As sport began to practice in the 1970s (Jake Burton Carpenter of the famous mark Burton, Chuck Barfoot and Tom Sims creator were the pioneers). However, the roots of snowboarding begin with the snurfer (a kind of sled). The snurfer was invented in the 1960s by Sherman Poppin. Jake Burton was involved in a career of snurfers then had the idea of putting a retention device on your tables. Thus began to win these races.
But the evolution of the snurfer did not stay here, Jeff Greell and Demetre Malovich introduced important factors which made that we can today enjoy snowboarding. Places of interest in the snowboarding world is considered Olympic sport from the Nagano Winter Olympics in 1998. Practiced in almost all over the world, although there are more suitable snow resorts for snowboard practice. Avoriaz in the French Alps, Whistler in Canada, Aspen in United States, Zermatt in Switzerland, Cerro Catedral in Argentina, Grandvalira, Sierra Nevada and Baqueira-Beret in Spain, are some of the most famous ski resorts in the world. There are some havens where that sport becomes a unique framework of Virgin snow and miles of track to be able to slide into a table. In particular, in the Alps Swiss there is a magnificent tracks that will delight any fan. We also find places of interest for snowboarding as the tracks of the catalan Pyrenees and Sierra Nevada in Granada in Spain.
Baqueira Beret, La Molina, Candanchu or Navacerrada, offer us interesting options to enjoy snowboarding. In many of these classes are taught with instructors specializing in the practice of snowboarding at quite affordable prices. If we move a little further, to countries such as Chile, Argentina and Patagonia area, you can also practice with a level of exceptional quality. However, to reach the Mecca of snowboarding worldwide, we must move us to Canada and United States. This country annually celebrates various snowboarding competitions in the numerous ski slopes scattered throughout its territory. The most famous snowboarder is undoubtedly Shaun White winning Olympic medal in the winter games of Turin 2006. Check out CEO Ford Motor Co. for additional information. How in extreme skiing, the athlete chooses the path where slipping, and can thus down a mountain sites where others do not dare. But not only is there this possibility, also in this sport there are jumps and free falls that startle (dropping 15 meters could be normal). Where it offers one broader range of possibilities this sport, is jumping, being a spectacular sport. There are several specialties: speed, Super-G, freestyle and halfpipe (a snow slide to a half cylinder shape, whose walls are used for performing stunts, jumps and figures. Those seeking more information can find here everything related to the world of snowboarding: original author and source of the article
Diagnostic ultrasound criteria was the display of an image of bright two or three parallel lines arranged in successive segments, circling the fetal10 neck. Used ultrasound equipment brand Medison Sonoet, model 5000, 3.5 MHz, with biconvex transducer electronic and thermal paper printer camera brand Sony. The standard of comparison was direct viewing of the presence or absence of circular cord during vaginal delivery or cesarean section. Statistical analysis to evaluate discordance between the use and the gold standard was the test of McNemar square Xi. Center for Environmental Health understood the implications. For the evaluation of the association between circular cord and scores of Apgar score at birth, exact test of Fisher, as well as to evaluate the association with pregnancy resolution via are used. For the evaluation of the diagnostic test was carried out calculations of sensitivity and specificity, with their confidence intervals of 95%, in addition to the positive and negative predictive values, as well as test accuracy and likelihood ratio. A P value of equal to or less than 0.05 was considered significant.
RESULTS General characteristics of the 57 patients studied were the following: the average age of the patients was 25.5 years, 36.8% of patients was primigesta (n = 21), 17.5% secundigesta (n = 10), 46.6% had three or more pregnancies (n = 26). All patients were enrolled at term, in effective labor and uncomplicated, placenta Placentae, membranes intact. The resolution of the birth was vaginal in 80% of patients (n = 47) and by caesarean section in 20% (n = 10). The cesarean section indication was fetal distress acute in 50% of cases (n = 5), cephalopelvic disproportion in 30% (n = 3), and the remaining 20%, one was by prolonged second stage and another by dystocia of contraction. Of the babies born by vaginal delivery, 7 had circular lace, and of those born by caesarean section, 10 had circular cord. The analysis with Fisher’s exact test showed a statistically significant association between circular cord and cesarean section (p = 0, 000468). The General characteristics of the RN were 3,350 more or less 0,245 kg weight, 63 male and 51 female. The proportion of RN with Apgar score > 8 was 91.
OBJECTIVE: Comparing the diagnostic capacity of the abdominal ultrasound in detection of circular cord. Design: Analytical clinical study. MATERIAL and methods: We studied 57 patients with pregnancy at term and in labor. Prior to his hospitalization, to each patient abdominal obstetric ultrasonography (use), was conducted him to identify the presence or absence of lace circular, which was compared to the findings at the time of childbirth or caesarean section (gold standard). RESULTS: The prevalence of circular cord in full-term pregnancies diagnosed by use was 21.1%. Test sensitivity was 80% (CI 95%, 72.7 to 87.3), 96% (CI 95%, 92.9 to 99.1) specificity and positive and negative predictive values were 87% and 94%, respectively. The accuracy of the test was 92%. The square Xi of McNemar for analysis of the discrepancies between the two tests was not significant (p = 0, 7236).
The reasons for likelihood for positive and negative results were 20 and 0.20, respectively. CONCLUSIONS: The study ultrasound during labor for the diagnosis of circular of lace is highly specific (96%), which allows you to be used as a screening test to identify high risk with lace circular pregnancies. Key words. Ultrasound; Umbilical cord; Circular cord. SUMMARY objective: To compare the diagnostic ability of abdominal ultrasounito detect fetal nuchal cord.
DESIGN: Clinical analytical study. MATERIAL AND METHODS: Fifty-seven term pregnant patients in work had abdominal ultrasound (US) on admission in order to identify fetal nuchal cord and compare such finding with outcome at delivery or cesarean-section (gold standard). RESULTADOS: Nuchal cord prevalence diagnosed by ultrasound was 21.1%, with 80% sensitivity (95% CI 72.7 to 87.3), 96% specificity (95% CI 92.9 to 99.1), and positive and negative predictive values of 87% and 94%, respectively. Test accuracy was 92%. McNemar discordance analysis between obstetric US s and gold standard was not significant (p = 0, 7236) and the likelihood ratios for positive and negative results were at 20 and 0.20, respectively.