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81.
82.
AJ Phillips 《Clinical & experimental optometry》1989,72(2):32-34
A patient with severe ocular albinism was fitted with a prosthetic soft contact lens which improved both photophobic symptoms and facial cosmesis. 相似文献
83.
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85.
Anxiety in patients undergoing MR imaging 总被引:6,自引:0,他引:6
To determine and quantify the major sources of anxiety for patients undergoing magnetic resonance (MR) imaging and to suggest means by which to eliminate or diminish their negative effects, the authors studied anxiety in 46 subjects. Of these, 20 randomly selected subjects who successfully completed the examination participated in exit interviews. Six subjects who terminated the examination before completion also completed exit interviews. Pre-imaging and postimaging questionnaires (state-trait anxiety inventory) were administered to measure anxiety in the 20 other subjects. Anxiety was associated with the constrictive dimensions of the magnet bore, examination duration, coil noise, and temperature within the bore. Preparation at the point of referral was consistently absent, incomplete, or misleading. Patients used identifiable strategies to cope with the examination: blinding, breathing relaxation techniques, visualization of pleasant images, and performance of mental exercises. 相似文献
86.
Di Chiro G; Girton ME; Frank JA; Dietz MJ; Gansow OA; Wright DC; Dwyer AJ 《Radiology》1986,160(1):221-222
Canine cerebrospinal fluid rhinorrhea, which occurs frequently in purebred beagles, was demonstrated in two dogs on magnetic resonance images after cisternal introduction of gadolinium-DTPA dimeglumine. 相似文献
87.
对人流感病毒A/Udorn/72(H_3N_2)株与禽类流感病毒A/Mallard/NY/78/(H_2N_2)重组后的重组株分析表明,仅含禽类病毒的核蛋白(NP)或膜蛋白(M)的RNA片段的重组株,在松鼠猴的呼吸道繁殖是受限制的。另外。仅有禽类的RNAl和NS基因的重组株(Clone 12)在松鼠猴的气管内的繁殖也明显受限制,而只具有其中一个基因的Clone 9, Clone 2, 则限制就不明显。由此表明,禽类流感病毒的NP和M基因在宿主范围的繁殖限制中起主要作用,而RNAI和SN基因的结合,同样起着繁殖受限制作用。 相似文献
88.
STEWART AJ; ALLEN JD; ADGEY AAJ 《QJM : monthly journal of the Association of Physicians》1992,85(1):761-769
SUMMARY In 56 patients, frequency analysis of the electrocardiogramof ventricular fibrillation exhibited power spectra with a distinctdominant frequency. The greatest success for resuscitation fromventricular fibrillation is recorded when ventricular fibrillationdevelops after the patient comes under coronary care. Of the41 patients in whom the onset and first 8 s of ventricular fibrillationwere artefact-free the mean dominant frequency of primary ventricularfibrillation (no cardiogenic shock or cardiac failure) in 21patients was 6.2±0.2 Hz, significantly higher than themean dominant frequency of the first 8 s of secondary ventricularfibrillation (cardiogenic shock or heart failure) (4.0±0.2Hz, 20 patients, p =0.0001). In these patients the peak-to-troughamplitude (ECG) of the first 8 s of ventricular fibrillationwas similar in both primary and secondary ventricular fibrillationas was the mean duration of ventricular fibrillation prior tothe first DC shock. There was a significantly lower successrate for resuscitation from secondary ventricular fibrillation(6 of 20 patients) compared with resuscitation from primaryventricular fibrillation (18 of 21 patients, x2 17.8, p=0.001).Of the remaining 15 patients who were collapsed between 3 and20 min before the arrival of the mobile coronary care unit,the dominant frequency of the first 8 s of ventricular fibrillationfell with increased duration of collapse (from 5.5 Hz at 3 minto a mean of 2.1 Hz at 20 min). Four of these 15 patients whosurvived the initial arrest had a mean dominant frequency of5.2±0.3 Hz, which was significantly higher than the meandominant frequency (3.1±0.3 Hz, p<0.01) of the 11patients who were not resuscitated. This study shows that low frequency ventricular fibrillationis indicative of a poor chance of successful resuscitation.Alteration of the frequency may increase resuscitation success. 相似文献
89.
O'Mahony S; Morris AJ; Straiton M; Murray L; MacKenzie JF 《QJM : monthly journal of the Association of Physicians》1996,89(9):685-690
We report our experience with small-bowel push enteroscopy in 50 patients.
The indications for push enteroscopy were: anaemia/occult gastrointestinal
bleeding (22 patients); overt gastrointestinal bleeding (17 patients);
abnormal small-bowel radiology (8 patients) and miscellaneous (3 patients).
In those with undiagnosed gastrointestinal bleeding/anaemia, abnormalities
were detected in 24/39 patients (62%): small bowel arteriovenous
malformations (AVMs) were detected in 19 (49%), and five (13%) had lesions
in the upper gastrointestinal tract. Seventeen patients had heater-probe
ablation therapy of vascular lesions: nine patients had small-intestinal
lesions, four patients gastric lesions, and four patients combined gastric
and small- intestinal lesions. In those with abnormal small-bowel
radiology, abnormalities were detected in 6/8 patients. We conclude that
(i) push enteroscopy can establish a diagnosis in a high proportion of
patients with gastrointestinal bleeding; (ii) heater-probe ablation therapy
of vascular lesions can be performed routinely at the time of enteroscopy;
(iii) a significant proportion of patients (9/50) referred for enteroscopy
with undiagnosed gastrointestinal bleeding have lesions in the
stomach/proximal duodenum missed at diagnostic endoscopy. Push enteroscopy
is a valuable diagnostic and therapeutic endoscopic procedure.
相似文献
90.