C H Tiemessen

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Sperm analysis was performed in a male with oligoasthenoteratozoospermia (OAT) and a reciprocal t(Y;16) (q11. 21;q24), using four-color FISH. Intracytoplasmic sperm injection (ICSI) treatment in this patient had resulted in the birth of one chromosomally balanced and two chromosomally normal children. To assess the risk of having a chromosomally unbalanced(More)
A follow-up study was performed to investigate the impact of the detection of a chromosome abnormality in infertile men who are candidates for intracytoplasmic sperm injection (ICSI) treatment. In this collaborative study between clinical genetics centres and fertility clinics in the Netherlands, 75 ICSI couples of which the male partners had a chromosome(More)
BACKGROUND Current laboratory tests often cannot distinguish between bacterial and aseptic meningitis rapidly and accurately. The ability to make a prompt diagnosis has important implications for the management and outcome of children with meningitis. The observation that leukocytes aggregate in the cerebrospinal fluid (CSF) has been previously reported,(More)
OBJECTIVE Description of the outcome of pregnancies after in vitro fertilisation (IVF) in Dutch IVF centers. DESIGN Descriptive, retrospective. METHOD Data were collected on IVF pregnancies in the period 1984-1992 from seven Dutch IVF centers. RESULTS The study comprised 2956 pregnancies. Five centres provided data on 2133 ongoing and non-ongoing(More)
A balanced translocation t(Y;16)(q11.21;q24) is described in a male with severe oligoasthenoteratozoospermia (OAT). Before having a chromosome investigation, the patient and his partner had undergone intracytoplasmic sperm injection (ICSI) treatment resulting in the birth of a healthy 46,XX child. After detection of the t(Y;16) translocation, the couple(More)
The aim of this randomized cross-over study was to determine whether direct intraperitoneal insemination (DIPI) is superior to intrauterine insemination (IUI) in hyperstimulated cycles. The treatment cycles were stimulated with either clomiphene citrate and human menopausal gonadotrophins, or buserelin and human menopausal gonadotrophins. 207 subfertile(More)
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