In neonatal age the use of LUS is becoming a new and reliable tool in the hand of the clinician.
Objective：To establish a new method for determining the contents of flavonoid in Astraga Lus among different areas. Methods：Flavonoid in Astraga Lus was determined by UV spectrophotometry at the wavelength 260 nm， with calycosin-7-glucoside as index. And this method can be used for assaying of flavonoid in Astraga Lus from different habitats. Results：The linear range of calibration curve was 4~20 μg/m L， r=0.9999. The average recovery rate was 99.96% with the relative standard deviation 1.53%. The contents of flavonoid in Astraga Lus were 0.234%~0.383%. Conclusion：This method can be used for evaluation of quality of flavonoid in Astraga Lus. The contents in flavonoid can be ranked as follows： DaxinganlingGansuShanxiNeimenggu.
Current practice of lung ultrasonography (LUS) in the diagnosis of pneumothorax: a survey of physician sonographers in Germany
BACKGROUND： The purpose of this study was to survey the current practice of the use of lung ultrasonography (LUS) in the diagnosis of pneumothorax. METHODS： Physician sonographers， accredited for diagnostic ultrasonography in surgery， anaesthesia and medicine were studied. Questions addressed the frequency of exposure to patients with suspected pneumothorax， frequency of LUS use， preferences regarding technical aspects of LUS examination， assessment of diagnostic accuracy of LUS and involvement in teaching. RESULTS： Of the respondents， 55.1% used LUS 'always' or 'frequently' for suspected pneumothorax. Also， 35.5% of physicians rated LUS as 'always reliable' in ruling out pneumothorax， and 21.3% of respondents rated LUS as 'always reliable' in ruling in pneumothorax. The mode of performing LUS for pneumothorax was highly variable. Statistically significant differences were found regarding the likelihood of LUS usage， the combined use of M-Mode and B-mode scanning and the confidence to exclude pneumothorax based on LUS findings for physicians with frequent exposure to pneumothorax cases. CONCLUSIONS： Physicians' use of LUS in the diagnosis of pneumothorax is modest. Confidence in diagnostic accuracy is not comprehensive. Further research is required to establish the most efficient way of performing LUS in this scenario to achieve the highest possible diagnostic accuracy and reliable documentation of examination results.
Ultrasound Assessment of Lower Uterine Segment Thickness During Pregnancy, Labour, and the Postpartum Period.
To evaluate the normal ranges of lower uterine segment (LUS) thickness throughout pregnancy in women without a uterine scar defect and to evaluate the relationship between ultrasound and intraoperative LUS thickness. We assessed LUS thickness using transabdominal and transperineal longitudinal scan at each week of gestation， during labour， and postpartum in 1000 pregnant women without previous Caesarean section (CS). Secondly， we assessed LUS thickness immediately before CS (by ultrasound) and intraoperatively (by ophthalmic calipers) immediately before delivery of the fetus in 35 women with a previous CS and 29 women without previous CS undergoing elective CS before labour. We performed 20 307 LUS thickness measurements in between 119 and 944 women at each week of gestation， in 944 women during labour， and in 936 women after delivery. We observed a strong relationship between transabdominal and transperineal ultrasound (P< 0.001) and an inverse correlation between LUS thickness and gestational age (P< 0.001)， with a mean thickness of 5.1±1.4 mm at 20 weeks， 3.6±1.3 mm at 30 weeks， and 2.3±0.6 mm at 40 weeks of gestation. In women undergoing elective CS， we observed a strong relationship between antepartum and intraoperative LUS thickness (P< 0.001)， with means of 2.2±0.7 in 28 women without thinning of LUS; 0.8±0.1 mm in four women with grade II uterine scar dehiscence; and 0.4±0.1 mm in three women with grade III dehiscence. A LUS myometrial thickness below 1.2 mm could have predicted all grade II and grade III uterine scar dehiscences without false-positive cases. LUS thickness decreases with gestational age and correlates strongly with the intraoperative LUS thickness in women with a previous CS.
The LUS can be an alternative diagnostic imaging modality for chest X-ray in follow up neonates with RDS and subsequent reduction dose of radiation.
In an all-student production， this year’s HMSA board incorporates our 2011-2012 vision and Heritage Day theme “Preserving Our Past， Paving Our Future” to showcase HMSA’s most celebrated event with amazing performances in acting， phenomenal singing， coordinated fashion show， traditional and contemporary dance. Cov Lus Tseg Cia follows a tragic loss， reminding us that there needs to be balance in the relationship with yourself and others. Take quality and quantity time with loved ones to grow by learning and teaching each other about similarities and differences in culture， life， and opportunities. But most importantly， do not forget the origin of your ethnic heritage - the most essential to your existence.
目的：观察盐酸米诺环素软膏联合 AH －plus 糊剂治疗牙周牙髓联合病变的临床疗效。方法：选取牙周牙髓联合病变患者98例作为研究，依据治疗措施不同分为常规治疗组（氢氧化钙糊剂治疗）48例和联合治疗组（盐酸米诺环素软膏联合 AH －plus 糊剂治疗）50例。观察比较两组临床效果。结果：治疗组菌斑指数（PLT）、探诊出血指数（Bop）、牙周袋深度（PD）、牙周附着水平（AL）均优常规治疗组（P ＜0.05）；联合治疗组总有效率明显优于常规治疗组，差异有统计学意义（P ＜0.05）。结论：盐酸米诺环素软膏联合 AH－lus 糊剂治疗牙周牙髓联合病变患者疗效较好，值得临床推广。
Sonographic assessment of lower uterine segment thickness at term in women with previous cesarean delivery
The purpose of this study was to establish the validity of abdominal sonographic evaluation of lower uterine segment (LUS) thickness in full-term pregnancies with a single previous cesarean section， and to assess the usefulness of measuring LUS thickness in predicting the risk of uterine dehiscence.Three hundred and thirty-six women with a single previous cesarean section who had an ultrasound measurement of the LUS thickness in pregnancy were enrolled. Abdominal sonographic assessment of LUS was carried out within 2 weeks of delivery. Sonographic measurements were correlated visual finding of a uterine scar at the time of the iterative cesarean section. Receiver operating curve analyses has been used to determine the detection rate and the risk of each actual value of LUS thickness vs. a thin uterine scar.In our present study， 2.5 mm was considered the critical cut-off value of the LUS thickness. This critical cut-off value was derived from the ROC curve with sensitivity， specificity， PPV， and NPV of 90.9， 84， 71.4， and 95.5 %， respectively (using transabdominal ultrasound). The linear regression model analysis revealed that full LUS thickness of <2.5 mm was the only factor to be correlated with translucent lower uterine segment (C3) (8.8 vs. 0 %; P = 0.02).Full LUS thickness of <2.5 mm is associated with a higher risk of uterine dehiscence.
Objectives： This study focused on evaluating the value of transvaginal 3Dultrasound for the diagnosis and prognostic assessment of post-cesarean sectionuterine diverticulum. Materials and Methods： We retrospectively analyzed the datafrom 32 patients with post-cesarean section uterine diverticulum over three recentyears. In all patients， transvaginal 3D ultrasound was used to measure the sizeof the uterine diverticulum and the thickness of the lower uterine segment (LUS)and myometrium. Patients with a LUS with a myometrial thickness under 4 mm underwentresection and repair surgery; those with a LUS with a myometrial thickness over4 mm underwent hysteroscopic resection. The postoperative sonograms were comparedwith preoperative images to evaluate the efficacy of various treatments. Results：The mean length， width and depth of the uterine diverticula were 18.30 ± 2.80 mm，9.14 ± 3.20 mm and 11.49 ± 2.71 mm， respectively. The average LUS myometrial thicknesswas 3.40 ± 0.80 mm (with a range of 1.6 mm - 6.3 mm). After surgery， two patients’sonograms still showed diverticula at the post-cesarean section scar， measuring6 mm × 7 mm × 6 mm and 6 mm × 8 mm × 4 mm. There were significant differences inthe size of uterine diverticula between preoperative and postoperative sonograms(P < 0.05) and the effective rate of surgery was 93.75% (30/32). Conclusions：Transvaginal 3D ultrasound is an accurate method for detecting post-cesarean sectionuterine diverticulum and is helpful for assessing surgical options and prognosis.The LUS myometrial thickness， which is considered as an optional index of post-cesareansection uterine diverticulum， should be measured routinely.