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Biomedical subjects

A Dekel

Publications and source records attributed to A Dekel.

At least 55 records · Page 3Linked to original sources
PubMed1996

A delayed starting schedule of oral contraception: the effect on the incidence of breakthrough bleeding and compliance in women.

OBJECTIVES: To assess the effect of oral contraception started on the first day of menses and the fifth day following its onset, on women's compliance and the incidence of early breakthrough bleeding. METHODS: Oral contraceptives (OCs) containing 30 micrograms ethinylestradiol and 75 micrograms gestodene were prescribed to 100 consecutive, healthy women for whom OCs were found to be the most suitable method of contraception. In the first 50 women, OCs were started on the first day of menses (day 1 group), while in the remaining 50 women, OCs were started on the fifth day after the onset of menses (day 5 group). RESULTS: The day 5 group had better compliance and a reduced incidence of breakthrough bleeding. No differences were observed between the two groups regarding age, parity and gravity. CONCLUSION: Starting an OC regimen should include initiation on the fifth day following the onset of menses. This regimen might increase patient compliance and lower the incidence of breakthrough bleeding.

Adolescent↗
PubMed1996

The perception of number from the separability of the stimulus: the Stroop effect revisited.

The literature on numerical perception is reviewed from the standpoint of research on selective attention, and predictions are made concerning the dimensional interaction between physical and numerical size of numerals. We manipulated stimulus differences to make the classification of numerical value slightly better (Experiment 1), substantially better (Experiment 2), or worse (Experiments 3-4) than classification of physical size. Garner, Stroop, and redundancy effects were used to gauge the degree of interactive processing. For nearly matched discriminability, both number and size appeared separable when the dimensions were varied orthogonally, but showed Stroop interference and redundancy gain when the dimensions were varied in a correlative fashion. When mismatched, asymmetric Garner and Stroop effects emerged in orthogonal contexts along with Stroop and redundancy gains in correlative contexts. These findings define a unique relation: Numerical value and physical size were optionally separable dimensions. We conclude that a magnitude representation is not mandatory for the perception of numerals. Our conclusions offer a new perspective for understanding both numerical perception and the Stroop phenomenon itself.

Adult↗
PubMed1995

Polycystic ovary syndrome patients as oocyte donors: the effect of ovarian stimulation protocol on the implantation rate of the recipient.

OBJECTIVE: To evaluate the outcome of oocytes donated by women with polycystic ovarian syndrome (PCOS) compared with oocytes donated by women with mechanical infertility. DESIGN: A retrospective study. PATIENTS: The outcome of 159 oocyte donation cycles with oocyte donated by PCOS patients were compared with 69 oocyte donation cycles with oocytes donated by patients with mechanical infertility. We compared the stimulation protocols in the donors to assess if the combination of GnRH analogue (GnRH-a), FSH, and hMG has an advantage over FSH and hMG alone with respect to their effect on fertilization and implantation rates in oocyte donation cycles. RESULTS: When treated with GnRH-a, pregnancy rates in PCOS and mechanical infertility donors were higher than those treated with FSH and hMG alone. The comparison between PCOS and mechanical factor oocyte recipients revealed no significant difference in the pregnancy and abortion rates, but the oocytes of patients with PCOS that were exposed to GnRH-a had a significantly higher implantation rate than those not exposed to GnRH-a. CONCLUSIONS: Oocytes obtained from PCOS patients had a fertilization potential equal to oocytes obtained from mechanical infertility donors. Furthermore, because the oocytes of patients with PCOS exposed to GnRH-a had a significantly higher implantation rate, a detrimental role of high LH on oocyte quality seems probable. However, because PCOS has a high familial prevalence, some reservations may arise due to a possible propagation of the problem in the next generation of oocyte donation programs.

Embryo Implantation↗
PubMed1995

A severe case of ovarian hyperstimulation syndrome despite the prophylactic administration of intravenous albumin.

OBJECTIVE: To evaluate the role of the recently suggested IV administration of human albumin solution as an effective preventive measure of severe ovarian hyperstimulation in high-risk patients. CASE: Presented here is, to the best of our knowledge, the first case of early severe ovarian hyperstimulation necessitating early transabdominal aspiration of ascites and intensive fluid and colloid (dextran and albumin) replacement, which developed despite administration of IV human albumin solution in an attempt to prevent severe ovarian hyperstimulation. CONCLUSIONS: Because IV albumin does not prevent severe ovarian hyperstimulation in absolute terms, its use in high-risk patients should not lead one astray. Further research should be directed at investigating the fundamental cause of ovarian hyperstimulation syndrome and developing a reliable predictive test for this complication.

Adult↗
PubMed1995

Laparoscopic removal of an abdominal pregnancy adherent to the appendix after ovulation induction with human menopausal gonadotrophin.

The laparoscopic management of tubal pregnancies has become a standard form of treatment. We present, for the first time, a successful laparoscopic approach in the management of early abdominal pregnancy. Although it is difficult to reach conclusions from such limited published experience, it nevertheless appears that early abdominal pregnancies can be treated via operative laparoscopy. The possible advantages of such a therapeutic approach include lower morbidity and mortality, and a better fertility prognosis.

Adult↗
PubMed1995

Laparoscopic unwinding of hyperstimulated ischaemic ovaries during the second trimester of pregnancy.

Successful unwinding of large, hyperstimulated, ischaemic-haemorrhagic adnexa by laparoscopy during the second trimester of pregnancy is described. Three women in their second trimester of pregnancy were treated by laparoscopy. In all cases, the ovaries were unwound and replaced in their anatomical position. Shortly after the procedure they became pink. Serial ultrasound examinations showed viable, intrauterine fetuses and ovaries with normal blood flow. Laparoscopic ovarian detorsion is a safe and easy procedure, and can be carried out in advanced gestation until approximately 20th week if special safety measures are adhered to.

Adult↗
PubMed1993

Severe abdominal complications after transvaginal ultrasonographically guided retrieval of oocytes for in vitro fertilization and embryo transfer.

Severe life-threatening complications as a result of ultrasonically guided ovum pick-up for IVF may rarely occur. We report 14 cases, out of 3,656 patients undergoing the procedure, presenting with a clinical picture of acute abdomen. In 9 patients tubo-ovarian and pelvic abscess were diagnosed; 3 were treated by laparotomy, whereas in the other 6, culdocentesis and drainage were performed. In 3 cases severe intra-abdominal bleeding occurred with 1 requiring laparotomy and hemostasis, whereas in the others laparoscopic drainage and hemostasis were sufficient. Ruptured endometriotic cystic masses caused acute abdomen in 2 patients; partial oophorectomy and drainage were essential operative procedures. We conclude that although severe postovum retrieval complications are rare, one has to be aware of their occurrence with the aim of accurate diagnosis and prompt intervention.

Abdomen, Acute↗
PubMed1992

[Laparoscopic hysterectomy].

Abdominal hysterectomy is one of the most common major operations in gynecology. However, it is associated with considerable morbidity and relatively slow recovery. We describe a laparoscopic procedure for removal of the uterus, with or without the adnexa, in women in whom abdominal hysterectomy would otherwise be indicated. Laparoscopy is performed with the 3-puncture technic and an additional incision for the electrocoagulation instrument. The infundibulopelvic and round ligaments are dissected and divided if oophorectomy is to be done. If not, the broad ligament lateral to the uterine body is similarly treated and finally the dissections are extended to the uterine vessels and the uterosacral and upper parts of the transverse cervical ligaments. Surgery is completed vaginally after deflation of the abdomen, as in vaginal hysterectomy. Laparoscopy is repeated when the vagina has been closed, to ensure hemostasis. We have successfully performed laparoscopic hysterectomy, with or without salpingo-oophorectomy, in 7 women, aged 39-57. The procedure lasted 90-160 minutes and postoperative discomfort was minimal. All patients returned to normal activity within 4 weeks and were delighted with the outcome as well as with the cosmetic results. This technique offers an attractive alternative to conventional approaches and has significant advantages. Nevertheless, further studies are necessary to evaluate the true efficacy of the procedure.

Adult↗
PubMed1990

The value of hysteroscopy in elderly women prior to in vitro fertilization-embryo transfer (IVF-ET): a comparative study.

Two hundred eighty-four hysteroscopies were performed in 312 (91%) candidates for in vitro fertilization and embryo transfer (IVF-ET) who were divided into two groups. Group I consisted of elderly women over 40 years, and group II of women below this age. Although visualization revealed uterine abnormalities in 29.9% of all patients, abnormal findings were significantly increased in the former group in comparison to the latter (P less than 0.001). This difference was attributed mainly to uterine rather than cervical pathology. Furthermore, in elderly women age-related uterine pathology such as submucous myomata, endometrial hyperplasia, and polyps were more prominent, while in younger patients other uterine lesions such as adhesions and tubal ostia occlusion were more common. Moreover, treatment prior to IVF-ET resulted in 7 clinical pregnancies (8.9%) in group I and in 41 clinical pregnancies (19.9%) in group II, all of which failed in one to three cycles previously. It seems that hysteroscopic evaluation may reduce the IVF-ET failure rate due to intrauterine abnormalities in elderly as well as young patients, thus it becomes an absolute prerequisite for all patients scheduled for an IVF program.

Adult↗
PubMed1990

Perceived temperamental characteristics and regulation of physiological stress: a study of wheezy babies.

Explored prospectively were the temperamental dimensions involved in the modulation of wheeziness in infancy. Subjects were 69 infants, 4 to 8 months old, referred to the emergency room because of wheeziness, and a control group of 30 infants, 4 to 8 months old, referred to the emergency room because of an acute illness other than wheeziness. Infant respiratory clinical score for wheeziness was registered and the Revised Infant Temperament Questionnaire and a demographic questionnaire were completed. Fourteen months later the recurrence of wheeziness attacks--that is, asthma--was investigated. Maternal reports of infant's rhythmicity significantly improved the prediction of asthma among wheezy babies; wheezy babies were perceived as significantly less active than nonwheezy babies.

Arousal↗
PubMed1988

Mullerian adenosarcoma of the uterus: report of a rare case and review of the literature.

A rare case of Mullerian adenosarcoma of the uterus is described, found during diagnostic curettage. Panhysterectomy was performed. These rare tumors have a low potential for malignancy and are characterized by benign epithelial and malignant stromal elements. They should be distinguished from the highly malignant mixed Mullerian tumors which contain, by definition, both carcinomatous and sarcomatous elements. The literature on the subject has been reviewed.

Female↗