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排序方式: 共有512条查询结果,搜索用时 93 毫秒
1.
Sybille Spicker Jörg B. Schulz Dirk Petersen Michael Fetter Thomas Klockgether Johannes Dichgans 《Journal of neurology》1995,242(8):517-521
Eye movements were studied in 13 patients with Friedreich's ataxia and correlated with MRI findings to investigate whether oculomotor abnormalities can be traced to cerebellar disturbances in this disease. One of the most prominent eye signs was fixation instability (square-wave jerks, SWJ.). Besides SWJ the patients showed various combinations of cerebellar, vestibular and brain-stem oculomotor signs. Our patients did not comprise a homogeneous group with regard to their oculomotor findings. There was no correlation between the severity of any of the so-called cerebellar oculomotor disturbances and the number of SWJ. We tried to correlate the extent of oculomotor disturbances with floccular atrophy and atrophy of the dorsal vermis on MRI in seven of the patients. None of the oculomotor features (including SWJ) correlated with flocculus or dorsal vermis size. Furthermore, floccular and vermal measurements on MRI were normal. Accordingly, we think it unlikely that the oculomotor disturbances, including SWJ, are attributable to cerebellar pathology per se. 相似文献
2.
The influence of contamination of culture medium with hepatitis B virus on the outcome of in vitro fertilization pregnancies. 总被引:1,自引:0,他引:1
H C van Os A C Drogendijk W P Fetter R A Heijtink G H Zeilmaker 《American journal of obstetrics and gynecology》1991,165(1):152-159
Heat-inactivated human serum is added to the culture medium used for in vitro fertilization and other forms of assisted conception. Because one batch of pooled serum contained hepatitis B virus, an epidemic occurred among women participating in the treatment program. Seventy-nine women had serologic proof of hepatitis B infection. This incident gave the opportunity to study the effect of hepatitis B virus on pregnancy outcome and the newborn. The situation is unique because the preimplantation embryo was exposed to hepatitis B virus or the pregnancy was complicated by a (sub)clinical infection. Twenty-four women were or became pregnant while having an acute hepatitis B infection. Five pregnancies ended in abortion. The remaining 19 pregnancies ended in the birth of 24 children. No evidence for any harmful effect of exposure to hepatitis B virus in the embryonic or fetal period on the newborn could be found. 相似文献
3.
Paraovarian cysts associated with prenatal diethylstilbestrol exposure. Comparison of the human with a mouse model 下载免费PDF全文
A F Haney R R Newbold B F Fetter J A McLachlan 《The American journal of pathology》1986,124(3):405-411
The association of prenatal exposure to diethylstilbestrol (DES) and abnormalities in structures of müllerian (paramesonephric) origin has been well documented. In a murine model, exposure to DES in utero results in persistent mesonephric remnants in adult female mice. Six women exposed prenatally to DES had paraovarian cysts excised during routine gynecologic surgery; and in 4, histologic abnormalities were observed, including thickened fibromuscular walls with tall columnar epithelium in a papillary or pseudoglandular configuration. Four of 25 nonexposed and 8 of 9 DES-exposed infertile women undergoing surgery for infertility had paraovarian cysts, and the difference was statistically significant (P less than 0.02). These findings raise the possibility that structures derived from the mesonephric ducts or tubules may also be affected in women exposed in utero to DES. 相似文献
4.
Fetter MP 《Health values》1985,9(3):20-22
Communication in the classroom is often a problem for both students and teachers. Previous research has shown that non-verbal teaching behavior can have a profound effect on students when mixed with verbalization and may serve as a major source of confusion. Misinterpretation is common and in the area of health education may foster the development of negative health attitudes. Health education is a shared experience of students and their teacher, one which should be comfortable and supportive. It is the educators responsibility to develop teaching behaviors that are encouraging, inspiring, and comfortable. This can be accomplished by using a variety of techniques requiring a minimum of time, equipment and energy. The purpose of this article is to demonstrate the need for cognizance of personal teaching behaviors and to suggest methods to evaluate these behaviors. 相似文献
5.
H F Seigler W W Shingleton R S Metzgar C E Buckley P M Bergoc D S Miller B F Fetter M B Phaup 《Surgery》1972,72(1):162-174
6.
Fetter M 《Journal of neurology》2000,247(5):335-342
Vertigo and dizziness are common complaints encountered in clinical practice. The patient’s history and a thorough otoneurological
evaluation are essential for identifying the specific pathology behind the patient’s complaints. If the patient reports an
illusion of movement (vertigo), this most likely indicates an imbalance within the vestibular system. A sensation of rotatory
movement together with a spontaneous nystagmus suggests a lesion involving the semicircular canals, while an illusion of linear
movement indicates a disturbance of the otoliths. Nystagmus of central origin or caused by a peripheral vestibular lesion
can usually be distinguished by other features in the history or on clinical examination. While peripheral vestibular lesions
usually lead to a mixed horizontal-torsional or vertical-torsional nystagmus, a pure vertical or pure torsional nystagmus
is always caused by a central lesion. With simple bedside tests such as head-shaking nystagmus and rapid head impulses deficits
in labyrinthine function can clearly be detected. For a more thorough investigation of vestibular function at the level of
individual semicircular canals and the otoliths, modern techniques are now available such as three-dimensional eye movement
vector analysis for the evaluation of individual semicircular canal function, measurement of the subjective visual vertical
for utricular, and click-evoked myogenic potentials for saccular testing.
Received: 3 October 1999/Accepted: 7 December 1999 相似文献
7.
Marilyn S. Fetter 《Issues in mental health nursing》2013,34(7):470-472
Disaster literature suggests that children's and adolescents’ post-disaster reactions vary according to their developmental levels. Preschool children show less psychological problems as compared to older children and adolescents, but they have a higher incidence of trauma-specific fears and behavioral problems (e.g., dependency, clinging). School-age children's disaster responses include sleep and eating disturbances, behavioral problems, and poor school performance. Adolescents tend to exhibit symptoms such as posttraumatic stress disorder, depression, anxiety, belligerence, and pessimistic views about the future (Korol, Green, &; Gleser, ). 相似文献
8.
9.
A noninvasive procedure has been developed to assess effectiveness of activity-sensing rate response ventricular (VVIR) pacing systems in patients with implanted conventional fixed-rate ventricular (VVI) pacemakers capable of triggered mode operation (VVT). A VVIR pacemaker (activity threshold medium or low, rate response 6 to 10, upper rate 125 or 150 beats/min) was strapped to the chest wall (prepectoral area) of patients with previously implanted fixed-rate VVI pacemakers. In 17 of the 18 patients included in the study, the implanted pacemaker was capable of triggered mode operation (VVT). Triggering of the conventional pacemaker was achieved by reprogramming it to the VVT mode (high sensitivity, short refractory) and connecting the output of the "strapped-on" VVIR pacemaker (5 volts, 1.5-ms pulse width) to 2 standard cutaneous electrodes positioned so as to be in proximity to the implanted intracardiac electrode system. Patients underwent symptom-limited treadmill exercise tests during both VVI and VVIR pacing. Triggering conventional VVI pulse generators by a "strapped-on" VVIR pacing system proved feasible in 16 of 17 cases and improved overall heart rate response (fixed rate 86 +/- 22 vs VVIR 118 +/- 7 beats/min) and exercise duration (fixed rate 6.6 +/- 4.9 vs VVIR 10.1 +/- 4.8 minutes) (mean values for all patients studied during exercise testing). Triggering of a previously implanted permanent pacemaker by a strapped-on activity-triggered device may be useful to assess rate response pacing before implantation of a VVIR device in patients in whom elective pulse generator replacement is planned. 相似文献
10.