1.Ultrasonog raphic Findings of Esophageal Varices.
Hyo Seouk KANG ; Byeong Ryong SEOL ; Seung Woon RHA
Journal of the Korean Radiological Society 1999;40(5):937-939
PURPOSE: To demonstrate the clinical usefulness of ultrasonography for detecting esophageal varices. MATERIALS AND METHODS: In 20 cases of esophaged varix, the authors analysed the transabdominal ultrasono-graphicfindings of the esophagogastric junction and compared mural thickness, the anteroposterior diameter of theesophagus, and the echogenic nature of the esophageal mucosal layer with those of 78 normal patients. RESULTS:The anterior and posterior mural thickeness of normal esophagus was 2.2 +/-0.7 and 2.4 +/-0.8mm re-spectively, butfor variceal esophagus, the corresponding readings were 5.9 +/-1.3 and 5.2 +/-1.3mm respective-ly. Theanteroposterior diameter of normal esophagus was 7.9 +/-2.1mm and that of variceal esophagus was 1 4 . 0 +/-1.8mm.There was a stastically significant difference (p<0.01) in mural thickness and anteroposterior diameter of theesophagus between a normal and variceal patient with regard to change of echogenic nature at the esphagogastricjunction. Normal esophageal mucosa showed a thin and uniform echogenic line, but for variceal mucosa, theechogenic pattern was irregular, tortuous and thick. CONCLUSION: The athors believe that transabdominal US ishelpful for detecting esophageal varices in patients with liver cirrhosis and UGI bleeding. Important clinicallyuseful sonographic findings in diagnosing e-sophageal varix are as follows: 1) mural thickness more than 6mm; 2)anteroposterior diameter of the esopha-gus of more than 15mm; 3) irregular, tortuous and thickened echogenicmucosa.
Esophageal and Gastric Varices*
;
Esophagogastric Junction
;
Esophagus
;
Hemorrhage
;
Humans
;
Liver Cirrhosis
;
Mucous Membrane
;
Reading
;
Ultrasonography
;
Varicose Veins
2.Acute Type B Aortic Dissection in a Patient with Previous Endovascular Abdominal Aortic Aneurysm Repair.
Sung Hun PARK ; Seung Woon RHA
Vascular Specialist International 2017;33(1):43-46
Endovascular aortic repair (EVAR) was relatively safe, and became a widely performed procedure. If aortic dissection (AD) occurred in patient with previous EVAR, it could cause fatal complications like endograft collapse. Surgical treatment was limited in this situation for comorbidities and complex anatomies. Here we report a rare case of acute type B AD developed following trans-radial coronary intervention in a patient with previous EVAR of abdominal aortic aneurysm, which was treated with thoracic EVAR.
Aneurysm
;
Aorta
;
Aortic Aneurysm, Abdominal*
;
Comorbidity
;
Endovascular Procedures
;
Humans
3.Proximal Protected Carotid Artery Stenting and Neurologic Intolerance: Can We Predict before Stenting?
Korean Circulation Journal 2018;48(3):230-232
No abstract available.
Carotid Arteries
;
Stents
7.Impact of Insulin Resistance on Acetylcholine-Induced Coronary Artery Spasm in Non-Diabetic Patients.
Kwan Woo KANG ; Byoung Geol CHOI ; Seung Woon RHA
Yonsei Medical Journal 2018;59(9):1057-1063
PURPOSE: Coronary artery spasm (CAS) and diabetes mellitus (DM) are implicated in endothelial dysfunction, and insulin resistance (IR) is a major etiological cause of type 2 DM. However, the association between CAS and IR in non-diabetic individuals has not been elucidated. The aim of the present study was to evaluate the impact of IR on CAS in patients without DM. MATERIALS AND METHODS: A total of 330 eligible patients without DM and coronary artery disease who underwent acetylcholine (Ach) provocation test were enrolled in this study. Inclusion criteria included both hemoglobin A1c < 6.0% and fasting glucose level < 110 mg/dL without type 2 DM. Patients were divided into quartile groups according the level of homeostasis model assessment of insulin resistance (HOMA-IR): 1Q (n=82; HOMA-IR < 1.35), 2Q (n=82; 1.35≤HOMA-IR < 1.93), 3Q (n=83; 1.93≤HOMA-IR < 2.73), and 4Q (n=83; HOMA-IR≥2.73). RESULTS: In the present study, the higher HOMA-IR group (3Q and 4Q) was older and had higher body mass index, fasting blood glucose, serum insulin, hemoglobin A1c, total cholesterol, and triglyceride levels than the lower HOMA-IR group (1Q). Also, poor IR (3Q and 4Q) was considerably associated with frequent CAS. Compared with Q1, the hazard ratios for Q3 and Q4 were 3.55 (95% CI: 1.79–7.03, p < 0.001) and 2.12 (95% CI: 1.07–4.21, p=0.031), respectively, after adjustment of baseline risk confounders. Also, diffuse spasm and accompanying chest pain during Ach test were more strongly associated with IR patients with CAS. CONCLUSION: HOMA-IR was significantly negatively correlated with reference diameter measured after nitroglycerin and significantly positively correlated with diffuse spasm and chest pain.
Acetylcholine
;
Blood Glucose
;
Body Mass Index
;
Chest Pain
;
Cholesterol
;
Coronary Artery Disease
;
Coronary Vessels*
;
Diabetes Mellitus
;
Fasting
;
Glucose
;
Homeostasis
;
Humans
;
Insulin Resistance*
;
Insulin*
;
Nitroglycerin
;
Spasm*
;
Triglycerides
8.Hybrid Transvaginal Gastro-Endoscopic Nephrectomy in a Porcine Model.
Wooju JEONG ; Sung Yul PARK ; Sang Woon KIM ; Koon Ho RHA ; Seung Choul YANG ; Woong Kyu HAN
Korean Journal of Urology 2009;50(5):505-507
This animal experimental study reports one case of hybrid transvaginal natural orifice transluminal endoscopic surgery (NOTES) for nephrectomy. We performed a nephrectomy through a transvaginal access and 2 additional 5 mm trocars in the abdomen by using the keyhole technique. The specimen was removed through the vaginal tract. The total procedure time was 102 minutes. There were no intraoperative complications.
Abdomen
;
Animal Experimentation
;
Chimera
;
Gastroscopy
;
Intraoperative Complications
;
Laparoscopy
;
Natural Orifice Endoscopic Surgery
;
Nephrectomy
;
Surgical Instruments
;
Vagina
9.Optical Coherence Tomography and Stent Boost Imaging Guided Bioresorbable Vascular Scaffold Overlapping for Coronary Chronic Total Occlusion Lesion.
Hu LI ; Seung Woon RHA ; Cheol Ung CHOI ; Dong Joo OH
Yonsei Medical Journal 2017;58(5):1071-1074
We report herein the optical coherence tomography (OCT) and stent boost imaging guided bioresorbable vascular scaffold (BVS) implantation for right coronary artery (RCA) chronic total occlusion (CTO) lesion. The gold standard for evaluating BVS expansion after percutaneous coronary intervention is OCT. However, stent boost imaging is a new technique that improves fluoroscopy-based assessments of stent overlapping, and the present case shows clinical usefulness of OCT and stent boost imaging guided ‘overlapping’ BVS implantation via antegrade approach for a typical RCA CTO lesion.
Coronary Vessels
;
Percutaneous Coronary Intervention
;
Stents*
;
Tomography, Optical Coherence*
10.A Case of Successful Treatment of Huge Pseudoaneurysm Complicated with Endovascular Intervention Using Thrombin Injection.
Sang Ho PARK ; Seung Woon RHA ; Jin Soo BYON
Journal of the Korean Society for Vascular Surgery 2013;29(3):109-112
Iatrogenic femoral pseudoaneurysm (IPA) is a troublesome complication related to the femoral arterial access site used for invasive cardiovascular procedures. Several therapeutic strategies have been developed to treat this complication. They include surgical repair, ultrasound-guided compression repair, and minimally invasive percutaneous treatments (thrombin injection, coil embolization, and insertion of covered stents). Traditionally, surgical repair has been the main treatment for IPA, particularly when the size of the pseudoaneurysm is larger than 4 cm or when anticoagulation or GP-IIb/IIIa inhibitors are extensively used during the procedure. However, if the site of the pseudoaneurysm, such as deep femoral artery, was more deeply located, thrombin injection might be simpler or more useful compared to surgical ligation. Here, we report the successful treatment of huge IPA by percutaneous thrombin injection in a case complicated with giant pseudoaneurysm of deep femoral artery after the endovascular intervention for peripheral arterial occlusive disease.
Aneurysm, False
;
Arterial Occlusive Diseases
;
Femoral Artery
;
Ligation
;
Thrombin