Single-Molecule hsTnI and Short-Term Risk in Stable Patients With Chest Pain

Background

Evaluation of stable symptomatic outpatients with suspected coronary artery disease (CAD) may be challenging because they have a wide range of cardiovascular risk. The role of troponin testing to assist clinical decision making in this setting is unexplored.

血府逐瘀汤治疗闭合性胸部损伤60例

目的：探讨血府逐瘀汤治疗胸部闭合性损伤。方法：60例均采用入院后第3d口服血府逐瘀汤。结果：60例全部治愈，1个疗程治愈18例，两个疗程治愈14例，并发肋骨骨折4～6个疗程。结论：血府逐瘀汤有活血化瘀，行气止痛，养血接骨，可缩短疗程，促进愈合，值得推广。     

Morphometric analysis of variation in the ribs with age and sex

Rib cage morphology changes with age and sex are expected to affect thoracic injury mechanisms and tolerance, particularly for vulnerable populations such as pediatrics and the elderly. The size and shape variation of the external geometry of the ribs was characterized for males and females aged 0–100 years. Computed tomography (CT) scans from 339 subjects were analyzed to collect between 2700 and 10 400 homologous landmarks from each rib. Rib landmarks were analyzed using the geometric morphometric technique known as Procrustes superimposition. Age‐ and sex‐specific functions of 3D rib morphology were produced representing the combined size and shape variation and the isolated shape variation. Statistically significant changes in the size and shape variation (P < 0.0001) and shape variation (P < 0.0053) of all 24 ribs were found to occur with age in males and females. Rib geometry, location, and orientation varied according to the rib level. From birth through adolescence, the rib cage experienced an increase in size, a decrease in thoracic kyphosis, and inferior rotation of the ribs relative to the spine within the sagittal plane. From young adulthood into elderly age, the rib cage experienced increased thoracic kyphosis and superior rotation of the ribs relative to the spine within the sagittal plane. The increased roundedness of the rib cage and horizontal angling of the ribs relative to the spine with age influences the biomechanical response of the thorax. With the plane of the rib oriented more horizontally, loading applied in the anterior‐posterior direction will result in increased deformation within the plane of the rib and an increased risk for rib fractures. Thus, morphological changes may be a contributing factor to the increased incidence of rib fractures in the elderly. The morphological functions derived in this study capture substantially more information on thoracic skeleton morphology variation with age and sex than is currently available in the literature. The developed models of rib cage anatomy can be used to study age and sex variations in thoracic injury patterns due to motor vehicle crashes or falls, and clinically relevant changes due to chronic obstructive pulmonary disease or other diseases evidenced by structural and anatomic changes to the chest.     

64层螺旋CT联合心肌酶检查应用于急性心源性胸痛诊断的临床价值分析

目的研究分析64层螺旋CT联合心肌酶检查应用于急性心源性胸痛诊断的临床价值。方法随机选取2008年2月~2011年3月我院收治的45例急性心源性胸痛患者作为治疗组,抽取同期来我院体检中心进行检查的45例健康者作为对照组,对照组单纯给予MSCTA(64层螺旋CT血管成像)进行检查。治疗组在此基础上联合血清心肌酶检查,观察两组患者的诊断情况。结果治疗组患者经MSCTA联合心肌酶检查诊断急性心源性胸痛特异性为100%,敏感性为95.56%,显著高于对照组93.33%、86.67%,组间差异显著,具有统计学意义(P0.05);经MSCTA分辨钙化粥样斑块CT值为(341.65±308.42)HU,非钙化粥样斑块CT值为(59.88±67.93)HU,差异显著,具有统计学意义(P0.05)。结论 64层螺旋CT联合心肌酶检查应用于诊断急性心源性胸痛效果良好,准确率较高,同时对判断冠状动脉斑块与狭窄性质具有积极的意义。     

便携式核事故急救箱的研制

目的:研制一种便携式核事故急救箱,用于核事故现场伤员的自救互救。方法:核事故急救箱外形尺寸为360 mm×240 mm×150 mm,箱体采用5 mm防水板材,表面覆压花铝板,内衬木质纤维板,外层喷涂亚光漆。箱盖内侧设计自带照明装置,箱体内划分为急性放射病防治药放置专区和常规战伤急救药材放置区。急性放射病防治药放置区设计3个Φ50 mm孔洞和4个Φ30 mm孔洞,用于放置配备的抗放药品。结果:用该急救箱在核设施现场开展伤情模拟救治,能满足核事故现场伤员自救互救需求。结论:便携式核事故急救箱设计合理、标识清晰,能有效提高核事故现场伤员自救互救能力和存活率,具有较好的实用价值。     

Hereditary persistence of hemoglobin F is protective against red cell sickling. A case report and brief review

Fetal hemoglobin (HbF) is a physiologic protein tetramer that is crucial for a developing fetus to survive in utero. Maternal hemoglobin has a relatively lower affinity for oxygen, and thus allows for an efficient transfer of oxygen from maternal to fetal blood. In addition to fulfilling a critical physiologic role, HbF is also known to alleviate symptoms of sickle-cell disease (SCD). The concentration of HbF depends on several factors. HbF is elevated in inherited conditions, such as hereditary persistence of HbF, hereditary spherocytosis, and thalassemia. The level of HbF is also increased in acquired states, such as pregnancy, aplastic anemia, thyrotoxicosis, hepatoma, myeloproliferative disorders, or hypoplastic myelodysplastic syndrome. It has been identified that some genetic loci have significant influence on HbF levels. The XmnI polymorphism, the HMIP locus, and the BCL11A gene are responsible for 45% of variations in HbF levels. Although SCD has been well described in the subpopulations of Africa, it is less common in the subpopulations of India. We describe a case of SCD, in which a patient with high HbF level presented at a very late age (27 years old). We presume the patient’s inherently elevated HbF levels were able to compensate for the hypoxic episodes associated with SCD. The onset of symptoms was delayed as a result of elevated HbF levels.