Biomedical subjects

G Rienhardt

Publications and source records attributed to G Rienhardt.

3 recordsLinked to original sources

PubMed2000

Can uroflowmetry patterns in women be reliably interpreted?

Our aim was to investigate the proposition that uroflowmetry patterns can be reliably interpreted and correspond with specific urodynamic diagnoses. Uroflowmetry traces from 129 women with diagnoses of either genuine stress incontinence or detrusor instability were interpreted by four physicians with a minimum of 6 months experience in urogynecology. To test intraobserver variability, the traces were classified a second time 8 weeks later. Inter- and intraobserver variability was calculated by kappa analysis. There was marked intra- and interobserver variability in classification of traces, but no evidence of a correlation between urodynamic diagnosis and uroflowmetry pattern. Neither peak flow, total voided volume nor rate of acceleration of flow correlated with diagnosis. Although flow rates are important in predicting possible problems following surgery for stress incontinence, there is no evidence that flow patterns can be used as a screening test for specific urodynamic diagnoses.

Adult↗

PubMed1993

Follicle stimulating hormone levels on cycle day 3 predict ovulation stimulation response.

AIM: To determine the value of basal follicle stimulating hormone (FSH), luteinizing hormone (LH), and estradiol (E2) levels on cycle day 3 in predicting the ovulation stimulation response in patients receiving exogenous gonadotropins for in vitro fertilization (IVF) or gamete intrafallopian transfer (GIFT). METHODS: One hundred eleven consecutive females with infertility due to various etiologies were investigated. Cycle day 3 serum levels of FSH, LH, and E2 were determined prior to ovulation induction with a combination of clomiphene citrate and human gonadotropins. Follicular growth was monitored ultrasonically, and when appropriate, oocytes were recruited, counted, graded, and then used, as prearranged, for either IVF or GIFT. Basal hormone levels were compared to the peak E2 concentration, the number of follicles aspirated, and the number of preovulatory oocytes recovered following drug therapy. Details of resulting pregnancies were also recorded. RESULTS: Patients with low basal FSH levels (< 11.5 mIu/ml) yielded a higher mean number of preovulatory oocytes than those with high values (> 11.5 mIu/ml), i.e., 6.7 oocytes per cycle vs 2.5 oocytes (P < 0.001). In the low group 97% of cycles yielded more than three fertilizable oocytes compared to 42% in the high group (P < 0.5). There were 16 term pregnancies (16%) in the low group and 1 (8.3%) in the high group. Basal LH and E2 levels did not improve on the ability to distinguish between different populations of infertile females who responded differently to ovulation induction. CONCLUSION: Cycle day 3 FSH levels are predictive of the ovulation response and probability of pregnancy in stimulated cycles and can be of value in patient selection and counseling in IVF and GIFT programs.

Abortion, Spontaneous↗

PubMed1987

Spontaneous prolonged contractions during antenatal fetal heart rate monitoring.

Uterine contractions of more than 2 minutes' duration occurred spontaneously in 1.4% of 6,399 antenatal fetal heart rate (FHR) recordings. All recordings were made in the Department of Obstetrics and Gynaecology at Tygerberg Hospital. The patients with spontaneous prolonged contractions (SPC) were compared with a randomly selected control group. Patients who had an SPC during antenatal FHR recording were not at a higher risk of abruptio placentae, preterm labour or unexpected intra-uterine death. Of the infants born to the mothers in the study group, 65.5% were male. There were more primigravidas in the study group, which may have been responsible for the longer duration of the second stage of labour in this group. When primigravidas only were examined no difference between the two groups could be found except for a larger placental mass in the study group. It is uncertain why primigravidas were more likely to develop SPCs as observed during antenatal FHR monitoring.

Delivery, Obstetric↗