Prevalence and Associated Factors of Diabetes Mellitus in a Very Elderly Chinese Population: A Cross-sectional Study / 生物医学与环境科学（英文）

Objectives@#This paper aimed to investigate the prevalence of diabetes mellitus (DM) and explore the associated risk factors in a very elderly southwest Chinese population.@*Methods@#From September 2015 to June 2016, a cross-sectional survey was conducted to obtain a representative sample of 1,326 participants over 80 years old living in Chengdu. The presence of DM was based on fasting plasma glucose (FPG) and 2-h plasma glucose (2-hPG) levels during an oral glucose tolerance test (OGTT). A logistic regression model was used to calculate the odds ratios ( s) and 95% confidence intervals ( s) of the potential associated factors.@*Results@#The participants' mean age was 83.5 ± 3.1 years. The overall prevalence of DM was 27.4%. The prevalence was higher in males (30.2%) than females (24.7%) ( = 0.02). The prevalence of DM increased with body mass index (BMI) and decreased with aging. The multivariate analysis suggested that male sex ( = 1.433; 95% , 1.116-1.843), hypertension ( = 1.439; 95% , 1.079-1.936), overweight or obesity ( = 1.371; 95% , 1.023-1.834), high heart rate (≥ 75 beats/min; = 1.362; 95% , 1.063-1.746), and abdominal obesity ( = 1.615; 95% , 1.216-2.149) were all significantly positively correlated with DM. However, age was negatively correlated with DM ( = 0.952; 95% , 0.916-0.989).@*Conclusions@#The prevalence of DM and newly diagnosed DM in a very elderly southwest Chinese population was high. OGTT screening should be performed regularly in people aged ≥ 80 years to ensure timely diagnosis of DM.

Safety and efficiency of pacing at right ventricular outflow versus at ventricular cardiac apex / 中华心血管病杂志

<p><b>OBJECTIVE</b>To compare the safety and efficiency of pacing at right ventricular outflow versus right ventricular apex.</p><p><b>METHOD</b>Patients were divided into two groups: pacing at ventricular cardiac apex (common pacing group, n = 22) and pacing at right ventricular outflow tract (uncommon pacing group, n = 18).</p><p><b>RESULTS</b>Impedance and amplitude of R-wave were similar during implantation between the two groups (all P > 0.05). The pacing threshold and electric current were significant higher in uncommon group than those in common pacing group (all P < 0.05), however, these differences disappeared at 1 month post pacemaker implantation (all P > 0.05). The mean QRS duration tended to be shorter in uncommon pacing group compared to that in common pacing group (P > 0.05). There was no pacemaker associated adverse effect in both groups.</p><p><b>CONCLUSION</b>The safety and efficiency of pacing at right ventricular outflow was similar as those of pacing at right ventricular apex.</p>

Report on initiating clinical research for electrical and mechanical synchronism of selective region pacing in the right ventricular / 中华心血管病杂志

<p><b>OBJECTIVE</b>To verify the electric synchronism, mechanic synchronism and hemodynamics of selective site pacing.</p><p><b>METHODS</b>Pacing in the right ventricular cardiac apex (RVA), the right ventricular His bundle region (His), and the septum of right ventricular high-positioned outflow tract (RVOT), CO and CI were recorded. The electrical synchronism was assessed by observing the width and shape in a 12-lead surface ECG. The mechanical synchronism was estimated by using the VVI (vector velocity imaging) technology of the Acuson Sequia 512.</p><p><b>RESULTS</b>The results showed that CO and CI were lower while pacing in RVA, but they were not significant different (P>0.05). The QRS width: (124 +/- 5.3) ms while pacing in His, (144 +/- 7.1) ms while pacing in RVOT and (156 +/- 8.6) ms while pacing in RVA. The QRS width while pacing in His and in RVOT were narrower than in RVA and there were significant differences (P<0.01). Vector velocity imaging showed that mechanical synchronism was better while pacing in RVOT than that in RVA.</p><p><b>CONCLUSION</b>Pacing in RVOT seems better than pacing in traditional RVA, and the operation was no more difficult than the traditional operation.</p>

Rapid natural resolution of intracranial hematoma / 中华创伤杂志(英文版)

<p><b>OBJECTIVE</b>To investigate the clinical characteristics of intracranial hematoma and the mechanism involved in its rapid natural resolution.</p><p><b>METHODS</b>Seventeen cases of intracranial hematoma with typical clinical and CT manifestations were retrospectively studied.</p><p><b>RESULTS</b>Intracranial hematoma was found obviously decreased in size within 72 h after its occurrence in 8 cases. The rest 9 cases presented complete resolution.</p><p><b>CONCLUSIONS</b>Rapid natural resolution of acute epidural hematoma is mostly found in teenagers and the resolution is correlated with cranial fracture at the hematoma site. As for acute subdural hematoma, its rapid resolution is associated with the transfer of cerebrospinal fluid toward subdural space, the lavage effect, and the compression caused by the increased intracranial pressure or the space left resulting from redistribution of the hematoma in brain atrophy.</p>