Search PubMed⌕ Search

Biomedical subjects

G Creatsas

Publications and source records attributed to G Creatsas.

At least 37 records · Page 2Linked to original sources

Information sources and level of knowledge of contraception issues among Greek women and men in the reproductive age: a country-wide survey.

OBJECTIVE: Good reproductive health depends to a great extent on how well informed people are on contraception issues. Contrary to the situation existing in many European countries, in Greece there has been a lack of studies investigating how well informed Greek women and men are. Also, the sources on which they draw are equally important. The aim of this study was to examine the knowledge of Greek women and men on issues of contraception, with the ultimate goal of identifying which groups should be the focus of prevention planning programs. METHOD: A country-wide survey was conducted through a self-administered questionnaire. The sample, numbering 1500 people, was representative of the Greek population aged 16-45 years. RESULTS: A key finding was that only a small percentage of the respondents were able to answer correctly 50% or more of the questions on knowledge of basic contraceptive issues (30.6% of women and 14.7% of men). Regarding sources of information, media and friends were reported as the primary sources of information for men of all ages and young women. The gynecologist becomes a significant source of consultation for women only after the age of 25 years. Even then, only 4% of women visiting a gynecologist do so to obtain information on prevention of pregnancy. The majority of women asking professional advice have already experienced an unwanted pregnancy. CONCLUSION: The need for health education is apparent, especially for young people.

Adolescent↗

Three cases of diabetes insipidus complicating pregnancy.

Diabetes insipidus (DI) is a rare complication of pregnancy. In cases related to pregnancy, the condition is thought to result from enhanced placental clearance of arginine vasopressin secondary to placental vasopressinase production. In such cases careful monitoring of the patient's fluid balance during and after pregnancy is essential. If treatment is necessary, desmopressin is the drug of choice. In the present article, we present three cases of pregnancy complicated by DI.

Adult↗

Effect of hormone therapy, tibolone and raloxifene on circulating vascular endothelial growth factor in Greek postmenopausal women.

OBJECTIVE: To evaluate the effect of continuous combined hormone therapy (HT), tibolone and raloxifene on circulating vascular endothelial growth factor (VEGF) in postmenopausal women. DESIGN: One-year prospective intervention study. METHODS: One hundred and forty-six postmenopausal women with a mean age of 51.8+/-4.1 (s.d.) years received 0.625 mg conjugated equine estrogen (CEE) plus 5 mg medroxyprogesterone acetate (MPA) (CEE/MPA, n=34), 2.5 mg tibolone (n=37), 60 mg raloxifene (n=40) or no active treatment (control group, n=35). Plasma VEGF was estimated at baseline and at 6 and 12 months. RESULTS: In both the CEE/MPA-treated and the tibolone-treated groups plasma VEGF increased significantly at month 6 and remained elevated at month 12 (CEE/MPA baseline: 268.1+/-187.8 pg/ml, month 6: 320.0+/-175.3 pg/ml, month 12: 321.1+/-181.8 pg/ml, P=0.01; tibolone baseline: 240.6+/-165.8 pg/ml, month 6: 271.4+/-172.7 pg/ml, month 12: 274.8+/-183.1 pg/ml, P=0.03). These changes were significantly different from the respective changes in the control group after adjusting for T-score in bone densitometry (CEE/MPA: P=0.02, tibolone: P=0.04). The effect of HT or tibolone on plasma VEGF was mainly evident in women with low baseline VEGF levels (<243.2 pg/ml, median for whole sample). On the contrary, VEGF levels in the raloxifene-treated or the control group did not change throughout the study. CONCLUSION: Both continuous combined HT and tibolone increased circulating VEGF in postmenopausal women, while raloxifene had no effect. Further research is needed to clarify the clinical relevance of these findings with respect to cardiovascular risk in postmenopausal women.

Estrogen Antagonists↗

Primary fallopian tube cancer--a ten year review. Clinicopathological study of 12 cases.

Primary fallopian tube cancer is the rarest of all gynecologic cancers, presenting as benign pelvic disease or more often as ovarian cancer and almost all cases are diagnosed at operation or autopsy. Primary adenocarcinoma is the most common histological type of primary tube cancer which has traditionally been managed and treated in the same manner as epithelial ovarian cancer. However, unlike ovarian cancer, fallopian tube cancer is not routinely suspected and treatment may be delayed and also seems to have a worst prognosis than ovarian cancer. We present a retrospective study involving 12 patients with primary fallopian tube cancer treated in our department. The clinicopathologic characteristics and treatment are reviewed.

Adenocarcinoma↗

Outcome of patients with ovarian metastatic tumors. Report of 83 cases and review.

UNLABELLED: The aim of the study was to review patients with metastatic ovarian tumors in relation to their outcome and clinical characteristics. METHODS: It was a retrospective study including 83 patients with histopathological diagnosis of metastatic ovarian tumor. The examined parameters include age of the patients, origin of the tumor, consistency and appearance of the tumor, histological type and 5-year survival. RESULTS: The 5-year survival time of patients with metastatic ovarian tumors originating from the genital tract was 14.8% and for metastatic ovarian tumors originating outside the genital tract 5.4%. CONCLUSION: The presence of metastatic ovarian tumors should always be included in the differential diagnosis of a pelvic mass. Difficulties in identification of the primary tumor site are present mainly in cases of metastatic tumors from the colon, while metastasis to the ovary from the breast tends to form small nodules in the ovary.

Adult↗

Tension-free vaginal tape in the management of recurrent stress incontinence.

METHODS: Thirty-three patients with failed previous incontinence surgery had a Tension-free vaginal tape (TVT) inserted. Preoperative evaluation included uroflow, filing and voiding cystometry, urethral profilometry and a Q-tip test. Factors assessed postoperatively included cure, improvement or failure rates at 20.5 months follow-up, complications, and preoperative and postoperative values of a Q-tip test. RESULTS: The overall success rate was 70% at a mean of 20.5 months follow up (range 12-29 months). In patients with sufficient preoperative mobility of urethra the success rate was 90%, while in patients with a fixed urethra preoperatively the success rate was 33%.

Female↗

Serum lipids and apolipoproteins in Greek postmenopausal women: association with estrogen, estrogen-progestin, tibolone and raloxifene therapy.

The aim of this study was to assess lipid and apolipoprotein levels in postmenopausal women taking various regimens of replacement therapy or no therapy. Seven hundred forty-eight postmenopausal women followed in the Menopause Clinic of the 2nd Department of Obstetrics and Gynecology, University of Athens, Aretaieion Hospital, were studied in a cross-sectional design. Women were either non-users of replacement therapy (no. = 511) or users of one of the following regimens: conjugated equine estrogen 0.625 mg (CEE, no. = 34), CEE 0.625 mg plus medroxyprogesterone acetate 5 mg (CEE/MPA, no. = 60), 17beta-estradiol 2 mg plus norethisterone acetate 1 mg (E2/NETA, no. = 44), tibolone 2.5 mg (no. = 84), raloxifene HCI 60 mg (no. = 51). Total cholesterol (TC), LDL-cholesterol (LDL-C) and HDL-cholesterol (HDL-C), triglycerides (TG), apolipoprotein A1 (ApoA1) and apolipoprotein B (ApoB) levels were assessed. Women were grouped according to replacement regimen and mean levels of lipid and apolipoproteins were compared between groups. Women in the raloxifene group were older and longer menopaused. After adjustment for age and duration of menopause, TG levels were significantly lower in the tibolone and E2/NETA groups (75 and 89.9 mg/dl, respectively) compared to non-users. TC was lower in all therapy groups, but the difference acquired significance only in the E2/NETA (207.8 mg/dl), compared to non-users (231.5 mg/dl). LDL-C levels were significantly lower in the CEE (133.8 mg/dl), CEE/MPA (130.4 mg/dl) and raloxifene group (129.9 mg/dl) compared to non-users (151.9 mg/dl). There was no difference in HDL-C levels between users and non-users (58.9 mg/dl) except for the tibolone group where HDL-C was significantly lower (48.6 mg/dl). ApoA1 levels were significantly higher in the CEE/MPA group (194.4 mg/dl) and significantly lower in the tibolone group (141.6 mg/dl) compared to non-users (170.4 mg/dl). No difference was detected between groups concerning ApoB levels. In conclusion, tibolone therapy is associated with lower TG levels as well as lower HDL and ApoA1 levels. ERT, continuous combined estrogen-progestin therapy (HRT) and raloxifene are associated with lower LDL-C levels. Among continuous combined HRT users, CEE/MPA is associated with higher ApoA1 levels, while E2/NETA with lower TG levels. Large prospective randomized studies are required to validate these results.

Apolipoproteins↗

Determinants of serum leptin levels in healthy postmenopausal women.

The aim of this study was to evaluate factors that influence leptin levels in postmenopausal women. One hundred and forty-four postmenopausal women were evaluated cross-sectionally. In every woman a complete medical history was obtained, body mass index (BMI) was recorded and morning fasting blood was obtained for the determination of serum leptin, follicle stimulating hormone (FSH), estradiol, testosterone, delta4androstendione, dehydroepiandrosterone sulphate (DHEAS) and insulin. In univariate analysis, age, BMI and insulin were positively correlated with serum leptin, while DHEAS showed a negative association with leptin concentrations (age r=0.21, p=0.005, BMI r=0.41, p=0.0001, insulin r=0.20, p=0.008, DHEAS r=-0.28, p=0.0001). In stepwise multivariate regression analysis serum leptin could be best predicted from BMI, serum insulin and serum DHEAS [leptin= (1.41 * BMI) - (0.01 * DHEAS) + (3.26 * insulin) - 26.3; model r2=0.24, p=0.001]. In conclusion, BMI and serum insulin have a positive while serum DHEAS has a negative impact on serum leptin. Neither endogenous estradiol, nor endogenous testosterone are associated with leptin levels. Further studies are needed to elucidate the role of leptin in determining body weight and composition in postmenopausal women.

Aging↗

Evaluation of non-reassuring fetal heart rate patterns with fetal pulse oximetry combined with vibratory acoustic stimulation.

OBJECTIVE: To determine the value of fetal pulse oximetry and vibratory acoustic stimulation in the presence of non-reassuring fetal heart rate patterns during labor. DESIGN: Prospective study in women monitored by cardiotocography and fetal pulse oximetry during labor. MATERIALS AND METHODS: During a period of 18 months, 907 consecutive parturients in labor were monitored by cardiotocography. Out of these women, 63 were selected on the basis of a non-reassuring fetal heart rate tracing during the first stage of labor. In these cases, fetal pulse oximetry was applied. Vibratory acoustic stimulation was applied in fetuses without spontaneous reactivity in order to evaluate the fetal status. RESULTS: Our cases were classified into three groups, according to the lower fetal oxygen saturation levels, from the time of oximetry application until delivery. Group A consisted of 29 cases where fetal oxygen saturation levels were > or = 41%, group B (20 cases) with fetal oxygen saturation of 31-40% and group C (14 cases) with levels of < 30%. Spontaneous reactivity was observed in 15 fetuses of group A and seven of group B, while no case of reactivity was noted in group C. Vibratory acoustic-induced reactivity was associated with low fetal oxygen saturation levels. The mean umbilical artery pH levels were 7.29 +/- 0.051 in group A, 7.21 +/- 0.057 in group B and 7.04 +/- 0.05 in group C. CONCLUSION: Fetal pulse oximetry should be indicated not only in fetuses without any reactivity but also in those with induced reactivity, after the application of vibratory acoustic stimulation.

Acoustic Stimulation↗

Spinal and epidural versus general anesthesia for elective cesarean section at term: effect on the acid-base status of the mother and newborn.

OBJECTIVE: To compare general, epidural and combined spinal-epidural anesthesia with respect to short-term outcome of newborns delivered by elective Cesarean section of healthy parturients with normal pregnancies. STUDY DESIGN: A total of 238 eight pregnant women admitted to our institution between January 1998 and July 2002, for whom elective Cesarean section was planned after 38 weeks' gestation, were grouped according to the kind of anesthesia used for the procedure. Maternal characteristics, birth weight, Apgar scores, and maternal and umbilical artery (UA) acid-base parameters were analyzed. RESULTS: Maternal pH was significantly lower and pCO2: and pO2 were significantly higher in the general anesthetic group, compared to the other two groups (7.38 +/- 0.03 vs. 7.43 +/- 0.02 and 7.43 +/- 0.05, respectively; 35.03 +/- 3.88 mmHg vs. 29.25 +/- 5.05 mmHg and 29.64 +/- 4.16 mmHg, respectively; and 224.56 +/- 86.77 mmHg vs. 151.28 +/- 38 mmHg and 157.36 +/- 53.51 mmHg, respectively, p < 0.05). The pH of the UA was higher in the general anesthetic group, compared to the spinal-epidural group (7.29 +/- 0.02 vs. 7.26 +/- 0.06, p < 0.05). The pO2 as well as O2 saturation of the UA were higher when general anesthetic was administered, compared to the two regional modalities (15.60 +/- 5.48 mmHg vs. 9.29 +/- 4.41 mmHg and 9.20 +/- 4.06 mmHg, respectively; and 17.37 +/- 9.79% vs. 7.87 +/- 4.98% and 6.90 +/- 5.22%, respectively, p < 0.05). UA O2 saturation fell to zero in some cases in the combined spinal-epidural group, without an evident effect on fetal well-being. No fetal acidemia was noted in any group. Neonatal outcomes were similar in the three groups studied. CONCLUSIONS: Type of anesthesia does not influence short-term outcomes in infants born via elective Cesarean section, although differences in acid-base status of both the mother and especially the newborn recommend careful use of spinal anesthesia.

Acid-Base Equilibrium↗

Matrix metalloproteinase-9 and tissue inhibitor of metalloproteinase-1 in plasma/serum and urine of women during term and threatened preterm labor: a clinical approach.

OBJECTIVE: To explore the concentrations of matrix metalloproteinase-9 (MMP-9) and tissue inhibitor of metalloproteinase-1 (TIMP-1) in plasma, serum and urine of women during term and threatened preterm labor. METHODS: Plasma and urine proMMP-9 as well as serum and urine TIMP-1 were evaluated in 60 healthy pregnant women; 20 of them presented in term labor following an uncomplicated pregnancy, 20 of them presented with threatened preterm labor and intact membranes at 24-36 gestational weeks and 20 of them were at 24-40 gestational weeks with no evidence of uterine contractions or other pregnancy complications. Data were analyzed with non-parametric statistical tests and cut-off values were determined with receiver operator characteristic curves. RESULTS: ProMMP-9 values were significantly higher and TIMP-1 values were significantly lower in cases with uterine term or preterm contractions compared to non-labor status; and in cases with preterm contractions that progressed to true preterm labor compared to those in which contractions were arrested. CONCLUSIONS: Alterations in the concentrations of proMMP-9 and TIMP-1 can be detected in plasma or serum and urine of pregnant women experiencing term or preterm uterine contractions. The altered values of proMMP-9 and TIMP-1 could possibly identify the inevitable progress of preterm contractions to true preterm labor.

Adult↗

Oral contraceptives and reproductive system cancer.

Extensive research during the last 20 years has shown that oral contraceptives are safe. Several recent epidemiological studies have confirmed that combined oral contraceptives (COCs) provide substantial protection against endometrial and ovarian cancer, and this protection is long-lasting and may persist for 15 or more years after termination of OC use. In many studies COCs have been associated with an increased risk of cervical abnormalities and cervical cancer, but there might be alternative explanations for these epidemiological associations (COC users can start having sexual intercourse at an earlier age, they have more sexual partners, and they rarely use barrier methods of contraception), so OCs act as a promoter for HPV-induced carcinogenesis. Finally, women who are currently using COCs or have used them in the past 10 years are at a slightly increased risk of having breast cancer during the next 10 years, although the additional cancers diagnosed tend to be localized to the breast and they are less advanced clinically than the cancers diagnosed in those who have never used COCs.

Adult↗

Transvaginal sonographic monitoring of the uterine effects of raloxifene and a continuous combined replacement therapy in postmenopausal women.

OBJECTIVE: To study the effect of 17beta-estradiol+norethisterone acetate and raloxifene on the endometrium and uterine volume in postmenopausal women. METHODS: Patients were randomly assigned to 17beta-estradiol 2 mg+norethisterone acetate 1mg (E2+NETA) daily (n=90) or raloxifene HCl 60 mg (Evista) daily (n=43). Transvaginal sonography was done at baseline and at 6, 12 and 18 months, and at 6 and 12 months in-patients treated with E2+NETA and EVISTA respectively. Patients were asked to record bleeding-spotting episodes. Whenever required patients were referred for hysteroscopy+/-biopsy of the endometrium. RESULTS: Patients under E2+NETA had a higher bleeding-spotting incidence (48.6%) compared with EVISTA (7.7%). Endometrial thickness increased significantly under E2+NETA as compared with baseline; however, at end point thickness reverted to baseline values. Evista had a non-stimulatory effect on the endometrium. Changes in uterine volume were not statistically significant. CONCLUSIONS: Both treatment regimens provided comparable uterine safety. However, raloxifene exhibited a more favorable safety profile on the uterus as expressed in the bleeding-spotting incidence and the effect on endometrial thickness and uterine volume. Transvaginal sonography appears to be a dependable method for monitoring the effect of treatment on the uterus.

Administration, Oral↗

Heterotopic pregnancy at 16 weeks of gestation after in-vitro fertilization and embryo transfer.

We present an heterotopic pregnancy at 16 weeks of gestation following IVF/ET treatment with the ectopic pregnancy located in the left fallopian tube. Intra-abdominal bleeding secondary to an heterotopic pregnancy, causing acute abdominal pain and hemorrhagic shock, should be included in the differential diagnosis even in the second trimester of pregnancy, especially in patients, achieving conception with the use of assisted reproduction techniques.

Adult↗

Burch colposuspension and tension-free vaginal tape in the management of stress urinary incontinence in women.

OBJECTIVE: Objective of the study was to compare the efficacy and the complications of tension-free vaginal tape (TVT) and Burch colposuspension in the treatment of female genuine stress incontinence (GSI). METHODS: In this controlled, prospective, randomized study, participated 35 patients who underwent Burch colposuspension and 36 patients that underwent TVT procedure. Patients with prolapse more than first degree, previous surgical treatment of stress urinary incontinence (SUI) and detrusor instability were excluded from the study. RESULTS: The operative time for TVT was significantly shorter compared to BC. The severity and duration of postoperative pain for TVT was significantly less compared to BC. The necessary time for return to normal activity was 10 days for TVT and 21 days for BC. The cure rate after 24 months of follow-up was as follows: TVT: 84% and BC: 86%, while the improvement was 7% for TVT and 6% for BC. CONCLUSIONS: TVT and Burch colposuspension are equally effective in the management of female GSI at two years follow-up. TVT procedure requires much less operative time, has much shorter hospitalization time, with significantly less postoperative pain and faster return to normal daily activities than Burch colposuspension.

Adult↗

Fetoplacental leptin levels and their relation to birth weight and insulin in gestational diabetic pregnant women.

To investigate the fetoplacental leptin circulation in gestational diabetes, we compared cord leptin and insulin levels in 17 healthy pregnant women and 17 women with gestational-onset diabetes. Leptin levels in the umbilical arteries (mean+/-SD 1.80+/-0.76 ng/ml) were significantly (P<0.006) lower than those in umbilical veins (2.67+/-0.98 ng/ml) in normal pregnancies. Similarly, leptin levels in umbilical veins (mean+/-4.59+/-1.60 ng/ml) were significantly (P<0.001) higher than those in umbilical arteries (mean+/-SD 2.08+/-0.90 ng/ml) in gestational diabetes. However, leptin levels in umbilical veins were significantly higher (P<0.002) in gestational diabetes than those in controls. Additionally, in women with diabetes but not in controls, the birth weight and the cord leptin concentrations were positively related to cord insulin levels. We conclude that there is a hyperleptinaemia in the fetoplacental circulation in pregnant women with carbohydrate intolerance and in these cases insulin and leptin may have antagonist roles regarding fetal development.

Adult↗

Maternal homocysteine levels and plasma lipids in gestational diabetes: is there any relationship?

The aim of the study was to investigate the possible relationship between maternal homocysteine levels and plasma lipid parameters and whether gestational diabetes can alter the serum maternal concentration of this substance. The study included 36 primigravidas divided into two groups: group A consisted of 21 healthy pregnant women with a mean gestational age of 38.2 weeks, and group B consisted of 15 diabetic women with a mean gestational age of 38.4 weeks. No difference in maternal homocysteine levels was noted between the two groups (6.006 +/- 1.64 vs. 7.004 +/- 1.36 micromol/L). Serum cholesterol levels and serum triglyceride levels in normal pregnant women were not statistically significantly different compared to those seen in diabetic pregnant women. Similarly, no difference was found between the two groups regarding LDL levels and atheromatic index. In women with diabetes there was a weak positive relation between plasma concentrations of homocysteine and LDL levels as well as atheromatic index, but this relation was not statisticially significant. We conclude that serum homocysteine levels are not elevated in women with gestational-onset diabetes. There was also no relation between serum concentrations of homocysteine and lipid parameters in this complication of pregnancy.

Adult↗