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P Wave Morphology as an Independent Predictive Value for Recurrence of Atrial Tachyarrhythmias
( Jae Joong Lee ),( Dae In Lee ),( Rho Seung Young ),( Yae Min Park ),( Jin Keun Jang ),( Whan Cheol Park ),( Jong Il Choi ),( Sang Weon Park ),( Young Hoon Kim ) 대한내과학회 2013 대한내과학회 추계학술발표논문집 Vol.2013 No.1
Introduction: This study was conducted to investigate the hypothesis that the P wave morphology characterized by amplitude and duration after ablation of atrial fibrillation (AF) is a useful predictor of recurrence of AF after catheter ablation. Method: One hundred one (76 male; 46.7 months of AF duration) patients with paroxysmal AF were included. Standard 12-lead electrocardiography was performed in all patients before and within 1-2 days after ablation. The amplitude (PA1) and duration (PD1) of P wave before and after (PA2, PD2) ablation were measured with a caliper in 12-lead ECGs and the difference between the two were defined as ΔPA and ΔPD, respectively. Recurrence was defined as any atrial tachyarrhythmias (ATs) longer than 30 seconds occurred after 3 months of blanking period. Results: During the follow-up of 31.4±3 months, 24% (24 out of 101) showed recurrence of ATs. The PA1 (1.45±0.50 vs 1.35±0.34mm, p=0.26), PA2 (1.36±0.37 vs 1.19±0.37 mm, p=0.063), and ΔPA (0.10±0.37 vs 0.16±0.23 mm, p=0.338) did not show significant difference between the recurrence group and the non-recurrence group. But in recurrence group, PD1 (105.3±14.1 vs 114.9±14.9 ms, p=0.006) was significantly shorter and PD2 (103.7±17.4 vs 89.9±13.0 ms, p=0.001) was significantly longer than those without recurrence, therefore, ΔPD (1.6±10.4 vs 24.9±11.8 ms, p=0.001) was significantly shorter in the recurrence group. Multivariate cox regression analysis showed diabetes (hazard ratio: 6.043; p=0.016; confidence interval: 1.406-25.968), structural heart diseases (hazard ratio: 2.30; p=0.098; confidence interval: 0.858-6.168), PA2 (hazard ratio: 2.906; p=0.044; confidence interval: 1.028-8.214), PD1 (hazard ratio: 0.961; p=0.019; confidence interval: 0.929-0.993), PD2 (hazard ratio: 1.053; p=0.001; confidence interval: 1.029-1.078), ΔPD (hazard ratio: 0.923; p=0.001; confidence interval: 0.903-0.945) were independently related to recurrence of ATs after ablation of paroxysmal AF. Conclusion: The P wave duration before and after ablation, and ΔPD was an independent risk factor for predicting recurrence after ablation of paroxysmal AF.
A New Short Stem with Dense Capsule and High Yielding Sesame Variety "Namback"
Churl Whan Kang,Dong Hwi Kim,Sung Woo Lee,Kang Bo Shim,Myoung Hwa Kang,Jin Kyong Kim,Jae Hwan Rho,Myung Kyu Oh,Hak Soo Byeon,In Jae Kim,Bum Yeul Ryu 한국육종학회 2002 한국육종학회지 Vol.34 No.4
A new sesame variety 'Namback'was developed at the National Crop Experiment Station through a cross between commercialiy utilized varieties of high yielding 'Danbackkae' and late seeding of second cropping daptable 'Chinjukkae' at 1989 and had been select
Park, Jong-Chul,Rho, Tae-Whan,Kim, Jung-Gon,Kim, Hyung-Moo,So, In-Young,Lee, Kui-Jae The Plant Resources Society of Korea 2007 한국자원식물학회지 Vol.20 No.6
A stable method for strain distinction using viral RNA 1 structures analyses was developed and compared with the combined RT-PCR and RAPD methods. Seven out of 61 random primers were found to be polymorphic based on RAPD analysis resulting on the differentiation of the 33 BaYMV isolates into four distinct groups according to geographical districts. The first and largest group includes 13 isolate and consists mainly of two-rowed malting barley in Haenam area. The second group had ten collections from inland in west southern. The third group had seven isolates from west southern coastal region, where mainly six-rowed naked barley is cultivated. The last fourth group included three isolates from Gyungnam region in east southern area. Conclusively, RNA 1 analysis proved to be stable and efficient method for strain distinction for Korean BaYMV isolates. Further, results of pathogenicity and RNA 1 structure analyses revealed four groups BaYMV strains and were distributed all over Korea, represented by Naju, Haenam-okcheon, Iksan and Milyang.
일부 직업성 무기연 남성 폭로자의 갑상선 기능에 대한 연구
김형수,노우환,김대성,박윤철,박종태,최재욱 大韓産業醫學會 1999 대한직업환경의학회지 Vol.11 No.2
This study was performed to evaluate the relationship between biological markers of lead exposure and thyroid functions among male workers occupationally exposed to inorganic lead. 30 male workers exposed to inorganic lead at smelting and battery factories were investigated, and 30 male control workers who were not exposed to inorganic lead occupationally were chosen for this study. The data were obtained using direct interview and assessment of biological markers of lead exposure and thyroid indices. As biological markers for lead exposure, blood ZPP, blood lead, urine lead and hemoglobin were measured. As thyroid indices, TSH and FT₄were determined. The results of the study were summarized as follows; 1. Levels of ZPP, blood lead, and urine lead were significantly higher in lead-exposed group than in nonexposed control group(p<0.01 all). Hemoglobin level was significantly lower in lead-exposed group than in nonexposed group(p<0.01). 2. Study subjects had normal values of TSH and FT₄. But TSH level was insignificantly lower in lead-exposed group than in nonexposed control group(p=0.11) and FT₄level was significantly lower in lead-exposed group than in nonexposed group(p<0.01). 3. As the result of simple regression analysis in lead-exposed group, FT₄level was negatively correlated with the amount of smoke, blood ZPP, and blood lead(p<0.05 all). 4. In lead-exposed group, FT₄was used as a independent variable and age, the amount of smoke, blood ZPP, and blood lead were entered as a dependent variables in the model. As the result of multiple regression analysis with stepwise selection method, the amount of smoke an blood ZPP were negative predictors of FT₄(p=0.04, p=0.09, respectively). In conclusion, levels of TSH and FT₄were lower in lead-exposed group than in nonexposed control group. In lead-exposed group, FT₄level was negatively correlated with amount of smoke, blood ZPP, and blood lead in simple regression analysis. To clarify this relation, further research between lead exposure and thyroid function may be required for worker with long-term lead exposure of high lead exposure.
A New Sesame Variety, “Kangbaek” with Disease Resistance, Lodging Tolerence and High Yield
Kang-Bo Shim,Churl-Whan Kang,Suk-Bok Pae,Si-Kyu Lim,Yu-Young Lee,Duck-Yong Suh,Jae-Whan Rho,Jin Song,Dong-Whi Kim,Ho-Young Kim 한국육종학회 2005 한국육종학회지 Vol.37 No.5
A new sesame variety Kangbaek was developed from Yeongnam Agricultural Research Institute in 2004. Cros wasmade by lodging resistant SP9003-3 line to the F1with high yielding capacity, folowed by pedigree selection, yield test and RYT by the sesame breeding team at the National Insti-tute of Crop Science up to 2003. The variety showed higher disease resistance, especially phytophothra disease, and lodging resis-respectively. It's 1000 grains weight was about 2.54 g indicating 0.03 g heavier than that of Yangbaekkae, and it's oil content wasabout 52%. Kangbaek also contained total 7.65mg/g of such lignans as sesamin and sesamolin. The average yield of Kang-baek was 82 kg per 10a at the national-wide regional performance.