摘要:

71 chronic renal failure patients undergoing long-term hemodialysis were evaluated for the effects of a dialysis event on hearing function. Osmotically active serum constituents were examined for relationship to fluctuating hearing threshold levels. Reliability of hearing levels was found to be better in those patients tested without an intervening dialysis event. Those patients tested before and after hemodialysis demonstrated greater hearing fluctuation than those patients evaluated between dialysis events. This threshold fluctuation was unrelated to serum urea nitrogen, creatinine, K+, Na+, Ca++, or glucose. It was concluded that hearing test reliability in dialyzing renal patients is reasonably good, but test results are likely to be more consistent if testing is accomplished a number of hours after a given dialysis event. Contrary to a number of reports in the recent literature, no direct relationship between hearing level fluctuation and fluctuation in individual osmotically active serum constituents appeared to be present.

ISSN:0301-1569    

DOI:10.1159/000275268

出版商:S. Karger AG    

年代:1976

数据来源: Karger

摘要:

The question of the point of impact of the electric current in the galvanic vestibular test is not solved. An important feature is that, after destruction of both the vestibular end organs, a galvanic nystagmus can still be provoked. The effect of a direct current on the spontaneous nystagmus following partial or total destruction of the vestibular end organs was investigated. The frequency of the spontaneous nystagmus diminishes when the electric stimulus causes an eye movement in the same direction as the fast phase of the nystagmus, the frequency increases when the polarity of the electric stimulation is reversed. Simultaneous application of torsion-swing and electric stimulation causes a summation of the separate effects. Our findings confirm the conclusions drawn by Ledoux (4, 5) from his findings in frogs.

ISSN:0301-1569    

DOI:10.1159/000275269

出版商:S. Karger AG    

年代:1976

数据来源: Karger

摘要:

The relationship between visual line and target in optokinetic nystagmus was studied by means of the eye-mark camera and film-motion analyser. The eye-mark camera provides a series of pictures in which the visual field and fixation point of the subject overlap. The visual line is observed as a spot of light on the film. Accurate analysis of films with the analyser produces detailed information on the calibration and movement of the target and visual line. Comparison with the ENG, taken simultaneously, indicates the adequate sensitivity and accuracy of this method. There are five types of relationship between visual line and target in optokinetic nystagmus. In type I, the visual line coincides with the target in the slow component of nystagmus. This type agrees with the conventional consideration of the slow component of nystagmus. Type II indicates the existence of some servo-mechanism in the target catching action of the eye. In type III, there are three kinds of slow components, one coincides with one edge of the target, one with the other edge and another fixes on some point between the two and follows it. The velocities of these three are equal to that of the target. In type IV the visual line gradually lags behind the target, but the rhythm of the nystagmus coincides with that of the stimulation. In type V, dysrhythmic nystagmus develops and the visual line often jumps over several targets without fixation.

ISSN:0301-1569    

DOI:10.1159/000275270

出版商:S. Karger AG    

年代:1976

数据来源: Karger

摘要:

Experimental cryosurgery of the nasal mucosa in normal guinea pigs and in animals with drug-induced vasomotor rhinopathy showed complete closure of the initial ulceration by a temporary atypical epithelium within 2 weeks. 3–4 weeks after cryotreatment, normal ciliated epithelium covered the whole area. Within 4–5 weeks, the last signs of inflammatory reaction disappeared. The treatment resulted in a definitive reduction of mucosal thickness, and in a numerically significant loss of vessels and glandular acini. The histopathological results thus agreed with the clinical objective of the treatment in vasomotor rhinopathy (reduction of the nasal resistance and diminution of rhinorrh

ISSN:0301-1569    

DOI:10.1159/000275271

出版商:S. Karger AG    

年代:1976

数据来源: Karger

摘要:

The fine structure of the allergic nasal mucosa following vidian neurectomy was studied in 15 patients. The structure of the mucous glands, venules, arterioles and tunical cellular elements returned to normal 1 month after the operation, while that of the epithelium and of the capillaries only 3 months post-operatively. The effect of interrupting the hyperactive cholinergic nerve impulses on the various constituents of the nasal mucosa is described.

ISSN:0301-1569    

DOI:10.1159/000275272

出版商:S. Karger AG    

年代:1976

数据来源: Karger

摘要:

214 patients with chronic bronchitis were subjected to bronchial studies at Päivärinne Chest Hospital during the period 1967–1973. Bronchoscopy alone gave a frequency of 30 % for bronchiectases while the information from bronchography increased this figure to 44 %. In addition, 24 % of the patients showed bronchographic changes in the form of naked filling or mucus obstruction. Sputum specimens were less reliable indicators of infection than bronchial aspirates in patients with chronic bronchitis. Tracheobronchomalacia was found in 50 patients and greatly increased the gravity of the dise

ISSN:0301-1569    

DOI:10.1159/000275273

出版商:S. Karger AG    

年代:1976

数据来源: Karger

摘要:

A series of 16 patients with tracheal compression by the innominate artery is presented. In more than half of the patients the symptoms began during the first few days of life with stridor of varying severity, recurrent tracheobronchitis and apneic spells. In six cases requiring surgical treatment the immediate result was good. In ten mild cases treatment consisted of medical management and follow-up. The present study confirms that the great arteries can exert severe compression on the trachea, which can always be relieved by means of an operation which moves the arteries forward. Bronchoscopy is considered to be the only reliable means of diagnosis. This entity should be considered more often in the differential diagnosis in children less than 3 years of age with stridor, breathing difficulties, recurrent infections, apneic spells, and asthma.

ISSN:0301-1569    

DOI:10.1159/000275274

出版商:S. Karger AG    

年代:1976

数据来源: Karger