1.Long-term Outcomes of Bilateral Lateral Rectus Recession Using a Modified Normogram for Targeting Small Overcorrection in Intermittent Exotropia
Sanghyuk AHN ; Daniel Jinhag BAIK ; Seung-Hyun KIM
Korean Journal of Ophthalmology 2024;38(5):392-398
Purpose:
To evaluate the surgical outcomes of a modified normogram for bilateral lateral rectus recession in the surgical management of intermittent exotropia, with a focus on achieving small overcorrection.
Methods:
A retrospective medical chart review of 242 patients who underwent surgery for intermittent exotropia between October 2014 and June 2020 was performed. Our modified normogram reducing amount of recession targeted for small postoperative overcorrection within 5 prism diopters (PD). Patients were observed for at least 3 years. Esodeviation was denoted by negative numbers and positive values indicated exodeviation. A satisfactory outcome was defined as if distant angle of deviation ranged between ≤10 PD of exotropia and ≤5 PD of esotropia. Recurrence was defined as an exodeviation of >10 PD at distance. Overcorrection was defined as an esodeviation of >5 PD at distance.
Results:
The mean preoperative deviation angles were 29.32 ± 3.92 PD at distance and 29.88 ± 4.41 PD at near. At postoperative day 1, the mean deviation angles at distance and near were –6.22 ± 1.44 and –6.22 ± 1.49 PD, respectively. Overcorrection within 6 PD of esodeviation was seen in 168 patients (69.42%), undercorrection with exophoria was noted in 11 patients (4.55%), and overcorrection by more than 6 PD of esodeviation was seen in 63 patients (26.03%) at postoperative day 1. The long-term success rate at postoperative 3 years was 77.27% (187 of 242), with a recurrence rate of 19.83% (48 of 242) and an overcorrection rate of 2.89% (7 of 242). A positive correlation between the angle of deviation at postoperative day 1 and 3 years was observed (r = 0.22, p = 0.001). The final success rate at the final examination after a mean follow-up of 38.60 ± 7.99 months was 83.06%.
Conclusions
Our modified normogram for bilateral lateral rectus recession in intermittent exotropia surgery resulted in successful surgical outcomes with small overcorrection, reducing the risk of consecutive esotropia due to excessive overcorrection.
2.Reliability and Validity of a Tablet-Based Neuropsychological Test (the Hellocog) for Screening Dementia
Daniel Hahnsam SEOK ; Hee Won YANG ; Ji Won HAN ; Jin Hwan LIM ; Seon Hyeok KIM ; Eun Young KIM ; Ki Woong KIM
Psychiatry Investigation 2024;21(6):655-663
Objective:
To address the gap in timely diagnosis of dementia due to limited screening tools, we investigated the validity and reliability of the Hellocog, computerized neuropsychological test based on tablets for screening dementia. The higher the probability score on the Hellocog, the higher the likelihood of dementia.
Methods:
This study included 100 patients with dementia and 100 individuals with normal cognition who were aged 60 years or older and free of other major psychiatric, neurological, or medical conditions. They administered the Hellocog on a tablet under the supervision of a neuropsychologist. To determine test-retest reliability, 20 took the Hellocog again after 4 weeks. Diagnostic performance was assessed using the receiver operator characteristics (ROC) analysis.
Results:
The Hellocog showed adequate internal consistency (Cronbach’s alpha=0.69) and good test-retest reliability (intraclass correlation coefficient=0.86, p<0.001). Participants with dementia scored higher on the Hellocog than those with normal cognition (p<0.001), confirming its high criterion validity. Strong correlations with the Mini-Mental Status Examination (MMSE) score and the total score of the Consortium to Establish a Registry for Alzheimer’s Disease Neuropsychological Assessment Battery (CERAD-TS) highlight the concurrent validity of the Hellocog. The area under the ROC curve for dementia of the Hellocog was excellent (0.971) and comparable to that of the MMSE and CERAD-TS. The sensitivity and specificity for dementia were 0.945 and 0.872%, respectively, which were slightly better than those of the MMSE and CERAD-TS.
Conclusion
Hellocog stands out as a valid and reliable tool for self-administered dementia screening, with promise for improving early detection of dementia.
3.Life satisfaction and self-efficacy of undergraduate occupational therapy students in a university in Metro Manila: A cross-sectional study
Kim Gerald Medallon ; Charles Bermejo ; Cesar Joseph Lim ; Miria Olivia Isabel Alvior ; Daniel Miguel Batain ; Chasid Bautista ; Karissa Anne Lee ; Maria Louise Abigail Morales ; Quincy Aaliyah Torre
Philippine Journal of Allied Health Sciences 2023;7(1):29-42
Background:
The COVID-19 pandemic has significantly disrupted students' lives and daily routines, resulting in increased stress and mental health
issues that impact their perceived life satisfaction and self-efficacy. While life satisfaction and self-efficacy may influence student academic
performance and success, current data on life satisfaction and self-efficacy in Filipino occupational therapy students is limited. Objectives: This
study aims to describe the life satisfaction and self-efficacy level of occupational therapy students at a university in Metro Manila, Philippines, during
the COVID-19 pandemic and explore the relationship between these two variables.
Methods:
The study adopted an analytic cross-sectional study
design and records review methodology utilizing the Student Life Survey 2021 database. Data from the survey participants who fit the study's
inclusion criteria were extracted to determine their life satisfaction and self-efficacy based on their responses on the Satisfaction with Life Scale and
Self-Efficacy Formative Questionnaire. Descriptive statistics using measures of central tendency and dispersion were used to analyze data.
Spearman-Rho correlation analysis was performed to examine the correlation between participants’ life satisfaction and self-efficacy.
Results:
A total of 205 occupational therapy students completed the survey. Results reveal that the participants were slightly dissatisfied with their lives
(M=18.45; SD=1.52) and that they had satisfactory or adequate self-efficacy (M=64.66; SD=1.37). An analysis of their self-efficacy scores reveals that
participants had a poor belief in their personal ability (M=37.71; SD=1.33) and a satisfactory or adequate belief that their ability can grow with
effort (M=26.92; SD=1.32). Life satisfaction and self-efficacy were found to decrease as the participants’ year level increased. Furthermore,
correlation analysis revealed a statistically significant moderate correlation between participants’ life satisfaction and self-efficacy (⍴=0.40, p<0.05).
Conclusion
The participants have a slightly dissatisfied level of life satisfaction and a satisfactory or adequate level of self-efficacy during the
COVID-19 pandemic. Life satisfaction and self-efficacy were found to have moderate correlation. Online learning adjustments, pandemic
restrictions, and societal expectations are factors that may have influenced these findings, as emphasized in existing studies. This study may inform
the academe in modifying existing learning environments and providing enhancement programs to deliberately target these constructs influencing
overall academic performance.
Self Efficacy
4.The Feasibility of Multiple Fixation Points in C2
Quyen Nguyen NGOC ; K. Daniel RIEW ; So Min LEE ; Sang-Min PARK ; Ho-Joong KIM ; Bong-Soon CHANG ; Sang-Hun LEE ; Jae Chul LEE ; Jin S. YEOM
Asian Spine Journal 2023;17(5):888-893
Methods:
We used 1.0-mm interval computed tomographic scan images of 100 patients (50 men and 50 women) and screw trajectory simulation software. The diameter of all screws was set at 3.5 mm, considering its common usage in real surgery. The anatomical feasibility of placing both pedicle and laminar screws on the same side was evaluated. For all feasible sides, the three-dimensional distance between the screw entry points was measured.
Results:
In 85% of cases, both pedicle and laminar screws could be placed on both sides, allowing for the insertion of 4 screws. In 11% of cases, 2 screws could be placed on one side, while only 1 screw was feasible on the other side, resulting in the placement of 3 screws. In all 181 sides where both types of screws could be inserted, the distance between their entry points exceeded 16.1 mm, which was sufficient to prevent the collision between the screw heads.
Conclusions
C2 vertebra can accommodate three (11%) or four (85%) screws in 96% of cases.
5.Do Magnets Have the Potential to Serve as a Stabilizer for the Shoulder Joint in Massive Rotator Cuff Tears?: A Biomechanical Cadaveric Study
Yoon Sang JEON ; Sang Hyun KO ; Yun Moon JEON ; Dong Jin RYU ; Jeong Seok KIM ; Hyun Soon PARK ; Min-Shik CHUNG ; Daniel KWAK ; Michelle H. MCGARRY ; Thay Q. LEE
Clinics in Orthopedic Surgery 2023;15(4):616-626
Background:
Disruption of the rotator cuff muscles compromises concavity compression force, which leads to superior migration of the humeral head and loss of stability. A novel idea of using the magnetic force to achieve shoulder stabilization in massive rotator cuff tears (MRCTs) was considered because the magnets can stabilize two separate entities with an attraction force. This study aimed to investigate the biomechanical effect of the magnetic force on shoulder stabilization in MRCTs.
Methods:
Seven fresh frozen cadaveric specimens were used with a customized shoulder testing system. Three testing conditions were set up: condition 1, intact rotator cuff without magnets; condition 2, an MRCT without magnets; condition 3, an MRCT with magnets. For each condition, anterior-posterior translation, superior translation, superior migration, and subacromial contact pressure were measured at 0°, 30°, and 60° of abduction. The abduction capability of condition 2 was compared with that of condition 3.
Results:
The anterior-posterior and superior translations increased in condition 2; however, they decreased compared to condition 2 when the magnets were applied (condition 3) in multiple test positions and loadings (p <0.05). Abduction capability improved significantly in condition 3 compared with that in condition 2, even for less deltoid loading (p < 0.05).
Conclusions
The magnet biomechanically played a positive role in stabilizing the shoulder joint and enabled abduction with less deltoid force in MRCTs. However, to ensure that the magnet is clinically applicable as a stabilizer for the shoulder joint, it is necessary to thoroughly verify its safety in the human body and to conduct further research on technical challenges.
6.The Use of Phentermine for Obesity in Psychiatric Patients With Antipsychotics
Eunju KIM ; Daniel RIM ; Jeong-Hun SHIN ; Denise WONG ; Dong Wook KIM
Psychiatry Investigation 2023;20(9):799-807
Objective:
Phentermine is a commonly used weight-loss agent in the United States, but there is a little information about the use of phentermine for patients with obesity taking antipsychotic medications.
Methods:
We gathered 57 patients with obesity taking antipsychotic medications whose phentermine treatment was simultaneous with or after any type of antipsychotic exposure and collected data of clinical information, initial/follow-up anthropometric variables, and adverse events (AEs) for the 6-month study period.
Results:
In total, the mean body weight reduction (BWR) was 4.45 (7.04) kg, and the mean BWR percent (BWR%) was 3.92% (6.96%) at 6 months. Based on the response to phentermine, the patients were classified into two groups: the responder (n=25; BWR% ≥5%) and nonresponder (n=32; BWR% <5%) groups. The responder group’s mean BWR and BWR% were 10.13 (4.43) kg and 9.35% (4.09%), respectively, at 6 months. The responders had higher rates of anticonvulsant combination therapy (ACT; responder, 72.0% vs. non-responder, 43.8%; p=0.033) and a shorter total antipsychotic exposure duration (responder, 23.9 [16.9] months vs. non-responder, 37.2 [27.6] months; p= 0.039). After adjusting age, sex, and initial body weight, ACT maintained a significant association with phentermine response (odds ratio=3.840; 95% confidence interval: 1.082–13.630; p=0.037). In the final cohort, there was no report of adverse or new-onset psychotic symptoms, and the common AEs were sleep disturbances, dry mouth, and dizziness.
Conclusion
Overall, phentermine was effective and tolerable for patients with obesity taking antipsychotic medications, and ACT (predominantly topiramate) augmented the weight-loss effect of phentermine.
7.Impact of medical school responses during the COVID-19 pandemic on student satisfaction: a nationwide survey of US medical students
Isaac E. KIM JR. ; Daniel D. KIM ; Juliana E. KIM ; Elliott REBELLO ; David CHUNG ; Parker WOOLLEY ; Daniel LEE ; Brittany A. BORDEN ; Aaron WANG ; Douglas VILLALTA ; Agatha SUTHERLAND ; Sebastian DE ARMAS ; Matthew LIU ; Hannah KIM ; Grace Sora AHN ; Reed GEISLER ; Alexander YANG ; Bowon JOUNG ; John SLATE-ROMANO ; Michal RAJSKI ; Alison E. KIM ; Roxanne VREES ; Kristina MONTEIRO
Korean Journal of Medical Education 2022;34(2):167-174
Purpose:
Medical schools have faced various challenges in preparing their clinical students for the frontlines of a pandemic. This study investigated medical students’ satisfaction with their institutions during the coronavirus disease 2019 (COVID-19) pandemic with the intention of guiding educators in future public health crises.
Methods:
In this cross-sectional study surveying students in clinical rotations, the primary outcome was overall satisfaction regarding medical schools’ responses to the pandemic, and the four secondary outcomes were school communication, exposure to COVID-19, availability of personal protective equipment, and access to COVID-19 testing.
Results:
The survey was distributed to ten medical schools, of which 430 students responded for a response rate of 13.0%. While most students were satisfied (61.9%, n=266) with their schools’ response, more than one in five (21.9%, n=94) were dissatisfied. Among the four secondary outcomes, communication with students was most predictive of overall satisfaction.
Conclusion
In future crises, schools can best improve student satisfaction by prioritizing timely communication.
8.Appendiceal Visualization on 2-mSv CT vs. Conventional-Dose CT in Adolescents and Young Adults with Suspected Appendicitis: An Analysis of Large Pragmatic Randomized Trial Data
Jungheum CHO ; Youngjune KIM ; Seungjae LEE ; Hooney Daniel MIN ; Yousun KO ; Choong Guen CHEE ; Hae Young KIM ; Ji Hoon PARK ; Kyoung Ho LEE ;
Korean Journal of Radiology 2022;23(4):413-425
Objective:
We compared appendiceal visualization on 2-mSv CT vs. conventional-dose CT (median 7 mSv) in adolescents and young adults and analyzed the undesirable clinical and diagnostic outcomes that followed appendiceal nonvisualization.
Materials and Methods:
A total of 3074 patients aged 15–44 years (mean ± standard deviation, 28 ± 9 years; 1672 female) from 20 hospitals were randomized to the 2-mSv CT or conventional-dose CT group (1535 vs. 1539) from December 2013 through August 2016. A total of 161 radiologists from 20 institutions prospectively rated appendiceal visualization (grade 0, not identified; grade 1, unsure or partly visualized; and grade 2, clearly and entirely visualized) and the presence of appendicitis in these patients. The final diagnosis was based on CT imaging and surgical, pathologic, and clinical findings. We analyzed undesirable clinical or diagnostic outcomes, such as negative appendectomy, perforated appendicitis, more extensive than simple appendectomy, delay in patient management, or incorrect CT diagnosis, which followed appendiceal nonvisualization (defined as grade 0 or 1) and compared the outcomes between the two groups.
Results:
In the 2-mSv CT and conventional-dose CT groups, appendiceal visualization was rated as grade 0 in 41 (2.7%) and 18 (1.2%) patients, respectively; grade 1 in 181 (11.8%) and 81 (5.3%) patients, respectively; and grade 2 in 1304 (85.0%) and 1421 (92.3%) patients, respectively (p < 0.001). Overall, undesirable outcomes were rare in both groups. Compared to the conventional-dose CT group, the 2-mSv CT group had slightly higher rates of perforated appendicitis (1.1% [17] vs. 0.5% [7], p = 0.06) and false-negative diagnoses (0.4% [6] vs. 0.0% [0], p = 0.01) following appendiceal nonvisualization. Otherwise, these two groups were comparable.
Conclusion
The use of 2-mSv CT instead of conventional-dose CT impairs appendiceal visualization in more patients. However, appendiceal nonvisualization on 2-mSv CT rarely leads to undesirable clinical or diagnostic outcomes.
9.Recombinant proteins of spike protein of SARS-CoV-2 with the Omicron receptor-binding domain induce production of highly Omicron-specific neutralizing antibodies
Hyangju KANG ; Daniel KIM ; Kyungmin MIN ; Minhee PARK ; Seok-Hyun KIM ; Eun-Ju SOHN ; Bo-Hwa CHOI ; Inhwan HWANG
Clinical and Experimental Vaccine Research 2022;11(3):285-289
Various vaccines have been developed to fight severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus responsible for the coronavirus disease 2019 pandemic.However, new variants of SARS-CoV-2 undermine the effort to fight SARS-CoV-2. Here, we produced S proteins harboring the receptor-binding domain (RBD) of the Omicron variant in plants. Plant-produced S proteins together with adjuvant CIA09A triggered strong immune responses in mice. Antibodies in serum inhibited interaction of recombinant human angiotensinconverting enzyme 2 with RBD of the Omicron variant, but not RBD of other variants. These results suggest that antibodies induced by RBD of the Omicron variant are highly specific for the Omicron RBD, but not for that of other variants.
10.Global prevalence of depression and anxiety in patients with hepatocellular carcinoma: Systematic review and meta-analysis
Darren Jun Hao TAN ; Sabrina Xin Zi QUEK ; Jie Ning YONG ; Adithya SURESH ; Kaiser Xuan Ming KOH ; Wen Hui LIM ; Jingxuan QUEK ; Ansel TANG ; Caitlyn TAN ; Benjamin NAH ; Eunice TAN ; Taisei KEITOKU ; Mark D. MUTHIAH ; Nicholas SYN ; Cheng Han NG ; Beom Kyung KIM ; Nobuharu TAMAKI ; Cyrus Su Hui HO ; Rohit LOOMBA ; Daniel Q. HUANG
Clinical and Molecular Hepatology 2022;28(4):864-875
Background/Aims:
Depression and anxiety are associated with poorer outcomes in patients with hepatocellular carcinoma (HCC). However, the prevalence of depression and anxiety in HCC are unclear. We aimed to establish the prevalence of depression and anxiety in patients with HCC.
Methods:
MEDLINE and Embase were searched and original articles reporting prevalence of anxiety or depression in patients with HCC were included. A generalized linear mixed model with Clopper-Pearson intervals was used to obtain the pooled prevalence of depression and anxiety in patients with HCC. Risk factors were analyzed via a fractional-logistic regression model.
Results:
Seventeen articles involving 64,247 patients with HCC were included. The pooled prevalence of depression and anxiety in patients with HCC was 24.04% (95% confidence interval [CI], 13.99–38.11%) and 22.20% (95% CI, 10.07–42.09%) respectively. Subgroup analysis determined that the prevalence of depression was lowest in studies where depression was diagnosed via clinician-administered scales (16.07%;95% CI, 4.42–44.20%) and highest in self-reported scales (30.03%; 95% CI, 17.19–47.01%). Depression in patients with HCC was lowest in the Americas (16.44%; 95% CI, 6.37–36.27%) and highest in South-East Asia (66.67%; 95% CI, 56.68–75.35%). Alcohol consumption, cirrhosis, and college education significantly increased risk of depression in patients with HCC.
Conclusions
One in four patients with HCC have depression, while one in five have anxiety. Further studies are required to validate these findings, as seen from the wide CIs in certain subgroup analyses. Screening strategies for depression and anxiety should also be developed for patients with HCC.


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