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W Beekhuizen

Publications and source records attributed to W Beekhuizen.

7 recordsLinked to original sources
PubMed2002

[Results of in vitro fertilization in the Netherlands, 1996-2000].

OBJECTIVE: To describe the annual results in all 13 Dutch in vitro fertilisation (IVF) centres in the period 1996-2000, and to look for possible differences between individual centres and years. DESIGN: Retrospective data collection, description and analysis. METHOD: The results collected on the website of the Dutch Society of Obstetrics and Gynaecology (Dutch acronym: NVOG; www.nvog.nl) in the period 1996-2000 were integrated and described, with special attention to possible differences between centres and years. RESULTS: In 1996-2000 (5 years), 63,414 IVF or ICSI treatment cycles were started in the Netherlands, and 5,884 transfers of cryopreserved embryos were performed. The number of treatment cycles increased over the years, particularly the number of ICSI cycles. The total number of ongoing pregnancies was 12,991 (20.5% per started cycle; 22.5% for ICSI and 18.3% for IVF). Particularly during the first 3 years, there was an increase in these percentages (IVF: from 16.4% (1996) to 19.2% (1998); ICSI: from 18.3% (1996) to 23.9% (1998)). There were differences between the centres in both the percentage of ongoing pregnancies per started IVF/ICSI cycle (range 13.7-25.1%) and the percentage ICSI (14-61%) and cryo-transfers per total number of treatment cycles (0-26%). It was estimated that, during this 5-year period, 1 out of every 61 Dutch neonates resulted from IVF or ICSI. CONCLUSION: The pregnancy-rates after IVF and ICSI increased during the study period, and were comparable with the rates in other European countries. Some important data are still missing from the inventory, for example regarding the number of embryos per transfer, multiple pregnancies, live births, congenital malformations and complications.

Embryo Transfer↗
PubMed1983

Carbon dioxide hysteroscopy immediately after second trimester abortion.

The use of hysteroscopy has been restricted a.o. by the need for general anesthesia. This applies in particular to the pre- or post-partum period, because the hyperemic atonic uterus is easily over-inflated to a dangerous level. Over-inflation did not occur following 50 aspirotomy D & E procedures in the second trimester, using a para- and intracervical block with lidocaine 1% with adrenaline 1:200,000 only. The uterine cavity was always thoroughly evacuated in these cases in which final check suction had been performed. We recommend that postabortum hysteroscopy should be performed preferably under local anesthesia.

Abortion, Induced↗
PubMed1980

Cul-de-sac insufflation to induce pneumoperitoneum: an analysis of rare problems.

Since 1977, cul-de-sac insufflation has been used to achieve pneumoperitoneum for laparoscopic sterilization of 570 women. The authors have previously published findings on 350 of these women (Int J Gynaecol Obstet 17(4):375, 1980), reporting technical failure rates of 3.6% and 1.9% for a series of 195 and 155 women, respectively. The failure rate for the latest series of 220 women declined to 1.4%. Reasons for this lower rate and recurring causes of the failures are given, and recommendations for the use of cul-de-sac insufflation for inducing pneumoperitoneum are suggested.

Douglas' Pouch↗
PubMed1979

Diagnostic miniculdoscopy preceding laparoscopy when bowel adhesions are suspected.

Suspected bowel adhesions are often considered a relative contraindication to laparoscopy. To attempt preoperative diagnoses of intraabdominal adhesions, miniculdoscopy was performed on ten patients with a miniendoscope. It was possible to establish the presence or absence of adhesions and to determine a safe abdominal trocar insertion site. The laparoscope trocar could be inserted under direct controlled vision with the culdoscope in nine cases, suggesting that this procedure averts bowel adhesions. This technique may be a contribution to safer laparoscopy.

Culdoscopes↗
PubMedDate not supplied

Cul-de-sac insufflation: an easy alternative route for safely inducing pneumoperitoneum.

Since 1977, routine cul-de-sac insufflation to achieve a pneumoperitoneum for laparoscopy was performed on 350 women under local anesthesia. A van Schie/van Lith intrauterine tenaculum, used together with a self-retaining Trelat speculum, guaranteed maximum stretching of the posterior vaginal fault and fixation of the anteflexed uterus necessary for an accurate 1-cm deep penetration of a pneumoperitoneum needle into the cul-de-sac. The correct position of the tip of the needle was determined precisely by means of two manometers. The failure rate in the first study of 195 procedures was 3.6% and that in the following 155 cases was 1.9%. There were no serious operative complications. The authors recommended the cul-de-sac insufflation approach for inducing pneumoperitoneum as the technique of choice.

Douglas' Pouch↗