同: right ventricular dimension at end-diastole

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English Journal

Right Ventricular Morphology and Systolic Function in Left Ventricular Noncompaction Cardiomyopathy.

Stacey RB1, Andersen M2, Haag J3, Hall ME4, McLeod G5, Upadhya B2, Hundley WG6, Thohan V7.Author information 1Department of Internal Medicine Section on Cardiology, Wake Forest University School of Medicine, Winston-Salem, North Carolina. Electronic address: bstacey@wfubmc.edu.2Department of Internal Medicine Section on Cardiology, Wake Forest University School of Medicine, Winston-Salem, North Carolina.3Raleigh Cardiology, WakeMed Health and Hospitals, Raleigh, North Carolina.4Division of Cardiology, Department of Internal Medicine, University of Mississippi Medical Center, Jackson, Mississippi.5Department of Internal Medicine at the University of Texas Southwestern, Dallas, Texas.6Department of Internal Medicine Section on Cardiology, Wake Forest University School of Medicine, Winston-Salem, North Carolina; Department of Radiology, Wake Forest University School of Medicine, Winston-Salem, North Carolina.7Aurora Cardiovascular Services, Aurora Sinai/Aurora St. Luke's Medical Centers, Milwaukee, Wisconsin.AbstractThe distinction between normal right ventricular (RV) trabeculations from abnormal has been difficult. We evaluated whether RV volume and function are related to left ventricular (LV) noncompaction (NC) cardiomyopathy and clinical events. Trabeculations or possible LVNC by cardiac magnetic resonance imaging was retrospectively observed among 105 consecutive cases. We measured LV end-systolic (ES) noncompacted-to-compacted ratio, RV ejection fraction (EF), RV apical trabecular thickness, and RV end-diastolic (ED) noncompacted-to-compacted ratio. A control group of 40 subjects was also reviewed to assess the exploratory measures. Comparing those with LVES noncompacted-to-compacted ratio ≥2, those with LVES noncompacted-to-compacted ratio <2, and the normal control group, adjusted means for RV apical trabecular thickness and RVED noncompacted-to-compacted ratio were generated. Logistic regression was used to evaluate the association of composite events traditionally associated with LVNC with RVEF after adjustment for aforementioned covariates, cardiovascular risk factors, delayed enhancement, LVEF, and LVES noncompacted-to-compacted ratio. Analysis of RV morphology found greater apical trabecular thickness among those with LVES noncompacted-to-compacted ratio ≥2 compared with those with LVES noncompacted-to-compacted ratio <2 or normal control group (31 ± 5 vs 27 ± 2.6 vs 22 ± 4 mm; p = 0.03 and p = 0.003, respectively). There was no difference between the groups in relation to the RVED noncompacted-to-compacted ratio. Low RVEF and LVES noncompacted-to-compacted ratio ≥2 had significant association with clinical events in this population even after adjusting for clinical and imaging parameters (p = 0.04 and p <0.001, respectively). In conclusion, RV dysfunction in a morphologic LVNC population is strongly associated with adverse clinical events. LVNC is associated with increased trabeculations of the RV apex.
The American journal of cardiology.Am J Cardiol.2013 Dec 25. pii: S0002-9149(13)02463-6. doi: 10.1016/j.amjcard.2013.12.008. [Epub ahead of print]
The distinction between normal right ventricular (RV) trabeculations from abnormal has been difficult. We evaluated whether RV volume and function are related to left ventricular (LV) noncompaction (NC) cardiomyopathy and clinical events. Trabeculations or possible LVNC by cardiac magnetic resonance
PMID 24462071

[Role of oxygen therapy in prevention of chronic mountain sickness].

Cui JH1, Gao L1, Xing WR2, Wang FL1, Xue X2, Wang Y1, Wu PF1, Li NH1, Zhang JC1.Author information 1The 18th Hospital of PLA, Yecheng 844900, China.2Department of Health of Lanzhou Military Zone, Lanzhou 730000, China.AbstractOBJECTIVE: To explore the effect of prophylaxis on youth's chronic mountain sickness(CMS) who moved to an altitude of above 5 000 meters by long-term oxygen therapy (LTOT).
Zhongguo ying yong sheng li xue za zhi = Zhongguo yingyong shenglixue zazhi = Chinese journal of applied physiology.Zhongguo Ying Yong Sheng Li Xue Za Zhi.2013 Sep;29(5):391-4.
OBJECTIVE: To explore the effect of prophylaxis on youth's chronic mountain sickness(CMS) who moved to an altitude of above 5 000 meters by long-term oxygen therapy (LTOT).METHODS: Ninety-six male youth stationed at 5 070 m, 5 200 m and 5 380 m took oxygen continuously by nasal cannula (LTOT group)
PMID 24386809

Speckle-tracking echocardiographic imaging of the right ventricular systolic and diastolic parameters in chronic exercise.

Simsek Z1, Tas MH, Gunay E, Degirmenci H.Author information 1Department of Cardiology, Faculty of Medicine, Ataturk University, Erzurum, Turkey. ziyamposta@hotmail.comAbstractMorphology and functions of the right ventricle (RV) show differences in the athletes based on whether exercising acutely or chronically. Temporary RV dysfunction occurs during acute exercise. However, RV functions during chronic exercise are speculative. In the present study, we aimed to evaluate RV functions of long-distance runners, who perform chronic exercise, by both conventional and speckle-tracking echocardiography. In this study, we examined 44 long-distance runner and 30 sedentary subjects. RV longitudinal strain (LS), RV systolic longitudinal strain rate (LSRs), RV early diastolic longitudinal strain rate and late diastolic longitudinal strain rate parameters were evaluated by apical 4-chamber gray-scale imaging through the septum and free wall of RV in accordance with automated function imaging protocol. It was observed on the conventional echocardiographic parameters of longdistance runners that RA and RVED diameter have been increased (p = 0.028; p = 0.003 respectively), whereas systolic right ventricle fractional area change and tricuspid annular plane systolic excursion values were similar to those of sedentary subjects (p = 0.65; p = 0.75 respectively). LS and systolic and diastolic strain rate functions were also similar. Morphological adaptation, but not functional change, occurs in the athletes performing chronic exercise.
The international journal of cardiovascular imaging.Int J Cardiovasc Imaging.2013 Aug;29(6):1265-71. doi: 10.1007/s10554-013-0204-z. Epub 2013 Mar 12.
Morphology and functions of the right ventricle (RV) show differences in the athletes based on whether exercising acutely or chronically. Temporary RV dysfunction occurs during acute exercise. However, RV functions during chronic exercise are speculative. In the present study, we aimed to evaluate R
PMID 23478892

Japanese Journal

ずれ止め諸元が鋼コンクリート合成床版の損傷モードに及ぼす影響

藤山知加子,櫻井信彰,前川宏一
土木学会論文集A1（構造・地震工学） 68(1), 1-15, 2012
　リブ形状およびリブ配置が鋼コンクリート合成床版の破壊モードに与える影響を，実験と数値解析の両面から検討した．リブピッチが版有効高以下から3倍以上の3種類の供試体を作製し，静的載荷実験を実施した結果，リブ上端からのひび割れが水平方向に連続して連なる2層化破壊型，リブ上端を経由して2重のせん断破壊面が生じる多重破壊面型，リブの配置の影響を受けない押抜きせん断破壊型の破壊モードが確認された．鋼コンクリ …
NAID 130004961248

Influence of Skin Thickness on the in Vitro Permeabilities of Drugs through Sprague-Dawley Rat or Yucatan Micropig Skin

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Biological and Pharmaceutical Bulletin 35(2), 192-202, 2012
… YMP skin thickness: approximately 0.4, 0.9, 1.8 or 2.8 mm) were set in Franz-type diffusion cells to determine the permeation rate, lag time and resistance ratio of the viable epidermis and dermis against whole skin (Rved/Rtot) of the drugs. … The Rved/Rtot values for the YMP skins were relatively large for lipophilic drugs (ISDN and FP), and these ratios increased with an increase in the dermis thickness. …
NAID 130001872293

不連続部を考慮にいれた動的輪郭モデルを用いたステレオ対応点探索

阿閉進也,堀田裕弘,村井忠邦
情報処理学会研究報告. CVIM, [コンピュータビジョンとイメージメディア] 2001(4), 79-84, 2001-01-18
複数の画像から3次元情報を取得する手法は、今までさまざまな測定方法が存在し、その中でも最も汎用的な手法としてステレオ視が挙げられる。このステレオ視では対応点探索問題があり、各左右の画素間の特徴点を見つけるのにオクルージョンや連続部の検出が問題となる。本研究では、これらの問題を動的輪郭モデルを用いたエネルギー最小化問題として定式化し、視差の空間的変化があるしきい値以上の部分をオクルージョンと仮定し、 …
NAID 110002674580