1.A comparison of ritodrine hydrochloride(Yutopar@) and nifedipine in the treatment of preterm labor.
Jeong Seung LEE ; Jang Heub KIM ; Do Kang KIM ; Dae Hoon KIM ; Hun Young LEE
Korean Journal of Obstetrics and Gynecology 1991;34(3):340-347
No abstract available.
Female
;
Nifedipine*
;
Obstetric Labor, Premature*
;
Pregnancy
;
Ritodrine*
2.Allergic Contact Dermatitis to Paratertiary Butylphenol Formaldehyde Resin.
Yun Jeong LEE ; Hun Young JANG ; Chun Wook PARK ; Cheol Heon LEE
Annals of Dermatology 1995;7(1):79-81
The paratertiary butylphenol formaldehyde resin(PTBP-FR) is commonly used in neoprene shoe adhesive to provide stability, durability, flexibility, and to stick quickly. We report here a case of allergic contact dermatitis in a 22-year-old female, who had well defined, pruritic, erythematous, and papulovesicular lesions on the lateral side of the left foot and ankle for 3 years. Patch test showed 2+(vesicular) reaction .to PTBP-FR(1% in petrolatum), a piece of leather shoes(as is), and a piece of leather watch strap(as is).
Adhesives
;
Ankle
;
Dermatitis, Allergic Contact*
;
Female
;
Foot
;
Formaldehyde*
;
Humans
;
Neoprene
;
Patch Tests
;
Pliability
;
Shoes
;
Young Adult
3.Two Cases of Allergic Contact Dermatitis to Rosehip Oil.
Hun Young JANG ; Yun Jeong LEE ; Dae Won KOO ; Chun Wook PARK ; Cheol Heon LEE
Annals of Dermatology 1996;8(2):114-116
No abstract available.
Dermatitis, Allergic Contact*
;
Rosa*
4.Motility restriction after resection of an extraocular muscle.
Shin Jeong KANG ; Jeung Hun JANG
Korean Journal of Ophthalmology 2001;15(2):133-136
Restriction of eye movement after surgery is an unusual but troublesome complication. A patient presented with a limitation of abduction after a 5 mm resection of medial rectus muscle and an 8 mm recession of lateral rectus muscle. Since the forced duction test was positive, restrictive factors were suggested to be implicated. A reparative operation was performed at the postoperative 9 month, and the forced duction test was negative after releasing the resected medial rectus muscle. The patient showed an improved abduction after recessing the resected muscle. Even after an uneventful surgery, resection of an extraocular muscle may cause restriction of ocular rotation caused by muscle scarring to the sclera or by an increased tightness of the muscle.
Adolescent
;
Case Report
;
Exotropia/*surgery
;
*Eye Movements
;
Human
;
Male
;
Ocular Motility Disorders/*etiology/*physiopathology
;
Oculomotor Muscles/*physiopathology/*surgery
;
Ophthalmologic Surgical Procedures/*adverse effects
;
Postoperative Period
5.Clinical Study After Reconstruction of the Posterior Cruciate Ligament: Factors on Posterior Stability.
In Ho SEONG ; Beom Ku LEE ; Young Hun JANG ; Seung Jeong BAEK
Journal of the Korean Knee Society 1999;11(1):62-68
The goals of treatment in the injuries of posterior cruciate ligament(PCL) are restoration of normal tibiofemoral stability and reduction of long term osteoarthrosis of the knee. The purpose of this study is to analyze the factors on posterior stability and functional result after PCL reconstruction. From March 1996 to April 1997, twenty operation on PCL reconstruction were carried out in our hospital. The functional results according to the criteria of the Lysholm knee score and stress radiograph for posterior stability were evaluated. The average functional results evaluated by Lysholm knee score was 87. There was no significant difference in functional result according to selected grafted material, combined knee injury, type of injury and arthrotomy, etc. Difference in posterior tibial translation on average were 2.8mm in acute and 7.7mm in chronic injury. In posterolateral combined injury, average posterior tibial translation in pos- terolateral repair was 3.2mm and in posterolateral reconstruction was 9.4mm. In PCL reconstruction using hamstring with repair of PCL remnant was 2mm. In conclusion, to obtain the good result on posterior sta- bility, early PCL reconstruction using hamstring with repair of PCL remnant, and appropriate treatment on combined posterolateral injury were recommended.
Knee
;
Knee Injuries
;
Osteoarthritis
;
Posterior Cruciate Ligament*
;
Transplants
6.Relationship Between Facial Bone Fractures and the Risk of Posttraumatic Complications: A Hypothesis on the Cushion Effect of the Facial Skeletons in Temporal Bone Fractures
Hantai KIM ; Jang Gyu HAN ; Hun Yi PARK ; Yun-Hoon CHOUNG ; Jeong Hun JANG
Journal of Korean Medical Science 2023;38(27):e215-
Background:
This study investigated whether concomitant facial bone (FB) fractures reduce temporal bone (TB) injuries, such as posttraumatic facial palsy and vertigo, through an impact absorbing effect, so-called “cushion effect,” in severe trauma patients.
Methods:
A total of 134 patients with a TB fracture were included. They were divided into two groups according to their concomitant facial fractures: group I (no FB fracture) and group II (FB fracture). We compared clinical characteristics, such as brain injury, trauma severity, and complications of TB fracture, between the two groups.
Results:
In group II, immediate facial palsy was more frequent (11.6% vs. 1.5% in group I), and the Injury Severity Score was higher (19.0 ± 5.9 vs. 16.7 ± 7.3, P = 0.020). Delayed facial palsy (12.3% in group I vs. 4.3% in group II) and posttraumatic vertigo (24.6% vs.7.2%) occurred more often in group I. FB fractures significantly decreased the incidence of posttraumatic vertigo (odds ratio [OR], 0.276; 95% confidence interval [CI], 0.083–0.914). Intraventricular hemorrhage (OR, 20.958; 95% CI, 2.075–211.677), facial nerve canal injury (OR, 12.229; 95% CI, 2.465–60.670), and FB fractures (OR, 16.420; 95% CI, 1.298–207.738) increased the risk of immediate facial palsy.
Conclusion
Concomitant FB fractures reduced the risk of the occurrence of delayed facial palsy and posttraumatic vertigo in injured patients with TB fracture. Particularly, an anterior force may be reduced by the cushion effect of the bony fracture.
7.Changes in Vestibular Symptoms and Function After Cochlear Implantation: Relevant Factors and Correlations With Residual Hearing
Jeong Hun JANG ; Hantai KIM ; Oak-Sung CHOO ; Hun Yi PARK ; Yun-Hoon CHOUNG
Clinical and Experimental Otorhinolaryngology 2021;14(1):69-75
Objectives:
. The aim of this study was to evaluate vestibular function loss after cochlear implantation (CI) and the relationship between vestibular function and hearing changes.
Methods:
. Seventy-five patients with CI were enrolled and divided into those with normal preoperative caloric function (group I) and those with a normal preoperative waveform in cervical vestibular evoked myogenic potential (c-VEMP) testing (group II). The relationship between hearing and changes in the vestibular system was analyzed preoperatively and at 3 and 6 months postoperatively.
Results:
. In group I, unilateral weakness on the implanted side was detected in five (7.7%) and eight (12.3%) patients at 3 and 6 months post-CI, respectively. By 3 months post-CI, the total slow-phase velocity (SPV; warm and cold stimulations) was significantly different between the implanted and non-implanted sides (P=0.011), and the shift in total SPV from pre- to post-CI was significantly correlated with the average hearing threshold at 6 months post-CI. In group II, an abnormal c-VEMP was detected on the implanted side in six patients (16.2%) at 3 months post-CI, and in six patients (16.2%) at 6 months post-CI. Significant changes were noticed in the P1 and N1 amplitude at 3 months postCI (P=0.027 and P=0.019, respectively).
Conclusion
. Vestibular function and residual hearing function should be afforded equal and simultaneous consideration in terms of preservation.
8.Cochlear Implantation via the Transmeatal Approach in an Adolescent with Hunter Syndrome—Type II Mucopolysaccharidosis
Hantai KIM ; Jun Young AN ; Oak-Sung CHOO ; Jeong Hun JANG ; Hun Yi PARK ; Yun-Hoon CHOUNG
Journal of Audiology & Otology 2021;25(1):49-54
Type II mucopolysaccharidosis (MPS II) commonly known as Hunter syndrome, is a rare X-linked lysosomal storage disorder caused by iduronate-2-sulfatase deficiency, which in turn causes otorhinolaryngological manifestations, including sensorineural hearing loss (SNHL). Previously, the median survival age of patients with MPS was approximately 13.4 years. However, in the era of enzyme replacement therapy and other multidisciplinary care modalities, the life expectancy has increased. Herein, we report a rare case of an adolescent with MPS II who underwent SNHL treatment with cochlear implantation (CI). Based on unexpected findings of mastoid emissary veins and overgrowth of the vessels around the temporal bone, CI was performed using the transmeatal approach instead of the conventional transmastoid method, to avoid damage to the vessels. The average hearing threshold after CI was 35 dB and no surgical complications were encountered. Adolescent MPS II may present vessel abnormalities, which can reduce the success rate of surgery. In patients with MPS II with SNHL, CI should be performed under careful monitoring of vessel overgrowth. Moreover, with regard to feasibility of CI in adolescent patients with MPS II with SNHL, surgical techniques such as the transmeatal approach should be selected based on adequate assessment of the case.
9.Microcystic Meningioma: Case Report.
Hyeun Sung KIM ; Suk Jung JANG ; Seong Hun JEONG
Journal of Korean Neurosurgical Society 1998;27(9):1271-1276
Microcystic meningioma, a distinct morphological variant of meningiomas, is histologically characterized by a vacuolated appearance with multiple cystic spaces lined by vacuolated or stellate-shaped tumor cells. This unusual variant was originally described by Masson, who labeled it "humid". The clinical and morphological findings point toward a benign course. And these unusual morphological variants of meningioma are potentially curable tumor. But there is no definitive method for preoperatively differentiating microcystic meningioma from the malignant glioma. We report a case of microcystic meningioma occurring in the left frontal area of 74 year old woman, with malignant clinical nature.
Aged
;
Female
;
Glioma
;
Humans
;
Meningioma*
10.Effect of surface treatments of zirconia ceramic on the bond strength of resin cements.
Chang Hun KIM ; Young Chan JEON ; Chang Mo JEONG ; Jang Seop LIM
The Journal of Korean Academy of Prosthodontics 2004;42(4):386-396
STATEMENT OF PROBLEM: It is not clear how to make a stable bonding between zirconia ceramic and resin cement. And the study about surface treatment of zirconia ceramic or bonding resin cement are not enough. PURPOSE: To measure and compare the shear bond strength of some resin cements on zirconia ceramic after different surface treatments. MATERIAL AND METHOD: 48 ceramic discs were made of 3 ceramic materials, zirconia ceramics Zi-Ceram), heat-pressed ceramics (IPS Empress 2) and slip cast alumina ceramics (In-Ceram). According to the surface treatments of ceramic specimens and resin cements, specimens were classified into 6 groups and each group was composed of 8 specimens. For the surface treatment of Zi-Ceram group (test group), sandblasting and diamond bur preparation were applied and Superbond C&B and Panavia F were bonded respectively. For IPS Empress 2 group (control group), Variolink II was bonded after sandblasting, acid etching, silanization and for In-Ceram ALUMINA group (control group), Panavia F was bonded after sandblasting. After storing specimens in distilled water for 24 hours, the shear bond strength was measured by the universal testing machine. RESULTS AND CONCLUSION: 1. Zi-Ceram group with Superbond C&B cement showed higher bond strength than with Panavia F cement regardless to the surface treatments (p<0.05). 2. In Zi-Ceram group with Superbond C&B cement, sandblasting treatment group (12.1MPa) showed higher bond strength than diamond bur treatment group (7.7MPa) (p<0.05). In Zi-Ceram group with Panavia F cement, there were no significant differences in the bond strength according to the surface treatments (p>0.05). 3. Zi-Ceram group with sandblasting and Superbond C&B cement (12.1MPa) showed the highest bond strength. The bond strength of this group was not significantly different from In-Ceram ALUMINA group (10.4MPa) (p>0.05) and lower than IPS Empress 2 group (15.9MPa) (p<0.05).
Aluminum Oxide
;
Ceramics*
;
Dental Instruments
;
Resin Cements*
;
Water