1.Echocardiographic Preoperative Prediction of Prosthetic Aortic Valve Size in Patient with Aortic Valve Replacment.
Seung Won HAM ; Young Soon KIM ; Se Woong SEO ; Sung Gu KIM ; Young Joo KWON
Korean Circulation Journal 1987;17(3):411-417
Aortic root diameter by two dimensional and M-mode echocardiography in predicting prosthetic aortic valve size preoperatively was measured in 10 adult patients undergoing aortic valve replacement. Correlation of aortic root diameter measured by two dimensional echocardiography and actual prosthetic valve size implanted by aortic valve replacement was excellent. Correlation coefficient was statistically significant (r=0.91, P<0.001). Correlation of aortic root diameter measured by M-mode echocardiography and actual prosthetic valve size was also excellent. Correlation coefficient was statistically significant (r=0.86, P<0.001). This study demonstrates that aortic root diameter by two dimensional and M-mode echocardiography can accurately predict prosthetic aortic valve size in patient undergoing aortic valve replacement.
Adult
;
Aortic Valve*
;
Echocardiography*
;
Humans
2.OGILVIE`S SYNDROME AS A COMPLICATION AFTER THE BREAST RECONSTRUCTION WITH A TRAM FLAP.
Kwon JOO ; Ik Soo CHANG ; Sang Tae AHN ; Poong LIM ; Kee Sun HAM
Journal of the Korean Society of Plastic and Reconstructive Surgeons 1997;24(2):375-379
Acute colonic pseudoobstruction was first reported in 1948 by Sir H. Ogilvie. It is characterized by an acute, abrupt right-sided colonic distention in the absence of physical reasons for obstruction. If untreated, it may progress to cecal perforation, peritonitis, and death. Although primary cases have been reported, 87 percent of cases were secondary results of medical or surgical conditions. The most common medical conditions were infections, cardiac disease, and neurologic problems. In surgical conditions, cesarean section has been reported as the most common cause of Ogilvie's syndrome. In 1995, the first case of Ogilvie's syndrome complicated after a cosmetic surgical procedure(abdominoplasty) was reported by Bradley et al. We report a case of Ogilvie's syndrome complicated after breast reconstruction with TRAM flap that developed in the postoperative third day in 35-year old woman. The complications are primarily related to decreased flap perfusion. No reference of intestinal pseudoobstruction was found in the literature conducted in regard to complications of TRAM flap breast reconstruction.
Adult
;
Breast*
;
Cesarean Section
;
Colon
;
Colonic Pseudo-Obstruction
;
Female
;
Heart Diseases
;
Humans
;
Intestinal Pseudo-Obstruction
;
Mammaplasty*
;
Perfusion
;
Peritonitis
;
Pregnancy
3.Frontoparietal Cortical Thinning in Respiratory-Type Panic Disorder: A Preliminary Report.
Ho Kyoung YOON ; June KANG ; Do Young KWON ; Byung Joo HAM
Psychiatry Investigation 2016;13(1):146-151
OBJECTIVE: Many evidences raise the possibility that the panic disorder (PD) patients with respiratory subtype (RS) may have characteristic structural abnormalities. We aimed to explore the structural differences between PD patients with and without the respiratory symptoms. METHODS: Patients with PD were recruited from the Department of Psychiatry at Korea University Anam Hospital. Respiratory subtype (RS) was diagnosed when at least 4 out of 5 of the following respiratory symptoms were present during the panic attack: fear of dying, chest pain/discomfort, shortness of breath, paresthesias, and a choking sensation. We acquired high-resolution MRI scans and used FreeSurfer to obtain a measure of cortical thickness for each patient. RESULTS: Cluster based analysis revealed significantly decreased cortical thickness in the left hemisphere in the caudal-middle-frontal, superior frontal, and posterior parietal areas in the RS group. No significant difference was observed in any of the limbic areas. CONCLUSION: Respiratory symptoms of panic disorder were associated with a reduction in cortical thickness in the left frontal and parietal areas. This finding leads to the assumption that the frontoparietal network is the crucial component in a larger cortical network underlying the perception of dyspnea in RS.
Airway Obstruction
;
Dyspnea
;
Humans
;
Korea
;
Magnetic Resonance Imaging
;
Panic Disorder*
;
Panic*
;
Paresthesia
;
Rabeprazole
;
Sensation
;
Thorax
4.A study on the changes of bone mineral density during lactation.
Sung Keun ROH ; Sung Ho LIM ; Moon Yung KIM ; Eun Sung KIM ; Ho Won HAN ; In Kwon HAM
Korean Journal of Obstetrics and Gynecology 1993;36(7):2313-2318
No abstract available.
Bone Density*
;
Female
;
Lactation*
5.A study on the changes of bone mineral density during lactation.
Sung Keun ROH ; Sung Ho LIM ; Moon Yung KIM ; Eun Sung KIM ; Ho Won HAN ; In Kwon HAM
Korean Journal of Obstetrics and Gynecology 1993;36(7):2313-2318
No abstract available.
Bone Density*
;
Female
;
Lactation*
6.Causes of Decreased Visual Acuity after Vitrectomy for Diabetic Retinopathy.
Chang Hoon HAM ; Sung Chul LEE ; Oh Woong KWON
Journal of the Korean Ophthalmological Society 1996;37(8):1303-1308
We investigated the poor prognostic factors for trans pars plana vitrectomy in the complicated cases of proliferative diabetic retinopathy. A total of 150 eyes in 125 patients with complications of diabetic retinopathy were treated surgically. The postoperative visual acuity was decreased according to Snellen E chart compared to the preoperative in 53 eyes out of 150 eyes. The cases with poor visual outcomes are as follows; 4 cases with rubeosis iridis, 12 of 14 cases with retinal detachment involving three qua tors of the retina including the fovea, 6 cases with increased IOP(>21 mmHg) and 23 of 30 cases with chronic renal failure.
Diabetic Retinopathy*
;
Humans
;
Kidney Failure, Chronic
;
Retina
;
Retinal Detachment
;
Visual Acuity*
;
Vitrectomy*
7.A Case of Thrombotic Thrombocytopenic Purpura(TTP), Presenting Multiple Gross Infarction.
Kang Kon LEE ; Dong Suk HAM ; Young Chul YOUN ; Oh Sang KWON
Journal of the Korean Neurological Association 1996;14(2):645-649
Thrombotic thrombocytopenic purpura (TTP) is an uncommon disorder, frequently fatal, characterized by a pentad of thrombocytopenia, microangiopathic hemolytic anemia, fluctuating neurologic symptoms, fever, and renal disease. TTP is characterized by widespread noninflammatory thrombotic occlusions of arterioles and capillaries with material containing fibrin and platelets. Generally, gross infarct is rare in the patient with TTP. We present a case of TTP with multiple gross infarcts on brain CT scan. A 53-year-old-man was presented with left hemiparesis and confused mentality. On laboratory study, he had microangiopathic hemolytic anemia & thrombocytopenia. Brain CT showed multiple gross infarct areas in the right basal ganglia, right parietal lobe and right cerebellar hemisphere. When managing the patient with acute stroke syndrome, we should consider TTP as a diagnostic possibility for early proper treatment, even if CT scan of brain show multiple gross infarctions.
Anemia, Hemolytic
;
Arterioles
;
Basal Ganglia
;
Brain
;
Capillaries
;
Fever
;
Fibrin
;
Humans
;
Infarction*
;
Neurologic Manifestations
;
Paresis
;
Parietal Lobe
;
Purpura, Thrombotic Thrombocytopenic
;
Stroke
;
Thrombocytopenia
;
Tomography, X-Ray Computed
8.Effects of Eye Movements on Recognition in a Manipulated-Face Memory Task.
Keunsoo HAM ; Chuyeon PYO ; Seong Ho YOO ; Jihye KWON
Korean Journal of Legal Medicine 2015;39(4):120-126
We evaluated the effects of eye movements on facial feature recognition and memory retrieval. Thirty-eight participants learned the faces of five men, including features of the faces (eyes, nose, and mouth), and then performed a recognition memory task for partially manipulated versions of the faces. Bilateral eye movements, recognition accuracy, and mean fixation duration were evaluated. We observed differences in fixation durations for the manipulated features of the faces (eyes, F(3,78)=11.95, P<0.001; and mouth, F(3,78)=21.38, P<0.001). These findings demonstrate that eye movements have a functional role in learning and recognizing human faces. Furthermore, fixation durations increased for the manipulated facial features, suggesting that eye movements during recognition are not simply patterns produced during learning.
Eye Movements*
;
Humans
;
Learning
;
Male
;
Memory*
;
Mouth
;
Nose
9.Comparative study of transvaginal sonography and endoctyehy for endometrial cancer in postmenopausal women.
Keum Ho HAM ; Young Kyun SHIN ; Kae Hyun NAM ; Soon Gone LEE ; Kwon Hae LEE ; Tai Ho CHO
Korean Journal of Obstetrics and Gynecology 1993;36(7):1967-1977
No abstract available.
Endometrial Neoplasms*
;
Female
;
Humans
10.Effects of On-Campus and Off-Campus Smartphone Overdependence Prevention Programs Among University Students
Jeong Soon YU ; Ok Kyung HAM ; Myung Soon KWON
Asian Nursing Research 2022;16(4):215-223
Purpose:
The purpose of this article is to evaluate effects of self-determination theory-based on-campus and off-campus prevention programs on smartphone overdependence among university students.
Methods:
This was a pre-posttest quasi-experimental study with a nonequivalent control group (CG). Seventy-eight students were recruited as participants. They were allowed to choose either an experiment group (EG) or a CG. On-campus smartphone overdependence prevention program was provided to participants in experimental group 1 (EG1), while on-campus program combined with off-campus prevention camp was provided to those in experimental group 2 (EG2). Instruments used in this study included a smartphone overdependence self-diagnosis scale, a basic psychological needs scale, and a self-regulation ability scale. Data collection was performed at baseline, immediately after intervention, at 1 month and 3 months after intervention. Data were analyzed using mixed analysis of covariance. Focus group interview was performed for qualitative evaluation.
Results:
After the intervention, smartphone overdependence and basic psychological needs exhibited significant interactions between group and time. Smartphone overdependence scores decreased in EG1 and EG2 but increased in CG (F = 4.56, p = .001). Basic psychological needs improved in EG1 and EG2 but deteriorated in CG (F = 5.04, p = .009). Focus group interviews revealed that participants strived to control their smartphone usage through individual efforts and by interacting with new friends in college even after completing the program.
Conclusion
In this study, on-campus only program and combined intervention of on- and off-campus programs were both effective in maintaining and managing smartphone use. However, participants perceived that the off-campus program provided an opportunity to apply the theory learned in on-campus to the real world.