/day conjugated estrogen and 5 mg/day medroxyprogesterone acetate in a continuous combined regimen. Schirmer II test and tear film break-up time (BUT) were performed on all patients at the time of enrollment and 6 months after initiation of HRT. Refractive status, corneal topography, and wavefront aberrations were evaluated with the NIDEK Optical Path Difference-Scan before and 6 months after HRT was initiated. RESULTS: Mean patient age was 50.8 +/- 2.6 years (range: 47 to 57 years). The mean duration of menopause was 2.7 +/- 0.8 years (range: 1.4 to 3.5 years). The Schirmer II test and tear film BUT measurements were significantly lower after HRT (P < .05). Before HRT, the mean spherical equivalent refraction was -0.19 +/- 1.79 diopters (D) (range: -4.38 to +3.00 D). After HRT, the mean spherical equivalent refraction was -0.22 +/- 1.81 D (range: -4.63 to +/- 2.63 D). No significant differences were noted between refractive status, corneal topography, and wavefront aberrations of eyes of patients before and 6 months after HRT (P > .05). CONCLUSIONS: Hormone replacement therapy in postmenopausal women does not significantly affect refractive status, corneal topography, and wavefront aberrations of the eye at 6-month follow-up. 相似文献
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Uzeyir Gunenc Ahmet Maden MD Suleyman Kaynak Tugrul Pirnar 《Documenta ophthalmologica. Advances in ophthalmology》1992,81(4):369-378
In this experimental study, various foreign bodies were inserted into fresh bovine eyes, in different localizations. Twenty-one magnetic and non-magnetic foreign bodies, dimensions of which varied from 1.5 × 1.5 × 2 mm to 3.5 × 6 × 7 mm, were tried to detect by computed tomography (CT) and magnetic resonance imaging (MRI) scanning. In addition, further dissections were applied to check the ocular damage attributable to movement of the foreign bodies. Ferromagnetic foreign bodies have been shown to move in the eye and the risk of torsional forces being applied to the ferromagnetic foreign body seemed to cause intraocular complications during MRI scanning. All of the foreign bodies that were implanted in bovine eyes were recognized on CT scanning, except intraocular lenses. As a general rule, metallic foreign bodies produced beamhardening artifacts, but these artifacts did not cause any problem in detecting the localizations of foreign bodies. 相似文献
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Laryngeal neurofibroma associated with neurofibromatosis type 2 总被引:1,自引:0,他引:1
Cihangiroglu M Yilmaz S Topsakal C Gok U Altinsoy B Cobanoglu B 《AJNR. American journal of neuroradiology》2002,23(10):1637-1639
We present a case of laryngeal neurofibroma associated with neurofibromatosis type 2. Although laryngeal neurofibromas have previously been reported in cases of neurofibromatosis type 1, their presence has never been described in a patient with neurofibromatosis type 2. 相似文献