1.A Study on the Development of R-R Interval Analyzer using Microcomputer (1).
Yeungnam University Journal of Medicine 1985;2(1):77-80
The R-R interval analyzer was developed to measure the autonomic nervous system function using microcomputer. The system based on 8 bit microcomputer including bandpass filter, R-wave detector and clock generator in order to obtain the mean value, standard deviation, total time, CV value, maximum value and minimum value in the specific view point of R-R interval variation. The pattern of R-R interval change after resting, voluntary standing and deep breathing can be analyzed in normal subjects and diabetics with autonomic nervous dysfunction. The amplitude of the R-R interval variation showed sensitive pattern for normal subjects at resting, standing and deep breathing. On the contrary, the periodicities of amplitude for abnormal subjects with autonomic nervous dysfunction showed dull pattern. It was suggested that R-R interval analyzer is a good detection method for dysfunction of autonomic nervous system.
Autonomic Nervous System
;
Methods
;
Microcomputers*
;
Periodicity
;
Respiration
2.Differentiations of Retinal Detachment and Vitreous Membrane Using Color Doppler Imaging.
Journal of the Korean Ophthalmological Society 1997;38(6):992-999
In eyes with media opacity and equivocal ultrasonographic findings, we can differenciate retinal detachment from vitreous membrane using color doppler imaging(CDI), which allows the display of blood flow characteristics on conventional ultrasonography. The authors performed high resolution Bscan ultrasonography and color doppler imaging simultaneously in 31 eyes with opacity of ocular media, and their intraoperative characteristics and post operative results were evaluated. In 30 eyes with retinal detachment or vitreous membrane, 7 eyes(23%) had equivocal ultrasonographic findings and needed color doppler imaging. Nine eyes(75%) had positive color signal in 12 eyes with retinal detachment, whereas 3 eyes negative. 17 eyes(94%) had negative color signal in 18 eyes with vitreous membrane, 1 eye with proliferative diabetic retinopathy had positive. In conclusion, color doppler imaging is a useful diagnostic method in differentiating retinal detachment from vitreous membrane.
Diabetic Retinopathy
;
Membranes*
;
Retinal Detachment*
;
Retinaldehyde*
;
Ultrasonography
3.Cloning and Sequence Analysis of Gene Encoding an Outer Membrane Protein ( OmpTL ) of Treponema Strain PFB4G Isolated from Periodontitis Patients.
Bong Kyu CHOI ; Kwang Kyun PARK
Journal of the Korean Society for Microbiology 1999;34(2):201-209
Treponema strain PFB4G is a novel oral spirochete and one of the most frequently detected organisms in subgingival plaque samples from rapidly progressive periodontitis and adult periodontitis patients. In this study, a genomic library of Treponema strain PFB4G was constructed in lambdaZAP expression vector. One positive clone that carried a 2.6-kb fragment was identified by screening with chicken Ig Y (immunoglobulin yolk) antibody raised against whole bacterial sonicates. Nucleotide sequencing of the subclones revealed an open reading frame (ORF) lacking the 5'-end. This region was obtained by PCR amplification using a degenerative and a specific primer. A complete open reading frame of 1,770 bp was identified and the deduced polypeptide consisted of 590 amino acids with a molecular mass of 65 kDa. The polypeptide, designated as OmpTL, had a typical prokaryotic signal sequence (19 amino acids) with a potential cleavage site for signal peptidase I and showed a significant level of homology with the outer membrane proteins of other oral treponemes, especially with that of Treponema maltophilum. The isolation of the gene encoding an outer membrane protein may allow the study of their roles in future, possibly as adhesion, pore forming or induction of proinflammatory cytokine synthesis.
Amino Acids
;
Chickens
;
Chronic Periodontitis
;
Clone Cells*
;
Cloning, Organism*
;
Genomic Library
;
Humans
;
Mass Screening
;
Membrane Proteins*
;
Membranes*
;
Open Reading Frames
;
Periodontitis*
;
Polymerase Chain Reaction
;
Protein Sorting Signals
;
Sequence Analysis*
;
Spirochaetales
;
Treponema*
4.Immunohistochemical study on corticotropin releasing factor(CRF)- containing neuron in the rat hypothalamus.
Korean Journal of Anatomy 1992;25(2):152-160
No abstract available.
Adrenocorticotropic Hormone*
;
Animals
;
Hypothalamus*
;
Neurons*
;
Rats*
5.A Combined Scapular Flap and Latissimus Dorsi Flap
Soo Bong HAHN ; Chong Hyuk CHOI
The Journal of the Korean Orthopaedic Association 1986;21(4):538-546
The treatment of extensive soft tissue injury of lower extremities is known to be one difficulty in the field of orthopedic surgery. At present, reconstructive surgery with free flap is being employed under the microscopy actively. But the size of defect is found larger than the maximum size of one free flap frequently. The authors present 6 cases of a combined scapular flap and latissimus dorsi flap for extensive soft tissue injury of the lower extremities at the department of orthopedic surgery of Severance hospital, during years period from 1983 to 1985. The results of the study are as follow: l. A one stage reconstruction of extensive soft tissue injury was done with a combined scapular flap and latissimus dorsi flap. 2. In spite ofa few complications of donor and recipient sites, the advantage of combined scapular flap and latissimus dorsi flap exceed the any methods that have been employed in functional and plastic aspects. 3. There was no limitation of motion of the shoulder in spite of the excision of the large combined scapular flap and latissimus dorsi flap around the axillary area. 4. The primary closure of the donor sites was feasible. 5. The reconstructive surgery of the extensive soft tissue injury using the above combined scapular flap and latissimus dorsi flap can be used without restriction as to the age of the patient.
Free Tissue Flaps
;
Humans
;
Lower Extremity
;
Microscopy
;
Orthopedics
;
Plastics
;
Shoulder
;
Soft Tissue Injuries
;
Superficial Back Muscles
;
Tissue Donors
6.Free Vasularized Scapular and Parascapular Flap
The Journal of the Korean Orthopaedic Association 1990;25(1):277-283
The trestment of extensive soft tissue injury of the extremities is known to be one difficulty in the field of Orthopedic Surgery. The authors present a study of 55 free vascularized scapular flaps, 12 free vascularized parascapular flaps and 9 combined scapular and latissimus dorsi flaps for extensive soft tissue injury of the extremities at the Department of Orthopedic Surgery, Severance Hospital from March 1983 to December 1988. The results of the study are as follows:1. The pedicles of the flap were consistent in length and diameter. 2. The flap was uniform and relatively thin in thickness in free scapular and psrascapular flaps 3. There was no limitation to motion of the shoulder despite excision of the scapular and parascapular flap. 4. Primary closure of the donor flap was feasible in almost all cases. 5. Reconstruction of a 1arge soft tissue defect was possible with scapular and parascapular flap in one stage. 6. The free vaseularized scapular flap and parascapular flap would be recommended of one-stage reconstructional surgery for extensive soft tissue defects.
Clothing
;
Extremities
;
Humans
;
Orthopedics
;
Shoulder
;
Soft Tissue Injuries
;
Superficial Back Muscles
;
Tissue Donors
7.Distribution of NPY-immunoreactive neurons in the visual cortex of the cat.
Chang Do CHOI ; Young Gil JEONG ; Wol Bong CHOI
Korean Journal of Anatomy 1993;26(3):258-267
No abstract available.
Animals
;
Cats*
;
Neurons*
;
Visual Cortex*
9.Reverse Total Shoulder Replacement for an Enchondroma with Concomitant Rotator Cuff Tear Arthropathy: A Case Report.
Bong Ju PARK ; Ki Yong AN ; Yong Suk CHOI
Clinics in Shoulder and Elbow 2017;20(2):100-104
Enchondromas generally occur in the hand and uncommonly in the long bones. Because enchondromas are usually asymptomatic, most are discovered during diagnostic radiology for another disease. Here, we describe a case of enchondroma in the right humerus in a 79-year-old female patient with concomitant rotator cuff tear arthropathy. The patient was initially hospitalized for prolonged pain and pseudoparalysis of the right shoulder. The condition, which was histologically confirmed as an enchondroma in the proximal humerus, was treated with curettage and reverse total shoulder arthroplasty. In this case report, we present a rare case of an enchondroma with combined rotator cuff tear arthropathy.
10.Ectopic Kidney.
Kook Pyung KANG ; Hyun Dal CHOI ; Ki Bong PARK
Korean Journal of Urology 1970;11(1):19-22