Transient visualization of the uterus, mimicking a hypervascular soft tissue tumour in the pelvic region, in the blood flow and blood pool phases of a triple-phase bone scan, was seen in 78 of 91 females of reproductive age. It was noted in all cases of menstrual (n = 15), early ...

Ultrasound has been used in the identification of two different morphological patterns of polycystic ovaries, namely a peripheral cystic pattern and a general cystic pattern. The aim of this study was to evaluate whether patients with the peripheral form of polycystic ovaries showed different ovarian and uterine blood flow from ...

Little is known about the relationship between smooth muscle contractile activity and its blood supply. We have therefore investigated this in the rat uterus, using laser-Doppler flow measurement and intra-uterine pressure recordings. We found an inverse linear relationship between flow and contractile activity. There was no evidence for a critical ...

OBJECTIVE: To assess regional changes in ultrasound-derived indices of blood flow in the dominant human follicle after the plasma LH surge. DESIGN: A cross-sectional, prospective study. SETTING: Reproductive medicine unit at a university. PATIENT(S): Women attending an assisted conception clinic to determine the appropriate time to transfer previously frozen embryos ...

1. The objective of the present study was to determine whether arteriovenous anastomoses (AVA) are present in the uterine circulation of conscious, late-pregnant ewes. 2. Twenty late-pregnant ewes were assigned to two groups. In group 1, 15 microm coloured microspheres were injected into the uterine artery of the pregnant horn ...

We have previously reported the distribution and the forms of fluorides in the blood of men. This study is concerned with the distribution of fluorides in the blood of young women and sex-related differences in the fluoride metabolism related to the calcium metabolism keeping the postmenopausal osteoporosis in mind. The ...

This study was conducted to examine the correlation between uterine vascularity and natural history of uterine leiomyoma. Seventy women with leiomyoma participated in this study. Measurements of uterine and leiomyoma volume, as well as blood flow characteristics of the main uterine artery and leiomyoma arteries, were made every 3 months ...

We analyse the data accumulated on the description of the uterine kallikrein-kinin system in estrous cycle, pregnancy, pseudopregnancy and hormonal supplementation, and discuss the possible role of these findings in relationship to the vasoactive changes of gestation. We conclude that the evidence supports a participation of kallikrein in implantation and ...

To evaluate the vascular changes in ovaries affected by endometriomas 28 women with ovarian endometriosis underwent transvaginal ultrasound with color flow imaging and blood flow analysis of the ovarian artery before and after laparoscopic conservative treatment of the ovarian cyst. Mean pulsatility index (P.I.) and resistance index (R.I.) of the ...

Many experimental studies of the effects of placental blood flow on growth exist. Nevertheless, few of them deal with the relationship between impaired uterine blood supply, and cranial growth and sex differentiation. The object of the present study was to investigate the impact of intrauterine growth retardation (IUGR) on sexual ...

Transvaginal sonography with color flow mapping has been used in order to study various parts of uterine circulation during fertile period and postmenopause. The Doppler wave forms were analysed by pulsatility index and maximum systolic velocity of uterine artery and its ascending branches. A significantly lower vascular resistance was established ...

A case of placenta previa accreta was diagnosed at 28 weeks' gestation with use of power amplitude ultrasonic angiography, which showed an unusually intense blood flow within the placental sonolucent spaces and hypervascularity within the placental and surrounding tissues. High-velocity (> or = 15 cm/sec) turbulent venous-type flow was detected ...

OBJECTIVE: To compare the effects of estrogen with estrogen-androgen treatment on vaginal blood flow velocity and fingertip postocclusive hyperemic blood flow response. DESIGN: Prospective, randomized, parallel, double-blind study. SETTING: Healthy human volunteers in an academic research environment. PATIENT(S): Postmenopausal women receiving estrogen replacement therapy for at least 12 months and ...

OBJECTIVE: To investigate the changes in resistance indices of blood flow velocity waveforms of the umbilical artery (UmA-RIs) during variable decelerations (VDs) vs. early decelerations (EDs). METHODS: UmA-RIs were measured before and during uterine contractions in 30 cases with VDs, nine cases with EDs and 20 cases without decelerations. In ...

The increased use of blood transfusion, ultrasound evidence of postsurgical haematoma, the frequency of postoperative febrile morbidity of unknown cause and reports of these complications in large series which contain both abdominal and vaginal hysterectomy over the last 25 years, suggests that bleeding may be more common after vaginal hysterectomy. ...

Pigs may be susceptible to stress when they are strongly motivated to nest-build in a space-restricted environment. This study aimed to explore whether nest-building behaviour could be induced by prostaglandin F2alpha (PG) administration to pseudopregnant gilts and to determine whether induced behaviour and cortisol output differed between animals chronically placed ...

There is ample evidence from epidemiological studies that estrogen-replacement therapy protects postmenopausal women against cardiovascular disease. One explanation for this beneficial effect could be the improvement of blood flow under estrogen therapy. By using ultrasound and Doppler color flow mapping we demonstrated in the aorta of ovariectomized rabbits a significant ...

The ovarian response to 14 days of GnRH-analogue (GnRHa) application in patients with polycystic ovary syndrome (PCOS) was evaluated by measuring hemodynamic parameters and hormonal profile. Twenty patients with PCOS represented the study group, and 22 patients with normal menstrual cycle (NMC) the reference group. The resistance index (RI) of ...

The present study was carried out on 50 patients of Chronic renal failure (CRF), Majority of CRF patients had high frequency hearing loss, but inner ear changes were found to be irreversible even after dialysis. All cases had cochlear lesion. No relationship could be established between the level of blood ...

This review describes the current use of Doppler ultrasound to examine blood flow in the uterus and ovaries in infertile patients and during early pregnancy. The basics of Doppler ultrasound and the different methods of measuring blood flow are discussed from the viewpoint of the clinician who may be unfamiliar ...

The aim of this study was to determine the effect of a short-term ethinyl estradiol/levonorgestrel medication on blood flow in the uterine arteries in postmenopausal women in a prospective placebo-controlled double-blind study. Twenty-one healthy postmenopausal woman at least 2 years after menopause received 60 micrograms ethinyl estradiol (EE) for 14 ...

OBJECTIVE: To assess the change of uterine blood flow after Caesarean section. STUDY DESIGN: Doppler flow velocity waveforms were acquired from the uterine arteries and small arteries near the myometrial wound detected by transvaginal power Doppler ultrasonography in 23 patients on the 3rd, 6th and 9th postoperative days. RESULTS: The ...

A prospective study in patients undergoing in vitro fertilization treatment was conducted to assess whether any difference may be present in uterine blood flow between unexplained and mechanical infertility, before and during ovulation induction. The ascending branch of the uterine artery, the arcuate arteries, and the radial arteries were examined ...

In this study, we examined changes in vascular resistance contributing to increased ovarian blood flow in the pregnant rat. Ovarian blood flow was monitored in vivo using a venous outflow cannulation technique in nonpregnant rats and in pregnant rats at Day 16 and Day 22, and increased from 0.18 +/- ...

The objectives of the study were to use sheep as a model to determine whether a reduction in plasma calcium concentration similar to that observed during periods of postpartum subclinical hypocalcaemia in lactating dairy cattle might affect the blood flow to the ovaries. Different levels of hypocalcaemia were induced in ...

The role of transvaginal pulsed colour Doppler ultrasound in the assessment of ovarian vascularity was studied in 196 in-vitro fertilization (IVF) cycles. The changes in ovarian blood flow after gonadotrophin-releasing hormone agonist (GnRHa) down-regulation and human menopausal gonadotrophin (HMG) stimulation were determined. The data obtained showed that the ovarian blood ...

The use of epinephrine as a test dose for epidural analgesia in obstetrics remains controversial. Isoproterenol as a test dose may be efficacious in the parturient. However, the effects of isoproterenol on the uterine blood flow (UBF) and umbilical blood flow (UMB) in the parturient are unknown. In a randomized, ...

OBJECTIVE: To evaluate endometrial blood flow characteristics in response to estrogen replacement therapy (ERT) and tibolone in postmenopausal women and to correlate the resistance index (RI) with plasma estradiol levels. MATERIALS AND METHODS: Transvaginal color Doppler ultrasound examinations were performed in 72 asymptomatic, postmenopausal women who demonstrated endometrial thickness < ...

Diaspirin crosslinked hemoglobin (DCLHb: Baxter Healthcare Corp., Round Lake, IL, USA) is a biochemically stable hemoglobin based solution with excellent oxygen carrying capacity. Studies have been conducted in male rats to determine the effect of DCLHb on systemic and regional blood circulation. However, the cardiovascular effect of DCLHb has not ...

Regardless of whether fertilization occurs in vivo or in vitro, a large proportion of human embryos do not develop progressively through the pre-implantation stages or arrest development after implantation. This study examined the association between the chromosomal/spindle normality of the mature human oocyte and the dissolved oxygen content, vascular endothelial ...

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 ...

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 ...

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): ...

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 ...

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 ...

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. ...

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 ...

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, ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...