Endometrial perfusions were measured by Doppler ultrasound to evaluate the influence of spontaneous menstrual cycles and to study the effect of clomiphene citrate. Flow waveforms in right and left uterine arteries were obtained by using transvaginal color Doppler ultrasonography in infertile women with 60 spontaneous menstrual cycles and 37 clomiphene ...

OBJECTIVE: To investigate the correlation of blood flow detected by color Doppler sonography in the endometrial-subendometrial unit with pregnancy outcome of IVF-ET treatments. DESIGN: Prospective clinical study. SETTING: University setting. PATIENT(S): Six hundred twenty-three patients selected prospectively on the day of ET. INTERVENTION(S): Transvaginal ultrasound examination was performed before ET. ...

OBJECTIVE: To assess the safety and efficacy of ritodrine and nitroglycerin for uterine relaxation during cesarean section with a breech-presenting fetus, performed under nongeneral anesthesia. STUDY DESIGN: A retrospective review of all breech singletons delivered by cesarean section under epidural anaesthesia in a two-year period. The study groups consisted of ...

Arteries, veins, capillaries and lymphatic vessels situated in the mesovarium and mesosalpinx of domestic animal species (pig, cow, sheep) form the periovarian vascular complex. Particular components of the periovarian vascular complex interact functionally and morphologically creating a specific environment for numerous physiological processes. The complex plays an essential role in ...

The paper presents a new theory on the physiological mechanism of initiation of luteolysis, function of endometrial cells and protection of corpus luteum. This theory is based on previous studies published by the authors and their coworkers on the retrograde transfer of PGF2alpha in the uterine broad ligament vasculature during ...

Uterine and ovarian blood flow was investigated in four mares during two consecutive estrous cycles using transrectal color Doppler sonography. The uterine and ovarian arteries of both sides were scanned to obtain waves of blood flow velocity. The pulsatility index (PI) reflected blood flow. There were significant time trends in ...

OBJECTIVE: The aim of our study was to investigate early placental circulation development and spiral and uterine artery flows in normal 1st-trimester pregnancies. METHODS: A prospective study of intervillous and spiral artery flows in 49 normal pregnancies (5-10 weeks of amenorrhea) was performed. Transvaginal color and pulsed-wave Doppler techniques (6-MHz ...

Transrectal Doppler ultrasound was used for the noninvasive investigation of uterine blood flow in three cows during pregnancy. The uterine arteries ipsi and contralateral to the conceptus were scanned monthly. Blood flow was reflected by the following parameters: resistance index (RI), time-averaged maximum velocity (TAMV), diameter of the vessel (D) ...

The aim of the present study was to investigate the mechanism of the retrograde transfer of ovarian steroid hormones from the ovarian lymphatic and venous effluent to the arterial blood supplying the ovary. In the first experiment, reproductive organs were collected from gilts in the luteal (n = 10) and ...

BACKGROUND: Our study was designed to evaluate whether ovarian antral follicle number, ovarian volume, stromal area and ovarian stromal blood flow are predictive of ovarian response and IVF outcome. A total of 56 women with normal basal serum FSH concentrations who had no history of ovarian surgery, no ovarian and/or ...

This was a prospective comparative clinical study to test the hypothesis that the flow intensity of the ovarian stroma decreases in the order of the aging process. A total of 100 consecutive women who came to our outpatient clinic for Pap smear examination were recruited. They were divided into three ...

We have previously demonstrated that maternal cocaine injections result in a gradient of fetal brain cocaine levels that decrease as a function of the fetuses' proximity to the ovaries at embryonic (E) day 15. Our prior data suggest that cocaine-induced vasoconstriction may (1) limit cocaine's entry into the brain and ...

The objective of this experiment was to determine the effects of flow cytometric sorting and freezing on stallion sperm fertility. A 2 x 2 factorial design was used to delineate effects of flow sorting and freezing spermatozoa. Oestrus was synchronised (July-August) in 41 mares by administering 10 ml altrenogest (2.2 ...

Our purpose was to verify whether the blood flow impedance of the ovarian stromal artery in transvaginal color Doppler ultrasonography can predict the in vitro fertilization and embryo transfer (IVF-ET) outcomes. Transvaginal color Doppler ultrasonographic examinations were performed in 99 patients undergoing controlled ovarian hyperstimulation (COH) for IVF-ET. The pulsatility ...

One of the postulated main luteolytic actions of prostaglandin (PG) F(2 alpha) is to decrease ovarian blood flow. However, before Day 5 of the normal cycle, the corpus luteum (CL) is refractory to the luteolytic action of PGF(2 alpha). Therefore, we aimed to determine in detail the real-time changes in ...

OBJECTIVE: To determine whether Doppler flow measurements are useful in predicting variables associated with uterine fibroid embolization, including shrinkage of the uterus and myomas, adenomyosis, and uterine fibroid embolization failure. METHODS: A group of 227 patients with menorrhagia or postmenopausal bleeding secondary to uterine myomas were evaluated with uterine artery ...

Degenerative changes occur relatively frequently in uterine leiomyomas. Morphologic changes such as necrosis, hyalinization, and alterations in cellularity are described after uterine artery embolization. A modified method to interrupt the uterine blood supply is laparoscopic bipolar coagulation of uterine vessels (LBCUV). Although the success rate is good, occasional patients require ...

We investigated the prediction of the ovarian response to superovulation using progesterone (P4) determination in Chios ewes. During the estrus period. estrus synchronization and multiple ovulations were induced in 100 non-pregnant, non-lactating Chios ewes by a combination of FGA-impregnated intravaginal sponges and 8.8 mg of ovine FSH. Laparoscopic insemination was ...

OBJECTIVE: To evaluate the role of overdistended uterus on the uterine artery (UA) blood flow velocimetry by comparing UA Doppler in patients with idiopathic hydramnios to patients with normal amniotic fluid (AF) volume. METHODS: Pulsatility index (PI) of both UAs was determined prospectively between 26 and 41 weeks of gestation ...

Cryostat sections of arterial and venous vessels from various size branches of the uterine artery and utero-ovarian vein of the pig mesometrium in different phases of the estrous cycle were stained immunohistochemically for endothelial nitric oxide synthase (eNOS), endothelin-1 (ET-1) and endothelin B receptor (ETB-R) using ABC method. Immunoreactivity was ...

The aim of the present study was to measure clitoral artery blood flow throughout the menstrual cycle and in oral contraceptive users. We recruited healthy young women (n = 19, age range: 21-28 years; body-mass index: 18-23 kg/m2) without sexual dysfunction (Female Sexual Functioning Index criteria; Rosen et al., 2000). ...

OBJECTIVE: To investigate the changes in serum ovarian hormone levels and ovarian artery blood flow rate by Doppler ultrasonography following laparoscopic tubal sterilization. METHODS: Laparoscopic tubal sterilization have been performed on 13 voluntary subjects between the sixth and eighth days of the menstrual cycle. Serum ovarian hormone levels and ovarian ...

Postpartum haemorrhage remains in the top five causes of maternal deaths in both developed and developing countries. Persistent blood loss of more than 1000 ml should prompt predetermined measures to achieve resuscitation and haemostasis. A protocol including guidelines is given and volume replacement is discussed. The range of medical and ...

Abnormal uterine bleeding (AUB) is one of the most common disorders encountered by the gynecologist. Several drugs have been demonstrated to decrease menstrual bleeding in patients with menorrhagia. Non-steroidal anti-inflammatory drugs will decrease bleeding by 30% to 50%. Oral contraceptives may be useful to stop acute bleeding and will decrease ...

Musk xylene (MX), musk ketone (MK), musk ambrette, musk moskene, and musk tibetene are synthetic fragrances. Between 1994 and 1996 these five nitromusk compounds (NMCs) were tested in the blood of 152 women who consulted the Endocrinological Department of the University Hospital of Obstetrics and Gynecology, Heidelberg, Germany, because of ...

The reproductive organs of Florida manatees (Trichechus manatus latirostris) are surrounded by thermogenic locomotory muscles and insulating fat. Manatees are reported to maintain core body temperatures of 35.6 degrees -36.4 degrees C, temperatures known to interfere with production and maturation of viable sperm in terrestrial mammals. We describe two novel ...

Massive ovarian edema is a rare cause of ovarian enlargement in young women. We report the case of a 20-year-old woman with unilateral massive ovarian edema with findings on ultrasound of an enlarged policystic ovary and pedicle arterial and venous blood flow observed with color and pulsed wave Doppler examination. ...

OBJECTIVE: To evaluate arterial and venous intraovarian blood flow in follicle stimulating hormone-stimulated cycles. SUBJECTS AND METHODS: This was a prospective study of 76 follicle stimulating hormone-stimulated cycles carried out in 39 infertile patients who were included in a timed intercourse or intrauterine insemination program in a referral center for ...

BACKGROUND: Presently, the only sonographic parameters used to follow puberty in girls are size and morphology of the uterus and ovaries. Doppler of the uterine artery appears a useful complementary parameter to follow puberty. OBJECTIVE: To determine the potential contribution of Doppler evaluation of the uterine artery in girls around ...

Pharmacological studies using the Doppler technique revealed that pregnancy decreases the systemic blood pressure and enhances uterine blood velocity in rats. The reactivity of the uterine artery to alpha-adrenoceptor and muscarinic receptor agonists was higher than that of systemic arteries. Sodium nitroprusside increased uterine arterial blood velocity slightly during gestation ...

OBJECTIVE: The purpose of this study was to examine longitudinally changes in quantified blood volume flow in the uterine arteries during pregnancy with the use of color power angiography. STUDY DESIGN: Color power angiography was used to quantify volume flow in the uterine arteries of 57 women with singleton uncomplicated ...

BACKGROUND: Down-regulation in assisted reproduction treatment cycles is monitored by suppression of ovarian/pituitary hormones and/or measurement of endometrial thickness. METHODS: This prospective longitudinal study reports on utero-ovarian characteristics of pituitary desensitization. A total of 75 patients were recruited; 32 had IVF treatment, 20 frozen--thawed embryo transfer cycles and 23 patients ...

The Pomeroy method is a most widely practiced and most familiar form of tubal ligation. It traditionally requires laparotomy or multiple-puncture laparoscopic suturing, which is not a realistic option for the average endoscopist. We designed a 5-mm device, the Endosquid, to reproduce Pomeroy tubal ligation laparoscopically using a single 5-mm ...

Blood flow to the gravid uterine horn of seven multiparous Holstein cows (mean +/- SD, BW = 625.5 +/- 82.4 kg; age = 4.7 +/- 1.7 yr; parity = 2.9 +/- 1.1 yr) was measured from d 225 of gestation to parturition using transit-time ultrasonic blood flow probes placed around ...

Objectives: To investigate the hypothesis that reduced resting tissue blood flow precedes the clinical onset of pre-eclampsia in women at risk of the disease. METHODS: We used venous occlusion plethysmography to compare resting calf muscle blood flow in 18 normal pregnant controls, 18 pregnant women with chronic hypertension, and 23 ...

AIMS: To compare the effects of 3 months' tibolone treatment with the effects of placebo on sexual function (in particular, vaginal blood flow, and sexual desire and arousability) and climacteric symptoms in postmenopausal women. METHODS: A randomized, double-blind, cross-over study was conducted in 38 postmenopausal women who received tibolone 2.5 ...

OBJECTIVE: We sought to determine the hemodynamic effects of tibolone in reproductive and nonreproductive tissues in the nonpregnant ovariectomized sheep. Study Design: Six ewes were chronically instrumented for measurement of mean arterial pressure, heart rate, cardiac output, and coronary and uterine blood flow. A dose response curve was generated for ...

To determine the haemodynamic parameters in women with tubal and male factors of infertility and to investigate the effect of ovarian stimulation on the blood flow indices of the uterine and ovarian arteries. Prospective evaluation of the pulsitility index (PI) and resistance index (RI) of the uterine and ovarian arteries ...

We investigated leukocyte involvement in uterine hypoperfusion and intrauterine fetal growth retardation (IUGR) induced by ischemia-reperfusion (I/R) in Sprague-Dawley rats. On day 17 of gestation, leukocyte accumulation in the uterus and placenta subjected to 30 min of ischemia, followed by reperfusion, was assessed by measuring myeloperoxidase (MPO) activity. Uterine MPO ...

OBJECTIVE: To investigate the role of sonographic parameters in assessing endometrial receptivity in an in vitro fertilization (IVF) program. DESIGN: Prospective clinical study. SETTING: University setting. PATIENT(S): One hundred thirty-five patients in our IVF program, selected prospectively on the day of oocyte retrieval. INTERVENTION(S): Transvaginal ultrasound examination was performed before ...

We presented a case of locally advanced cervical cancer treated by intraarterial infusion chemotherapy, and evaluated the blood flow of uterine arteries before and after chemotherapy by using a transvaginal ultrasonic color Doppler device. Pulsatility index (PI) of each uterine artery increased after first course of chemotherapy compared to that ...

High-altitude reduces infant birth weight as a result of intrauterine growth restriction (IUGR) and is associated with increased neonatal mortality. We hypothesized that babies born to Tibetan compared to Han (Chinese) high-altitude residents were protected from IUGR as the result of increased maternal O(2) transport due, in turn, to increased ...

OBJECTIVE: Our purposes were to compare the impact of surgery on menstrual blood flow reduction and on the increase in hemoglobin values as primary endpoints at 12 months, and operating time, complication rates, postoperative pain scores at 12 h and surgically induced amenorrhea rates at 12 months as secondary endpoints ...

The aim of this study was to investigate the effect of local cold stress to the soles on placental histology in rats. Pregnant rats were subjected to a cold provocation (0 degrees C, 12 degrees C) and room temperature (23 degrees C) for 15 and 30 minutes. During cold stimulation ...

Recent studies revealed functional extragonadal gonadotropin receptors at several sites of the human body. The human chorionic gonadotropin/luteinizing hormone (hCG/LH) receptor messenger RNA and protein were found in the endothelial and vascular smooth muscle layers of the human uterine arteries. In vivo administration of hCG decreased the blood flow resistance ...

BACKGROUND: The pain in primary dysmenorrhea is caused by excessive prostaglandin production that leads to vasoconstriction and uterine ischemia. Changes in uterine blood flow are important factors in pathophysiology of primary dysmenorrhea. The aim of the study was to determine if vasoconstriction of the uterine vessels in patients with primary ...

Menstrual disturbances are one of the most common problems presenting to the gynaecologist. In order for the endometrium to bleed, vessels must break down. Disruption in the regulation of endometrial vascular growth and function has been found in association with spontaneous and sex steroid-induced disturbances of menstrual bleeding. Although circulating ...

Fibroids arise from mutations of single myometrial cells making fibroids anatomically and genetically distinct from myometrium. Fibroids are supplied with blood from branches of the uterine arteries. When the uterine arteries are acutely occluded, bilaterally, either surgically or with embolic particles, blood flow to the uterus is nearly totally stopped ...

OBJECTIVE: To investigate the concomitant time courses of the changes in osmolality and calculated blood volume during the genesis of ovarian hyperstimulation syndrome (OHSS). DESIGN: Prospective longitudinal study. SETTING: IVF-ET program in a university-based assisted reproductive technology center. PATIENT(S): Thirty women undergoing superovulation for IVF-ET. INTERVENTION(S): Blood and urine samples ...

Two methods for the determination of ovulation were compared to one ultrasonography performed 5 times a day. Time of ovulation by echography was 40 +/- 5.8 h (mean +/- SD) after the onset of oestrus. Preovulatory LH rise (two blood samples per day) began near the onset of oestrus but, ...