Severe OHSS: An 'epidemic' of severe OHSS: a price we have to pay?
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Biomedical subjects
Publications and source records attributed to U Elchalal.
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OBJECTIVE: To assess the outcome of pregnancies conceived with the use of IVF that are complicated by severe ovarian hyperstimulation syndrome (OHSS). DESIGN: A retrospective nationwide multicenter study. SETTING: Sixteen of 19 tertiary care medical centers in Israel. PATIENT(S): All patients undergoing IVF who were hospitalized for severe OHSS between January 1987 and December 1996. MAIN OUTCOME MEASURE(S): Pregnancy rate (PR) and rates of multiple gestation, miscarriage, ectopic pregnancy, obstetric complications, and intervention. RESULT(S): A total of 163 patients who had severe OHSS after IVF treatment were identified, of whom 142 (87.1%) had undergone ET. The clinical PR was 73.2%; 42.3% were singletons, 33.6% were twins, 17.3% were triplets, and 6.7% were quadruplets. The miscarriage rate was 29.8%, whereas the incidence of ectopic pregnancy was 1.9%. Forty-four percent of all births were premature, and 62.1% of all newborns had low birth weight. The most common antenatal complications were pregnancy-induced hypertension (13.2%), gestational diabetes (5.9%), and placental abruption (4.4%). The rate of cesarean section was 44.1%. CONCLUSION(S): Among patients who have severe OHSS after IVF treatment, the pregnancy rate and the rates of multiple gestation, miscarriage, prematurity, low birth weight, pregnancy-induced hypertension, gestational diabetes, and placental abruption are significantly higher than those reported previously for pregnancies conceived with the use of assisted reproductive techniques.
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OBJECTIVE: To evaluate clinical-pathological aspects of mitotically active leiomyomas. STUDY DESIGN: Twenty patients with smooth muscle tumors of the uterus, with 5-9 mitotic figures per 10 high power fields and without atypia or necrosis were studied. The clinical and pathological characteristics of these tumors were reviewed and analyzed. RESULTS: Patients' ages ranged from 33 to 63 years (mean 42.5 years). The size of the tumors ranged from 1.5 to 9.5 cm (mean 5.4 cm). On gross examination all tumors appeared as typical leiomyomas. Treatment included hysterectomy in 16 patients and myomectomy in four. Follow-up periods ranged from 1.5 to 11 years (mean 6.8 years). None of the patients developed a recurrent tumor. CONCLUSION: The benign clinical behavior of such tumors supports their current designation as mitotically active leiomyomas, thus deleting the previous misnomer 'smooth muscle tumors of uncertain malignant potential'. Myomectomy is an appropriate treatment, particularly in young patients interested in reproduction.
The objective of this study was to define the incidence of febrile morbidity and its causes in severe and critical ovarian hyperstimulation syndrome (OHSS). For this purpose, we reviewed the medical records of all OHSS patients hospitalized in 16 out of 19 tertiary medical centres in Israel between January 1987 and December 1996. Febrile morbidity was defined as at least one episode of temperature rise above 38 degrees C lasting > or =24 h. A total of 2902 patients (3305 hospitalizations) with OHSS was identified, of whom 196 had severe, and 13 critical, OHSS. Among the 209 patients investigated the incidence of febrile morbidity was 82.3%, of which 20.5% was attributed to urinary tract infection, 3.8% to pneumonia, 3.3% to upper respiratory tract infection, 2.0% to intravenous line phlebitis, 1.0% to cellulitis at an abdominal puncture site, 1.0% to postoperative wound infections and 0.5 % to gluteal abscess at the site of progesterone injection. Non-typical organisms were frequently isolated, such as Pseudomonas, Proteus, Klebsiella and Enterobacter species. No infectious aetiology was found in 105 patients (50.2%). Hypoglobulinaemia was recorded in most patients, while ascitic and pleural fluids aspirated from these patients contained high globulin concentrations. We conclude that infection-related febrile morbidity in severe and critical OHSS is high, and may be attributed to some degree of immunodeficiency associated with loss of plasma globulins to the third space. However, non-infection-related febrile morbidity is even higher and may be attributed to endogenous pyrogenic mechanisms.
Ovarian hyperstimulation syndrome (OHSS) is a serious complication affecting ovulation induction. Its most severe manifestation takes the form of massive ovarian enlargement and multiple cysts, haemoconcentration and third-space accumulation of fluid. The full-blown clinical syndrome may be complicated by renal failure and oliguria, hypovolaemic shock, thromboembolic episodes, adult respiratory distress syndrome (ARDS), and death. Although the pathophysiology of this syndrome has not been completely elucidated, it seems likely that the increased capillary permeability triggered by the release of vasoactive substance secreted by the ovaries under human chorionic gonadotrophin (HCG) stimulation plays a key role in this syndrome. Several factors such as histamine, serotonin, prostaglandins, prolactin, and a variety of other substances have been implicated in this process in the past. At present, factors belonging to the renin-angiotensin system, cytokines including the interleukins, tumour necrosis factor alpha, endothelin-1 and vascular endothelial growth factor (VEGF) are thought to be involved in triggering increased vascular permeability after ovulation induction treatment. This manuscript summarizes the current knowledge of the pathophysiology of ovarian hyperstimulation syndrome with emphasis on the correlation of the various factors with the clinical phenomena of this iatrogenic syndrome.
Cervical pregnancy (CP) is a rare life-threatening form of ectopic pregnancy occurring in 1 of 8628 deliveries. We reviewed 117 cases of CP in the English language literature from 1978 and added three cases from our department. Etiology of CP is still unknown, but there is evidence for its association with cervicouterine instrumentation. The possible role of embryo chromosomal abnormality in the CP etiology is considered. Sonography improved pretreatment diagnosis up to 81.8 percent. Obligatory sonographic criteria of CP include endocervical localization of the gestational sac and trophoblastic invasion. About 60 percent of cervical pregnancies are with a viable fetus. The majority of patients with a cervical pregnancy are women with low parity, thus, the current treatment trend is to preserve their reproductive function. The main problem of conservative treatment is life-threatening hemorrhage after pregnancy evacuation. The use of cervical canal tamponade with a Foley catheter balloon led to reliable hemostasis in 92.3 percent of cases in which this method was used. Early diagnosis of CP allowed for treatment by chemotherapy in 32 cases, with an 81.3 percent success rate. Serial beta-human chorionic gonadotropin levels and transvaginal ultrasound with color Doppler are used to monitor therapy. Another conservative treatment modality is local intrasac KCI injections. Hysterectomy is recommended mostly for second and third trimester cervical pregnancy, or for uncontrolled bleeding.
Ritualistic sexual mutilation of females dates back to the fifth century B.C. This traditional practice is a social as well as a health issue that affects the physical and mental well being of the women who undergo it. Although practiced mostly in African countries north of the equator and the Middle-East, concern has recently been expressed that female genital mutilation is also being practiced in the U.S., Europe, and other western countries by immigrants from these countries. This review describes the various types of female genital mutilation and presents the historical and cultural background of the tradition, outlines the medical, psychological and sexual problems, and discusses the current status and future outlook for this tradition, emphasizing social, medical, and legislative aspects.
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Germ cell tumors (GCT) compose most of the preadolescent malignant ovarian tumors; dysgerminoma being the most common (48%), followed by endodermal sinus tumor, immature teratoma, mixed GCT and embryonal carcinoma. The percentage of malignant epithelial ovarian tumors rises with increasing age, while that of the GCT tumors declines. Of all tumor markers discussed, only AFP and hCG are being routinely monitored. Their most effective use is in monitoring response to therapy and detecting recurrences early. The current therapeutic regimens are presented, among them bleomycin, etoposide and platinol (BEP) and other new regimens; their influence on the patients' fertility is discussed. Further improvement in the prognosis of these young patients will hopefully follow development of new surgical and chemotherapeutic approaches.
The great variability in the sonographic appearance of ovarian cystic teratomas poses difficulties for their diagnosis and classification. To overcome such difficulties, we have proposed a simplified classification of the pathognomonic echo patterns of ovarian cystic teratomas based on three basic types of echo pattern. In a prospective study of 118 echogenic adnexal masses, with postoperative histological confirmation, this classification enabled the correct diagnosis to be made in 115 cases (accuracy rate, 97.45%). In the three cases misdiagnosed preoperatively as ovarian cystic teratoma, the tumors proved to be benign and included a serous cyst adenoma, a serous cyst adenofibroma and a Brenner tumor. We suggest that, with our proposed classification of the echo patterns of ovarian cystic teratomas, sonography can become a quick and accurate tool in the recognition of this condition.
Surgical therapy of lichen sclerosus of the vulva consists of three main operations: vulvectomy (with or without a skin graft), cryosurgery, and laser ablation. It is indicated in two conditions, either when malignant transformation is present or is likely to occur, or when medical treatment has failed. The overall risk for malignant transformation of vulvar lichen sclerosus is low, ranging between 0 and 9 percent. However, specific histological criteria, such as mixed dystrophy, have recently been associated with higher malignancy rates. Vulvectomy is indicated only when these criteria are met. Both skinning and simple vulvectomies are associated with recurrence rates as high as 50 percent. However, better sexual function and cosmetic results have been reported in the former, especially with concomitant split skin grafting. Cryosurgery also has high recurrence rates, although short-term results are favorable. Although only small series have been reported, laser therapy seems to carry better long-term results than other modes of treatment. Convalescence is complete within 6 weeks posttreatment, and remission rates are as high as 85 percent at 3 years of follow-up. The high recurrence rate of all surgical modalities makes surgical treatment suitable only for patients who failed to respond to multiple medical treatments such as topical high potent steroid ointments, testosterone, and retinoids.
OBJECTIVE: To determine whether women with epithelial ovarian cancer are more likely to have been exposed to fertility drugs, and in particular hMG, than healthy population controls. DESIGN: A nationwide case-control study. PATIENTS: Two hundred living women 36 to 64 years of age, with a histologically confirmed diagnosis of primary invasive or borderline epithelial ovarian cancer that was first diagnosed and reported to the Israel Cancer Registry between January 1, 1990 and September 1, 1993 were enrolled. There were 164 (82%) invasive and 36 (18%) borderline epithelial ovarian tumors among the 200 cases. The controls were 408 women from the same dialing areas selected by random digit dialing. Cases and controls were interviewed using a standard questionnaire. A multivariate logistic model was used to assess the association of fertility drug use and ovarian cancer, controlling for variables found to be statistically associated with this outcome on univariate analysis. RESULTS: Twenty-four women with epithelial ovarian cancer (12%) and 29 healthy controls (7.1%) reported that they had used any fertility drug (adjusted odds ratio [OR] 1.31; 95% confidence interval [CI] 0.63 to 2.74). Among cases and controls, respectively, 22 and 24 reported that they had used hMG alone or in combination with clomiphene citrate (adjusted OR 1.42, 95% CI 0.65 to 3.12), and 11 and 6 reported that they had used hMG alone (adjusted OR 3.19, (95% CI 0.86 to 11.82). The risk was increased particularly in the subgroup of women with borderline ovarian tumors who had used hMG (adjusted OR 9.38, 95% CI 1.66 to 52.08). CONCLUSIONS: We conclude that the use of ovulation induction agents, in particular hMG, may increase the risk of epithelial ovarian tumors.
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A case report of sacrococcygeal teratoma prenatally diagnosed at 23 weeks of amenorrhea, subsequently causing dilatation of both lower and upper urinary tracts is presented. The importance of repeated ultrasonographic evaluation of fetuses with sacrococcygeal teratoma is discussed.
Identification of small ovarian benign cystic teratomas (dermoid cysts) is difficult and sometimes impossible by clinical findings alone. They may be missed even on direct inspection during laparotomy or laparoscopy. There are several typical ovarian sonographic signs which are known to occur frequently in women with benign ovarian cystic teratomas. High-resolution sonography can identify the cysts based on their typical sonographic signs. Since these very small dermoid cysts are sometimes undetected by the naked eye during the operation, ultrasonography with particular attention to the signs is very important. We present three cases reports that illustrate the problem and stress the contribution of preoperative sonography in the diagnosis and treatment of such cases.
Pulse oximetry is widely used to monitor the patient's well-being in anesthetic and neonatal practice. As a result of recent technologic and theoretical advances, it has emerged as a clinical tool in intrapartum fetal monitoring. Oximeters record both pulse rate and arterial oxygen saturation of the fetus and they may be adapted to derive an estimate of peripheral perfusion. Reflectance oximetry is more accurate than transmission oximetry in intrapartum fetal management. This method uses the pulsatile changes of red and infrared light reflected from tissue to estimate arterial oxygenation. Pulse oximetry is cheap, non-invasive, simple to operate, relatively accurate and has a fast response time. Factors adversely affecting the accuracy of the pulse oximeter output include transducer displacement, peripheral vasoconstriction, hypotension, anemia, presence of intravascular dyes, meconium staining, fetal hair and scalp edema. Fetal pulse oximetry is limited by a wide normal range and inadequate calibration. The amniochorionic membranes however do not affect oximetry readings so that this method may be applied before rupture of the membranes, i.e. before labor. Once successfully developed, fetal pulse oximetry could potentially be used in combination with other monitoring techniques to reduce instrumental and operative interventions during labor and improve perinatal outcome.