1.Contrast Echocardiography in two-dimensional left ventricular measurements: comparison with 256-row multi-detector computed tomography as a reference standard in Beagles
Jaehwan KIM ; Soyoung KIM ; Yeonhea LEE ; Hakyoung YOON ; Kidong EOM
Journal of Veterinary Science 2019;20(5):e45-
Unenhanced echocardiography (UE), commonly used in veterinary practice, is limited by left ventricular (LV) foreshortening and observer dependency. Contrast echocardiography (CE) was used to compare two-dimensional (2D) LV measurements made using UE and 256-row multi-detector computed tomography (MDCT) as a reference standard. Seven healthy beagle dogs were evaluated in this study. Measurements obtained using CE, including LV wall thickness, internal diameter, and longitudinal and transverse length, were significantly greater than those obtained using UE. Measurements of LV internal dimension in diastole (LVIDd) and systole (LVIDs) were significantly larger with CE compared UE. Regardless of the cardiac cycle, LV longitudinal (LVLd and LVLs) and transverse diameter (LVTDd and LVTDs) measurements were significantly different with CE and approximated values from MDCT. Among automatically calculated parameters, LV end-systolic volume and the relative wall thickness were significantly different between UE and CE. In CE, the correlation coefficients of 4 major parameters (r = 0.87 in LVIDd; 0.91 in LVIDs; 0.87 in LVLd; and 0.81 in LVLs) showed higher values compared to the UE (r = 0.68 in LVIDd, 0.71 in LVIDs, 0.69 in LVLd, and 0.35 in LVLs). Inter-observer agreement was highest for MDCT and higher for CE than UE. In conclusion, CE is more accurate and reproducible than UE in assessing 2D LV measurements and can overcome the limitations of UE including LV foreshortening and high observer dependency.
Animals
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Diastole
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Dogs
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Echocardiography
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Multidetector Computed Tomography
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Systole
2.The Choroidal Vascularity Indices of Treatment-Naïve Patients with Central Retinal Vein Occlusion and Age-/Sex-Matched Controls
Hye Jun JOO ; Hakyoung KIM ; Dae Joong MA ; Yongseok MUN
Journal of the Korean Ophthalmological Society 2023;64(1):35-42
Purpose:
To compare the subfoveal choroidal vascularity indices (CVIs) of treatment-naïve patients with central retinal vein occlusion (CRVO) with controls.
Methods:
Twenty-one eyes of 21 treatment-naïve CRVO patients and 42 age- and sex-matched control eyes (of 42 subjects) lacking any retinal disease were included. The subfoveal CVIs were measured using ImageJ software.
Results:
The mean subfoveal CVI in eyes with treatment-naïve CRVO at the initial visit was significantly higher than that of control eyes (0.6464 ± 0.0326 vs. 0.6209 ± 0.0434 respectively; p = 0.024). In contrast, no significant difference in the mean subfoveal CVI was found between CRVO eyes 6 months after initial diagnosis and control eyes (0.6311 ± 0.0600 vs. 0.6209 ± 0.0434 respectively; p = 0.238). Of the 21 eyes with CRVO, 18 (85.7%) received intravitreal injections (bevacizumab, ranibizumab, aflibercept, or triamcinolone) and four (19.0%) underwent panretinal photocoagulation.
Conclusions
The subfoveal CVI of eyes with treatment-naïve CRVO at the initial visit was significantly higher than that of control eyes, but decreased by 6 months. Further studies are needed to determine whether CRVO treatments such as intravitreal injection or panretinal photocoagulation affect choroid hemodynamics.
3.Chemoradiotherapy is not superior to radiotherapy alone after radical surgery for cervical cancer patients with intermediate-risk factor
Hakyoung KIM ; Won PARK ; Young Seok KIM ; Yeon Joo KIM
Journal of Gynecologic Oncology 2020;31(3):e35-
Objectives:
There is no consensus on whether giving adjuvant concurrent chemoradiotherapy (CCRT) is more effective than adjuvant radiotherapy (RT) alone in patients with early stage cervical cancer and intermediate-risk factor(s). The purpose of this study was to evaluate survival difference according to adjuvant treatment in the intermediate-risk group.
Methods:
From 2000 to 2014, the medical records of patients with stage IB–IIA cervical cancer and a history of radical hysterectomy with pelvic lymph node dissection, followed by pelvic RT at a dose ≥40 Gy were retrospectively reviewed. Among these, 316 patients with one or more intermediate-risk factor(s) and no high-risk factors were included. The criteria defined the intermediate-risk group as those patients with any of the following intermediate-risk factors: lymphovascular space involvement, over one-half stromal invasion, or tumor size ≥4 cm.
Results:
The median follow-up duration was 70 months (range: 3–203 months). According to adjuvant treatment (adjuvant RT alone vs. adjuvant CCRT), the 5-year recurrence-free survival rates (90.8% vs. 88.9%, p=0.631) and 5-year overall survival rates (95.9% vs. 91.0%, p=0.287) did not show a significant difference in patients with any of the intermediate-risk factors. In multivariate analysis, a distinct survival difference according to adjuvant treatment was not found regardless of the number of risk factors.
Conclusion
The present study showed that giving RT together with chemotherapy is not more effective than RT alone for stage IB–IIA cervical cancer patients with intermediate-risk factor(s).
4.Long-term Outcomes of Vitrectomy Used to Treat Myopic Traction Maculopathy
Ho Chul YI ; Hakyoung KIM ; So Hyun BAE
Journal of the Korean Ophthalmological Society 2020;61(1):34-40
PURPOSE: We investigated the long-term outcomes of vitrectomy with internal limiting membrane (ILM) peeling as treatment for myopic traction maculopathy (MTM).METHODS: The medical records of patients who underwent vitrectomy to treat MTM were retrospectively evaluated. We excluded patients who exhibited macular holes (MHs) or retinal detachment at the time of primary surgery. The best-corrected visual acuity (BCVA) and central foveal thickness (CFT) were analyzed preoperatively, at 3, 6, 12, and 24 months after surgery, and at the final visit. Complications including retinal detachment or an MH were noted during follow-up.RESULTS: Twenty-three eyes of 22 patients were enrolled. At the time of primary surgery, the mean patient age was 64.4 ± 11.1 years and the baseline mean logMAR BCVA and CFT, 0.67 ± 0.50 and 431.8 ± 159.5 µm, respectively. The mean follow-up period was 53.7 ± 19.3 months. The mean logMAR BCVAs at 3, 6, 12, and 24 months postoperatively and at the final visit were 0.42 ± 0.39 (p = 0.001), 0.41 ± 0.38 (p = 0.001), 0.39 ± 0.40 (p < 0.001), 0.42 ± 0.43 (p < 0.001), and 0.51 ± 0.47 (p = 0.016), respectively, thus significantly better than the baseline value. The mean CFT at 3, 6, 12, and 24 months postoperatively and at the final visit were 244.6 ± 72.3, 210.5 ± 79.1, 209.6 ± 91.6, 219.8 ± 93.9, and 217.7 ± 81.3 µm, respectively, thus significantly less than baseline (all p < 0.001). MTM resolved in 18 eyes (78.3%) after primary surgery, without any complication, and remained stable to the final visit.CONCLUSIONS: Vitrectomy with ILM peeling afforded favorable long-term efficacy and safety in MTM patients.
Follow-Up Studies
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Humans
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Medical Records
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Membranes
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Myopia, Degenerative
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Prognosis
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Retinal Detachment
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Retinal Perforations
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Retinoschisis
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Retrospective Studies
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Traction
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Visual Acuity
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Vitrectomy
5.Successful treatment of a severe open wound in a raccoon dog (Nyctereutes procyonoides): antibiotic susceptibility testing supported
Myeongsu KIM ; Haerin RHIM ; Seulgi GIM ; Chang-Eun LEE ; Hakyoung YOON ; Jae-Ik HAN
Korean Journal of Veterinary Research 2023;63(3):e29-
An adult raccoon dog with extensive, deep, and contaminated wounds on the right hip and multiple fractures was rescued. The open wound was managed daily by debridement and flushing for 3 weeks. Modified active drainage was then performed, and antibiotics administered according to the antibiotic susceptibility test. After 2 weeks, the exudate disappeared and the drain was removed. After monitoring for 1 month, the animal was released in to the wild. This case shows that even if infection remains, rapid wound repair is possible if appropriate antibiotic selection through regular examination and active drainage are combined.
6.Evaluation of improved transvenous heartworm extraction brush in dogs with caval syndrome
Jihyun KIM ; Junemoe JEONG ; Kanghyo PARK ; Kyoungin SHIN ; In Sung JANG ; Hakyoung YOON
Journal of Veterinary Science 2023;24(4):e46-
Background:
Heartworm infection in dogs is caused by Dirofilaria immitis and common in shelter animals and outdoors dogs. Caval syndrome can develop with severe infection and physical heartworm removal is essential with heartworm burdens. In this study, we used an improved transvenous heartworm extraction brush, which was expected to cause less cardiovascular damage and allow easier manipulation.
Objectives:
This study aims to evaluate efficacy of this improved transvenous heartworm extraction brush.
Methods:
The brush was designed to improve upon the limitations of the previous brushtype devices. The brush was made of a polyvinyl chloride tube and threads of polyamides or polyglyconates. Metal material was inserted at the front tip for easy visualization under fluoroscopy. The eight dogs diagnosed with caval syndrome with large numbers of heartworms and pulmonary hypertension were used in this study. The removal procedure began with the dissection of the subcutaneous tissue around the right jugular vein. The device was inserted through the jugular vein. After insertion, the tube was rotated to catch the heartworms and extracted with the heartworms hanging on the threads. The procedure was repeated several times. Lastly, jugular vein and skin sutures were made. Adulticidal therapy was administered after heartworm removal.
Results:
The mean number of removed heartworms was 10.5 ± 4.24 and mean number of remaining heartworms was 0.63 ± 1.06. Total procedure time was 72.63 ± 51.36. Except for three cases, heartworms were not detected on ultrasonography after the procedure. No procedure-related side effects were observed within the 1- to 2-mon.
Conclusions
An improved transvenous heartworm extraction brush is efficient for heartworm removal in dogs with caval syndrome.
7.Ectopic insulinoma in a dog with insulin-induced hypoglycemia: a case report
Jiwon KIM ; Insun HWANG ; Danbee KWON ; Kanghyo PARK ; Hakyoung YOON
Journal of Veterinary Science 2023;24(3):e39-
A 7-year-old spayed female Shih Tzu dog was presented for evaluation of recurrent hypoglycemia. Serum insulin levels during hypoglycemia were 35.3 μIU/mL. Ultrasonography and computed tomography showed a mesenteric nodule between the kidney and the portal vein, but no pancreatic mass was observed. During surgery, the nodule had neither anatomical adhesions nor vascular connections to the pancreas. Pancreatic inspection and palpation revealed no abnormalities. Hypoglycemia improved after resection of the nodule.Histopathological examination confirmed the nodule to be an islet cell carcinoma. Although extremely rare, ectopic insulinoma should be considered as a possible cause of insulininduced hypoglycemia in dogs.
8.Effect of bathing on atopic dermatitis during the summer season
Hakyoung KIM ; Jeongsuk BAN ; Mi Ran PARK ; Do Soo KIM ; Hye Young KIM ; Youngshin HAN ; Kangmo AHN ; Jihyun KIM
Asia Pacific Allergy 2012;2(4):269-274
BACKGROUND: There are little objective data regarding the optimal practice methods of bathing, although bathing and the use of moisturizers are the most important facets to atopic dermatitis (AD) management. OBJECTIVE: We performed this study to evaluate the effect of bathing on AD. METHODS: Ninety-six children with AD were enrolled during the summer season. Parents were educated to bathe them once daily with mildly acidic cleansers, and to apply emollients for 14 days. Parents recorded the frequency of bathing and skin symptoms in a diary. Scoring AD (SCORAD) scores were measured at the initial and follow-up visits. Patients were divided into two groups, based on the compliance of bathing; poor compliance was defined as ≥ 2 bathless days. RESULTS: There was an improvement of SCORAD score, itching, and insomnia in the good compliance group (all p < 0.001). The mean change in SCORAD score from the baseline at the follow-up visit was greater in the good compliance group than the poor compliance group (p = 0.038). CONCLUSION: Daily bathing using weakly acidic syndets can reduce skin symptoms of pediatric AD during the summer season.
Baths
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Child
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Compliance
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Dermatitis, Atopic
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Detergents
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Education
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Emollients
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Follow-Up Studies
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Humans
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Parents
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Pruritus
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Seasons
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Skin
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Skin Care
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Sleep Initiation and Maintenance Disorders
9.Can we omit prophylactic inguinal nodal irradiation in anal cancer patients?.
Hakyoung KIM ; Hee Chul PARK ; Jeong Il YU ; Doo Ho CHOI ; Yong Chan AHN ; Seung Tae KIM ; Joon Oh PARK ; Young Suk PARK ; Hee Cheol KIM
Radiation Oncology Journal 2015;33(2):83-88
PURPOSE: To evaluate the appropriateness of prophylactic inguinal nodal irradiation (PINI), we analyzed patterns of failure in anal cancer patients who were inguinal node-negative at presentation and did not receive PINI. MATERIALS AND METHODS: We retrospectively reviewed the records of 33 anal cancer patients treated by definitive concurrent chemoradiation therapy (CCRT) between 1994 and 2013. Radiotherapy consisted of a total dose of 44-45 Gy (22-25 fractions in 5 weeks) on the whole pelvis, anus, and perineum. Except inguinal lymphadenopathy was present at initial diagnosis, the entire inguinal chain was not included in the radiation field. In other words, there was no PINI. RESULTS: The median follow-up duration was 50 months (range, 4 to 218 months). Median survival and progression-free survival (PFS) were 57 months (range, 10 to 218 months) and 50 months (range, 4 to 218 months), respectively. Among the survival, the median follow-up duration was 51 months (range, 12 to 218 months). The 5-year overall survival and PFS rates were 93.4% and 88.8%, respectively. Although none of the patients received inguinal node irradiation for prophylactic purposes, there was no inguinal recurrence. CONCLUSION: Treatment of anal cancer by omitting PINI might be considered in selected patients with clinically uninvolved inguinal nodes.
Anal Canal
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Anus Neoplasms*
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Diagnosis
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Disease-Free Survival
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Follow-Up Studies
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Humans
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Lymph Nodes
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Lymphatic Diseases
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Pelvis
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Perineum
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Radiotherapy
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Recurrence
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Retrospective Studies
10.Can we omit prophylactic inguinal nodal irradiation in anal cancer patients?.
Hakyoung KIM ; Hee Chul PARK ; Jeong Il YU ; Doo Ho CHOI ; Yong Chan AHN ; Seung Tae KIM ; Joon Oh PARK ; Young Suk PARK ; Hee Cheol KIM
Radiation Oncology Journal 2015;33(2):83-88
PURPOSE: To evaluate the appropriateness of prophylactic inguinal nodal irradiation (PINI), we analyzed patterns of failure in anal cancer patients who were inguinal node-negative at presentation and did not receive PINI. MATERIALS AND METHODS: We retrospectively reviewed the records of 33 anal cancer patients treated by definitive concurrent chemoradiation therapy (CCRT) between 1994 and 2013. Radiotherapy consisted of a total dose of 44-45 Gy (22-25 fractions in 5 weeks) on the whole pelvis, anus, and perineum. Except inguinal lymphadenopathy was present at initial diagnosis, the entire inguinal chain was not included in the radiation field. In other words, there was no PINI. RESULTS: The median follow-up duration was 50 months (range, 4 to 218 months). Median survival and progression-free survival (PFS) were 57 months (range, 10 to 218 months) and 50 months (range, 4 to 218 months), respectively. Among the survival, the median follow-up duration was 51 months (range, 12 to 218 months). The 5-year overall survival and PFS rates were 93.4% and 88.8%, respectively. Although none of the patients received inguinal node irradiation for prophylactic purposes, there was no inguinal recurrence. CONCLUSION: Treatment of anal cancer by omitting PINI might be considered in selected patients with clinically uninvolved inguinal nodes.
Anal Canal
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Anus Neoplasms*
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Diagnosis
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Disease-Free Survival
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Follow-Up Studies
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Humans
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Lymph Nodes
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Lymphatic Diseases
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Pelvis
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Perineum
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Radiotherapy
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Recurrence
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Retrospective Studies