Search Results
Results 401 - 450 of 945
< 4 5 6 7 8 9 10 11 12 13 14 >
Cacciatore B - - 1997
OBJECTIVE: To determine the effects of gonadotropin-induced ovarian stimulation on the plasma levels of endothelin-1 as well as on uterine blood flow and endometrial thickness. DESIGN: Controlled cross-over clinical study. SETTING: Academic research environment. PATIENT(S): Eighteen volunteer infertile women (31.4 +/- 2.5 years, mean +/- SE) participating in an IVF-ET ...
Battaglia C - - 1997
The objective of this study was to determine whether amenorrheic women have more severe blood flow variations and clinical-endocrinological patterns in comparison with oligomenorrheic polycystic ovary syndrome (PCOS) patients. Twenty oligomenorrheic women (cycle length > 35 days; Group I), and 20 amenorrheic women (no vaginal bleeding for at least 6 ...
Moohan J M - - 1997
OBJECTIVE: To assess intraovarian blood flow in relation to the severity of ovarian hyperstimulation syndrome (OHSS) after controlled ovarian hyperstimulation. DESIGN: A prospective study. SETTING: Monash IVF, Clayton, Victoria, Australia. PATIENT(S): Thirty patients with OHSS after embryo or gamete transfer who also had sonographic evidence of ascites. MAIN OUTCOME MEASURE(S): ...
Kuo H C - - 1997
A prospective clinical study at the Infertility Clinic of National Cheng Kung University Hospital investigated the effect of aspirin on infertile women with impaired uterine perfusion. A total of 127 women with unexplained infertility or repeated failure with various assisted-conception techniques were enrolled. Uterine perfusion was assessed by Doppler ultrasound ...
Stefańczyk-Krzymowska S - - 1997
1. On Day 10 of the oestrous cycle in pigs, after laparotomy noradrenaline (NA), methoxamine (alpha 1-adrenomimetic, M), Prazosin (alpha 1-adrenolytic, Pr) in total doses of 4 mumol, and saline were infused (10 min) into the superficial layer of mesovarium on both sides of the ovarian pedicle vasculature, close to ...
Ahluwalia A - - 1997
The changes in uterine artery resistance to blood flow were studied during a normal ovulatory cycle (control) and during a cycle on the combined oral contraceptive pill in 10 healthy women, aged 18-35 years, using transvaginal color Doppler imaging. Ovulation was monitored using ultrasound and hormonal assays during both cycles. ...
Tekay A - - 1997
Intraobserver variation in transvaginal color Doppler ultrasound measurements in ovarian tumors was evaluated in 20 women selected from a group of patients undergoing surgical exploration for an ovarian lesion. Only those cases who were suspected of having a benign ovarian tumor other than a unilocular simple cyst were recruited. Pulsatility ...
Garris D R - - 1997
The effects of experimentally-induced, uterine vascular restriction on uterine blood flow (UBF) and uterine blood volume (UBV) capacity, as well as the dependent intrauterine oxygen tension (IUpO2) measurements used as an indication of luminal nutrient availability, were examined using ovariectomized, estrogen (E)-treated guinea pigs. Following 3 days of E treatment, ...
Ryo E - - 1996
OBJECTIVE: To evaluate the inferior vena cava compression and its influence on the uterine and umbilical artery blood flow in the late second trimester when the mother is supine. METHODS: The inferior vena cava diameter was measured by ultrasound B mode scan, and Doppler flow velocimetry of the uterine and ...
Laursen E M - - 1996
The aim of this study was to investigate the possible changes in uterine artery flow velocity during puberty and young adulthood. In a cross-sectional study, 133 healthy volunteers aged 6.7 to 25.4 years were investigated. Pubertal development according to the Tanner classification was recorded in each subject. Uterine arteries were ...
Zaidi J - - 1996
OBJECTIVE: To assess whether Doppler indices of intraovarian blood flow are related to the subsequent follicular response in an in vitro fertilization (IVF) program. METHODS: One hundred five women underwent ultrasonographic assessment of ovarian morphology, transvaginal color Doppler measurement of intraovarian blood flow and immunoassay of serum FSH during the ...
Lunenfeld E - - 1996
This study was undertaken to investigate intraovarian blood flow during the early follicular, periovulatory and mid-luteal phases, during spontaneous and stimulated ovarian cycles. Transvaginal ultrasonography with colour flow imaging was used to measure the pulsatility index in eight patients with spontaneous cycles, 20 patients undergoing induction of ovulation with clomiphene ...
Nargund G - - 1996
The principal aim of the study was to relate ultrasound-derived indices of blood flow in individual follicles on the day of, but before, the administration of human chorionic gonadotrophin (HCG) to the subsequent recovery of oocytes and the production of preimplantation embryos. Data were obtained from 21 women (aged 29-43 ...
Semm K - - 1996
The CISH-technique per laparotomiam, vaginam, or pelviscopiam which sometimes may be limited to a TUMA procedure should replace classic total hysterectomy is approximately 80% of the cases. Where hysterectomy is indicated CISH and TUMA reduce the feeling of disfiguration many women feel after total hysterectomy. The uterine artery is not ...
Olofsson P - - 1996
Our objective was to study uterine and umbilical artery flow resistance during the oxytocin challenge test (OCT). The study population was 21 women with suspected placental insufficiency; one woman was excluded because of a positive OCT with reactive fetal heart rate pattern. We carried out simultaneous electronic fetal heart rate ...
Fraser I S - - 1996
Recent research has not been able to demonstrate close endometrial morphological correlations with specific abnormalities of menstrual bleeding, but has pointed to an increasing number of molecular mechanisms that may be involved in the occurrence of certain forms of abnormal uterine bleeding. Ovulatory and anovulatory dysfunctional uterine bleeding (DUB) and ...
Anteby E Y - - 1996
Nitric oxide (NO) has been suggested to be involved in ovarian physiology. Our aim was to study follicular nitrite and nitrate (NO3/NO2) levels in women undergoing in-vitro fertilization (IVF), and to examine their relationship to follicular size, oestradiol concentrations, and ovarian artery and intra-ovarian blood flow as measured by Doppler ...
Cutler W B - - 1996
The objective of the study was to determine whether coitus during menstruation in perimenopausal women is associated with increased menstrual flow defined as either heavier flow, more days of flow, or both. Initial interviews for the Stanford Menopause Study were conducted locally with 160 perimenopausal women. Six weeks later, additional ...
Sosić A - - 1996
OBJECTIVE: To evaluate the effects of different clinical and anatomical factors on the vascularity of uterine myomas METHODS: The study group included 195 patients, 153 premenopausal and 42 postmenopausal. Four hundred five myomas, 316 in the first group and 89 in the second, were studied by color Doppler ultrasound. Differences ...
Hofstaetter C - - 1996
BACKGROUND: Previously, we have found uterine artery blood velocimetry performed with Doppler ultrasound without vessel visualization to be a poor predictor of perinatal outcome. The aim of this study was to ascertain whether the combination of color Doppler imaging with the method would improve its predictive value. METHODS: In a ...
Dickey R P - - 1996
The purpose of this study was to examine the relationship of uterine blood flow to serum estradiol and progesterone during early pregnancy. Recumbent uterine artery average velocity, diameter, blood flow volume and uterine and spiral artery resistance were measured using vaginal Doppler ultrasound 118 times in 43 patients during gestational ...
Makevnina L G - - 1996
Blood plasma kininogen (K), kininases (KS), kallikrein (KK), prekallikrein (PKK), and PGF2a were estimated in the common circulation of pregnant women during late saline-induced abortion and also in retroplacental blood after foetus delivery. The results provide evidence for intra-uterine kinin release from circulating blood K by locally activated KK from ...
Oyesanya O A - - 1996
OBJECTIVE: To detect and quantify follicular vascularity before hCG administration in women undergoing IVF-ET. To correlate follicular vascularity with the oocyte recovery rate after direct follicle aspiration. DESIGN: A prospective, longitudinal study of consecutive women undergoing IVF-ET at the assisted conception unit of King's College Hospital, London and having at ...
Aleem F A - - 1996
OBJECTIVE: To determine blood flow characteristics of ovarian and uterine arteries in patients with endocrinologically and clinically confirmed polycystic ovary disease (PCOD) in comparison with blood flow parameters observed in patients with spontaneous ovulatory cycles. DESIGN: Controlled clinical study. SETTING: Patients from Infertility Service in a tertiary care institution. PATIENTS: ...
Tekay A - - 1996
The Doppler blood flow characteristics of uterine arteries were evaluated prospectively in 57 patients undergoing embryo transfer. A total of 32 women underwent frozen-thawed (FT) embryo transfer during a spontaneous menstrual cycle (FT-embryo transfer), and 25 patients underwent in-vitro fertilization treatment (IVF-embryo transfer). The endometrial thickness, pulsatility index (PI), maximum ...
Luks F I - - 1996
Open fetal surgery predictably results in postoperative uterine contractions and often in premature labor, but its intraoperative effects on the uterus are not known. In 10 pregnant ewes (108 to 115 days' gestation), uterine artery flow, uterine venous oxygen saturation, arterial saturation, and uterine electromyography were recorded simultaneously (control). Six ...
Zaidi J - - 1996
Intraovarian blood flow was assessed by transvaginal color and pulsed Doppler ultrasound prospectively in six women during the periovulatory period. All patients had regular ovulatory menstrual cycles and a mid-luteal serum progesterone level consistent with spontaneous ovulation in the preceding cycle. Each patient underwent serial transvaginal ultrasound examination and Doppler ...
Fujikura T - - 1996
OBJECTIVE: To measure blood gases in uterine venous blood and maternal and fetal blood from the placenta, and to characterize gas exchange in the intervillous space. METHODS: Blood gas measurements were performed immediately after collecting placental and uterine blood from the subchorial and marginal lakes, from the chorionic vein and ...
Chua S - - 1996
In 27 women, uterine activity in the third stage of labour was correlated with blood loss measured quantitatively during the same period of time. Myometrial activity was reflected by total intrauterine pressures measured using a Gaeltec catheter tipped pressure transducer inserted transcervically within 5 min of delivery of the placenta. ...
Nakamura H - - 1996
Effects of whole-body vibration on normal pregnancy were studied in the rat. Uterine blood flow and five endocrine functions corticosterone (CS), estradiol (E2), progesterone (P), prostaglandin E2 (PGE2) and prostaglandin F2 alpha (PGF2 alpha) concentration were measured in rats exposed to whole-body vibration with an acceleration of 10 m.s-2 at ...
Hill J B - - 1996
Recent characterization of luteinizing hormone++ (LH)/human chorionic gonadotropin (hCG) receptors in uterine vascular tissue, evidence that expression of these receptors is cyclic in nature, and demonstration of a correlation between hCG level and uterine vascular resistance lead us to investigate the effect of hCG administration on blood flow in reproductive ...
Kupesić S - - 1996
Transvaginal color Doppler has made possible to study ovarian and uterine perfusion in non-pregnant and pregnant patients, thus advancing the understanding of the early human development. RI of follicular blood flow starts decreasing prior to ovulation reaching its nadir at ovulation. It is considered that apart from hormonal factors the ...
Ziecik A J - - 1996
This experiment was designed to test the hypothesis that human chorionic gonadotropin (hCG) can directly influence uterine blood flow in pigs. In the study, 18 crossbred gilts (95-100 kg) which had exhibited at least one estrous cycle were used: 8 cyclic gilts in the luteal phase of the estrous cycle ...
Hsu C C - - 1995
OBJECTIVE: To investigate the effect of clomiphene citrate on the uterine blood flow in women with unexplained infertility. METHODS: Twenty-one women who had normal uterine blood flow (pulsatility index [PI] less than 3 from the LH peak to the middle luteal phase of a natural ovulatory cycle) were enrolled in ...
Dickey R P - - 1995
To determine if oestradiol and progesterone concentrations are related to uterine blood flow in early pregnancy, we measured these hormones at the time of vaginal Doppler ultrasound before and after the beginning of intervillous circulation in spontaneous pregnancy (group I), after clomiphene citrate administration (group II), and after clomiphene citrate ...
Dickey R P - - 1995
The embryonic period of development is characterized by marked variability in the rate of embryonic growth and development. Differences in uterine blood flow may explain this variability. We investigated the relationship between uterine artery blood flow volume (VOL), uterine artery pulsatility index (UA-PI), uterine artery resistance index (UA-RI), spiral artery ...
Ochi H - - 1995
The aim of the present study was to simulate the pathological uteroplacental circulation observed in complicated human pregnancies in the pregnant ewe and to analyze its velocimetric changes. Four pregnant ewes at 16-17 weeks of pregnancy were used in the study. Micro-beads (Gelfoam) were administered stepwise into the uterine artery ...
Wentzel P - - 1995
The uterine blood flow to individual implantation sites was evaluated in early normal and diabetic rat pregnancy, and related to maternal metabolic state, length of gestation, and embryonic outcome. The aim was to search for a possible coupling between the flow rate and embryonic development. We studied pregnant rats of ...
Kurjak A - - 1995
OBJECTIVE: To measure the flow velocity of the ovarian, uterine, radial, and spiral arteries in different age groups. DESIGN: Serial measurements throughout the menstrual cycle in normal cycling women with documented fertility were compared with those in postmenopausal patients with and without hormone replacement therapy (HRT). SETTING: Department of Obstetrics ...
Aleem F A - - 1995
The objective of this study was to correlate, during 12 weeks of therapy with gonadotropin releasing hormone agonist (GnRH-a), the chronological effect and the hemodynamic changes on the uterine artery and the leiomyometrial supplying vessels. Twenty-three premenopausal women with clinically diagnosed uterine leiomyomas received 3.75 mg of leuprolide acetate intramuscularly ...
Dickey R P - - 1995
Uterine blood flow volume has been thought to increase in a linear fashion throughout pregnancy, but previous studies in early pregnancy may have not been performed often enough or in sufficient numbers of patients. We measured uterine artery blood flow volume, average velocity, vessel cross-sectional area, resistance index, and spiral ...
Pakarinen P - - 1995
To evaluate non-invasively the role of levonorgestrel releasing devices in direct contact with the endometrium on menstrual spotting and endometrium inactivation, we inserted levonorgestrel releasing devices (20 micrograms/24 h) either into the cervical canal or the uterine cavity of 30 fertile women. Both before insertion and over the following 3 ...
Glock J L - - 1995
OBJECTIVE: To determine whether color flow pulsed Doppler analysis of corpus luteum blood flow in normal cycles differs from cycles with a luteal phase defect. DESIGN: A prospective study of natural ovarian cycles. SETTING: The University of Vermont Reproductive Endocrinology and Infertility Service. PATIENTS: Ten women with regular menstrual cycles ...
Zaidi J - - 1995
Blood flow changes in the ovarian stroma of women embarking on in-vitro fertilization treatment were assessed on day 2 or 3 of the menstrual cycle using colour and pulsed Doppler ultrasound. Women were divided into three groups: group 1, 63 women with regular, ovulatory menstrual cycles and normal ovaries on ...
Sladkevicius P - - 1995
The aim of this study was to elicit reference data representative of normal findings at transvaginal gray-scale and Doppler ultrasound examination of the uterus and ovaries in postmenopausal women. A total of 144 asymptomatic postmenopausal women with normal findings at clinical gynecological examination were included in the study. They underwent ...
Yan Y L - - 1995
Second trimester assessment of uterine blood flow has been advocated as a predictor of subsequent adverse perinatal outcome. The reproducibility of uterine artery resistance index, as assessed using colour Doppler imaging, was investigated. Two observers, both of whom were experienced in colour Doppler assessment of uterine artery flow velocity waveforms, ...
Nielsen M K - - 1995
Lines of mice, selected for 21 generations using alternative criteria to increase litter size, were evaluated for uterine mass and uterine blood volume to help explain differences in uterine capacity. For this study, mice were sampled from Generation 27, the sixth generation after relaxation of selection. Mice came from all ...
Bower S J - - 1995
OBJECTIVE: Our purpose was to investigate whether acute alterations of amniotic fluid volume affect uteroplacental perfusion. STUDY DESIGN: Three groups of patients of comparable gestational age were studied in a fetal medicine referral unit: (1) eight pregnancies with severe polyhydramnios because of twin-twin transfusion syndrome undergoing therapeutic amnioreduction, (2) seven ...
Strigini F A - - 1995
OBJECTIVE: To determine the effects of induction of multiple ovulation and of luteal P supplementation on the impedance to blood flow in the uterine and intraovarian arteries during the luteal phase. DESIGN: A prospective study using transvaginal color flow Doppler imaging. SETTING: A university-based infertility center. PATIENTS: Fifty-six women with ...
Zaidi J - - 1995
Uterine artery blood flow was assessed by transvaginal colour and pulsed Doppler ultrasound prospectively in six women during the peri-ovulatory period. All patients had regular ovulatory menstrual cycles and a mid-luteal serum progesterone consistent with spontaneous ovulation in the preceding cycle. Each patient underwent serial transvaginal ultrasound examination and Doppler ...
< 4 5 6 7 8 9 10 11 12 13 14 >