196,296 research outputs found
Re: Iatrogenic perforation of intertwin membrane after laser surgery for twin-to-twin transfusion syndrome. S. H. P. Peeters, T. T. Stolk, F. Slaghekke, J. M. Middeldorp, F. J. Klumper, E. Lopriore and D. Oepkes. Ultrasound Obstet Gynecol 2014; 44: 550-556
No full textThe Grammatica da Lingua Italiana para os Portuguezes by Antonio Prefumo: between the traditional and the conversational method
No full textWithin the Italian FL2 grammatical tradition, the 19th century is a very fruitful period. In other contributions, we have highlighted how several Portuguese and Italian figures connected to the circle of the S. Carlos Theatre in Lisbon act as preceptors and compose some grammars, which contain a strong normative part and, at the same time, connect themselves to the conversational tradition: among these works, the Grammatica da Lingua Italiana para os Portuguezes by Antonio Prefumo (Lisbon, 1829) plays a central role, as it goes through four editions over almost forty years. The paper analyses the social and intellectual context of production of this text, besides outlining the author’s profile and providing a philological reconstruction of the sources and models adopted. Furthermore, the paper attempts an analysis of the Grammatica that, on the one hand, highlights both the heritage of the vernacular and Enlightenment grammatical traditions and its innovative aspects and, on the other hand, compares the various editions through the study of their macro-textual areas. The methodology underlying our description follows that proposed by Swiggers (2006, 168) being based on four aspects: the analysis of the author, the audience, the subject described and its form. This approach places the author at the centre of a historical conjuncture in which the traditional grammatical method was associated with that of conversation, responding to the demand of an audience that increasingly approached the study of FL for practical reasons, rather than to meet the traditional educational demands of the upper classes
Commentary on 'Pregnancy week at delivery and the risk of shoulder dystocia: A population study of 2 014 956 deliveries'
No full textObjectiveTo study whether pregnancy week at delivery is an independent risk factor for shoulder dystocia.DesignPopulation study.SettingMedical Birth Registry of Norway.PopulationAll vaginal deliveries of singleton offspring in cephalic presentation in Norway during 1967 through 2009 (n=2014956).MethodsThe incidence of shoulder dystocia was calculated according to pregnancy week at delivery. The associations of pregnancy week at delivery with shoulder dystocia were estimated as crude and adjusted odds ratios using logistic regression analyses. We repeated the analyses in pregnancies with and without maternal diabetes.Main outcome measuresShoulder dystocia at delivery.ResultsThe overall incidence of shoulder dystocia was 0.73% (n=14820), and the incidence increased by increasing pregnancy week at delivery. Birthweight was strongly associated with shoulder dystocia. After adjustment for birthweight, induction of labour, use of epidural analgesia at delivery, prolonged labour, forceps-assisted and vacuum-assisted delivery, parity, period of delivery and maternal age in multivariable analyses, the adjusted odds ratios for shoulder dystocia were 1.77 (1.42-2.20) for deliveries at 32-35weeks of gestation, and 0.84 (0.79-0.88) at 42-43weeks of gestation, using weeks 40-41 as the reference. In pregnancies affected by diabetes (n=11188), the incidence of shoulder dystocia was 3.95%, and after adjustment for birthweight the adjusted odds ratio for shoulder dystocia was 2.92 (95% CI 1.54-5.52) for deliveries at weeks 32-35 of gestation, and 0.91 (95% CI 0.50-1.66) at 42-43weeks of gestation.ConclusionThe risk of shoulder dystocia was associated with increased birthweight, diabetes, induction of labour, use of epidural analgesia at delivery, prolonged labour, forceps-assisted and vacuum-assisted delivery, parity and period of delivery but not with post-term delivery
Single umbilical artery and congenital heart disease in selected and unselected populations
No full textdiagnostic strategy to fetal anomalies
No full textObjectives: To compile a list of instant diagnoses of major fetal anomalies, and to present their sonographic descriptors and test them in a retrospective series of fetuses with congenital anomalies managed at our center. Methods: The first step was to identify major anomalies that meet the following criteria: (1) can be diagnosed directly and unequivocally on the basis of a set of descriptors evident on a single sonographic view; (2) are among those more commonly diagnosed in utero; (3) represent major lethal or life-threatening malformations or anomalies for which no or only palliative surgery can be performed. For each of these anomalies, a sonographic descriptor was produced. The second step was to test the descriptors of the instant diagnoses in all cases with these anomalies evaluated since January 2000 in our Fetal Medicine Unit, retrieved from our electronic database. For each congenital anomaly-sonographic descriptor pair we then evaluated the presence vs absence of an unequivocal relationship between anomaly and descriptor, assessing: whether a particular descriptor in a set reference plane identified unequivocally the anomaly, i.e. the same descriptor could not be found in any other malformation; and whether a particular anomaly presented the corresponding descriptor in all cases. Finally, we evaluated whether the sonographic descriptors could be applied in all trimesters or only selectively, considering the natural history of the 20 instant diagnoses. Results: Of the 20 instant diagnoses, five involved the central/peripheral nervous system (exencephaly/anencephaly, alobar/semilobar holoprosencephaly, cephalocele, open spinal dysraphism, complete agenesis of corpus callosum), five involved the heart (hypoplastic left heart syndrome, complete atrioventricular septal defect, severe Ebstein's anomaly, critical aortic stenosis, transposition of the great arteries), five involved the abdominal wall (left-sided congenital diaphragmatic hernia, exomphalos, gastroschisis, body-stalk anomaly) or gastrointestinal tract (duodenal atresia), and five involved the remaining systems (three urinary (autosomal recessive polycystic kidney disease, multicystic dysplastic kidney, lower urinary tract obstruction), two skeletal (transverse limb defect, radial ray defect)). All of the descriptors were found to identify unequivocally the related malformations, whereas four of the malformations were not associated with their reference descriptors in every case. For example, congenital diaphragmatic hernia (left-sided) presented without the stomach in the thorax in 42/93 (45.2%) cases. Due to the natural history of the condition, not all signs were recognizable in the first trimester, some becoming evident only from the second trimester onwards. Conclusion: We have defined sonographic descriptors that enable an unequivocal instant diagnosis for a list of 20 major congenital anomalies: the 'INDIAMAN-20' (INstant DIAgnosis of Major ANomalies) protocol. We believe that using this approach may facilitate focused training of less experienced operators and that it may be incorporated into artificial intelligence and deep learning protocols, further boosting the instant prenatal recognition of these lethal or life-threatening malformations. © 2022 International Society of Ultrasound in Obstetrics and Gynecology
A HYBRID SYSTEM FOR SHORT-TERM SCHEDULING IN MANUFACTURING - A CASE STUDY
No full textIn this paper a system for dealing with short-term scheduling problems in manufacturing is presented. The system has a hybrid architecture since it integrates a module based on a numerical scheduling algorithm with a knowledge-based module. The purpose of such a system is that of facing scheduling problems which, due to the complexity of the operational conditions involved, cannot be solved in an acceptable way by a reliable numerical algorithm. The approach proposed is that of generating a starting solution to a simplified version of the real problem by means of a numerical algorithm, and then modifying such a solution by the knowledge-based module in order to satisfy the real conditions. A case study which illustrates such an approach is produced
Agreement between anatomical M-mode and tissue Doppler imaging in the assessment of fetal atrioventricular annular plane displacement in uncomplicated pregnancies: A prospective longitudinal study
No full textAim: To evaluate the level of agreement between M-mode and pulsed-wave tissue Doppler imaging (PW-TDI) techniques in assessing fetal mitral annular plane systolic excursion (MAPSE), tricuspid annular plane systolic excursion (TAPSE) and septal annular plane systolic excursion (SAPSE) in a low-risk population. Methods: This prospective longitudinal study included healthy fetuses assessed from 18 to 40 weeks of gestation. Tricuspid annular plane systolic excursion, MAPSE and SAPSE were measured using anatomical M-mode and PW-TDI. The agreement between the two diagnostic tests was assessed using Bland–Altman analysis. Results: Fifty fetuses were included in the final analysis. Mean values of TASPE were higher than that of MAPSE. There was a progressive increase of TAPSE, MAPSE and SAPSE values with advancing gestation. For each parameter assessed, there was an overall good agreement between the measurements obtained with M-mode and PW-TDI techniques. However, the measurements made with M-mode were slightly higher than those obtained with PW-TDI (mean differences: 0.03, 0.05 and 0.03 cm for TAPSE, MAPSE and SAPSE, respectively). When stratifying the analyses by gestational age, the mean values of TAPSE, MAPSE and SAPSE measured with M-Mode were higher compared to those obtained with PW-TDI, although the mean differences between the two techniques tended to narrow with increasing gestation. Tricuspid annular plane systolic excursion, MAPSE and SAPSE measurements were all significantly, positively associated with gestational age (all P < 0.001). Conclusion: Fetal atrioventricular annular plane displacement can be assessed with M-mode technique, or with PW-TDI as the velocity-time integral of the myocardial systolic waveform. Atrioventricular annular plane displacement values obtained with M-mode technique are slightly higher than those obtained with PW-TDI
Serendipitous diagnosis of severe fetomaternal hemorrhage through maternal AB0 discrepancy
No full textDr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
- …
