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Biomedical subjects

Patrick Puttemans

Publications and source records attributed to Patrick Puttemans.

10 recordsLinked to original sources
PubMed2004

Diagnosis of endometriosis: pelvic endoscopy and imaging techniques.

Although laparoscopy is the gold standard for the diagnosis of endometriosis, the need for this invasive diagnostic tool is a major stumbling-block in both effective clinical management and for research into this common and debilitating disease. As visual inspection of the pelvis has also major limitations, particularly for the diagnosis of posterior pelvis, bowel and bladder endometriosis, it is not surprising that considerable efforts are being made to improve the diagnosis by imaging techniques. Peritoneal endometriosis and ovarian endometriomata are predominantly haemorrhagic lesions. During laparoscopy, these lesions are readily identified by the presence of old or recent bleeding. Both transvaginal sonography and magnetic resonance (MR) imaging have a low sensitivity for the diagnosis of peritoneal and ovarian implants and adhesions. Transvaginal sonography is useful in the diagnosis of ovarian endometriomata, providing the diameter is larger than 2 cm. As transvaginal sonography costs less than MR imaging, transvaginal sonography might be the preferred method of confirming a sizeable endometrioma. Posterior pelvis endometriosis is an infiltrating adenomyotic lesion with microendometriomata. High-resolution transvaginal ultrasonography, and in particular MR imaging, are increasingly used to diagnose the presence and extent of infiltrating lesions and the involvement of rectosigmoid and ureters.

Endometriosis↗
PubMed2004

Progress in transvaginal hydrolaparoscopy.

Reproductive performance is now more than ever determining the choice of treatment for each individual couple. The easy access to ART treatments, their financial benefits, and the relative high success rate per cycle are at the basis of a liberal referral to these treatments without an accurate diagnosis. The easy and comprehensive investigation by a transvaginal endoscopy as a first-line diagnostic procedure allows for an accurate diagnosis and the choice of the most appropriate treatment.

Female↗
PubMed2004

Investigation of the infertile couple: when is the appropriate time to explore female infertility?

While the appropriate method for the investigation of female infertility continues to be debated, the timing of the investigation has received less attention. The current approach is time-consuming, and paradoxically may lead to overtreatment as well as undertreatment. Recent findings on fecundity and the conception window in humans have important implications for the timing of the investigation of female infertility. The findings support the view that fertility-oriented intercourse may have a major impact in reducing the time to pregnancy. Procedures for the investigation of female infertility are becoming less invasive and more accurate, while the therapies for infertility are more effective. It is proposed that under appropriate circumstances female infertility should be investigated after 6 months of fertility-oriented intercourse.

Coitus↗
PubMed2003

Non-invasive methods of diagnosis of endometriosis.

PURPOSE OF REVIEW: Laparoscopy is the gold standard for the diagnosis of endometriosis but the need for visual evidence of the disease is a major stumbling-block for both effective clinical management of affected patients as well as for research into this common and debilitating reproductive disease. Laparoscopy is invasive and often causes a delay in diagnosis and treatment, especially in symptomatic teenagers and young women. Moreover, the visual inspection of the pelvis has major limitations, particularly for the diagnosis of retroperitoneal lesions. It is therefore not surprising that considerable efforts are being made to improve imaging techniques and to evaluate the diagnostic value of potential molecular markers of disease. RECENT FINDINGS: High-resolution transvaginal ultrasonography and, in selected cases, magnetic resonance imaging improve the diagnosis of retroperitoneal pelvic endometriosis as well as the identification of lesions that involve pelvic organs. A variety of serum and endometrial markers are being evaluated for their diagnostic potential, particularly in endometriosis associated infertility. The first gene profiling studies are showing positive results and proteomic technology is being applied to identify novel diagnostic protein expression patterns. SUMMARY: Current imaging techniques, such as transvaginal ultrasonography, are useful to screen the pelvis for the presence of retroperitoneal endometriosis but fail to diagnose peritoneal lesions, small ovarian endometriomas and adhesions. Postgenomic technologies and identification of novel serum and endometrial markers are likely to revolutionize future diagnosis of endometriosis.

Biomarkers↗
PubMed2002

Aromatase P450 messenger RNA expression in eutopic endometrium is not a specific marker for pelvic endometriosis.

OBJECTIVE: To determine whether expression of aromatase P450 mRNA in eutopic endometrium is predictive of the presence of pelvic endometriosis. DESIGN: A prospective, multicenter, observational study. SETTING: Four tertiary centers for reproductive medicine. PATIENT(S): Sixty subjects of reproductive age undergoing laparoscopy for subfertility exploration, pain assessment, or sterilization. INTERVENTION(S): Endometrial biopsy at time of laparoscopy. MAIN OUTCOME MEASURE(S): The expression of aromatase P450 mRNA in endometrial specimens was determined by single-tube reverse transcription-polymerase chain reaction (RT-PCR). Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) mRNA was amplified in parallel to exclude amplification failure. RESULT(S): The RT-PCR amplification was successful in 56 of the 60 biopsies (93%). Pelvic endometriosis was diagnosed in 34 patients (61%) and was strongly associated with aromatase P450 mRNA expression in eutopic endometrium. As a diagnostic marker for endometriosis, aromatase P450 mRNA expression yielded a sensitivity of 82%, a specificity of 59%, a positive predictive value of 76%, and a negative predictive value of 67%. If additional uterine pathology was taken in account, the sensitivity increased to 84%, the specificity to 72%, the positive predictive value to 87%, but the negative predictive value remained unchanged (67%). CONCLUSION(S): Although endometrial aromatase P450 gene expression is highly predictive of the presence of pelvic disease, the relative high incidence of false-negative results and lack of specificity is likely to impair clinical application.

Adult↗
PubMed2002

Investigation of the infertile couple: a one-stop outpatient endoscopy-based approach.

Transvaginal hydrolaparoscopy (THL) is a new culdoscopic technique for exploration of the pelvic cavity that takes advantage of micro-endoscopic technology and uses aquaflotation for inspection of the tubo-ovarian structures. In infertility patients, THL is systematically combined with mini-hysteroscopy, chromopertubation, fimbrioscopy and, when indicated, salpingoscopy. Mini-hysteroscopy in combination with the chromopertubation test allows accurate assessment of the uterine cavity and tubal patency. The transvaginal access combined with the aquaflotation during THL facilitates detailed inspection of the tubo-ovarian structures and detection of subtle pelvic disease. This combined transvaginal endoscopic approach allows complete evaluation of the reproductive tract. THL is better tolerated than hysterosalpingography, less invasive than standard laparoscopy, and can be used safely as a first line investigation of the female partner in a one-stop infertility clinic.

Cost-Benefit Analysis↗
PubMed2002

One-stop endoscopy-based infertility clinic.

PURPOSE OF REVIEW: The investigation of the infertile couple is currently a highly debated issue. The purpose is to review whether transvaginal hydrolaparoscopy in combination with mini-hysteroscopy and chromopertubation can be offered as a one-stop infertility investigation. RECENT FINDINGS: The technique is based on the direct visualization of the reproductive organs and the presence of tubal patency, and has been clinically validated during the past year for its accuracy, safety and patient tolerance. SUMMARY: Further prospective randomized studies are required to prove the superiority of transvaginal hydrolaparoscopy in comparison with hysterosalpingography as a first-line investigation in predicting the fertility outcome.

Ambulatory Care Facilities↗