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Suboptimal Management Status of Younger Hypertensive Population in Korea
Hae-Young Lee,Gyu Chul Oh,Il Suk Sohn,Sungha Park,Jinho Shin,Wook Bum Pyun,Myeong-Chan Cho 대한심장학회 2021 Korean Circulation Journal Vol.51 No.7
Background and Objectives: Hypertension (HTN) is the most contributable risk factor for cardiovascular disease. May Measurement Month (MMM) is a global initiative to raise awareness of HTN and act as a temporary solution to the lack of screening programs worldwide. Methods: An opportunistic cross-sectional survey of participants aged ≥18 was carried out in May 2019. Over 10,000 participants were recruited in the MMM 2019 Korea, with a slogan of “A simple measure to save lives – #checkyourpressure.”Results: A total of 9,950 participants with valid clinical blood pressure (BP) data were used for analysis. All participants were Korean in ethnicity. The mean age was 57.2±21.2 years, 57.8% were females, and the mean body mass index was 23.4±3.3 kg/m2. Among the enrolled population, 20.1% were less than 30 years old, and 5.0% were 30–39 years old. 37.0% of the participants reported a previous diagnosis of HTN, and 91.3% of those diagnosed were on antihypertensive medications. Notably, more than 20% of the participants had not measured their BP during the last 12 months, and the awareness rate in the young hypertensive participants (aged <40) was less than 10%. Among hypertensive participants, the treatment rate was 69.3%, and the control rate among those taking medications was 61.2%. Conclusion: MMM 2019 Korea campaign reported high BP control rates in individuals with HTN, reaching 60%. However, the awareness rate in young hypertensive participants was less than 10% along with suboptimal management status. The MMM 2019 Korea again raised the importance of regular BP measurement in the younger population.
An Advanced Constant Multiplier Structure for Multi-data-Path FFT in UWB
Daehyun Kim,Kwang-Eui Pyun,Hae-Wook Choi 대한전자공학회 2007 ITC-CSCC :International Technical Conference on Ci Vol.2007 No.7
UWB supports high data rate, so the architecture is considered normally for parallel operation. One of the high computation complexity modules is FFT/IFFT. To implement this FFT/IFFT module, parallel datapath is used, and multiplication operation is fulfilled in parallel also. This paper proposes a fine implementation method for this multiplier based on shifting and adding inputs which is called “constant units”, and the key idea is that adders needed the “constant units” for each datapath are shared. Using this shared adder method, it is possible to save the gate count by 17% and the power by 18% compared to the select-4-of-9-constant multiplier scheme which saves 38% of area compared to that of a normal multiplier.
박순찬,이덕희,류창우,Hae Wook Pyun,최충곤,김상준,서대철 대한뇌졸중학회 2014 Journal of stroke Vol.16 No.3
Background and Purpose The diagnostic accuracy for unruptured intracranial aneurysms has increased, and incidental asymptomatic aneurysms have come to represent a substantial clinical burden because of their controversial natural history. However, their prevalence may be attributable to variations in evaluation methods and demographics. We therefore describe the prevalence and magnetic resonance angiography (MRA) findings of incidental intracranial saccular aneurysms over a 5-year period at a single large-volume center. Methods MRA images from 18,237 patients obtained between January 2001 and December 2005 were retrieved from the radiology report database. Patients diagnosed with incidental intracranial saccular aneurysms were identified and their MRA data were reviewed. Imaging and clinical follow-up data were evaluated. Results During the study period, 366 incidental intracranial saccular aneurysms were identified in 330 patients (prevalence, 1.8%; 95% confidence interval, 1.63%-2.01%; 115 men and 215 women; age range, 22-82 years; median age, 63 years). The prevalence was higher in women (215/8,112) than in men (115/10,125; P=0.02). The prevalence increased with age in women (P<0.01), but not in men (P=0.30). Aneurysm size ranged from 1.5 mm to 13 mm, with a median size of 4 mm. The most common location was the bifurcation of the middle cerebral artery (131/366; 35.8%). Conclusions Our real world experience indicated a slightly lower overall prevalence of incidental intracranial saccular aneurysms than previously reported. The prevalence increased with age in women but not in men.
Unexpected Detachment of Solitaire Stents during Mechanical Thrombectomy
Kim, Sung Tae,Jin, Sung-Chul,Jeong, Hae Woong,Seo, Jung Hwa,Ha, Sam Yeol,Pyun, Hae Wook The Korean Neurosurgical Society 2014 Journal of Korean neurosurgical society Vol.56 No.6
Objective : Unexpected Solitaire stent detachment can occur during mechanical Solitaire thrombectomy. The purpose of this study was to retrospectively evaluate the influencing factors causing unexpected Solitaire stent detachment and the clinical outcomes. Methods : Between October 2011 to December 2013, 232 cases of mechanical Solitaire thrombectomy for acute ischemic stroke were performed in 3 stroke centers. During this period, we encountered unexpected Solitaire stent detachments during mechanical Solitaire thrombectomies in 9 cases. Results : Solitaire stents unexpectedly detached in 9 cases (3.9%) during the retrieval of Solitaire stents. The median patient age was 76 years. The occlusion sites of the unexpected stent detachment were the proximal middle cerebral artery (MCA) in 7 cases and the internal carotid artery in 2 cases. The sizes of the stents that unexpectedly detached were $6{\times}30$ mm in 7 cases, $5{\times}30$ mm in 1 case, and $4{\times}20$ mm in 1 case. Four patients had unexpected detachment at the first retrieval, 1 patient at the second, 3 patients at the third, and 1 patient at the fifth. In all of the cases of unexpected detachment at the first retrieval, the stent deployment site was the proximal MCA. After detachment, a proximal marker of the Solitaire stent was observed in 3 patients. However, no marker was visible in the remaining 6 patients. Conclusion : Unexpected Solitaire stent detachment should be considered in the first instance of stent retrieval for a relatively large-diameter stent, especially in elderly patients with MCA occlusions.
1995년과 2000년의 학동기와 2003년 학동전기 소아에서의 아토피피부염의 역학적 변화에 관한 전국적인 연구
오재원 ( Jae-Won Oh ),김규언 ( Kyu-Earn Kim ),편복양 ( Bok-Yang Pyun ),이혜란 ( Hae-Ran Lee ),정지태 ( Ji-Tae Choung ),홍수종 ( Soo-Jong Hong ),박강서 ( Kang-Seo Park ),이수영 ( Soo-Young Lee ),송상욱 ( Sang-Wook Song ),김철홍 ( C 대한소아알레르기호흡기학회 2003 소아알레르기 및 호흡기학회지 Vol.13 No.4
Objective : Atopic dermatitis is a chronically relapsing inflammatory skin disease. However, little is known about the prevalence of atopic dermatitis outside of North America and Europe. We evaluated the nationwide prevalence of atopic dermatitis with th
박지강,Dae Young Hong,Sun Tak Jin,Dong-Woo Lee,Hae Wook Pyun 대한자기공명의과학회 2020 Investigative Magnetic Resonance Imaging Vol.24 No.3
Purpose: A CT angiography spot sign (CTA-spot) is a significant predictor of the early expansion of an intracerebral hemorrhage (ICH-Ex). Dynamic-susceptibility-contrast magnetic resonance imaging (DSC-MRI) can track the real-time leaking of contrast agents. It may be able to indicate active bleeding, like a CTA-spot. Materials and Methods: From September 2014 to February 2017, we did noncontrast CT, CTA, and DSC-MRI examinations of seven patients with acute ICH. We investigated the time from symptom onset to the first contrast-enhanced imaging. We evaluated the time course of the contrast leak within the ICH at the source image of the DSC-MRI and the volume change of ICH between non-contrast CT and DSCMRI. We compared the number of slices showing CTA-spots and DSC-MRI leaks. Results: The CTA-spot and DSC-MRI leak-sign were present in four patients, and two patients among those showed ICH-Ex. The time from the symptom onset to CTA or DSC-MRI was shorter for those with a DSC-MRI leak or CTA-spot than for three patients without either (70-130 minutes vs. 135-270 minutes). The leak-sign began earlier, lasted longer, and spread to more slices in the patients with ICH-Ex than in those without ICH-Ex. The number of slices of the DSC-MRI leak and the number of the CTA-spot were well correlated. Conclusion: DSC-MRI can demonstrate the leakage of GBCA within hyperacute ICH, showing the good contrast between hematoma and contrast. The DSC-MRI leakage sign could be related to the hematoma expansion in patients with ICH.
Park, Ji Kang,Hong, Dae Young,Jin, Sun Tak,Lee, Dong-Woo,Pyun, Hae Wook Korean Society of Magnetic Resonance in Medicine 2020 Investigative Magnetic Resonance Imaging Vol.24 No.3
Purpose: A CT angiography spot sign (CTA-spot) is a significant predictor of the early expansion of an intracerebral hemorrhage (ICH-Ex). Dynamic-susceptibility-contrast magnetic resonance imaging (DSC-MRI) can track the real-time leaking of contrast agents. It may be able to indicate active bleeding, like a CTA-spot. Materials and Methods: From September 2014 to February 2017, we did non-contrast CT, CTA, and DSC-MRI examinations of seven patients with acute ICH. We investigated the time from symptom onset to the first contrast-enhanced imaging. We evaluated the time course of the contrast leak within the ICH at the source image of the DSC-MRI and the volume change of ICH between non-contrast CT and DSC-MRI. We compared the number of slices showing CTA-spots and DSC-MRI leaks. Results: The CTA-spot and DSC-MRI leak-sign were present in four patients, and two patients among those showed ICH-Ex. The time from the symptom onset to CTA or DSC-MRI was shorter for those with a DSC-MRI leak or CTA-spot than for three patients without either (70-130 minutes vs. 135-270 minutes). The leak-sign began earlier, lasted longer, and spread to more slices in the patients with ICH-Ex than in those without ICH-Ex. The number of slices of the DSC-MRI leak and the number of the CTA-spot were well correlated. Conclusion: DSC-MRI can demonstrate the leakage of GBCA within hyperacute ICH, showing the good contrast between hematoma and contrast. The DSC-MRI leakage sign could be related to the hematoma expansion in patients with ICH.
박승림(Seung Rim Park),조규정(Kyu Jung Cho),윤영현(Young Hyun Yun),이문(Moon Lee),강석봉(Seok Bong Kang),편해욱(Hae Wook Pyun),정세진(Se Jin Jung) 대한정형외과학회 2009 대한정형외과학회지 Vol.44 No.2
척추강 내 동정맥 루는 척추 동맥과 주변의 정맥과의 비정상적인 연결을 특징으로 하는 드문 혈관 질환이다. 이 동정맥 루는 형성되면서 척추체에 골용해를 일으켜 병변 주위로 통증이나 잡음을 유발한다. 또한 동정맥 루가 척수를 직접적으로 압박해서 척수병증을 일으킬 수 있으며, 도류 현상(steal phenomenon)으로 인한 이차적 허혈과 정맥성 고혈압에 의해서도 척수병증이 나타날 수 있다. 저자들은 제 5, 6번의 흉추 부위에서 척추강내 동정맥 루가 형성되고, 경막외 정맥과 연결된 기정맥(azygous vein)이 비정상적으로 커지면서 골용해를 유발하고 척수를 압박하여 신경학적 증상을 일으킨 거대한 척수강내 동정맥 루 1예를 경험하였으며, 80개의 코일을 이용하여 단계적 색전술을 시행하여 치료하였다. A spinal arteriovenous fistula is a rare vascular disease that is characterized by abnormal connections between the vertebral artery or its branches and the neighboring veins. Bruit and back pain are common symptoms related to the fistula. Spinal cord dysfunction can also occur as a result of blood flow steal, venous hypertension, or mechanical compression of the nerve roots and spinal cord. We report a huge arteriovenous fistula in the spinal canal at the thoracic vertebra, which was characterized by a large azygous vein connected to the epidural vein causing osteolysis on the vertebral body and spinal cord compression symptoms. Staged embolization was performed using 80 coils.