0.05).The subgroup patients of the oxygenation index

Objective In order to discuss the practicability and risk analysis of deep venous catheter in AIDS patients.Methods 112 patients who needed to keep the intravenous route between October in 2010 and February in 2012 in Yunnan AIDS care center were implemented deep venous catheter.Results Right Subclavian vein catheter 101 cases,right internal jugular vein catheter 10 cases,right femoral vein catheter in 1.Wound happened in 5 cases,catheter heterotopia 1 case.Conclusion Deep venous catheter in patients with HIV/AIDS clinical diagnosis and treatment work could not only relieve the patients' pain because of repeated puncture,reduce the nursing workload,ensure the smooth progress of the clinical diagnosis and treatment,but also the more important is to reduce the occupational exposure risk of medical staff.

Objective To investigate left ventricular(LV) systolic dyssynchrony in heart failure of different etiology which caused respectively by ischemic heart disease and dilated cardiomyopathy and analyse the correlation between the systolic dyssynchrony index(SDI) and the LV ejection fraction(LVEF). Methods Forty-three subjects were divided into two groups. Group A consisted of 17 heart failure patients which caused by ischemic heart disease and group B included 26 heart failure patients which caused by dilated cardiomyopathy. Three-dimensional datum of left ventricle were obtained using real-time three-dimensional echocardiography (RT-3DE) in full volume mode. Post-processing software Qlab was used for advanced analysis. The end-diastolic volume (EDV), end-systolic volume (ESV), LVEF and bull eye graph of seventeen segments were obtained. Standard deviation of time-to-minimal-systolic-volume of 16-LV segments corrected by R-R interval was calculated as SDI of LV. Results There was no statistical difference in age, heart rate, LVEF and EDV between the two groups (P >0.05). SDI of group A was lower than that of group B,but there was no statistical difference between them (P>0.05). Bull eye graph of seventeen segments revealed that the distribution of delayed systolic segments were different between the two groups. SDI of two groups appeared negative correlation with LVEF(r = -0.83, r = -0.71, P-< 0.01). Conclusions LV systolic dyssynchrony existed in heart failure which caused by ischemic heart disease and dilated cardiomyopathy,but the distribution of delayed systolic segments were different between them. SDI increased with worsening LV systolic function.

Objective To investigate the application of echocardiography in the diagnosis of neonatal ductus arteriosus aneurysm (DAA).Methods A total of 27 neonates with DAA were detected by echocardiography.Echocardiographic features in these cases were explored and outcome of these neonates were followed up.Results There were four crucial features in DAA detected by echocardiography:① A vessel bump was shown on the left side of the origination of left pulmonary artery(LPA) in the high parasternal short-axis view.②A horizontal shunt jet from the bump to the origination of LPA was shown when interrogate the top of the bump.③The bump joined the descending arota when interrogate it down and back orientately.A ‘V' shaped sign was shown when the aortic arch appeared on the right side and the bump on the left side.④A slow red flow signal was found in bump when the scale of color Doppler was cut down.The follow-up echocardiography showed spontaneous closure of the DAA when 3 months of age except one case lost.There were no abnormality in the figure and function in heart.Conclusions Echocardiography can be a valuable method for the diagnosis of neonatal ductus arteriosus aneurysm.Neonate with DAA have a good outcome.

Objective To assess the effects of QRS duration on left ventricular systolic synchronicity in patients with heart failure by real-time three-dimensional echocardiography(RT-3DE).Methods Thirty-four patients with heart failure(LVEF≤35%)were selected and divided into two groups.Group A consisted of 20 patients with normal QRS duration,and group B included 14 patients with long ORS duration.All the patients underwent two-dimensional echocardiography(2DE)and RT-3DE respectively.Parameters including left ventricular inlernal diameter(LVIDd),left ventricular ejection fraction(LVEF)of 2DE,and left ventricular endsystolic volume(LVESV),left ventricular end-diastolic volume(LVEDV),LVEF,the time to minimal systolic volume of 16-segmental standard deviation as a ratio of R-R interval(Tmsv16-sd/RR)of RT-3DE were obtained and analyzed between the two groups.Results There were no significant differences of LVIDd,LVEF acquired by 2DE between the two groups(P＞0.05);LVESV,LVEDV,Tmsv16-sd/RR of RT-3DE were slightly higher in group B than those in group A,but didn't reach the significant difference between the two groups(P＞0.05).The mechanical dyssynchrony maybe related to the severity of heart failure.Conclusions RT-3DE can quantify global left ventricular systolic synchronicity.QRS duration has no significant effect on left ventricular systolic synchronicity in patients with heart failure.

Objective:To study the ultrasonographic manifestations of intercostal muscle and diaphragm involvement in Duchenne muscular dystrophy (DMD) and their correlations with functional status, and to explore the pattern of muscle damage in patients with DMD and the potential role of ultrasonography in assessing disease progression.Methods:A total of 28 patients with DMD who received treatment in the Third Medical Centre of PLA General Hospital from May to December 2023 were prospectively collected as DMD group, and 28 healthy children matched in age and sex were included as controls for a prospective study.Diaphragm thickening fraction (DTF) and intercostal muscle thickening fraction (ICMTF) were measured by B-mode and M-mode ultrasonography, and the muscle gray values were recorded. The differences between groups were compared, and the values of DTF and ICMTF in evaluating the structural and functional changes of respiratory muscle were analyzed.Results:Compared with the control group, the gray value of respiratory muscle was significantly decreased in DMD group, the diaphragm and intercostal muscle were significantly thickened at the end of inspiratory and expiratory periods, DTF was significantly decreased, and ICMTF was significantly increased (all P<0.001). Conclusions:Ultrasound can evaluate the structural changes of respiratory muscle in DMD, so as to clarify the relationship between the structure and function of respiratory muscle in DMD patients.

Objective: To investigate the function of FAK / Twist1 signaling pathway during craniosynostosis closure. Methods: Ten days old rats were divided into a control group (n = 50) and a rotation group (n = 50) . Both of them were made a approximately 0. 5 cm circle bone window at the midpoint of the lambdoid suture of the rat.The bone flaps were left free without damaging the dura mater. The bone flaps in the control group were repositioned in situ , and the bone flaps in the rotation group were rotated 180 ° and repositioned 3 weeks later. Then the experiments were performance as followed :open field test , measurement of body weight , head circumference , bone flap area , and thickness of bone flap in the two groups , observation of cranial suture closure by microscopy and HE staining , FAK / Twist1 expression determined by Western blot , real⁃time PCR , and immunohistochemical staining in the bone flap and dure , respectively. Results: The cranial sutures was completely closed in the rotation groupand that was open in the control group through detecting by microscopic examination and HE staining. The thickness of the bone flap in the derotation group was greater than that in the control group , with statistical significance (P < 0. 01) . There were no significant differences between two groups in head circumference , weight , bone flap area , and operative area. The results of behavioral test showed that after the closure of cranial suture , the acsion of FAK was significantly increased in the calvaria and dura as well as Twsit1 was significantly decreased in the dura in rotating group measuring by Western blot , real⁃time PCR , and immunohistochemical staining (P < 0. 05) . Conclusion FAK/Twist1 may play an important role in craniosynostosis after rotation.