No abstract available.
Hypertrophy*

In order to observe the effects of various click polarity and stimulus rate on brainstem auditory evoked potentials (BAEPs), we measured the absolute latency, interwave latency and amplitude. Variations of IV-V wave complex in different stimulus rate and polarity were also observed. Observations were made on 50 normal subjects(32 males and 18 females) aged 8 to 56. The results are summarized as follows, 1. With rarefaction click stimulation, the absolute latencies of wave I and wave V were shortest, and wave I and wave III amplitudes were most increased as compared with condensation or alternating-polarity. 2. The absolute latencies of wave I and wave V were most prolonged and wave V amplitude was highest with condensation clicks. 3. I - III, III -V and I - V interwave latencies were not significantly changed between any of polarities. 4. By increasing stimulus rate from 10 click / sec to 50 click / sec, absolute and interwave latencies were significantly prolonged. Except wave V amplitude at condensation and alter-nating-polarity clicks, all wave amplitudes were decreased significantly. 5. The waveforms were classified into 5 types according to configuration of IV - V wave complex. At any conditions, type A and B were present most frequently. We proposed that if one is to employ only a single stimulus polarity, rarefaction clicks should be used because this will produce the earliest and largest wave I. Condensation can be used in those cases in whom rarefaction does not produce clar waveforms, or when wave V appears absent. The use of alternating-polarity clicks as the only mode of stimulation is discouraged because of the possibility of phase cancellations.
Brain Stem* ; Evoked Potentials, Auditory, Brain Stem* ; Humans ; Male

No abstract available.
Kinetics* ; Wrist*

A clinical study was made on 14 cases of coronary sinus rhythm and 17 cases of left atrial rhythm seen at the Kyungpook University Hospital during the past 13 years. The incidence of coronary sinus rhythm among 23, 137 electrocardiograms was 0.07% and that of left atrial rhythm was 0.08%. Among the various types of left atrial rhythm as diagnosed by Mirowski's criteria, type III, posterior type and inferior type were far more common than others. The most common underlying diseases were heart diseases in both coronary sinus rhythm and left atrial rhythm: five cases out of 14 in the former and 11 cases out of 17 in the latter were cardiac cases, respectively.
Coronary Sinus* ; Electrocardiography ; Gyeongsangbuk-do ; Heart Diseases ; Incidence

It is essential to define the mechanical and morphological characteristics of bone in undrestanding the mechanism and treatment of fractrues of bone. We already reported the results of bending study in 1983 and tension study in 1987 to assess the mechanical and morphological changes of bone according to the growth. Following these studies, we performed torsion study on growing long bone to have better understanding of the characteristics of bone. In order to assess the mechanical and morphological properties of fracture of growing bone by torsion, we divided 100 Newzealand white rabbits(40 1-month-old rabbits, 20 3-months old rabbits and 40 5-months-old rabbits) into 6 experimental groups according to their maturity and side : Group 1(right femur of 1 month old), Group 2( left femur of 1 month old), Group 3(right femur of 3 months old), Group 4(left femur of 3 months old), Group 5(right femur of 5 months old), Group 6(left femur of 5 months old). Each group of femora were loaded in torsion with varing distance and the following results were obtained: 1. Fracture shapes were composed of the spiral component and the vertical component which connected the two ends of the spiral component. 2. Younger bones revealed greater deformation angle and apex angle but less obliquity than older bones. 3. When the gap between the grips were lengthened three times, there was a very signi ficant increase of deformation angle and obliquity but apex angle was decreased and the fracture angle showed little change. 4. It was necessary to measure the apex angle and obliquity in the morphological description of fractures by torsion. 5. We observed when a certain degree of angular deformity was applied on a bone at a certain age, the fracture was occured through the tension failure regardless of types of loading forces.
Congenital Abnormalities ; Femur ; Hand Strength ; Humans ; Infant, Newborn ; Rabbits

The development of pentylenetetrazol (PTZ) kindling has been controversial, authors confirmed the development of kindling phenomenon in experimental rats following every second or third day intraperitoneal administration of PTZ(20-25mg/kg) to experimental rats and same amount of saline to control rats. The developmental stage of motor seizure could be categorized into five stages (stage I; clonic seizure of face and neck, stage II; clonic seizure of face, neck and forelimbs, stage III; clonic seizure of forelimbs and body with brief rearing, stage IV; falling and generalized clonic seizure, stage V; falling and generalized tonic-clonic seizure with tonic extension of hindlimbs). Linear regression analysis showed that the stages of motor seizure were increased with the number of PTZ injections (Y=0.1361X + 0.1943, p < 0.05). The persistence of kindling state was also observed after a 5-months pause of PTZ injection. This study suggested that PTZ kindling model in rats could be a good animal model of generalized epilepsy.
Animals ; Epilepsy, Generalized ; Forelimb ; Linear Models ; Models, Animal ; Neck ; Pentylenetetrazole* ; Rats* ; Seizures

No abstract available.
Antibodies* ; Humans ; Leprosy*

In order to obsetve the effect of stroke on hypothalamic-pituitary axis, TRH stimulabon test and dexamethasone suppression test(DST) were performed in 52 patients with stroke(cerebral infarction, 16 cases; intracerebral hemorrhage, 15 cases: subarachnoid hemorrhage, 21 cases) and 15 age-sex matched patients control without intracrania disease at Keimyung University Dongsan Hospital from April 1987 to August 1988. The results summarized as follows. 1. The frequency of blunted response on TRH stimulation test is significantly higher in total stroke and patients with cerebral infarction than in control(P<0.06, P<0.05). 2. The frequency of DST non-suppression in patients with cerebral infarction is significantly higher than in control, patients with cerebral hemorrhage and patients with subarachnoid hemorrhage(P<0.001, P<0.01, P<0.01). 3. Patients with left hemispheric stroke tend to show more frequent abnormal neuroendocrine test results than patient with right hemispheric stroke. 4. There are no correlation between abnormal neuroendocrine test results and age, sex, size of stroke and Barthel ADL scale. These results suggest stroke can influence on hypothalamic-pituitary axis, more marked in cerebral infarction and left hemispheric lesion.
Activities of Daily Living ; Axis, Cervical Vertebra ; Cerebral Hemorrhage ; Cerebral Infarction ; Dexamethasone ; Humans ; Infarction ; Stroke* ; Subarachnoid Hemorrhage

After ocular contusion the ocular tension is unstable and may show considerable variation, sometimes being raised, sometimes lowered. But ocular contusion is one of the commonest causes of ocular hypotension, which may be dramatic and indeed, may be the dominant factor in determining the fate of the eye. The lowering ocular tension is slowly attaining its normal height after some variation, that this instability is frequently shared by the uninjured fellow eye. We had experienced a fall in tension-ocular hypotension as 0 mm.Hg. lasting for 13 day by ocular contusion, which was associated with mild anterior uveitis, Descemet's membrane tear, localized angle recession and hypotonic retinal changes, and shared lower ocular tension by the uninjured eye, as l4.6 mmHg. All these acute ocular hypotensive symptoms and signs were recovered 27 days after contusion, but mild Descemet's scar and angle recession with peripheral anterior synechia were remained. The final IOP in both eyes was 18.3 mmHg, and the visual acuity was 20/20.
Cicatrix ; Contusions* ; Descemet Membrane ; Hypotension ; Intraocular Pressure ; Ocular Hypotension* ; Retinaldehyde ; Uveitis, Anterior ; Visual Acuity

A 46 years old male patient had visited to our Ophthalmology department due to abrupt onset of decreased visual acuity in his left eye. He had taken an operation for correction of high myopic astigmatism on both eyes 23 years ago in Japan by Dr. Sato. His visual acuity was: (R)0.3(0.7 x Sph. + 0.75D. = Cyl. - 5.50D.A10 degrees) (L)0.15(0.2 x Sph. - 2.50D. = Cyl. - 2.25D. A180 degrees). On slit lamp examination. hoth cornea had 3mm. (length) radiated linear scars in a number about 50 resulted from myopic operation. In his left cornea, several small vesicles and mild corneal central opacity were observed. We have diagnosed this symptom as artificial corneal endothelial Dystrophy.
Astigmatism ; Cicatrix ; Cornea ; Humans ; Japan ; Male ; Middle Aged ; Myopia* ; Ophthalmology ; Visual Acuity