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Biomedical subjects

O Bakos

Publications and source records attributed to O Bakos.

28 records · Page 2Linked to original sources
PubMed1991

Direct intraperitoneal insemination--clinical results and comparison between two methods of sperm preparation.

OBJECTIVE: To compare sperm preparation with a new self-migration method in sodium hyaluronate and a centrifugation/swim-up method and to study the efficiency of direct intraperitoneal (IP) insemination. STUDY DESIGN: Sodium hyaluronate and centrifugation/swim-up were used randomly for direct IP insemination in alternating cycles. Treatments were given with an interval of at least one untreated cycle. When ovulation occurred on weekends, the patients received only controlled ovarian hyperstimulation. SETTINGS: Department of Obstetrics and Gynecology University Hospital, Uppsala, Sweden. PATIENTS: Seventy-nine couples with unexplained infertility (n = 53), endometriosis (n = 17), and cervical factor (n = 9). INTERVENTIONS: Controlled ovarian hyperstimulation was accomplished by clomiphene citrate and gonadotropins. MAIN OUTCOME MEASURES: Sperm parameters and pregnancy rates. RESULTS: Sodium hyaluronate and centrifugation/swim-up resulted in similar conception rates, but sodium hyaluronate recovered more motile spermatozoa than centrifugation/swim-up (P less than 0.0001). The number of patients who became pregnant after direct IP insemination or controlled ovarian hyperstimulation only was significantly higher than that observed after untreated cycles (P = 0.00001 and P = 0.008, respectively). CONCLUSIONS: Sperm preparation with sodium hyaluronate can be used as an alternative to centrifugation/swim-up. Direct IP insemination appears to increase the cycle fecundity, but whether direct IP insemination/controlled ovarian hyperstimulation is more effective than controlled ovarian hyperstimulation alone has yet to be proven.

Adult↗
PubMed1990

Ovarian function during use of a levonorgestrel-releasing IUD.

Ovarian function was studied for two complete menstrual cycles in 9 regularly menstruating women and for 8 weeks in three amenorrhoeic women who had used levonorgestrel-releasing IUDs (LNG-IUD) for more than four years. Nine patients using copper IUDs (Nova-T) were studied for two complete menstrual cycles as controls. According to progesterone levels, 15/17 cycles in women using LNG-IUDs were ovulatory, whereas only 8/17 cycles showed normal follicular growth and rupture as judged by ultrasound. In ovulatory cycles, the peak progesterone levels were lower than in the controls. The preovulatory estradiol and LH peak levels were also lower than in control subjects. SHBG levels were lower in LNG-IUD users than in copper IUD users. It is concluded that, although the dose of levonorgestrel released from the IUD is very low, it probably exerts an effect on the gonadotrophin secretion, which disturbs follicular development in many of the women studied, which in addition to the local effect on the endometrium, contributes to its high contraceptive efficacy.

Adult↗
PubMed1987

Induction of labor: a prospective, randomized study into amniotomy and oxytocin as induction methods in a total unselected population.

All women (n = 223) scheduled for induction of labor were randomized into start with oxcytocin infusion (O) or amniotomy (A). After 4 h an assessment of the progress and prognosis was made. If the progress was not acceptable O was added to A and A to O. Oxcytocin alone showed the lowest frequency of delivered patients. The "amniotomy only" group showed the shortest duration of delivery. The frequency of complications was low but somewhat higher when the initial step was oxcytocin. Oxcytocin alone is not a good method for induction. Early evaluation of the progress and prognosis of the induction is difficult. The combination of amniotomy and oxcytocin seem to be more essential than the choice of initial step. If, however, an infusion of oxcytocin is the first proceeding, amniotomy should be added on a routine basis and without delay. Bishop score is not a conclusive measure of the readiness of uterus to go into labor. Parity may partly be the explanation but other today unknown factors are probably involved in the inducibility.

Amnion↗
PubMed1987

Pathologic torsion of the pregnant uterus.

Torsion of the human pregnant uterus is a very rare complication. This presentation describes repeated episodes of pathological CTG patterns in a woman whose uterus showed a levotorsion of 150 degrees at cesarean delivery. To our knowledge, such a pattern has never previously been ascribed to uterine torsion.

Adult↗
PubMedDate not supplied

Very prolonged membrane rupture and delayed delivery of the second twin.

OBJECTIVES: To present the complications of twin pregnancies with delayed delivery of the second twin, 32 days after expulsion of the first twin. CASE: A 29-year-old woman with a twin pregnancy at gestational age 13 weeks and 5 days presenting with a rupture of the membranes of the first twin. At 21 completed weeks the umbilical cord prolapsed and at 23 weeks the first twin was stillborn with the placenta in the uterus. After maternal septicemia the second twin was delivered by caesarian section, at 28 complete weeks, liveborn. The mother and child were discharged from hospital 10 weeks later, corresponding to 38 completed weeks of pregnancy. CONCLUSIONS: A very early premature rupture of membrane (PROM) occurs more often in twin pregnancies. The delivery of one twin most often results in expulsion of the second twin. With PROM there is a great risk of chorioamnionitis, as in our case, which resulted in an acute cesarean section. In this case, conservative management achieved a viable fetus in spite of very early and serious complications.

Adult↗
PubMedDate not supplied

Fetal cardiocentesis in care of severe Kell immunisation.

This case report demonstrates how severe a Kell immunisation can be. Fetal anemia and hydrops fetalis in the second trimester required six intrauterine transfusions, two by cardiocentesis. At 4 years of age the child has shown no abnormalities.

Adult↗
PubMedDate not supplied

Intrauterine cephalocentesis: a case report.

This case presents a woman with a fetus having a large hydrocephalus and other lethal malformations. The problem was how to avoid an unnecessary cesarean section at delivery because of the breech position of the baby. The solution was prenatal ultrasonographic-guided cephalocentesis after which a vaginal delivery could take place without any complications for the mother.

Abnormalities, Multiple↗