You searched for:"Sérgio Peixoto"
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Rev Bras Ginecol Obstet. 2006;28(8):460-466
DOI 10.1590/S0100-72032006000800004
PURPOSE: to assess the performance of lamellar body count compared to the shake (Clements) test in the prediction of fetal lung maturity in diabetics. METHODS: prospective study of 62 patients who underwent amniocentesis between the 26th and 39th week of pregnancy. Immediately after collection, the amniotic fluid sample was submitted to the shake test and lamellar body count. Deliveries occurred within three days of amniocentesis. Immature test results (absence of a complete bubble ring in the third tube for the shake test and less than 50,000 lamellar bodies) were confronted with the occurrence of pulmonary immaturity in the neonate (respiratory distress syndrome). The performance of both tests was compared using the chi2 test and p<0.05 was considered to be significant. RESULTS: seven infants had respiratory distress syndrome (11.3%). The lamellar body count and shake test were similar regarding sensitivity (100 vs 71.4%, respectively) and negative predictive value (100 vs 93.5%). Lamellar body count was superior as regards specificity (87.3 vs 52.7%, p=0.0001), positive predictive value (50 vs 16.1%, p=0.017), and accuracy (88.7 vs 54.8%, p<0.001). CONCLUSIONS: lamellar body count is a simple and accurate method of assessing fetal lung maturity. It performs slightly better than the shake test in terms of specificity, positive predictive value and accuracy, with the advantage of not requiring manipulation or reagents. Similar to the shake test, lamellar body count has a high-negative predictive value: mature results (50,000 or more) indicate thar the infant will not have hyaline membrane.
Summary
Rev Bras Ginecol Obstet. 2003;25(9):679-686
DOI 10.1590/S0100-72032003000900010
PURPOSE: to evaluate the first in vitro fertilization results at a medical university using low-cost programmed cycles. METHODS: from May to December 2002, 66 programmed cycles of in vitro fertilization were carried out using norethisterone acetate, clomiphene citrate and human chorionic gonadotrophin (hCG). The ovarian follicle aspiration was guided by ultrasonography, 34 to 36 h after the administration of hCG, and the embryo transfer, 48 h after puncturing. The diagnosis of clinical pregnancy was defined when a pulsating heart was detected by transvaginal ultrasonography. RESULTS: the cycle cancelation rate was 21.2%. An average of 2.8 follicles and 1.7 oocytes were obtained per puncture. In 79.6% of the punctured cycles it was possible to retrieve oocytes and 69% of them were fertilized. The number of embryos per transfer was 1.5. Some level of difficulty occurred in 10.2% of the aspiration procedures and 32.4% in the embryo transfer. The obtained pregnancy rate was 10,8% per transfer; however, the drug cost per transferred embryo was only R$ 96,00. CONCLUSION: the difficulty to begin an in vitro fertilization program in a medical school, not aiming at profits and to help a population without financial possibilities, became evident. After progressive experience, the cumulative pregnancy rate tends to be similar to that of reference centers, but with significantly lower costs and incidence of complications.