Abstract:
:Reflective of increasing attention to male sterilization are the development in China of the so-called "no scalpel" vasectomy technique, experiments with predicting reversibility through measurement of the cytometry of testicular aspirates, and research on issues such as the effects of vasectomy on spermatogenesis, the immunological consequences of the procedures, and regeneration of the vas deferens proximal to the vas occlusion. Studies have shown that if the vasectomy technique does not allow for permanent vas occlusion (i.e., interpose connective tissue between the proximal and distal ends of the vas), spontaneous recanalization may occur to prevent too much pressure on the testicle. The major histologic findings in such cases are the sprouting of tubules and extravasation of sperm. Even with excellent surgical technique, anatomic and immunologic changes associated with vasectomy imply a return to fertility in little over 50% of cases. Successful reversal can be enhanced, however, by vas sectioning in the straight portion and away from the convoluted portion, minimal resection, closure of the proximal end by fulguration of the mucosal surface, and fascial interposition. Immune factors appear to play a less significant factor in vasovasectomy failure than was previously believed; damage to the testis and epididymis is more likely implicated. A byproduct of the proliferation of research on vasectomy and its sequelae has been greater understanding of the mechanism of sperm transport during ejaculation. There is a constant rate of sperm disappearance after vasectomy, but the number of ejaculations rather than the duration of time after the procedure is the crucial factor to achievement of aspermia.
journal_name
Curr Opin Obstet Gynecoljournal_title
Current opinion in obstetrics & gynecologyauthors
Davis JEsubject
Has Abstractpub_date
1990-08-01 00:00:00pages
535-40issue
4eissn
1040-872Xissn
1473-656Xjournal_volume
2pub_type
杂志文章,评审abstract:PURPOSE OF REVIEW:The prevalence and impact of elective deliveries occurring prior to 39 weeks' gestation has been the focus of several important studies published in recent medical literature. Defined as scheduled deliveries in the absence of medical or obstetrical indications, concern has been raised that many of the...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:10.1097/GCO.0b013e3283404eb4
更新日期:2010-12-01 00:00:00
abstract::For the majority of women, gynecologic cancer is a survivable disease. A brief overview of the recent findings on the psychological and behavioral aspects of gynecologic cancer is provided. The discussion is organized by disease-relevant time points, from prevention to recovery or death. Recognition of the positive re...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:
更新日期:1995-02-01 00:00:00
abstract:PURPOSE OF REVIEW:To review recent literature on medical accuracy, program effectiveness, and ethical concerns related to abstinence-only policies for adolescent sexuality education. RECENT FINDINGS:The federal government invests over 175 million dollars annually in 'abstinence-only-until-marriage' programs. These pro...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:10.1097/GCO.0b013e3282efdc0b
更新日期:2007-10-01 00:00:00
abstract:PURPOSE OF REVIEW:The purpose is to review current recommendations for the evaluation and management of delayed puberty in the female patient. RECENT FINDINGS:Kisspeptin activation has emerged as an important factor for initiation of pubertal development. Causes of delayed puberty can be considered in four main catego...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:10.1097/GCO.0000000000000303
更新日期:2016-10-01 00:00:00
abstract:PURPOSE OF REVIEW:Borderline tumors of the ovary are seen commonly in obstetrics and gynecology practices. This review will outline the most recent information regarding the epidemiology, molecular pathogenesis, pathology, and clinical management of these tumors. RECENT FINDINGS:In the past, borderline ovarian tumors ...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:10.1097/00001703-200302000-00006
更新日期:2003-02-01 00:00:00
abstract:PURPOSE OF REVIEW:Surgery can be an important treatment option for women with symptomatic endometriosis. This review summarizes the recommended preoperative work up and techniques in minimally invasive surgery for treatment of deeply infiltrating endometriosis (DIE) involving the obliterated posterior cul-de-sac, bowel...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:10.1097/GCO.0000000000000291
更新日期:2016-08-01 00:00:00
abstract:PURPOSE OF REVIEW:To describe the beneficial effects of micronutrient supplementation on male fertility. RECENT FINDINGS:Several micronutrients have beneficial effects on sperm quality, as well on male fertility (e.g. pregnancy rate). A deliberate use of micronutrients might be helpful for infertile patients. Healthca...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:10.1097/GCO.0000000000000063
更新日期:2014-06-01 00:00:00
abstract:PURPOSE OF REVIEW:Since its discovery in 1994, leptin has appeared to be a pleiotrophic hormone, governing energy homeostasis and affecting many tissues in the body. Numerous pieces of evidence have accumulated showing that leptin potentially plays an important role in the control of the reproductive function. RECENT ...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:10.1097/01.gco.0000193004.35287.89
更新日期:2006-06-01 00:00:00
abstract::The principles of managed care are more difficult to apply to preventive medical treatments, such as hormone replacement therapy, than to the investigation and treatment of established disease. In addition to an ageing society with increased health demands, the use of hormone replacement therapy is increasing in most ...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:
更新日期:1997-08-01 00:00:00
abstract:PURPOSE OF REVIEW:The most common method of antepartum fetal surveillance is the nonstress test (NST). Although it has satisfactory false-negative rates, dubious nonreactive results may challenge the physician. Any method or factor increasing the reactive NST results or shortening the time to attain a reactive test may...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:10.1097/GCO.0000000000000050
更新日期:2014-04-01 00:00:00
abstract::Through the study of naturally occurring mutations in humans, the creation of mutations by site-directed mutagenesis, and the production of transgenic knockout mice, further understanding of molecular reproductive endocrinology had been achieved. Mutations in the aromatase gene in females have confirmed that its defic...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:
更新日期:1995-10-01 00:00:00
abstract:PURPOSE OF REVIEW:To analyse the reasons why foetal heart rate (FHR) monitoring failed to fulfil the initial expectations of unequivocally decreasing perinatal morbidity and mortality, and to summarize the most recent advances in this field. RECENT FINDINGS:It is now clear that expectations towards FHR monitoring at t...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:10.1097/GCO.0b013e328337233c
更新日期:2010-04-01 00:00:00
abstract::The preponderance of recent data suggests that endometriosis does not adversely affect in-vitro fertilization pregnancy rates. However, many studies demonstrate impaired oocyte quality, decreased fertilization, and compromised implantation rates. Such findings give insight into the mechanisms by which endometriosis ma...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:10.1097/00001703-200106000-00005
更新日期:2001-06-01 00:00:00
abstract::This review explores the recent experience with, and the basis for, the use of selective estrogen receptor modulators to treat and prevent breast cancer. As new agents are unveiled, they will continue to be tested against tamoxifen. A number of new selective estrogen receptor modulators are in clinical development in ...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:10.1097/00001703-200202000-00002
更新日期:2002-02-01 00:00:00
abstract:PURPOSE OF REVIEW:To summarize results from the Women's Health Initiative trial and other recent randomized placebo-controlled trials of hormone replacement therapy, which fundamentally changed our understanding of its risks and benefits. RECENT FINDINGS:The Women's Health Initiative study for the first time provided ...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:10.1097/00001703-200312000-00001
更新日期:2003-12-01 00:00:00
abstract:PURPOSE OF REVIEW:To describe the current role of radiation therapy and specific types of radiation therapy used in the management of early stage, locoregionally advanced, and metastatic breast cancer. RECENT FINDINGS:The role of radiation therapy in the management of breast cancer has not changed in recent decades, h...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:10.1097/GCO.0b013e3283425401
更新日期:2011-02-01 00:00:00
abstract:PURPOSE OF REVIEW:Robotic surgery is rapidly taking the place of laparoscopy in many gynecologic oncology practices. Numerous practitioners have published their experience with this new technology. A review of their findings is timely and relevant. RECENT FINDINGS:The majority of case series of robotic surgery for hys...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:10.1097/GCO.0b013e32831ffe8e
更新日期:2009-02-01 00:00:00
abstract::Few randomized studies have addressed the best choice of adjuvant radiation therapy after surgery for stage I endometrial cancer. Although whole pelvic radiation decreases the incidence of pelvic and vaginal cancer recurrence, there is no convincing evidence that it improves survival in women who have been completely ...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:10.1097/00001703-200202000-00012
更新日期:2002-02-01 00:00:00
abstract:PURPOSE OF REVIEW:The development of robotic technology has facilitated the application of minimally invasive techniques for complex operations in gynecologic oncology. The objective of this article is to review the published literature regarding robotic surgery and its application to gynecologic cancer. RECENT FINDIN...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:10.1097/GCO.0b013e32834daebc
更新日期:2012-02-01 00:00:00
abstract::Misoprostol, an orally active prostaglandin E1 analogue, has been used widely by the vaginal and oral routes for labour induction at or near term. Several recent trials have confirmed that it is highly effective. Overall caesarean section rates appear to be reduced, despite a relative increase in caesarean sections fo...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:10.1097/00001703-200112000-00005
更新日期:2001-12-01 00:00:00
abstract:PURPOSE OF REVIEW:Common and important psychosomatic disorders in pregnancy reviewed here include perinatal depression, posttraumatic stress disorders, anxiety disorders, eating disorders, and postpartum psychosis. RECENT FINDINGS:Research has focused on antenatal depression as postpartum depression often has onset pr...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:10.1097/GCO.0b013e3280825614
更新日期:2007-04-01 00:00:00
abstract:PURPOSE OF REVIEW:The last several years have seen a number of important clinical and academic advances in long-acting reversible contraceptive (LARC) methods, such that many professional medical organizations now recommend these methods as first-line contraception for all women. RECENT FINDINGS:Recent data support th...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:10.1097/GCO.0000000000000227
更新日期:2015-12-01 00:00:00
abstract:PURPOSE OF REVIEW:To summarize recent advances in oocyte and embryo cryopreservation techniques and outcomes. RECENT FINDINGS:Vitrification is gradually replacing slow freezing due to a better survival rate after thawing. Most units use vitrification for both oocyte and blastocyst cryopreservation, as these two biolog...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:10.1097/GCO.0b013e32834874e2
更新日期:2011-08-01 00:00:00
abstract:PURPOSE OF REVIEW:Fetal magnetic resonance imaging (MRI) is a relatively new clinical application but is becoming increasingly used in fetal medicine in combination with the established technique of antenatal ultrasound. A review of the literature to date provides information for clinicians to help assess which patient...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:10.1097/GCO.0b013e32832947ab
更新日期:2009-04-01 00:00:00
abstract:PURPOSE OF REVIEW:To review the recent literature regarding modifications of abdominal radical hysterectomy as well as development of new approaches including laparoscopic, vaginal, and robotic radical hysterectomy. RECENT FINDINGS:Nerve-sparing radical hysterectomy technique allows for significant reduction in postop...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:10.1097/GCO.0b013e3282f2288a
更新日期:2008-02-01 00:00:00
abstract:PURPOSE OF REVIEW:Digital media, including the Internet, social networking sites, text messaging, and mobile applications, are ubiquitous among adolescents and young adults. These platforms enable users to obtain important information on a multitude of health topics, they may facilitate risk-taking behaviors, and they ...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:10.1097/GCO.0000000000000104
更新日期:2014-10-01 00:00:00
abstract:PURPOSE OF REVIEW:More than 50% of all gynecologic cancers can be classified as rare tumors (defined as an incidence of <6 per 100 000) and as such represent a major challenge for clinicians. RECENT FINDINGS:The rapidly increasing number of targeted therapies provides a unique opportunity to improve treatment options ...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:10.1097/GCO.0000000000000144
更新日期:2015-02-01 00:00:00
abstract::The advent of the AIDS epidemic coupled with enhanced recognition of the morbidity and mortality associated with occupationally acquired hepatitis B virus infection has resulted in a great interest in the epidemiologic characteristics of contact of surgical personnel with patient's blood and other bodily fluids in ass...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:
更新日期:1993-06-01 00:00:00
abstract:PURPOSE OF REVIEW:The radical surgical approach in the treatment of vulvar cancer patients has led to a favourable prognosis for the majority of patients with early stage vulvar cancer. However, morbidity is impressive, leading to more individualized treatment. The authors have reviewed the most recent literature on th...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:10.1097/00001703-200402000-00012
更新日期:2004-02-01 00:00:00
abstract::Child sexual abuse is being recognized as a common and serious problem which affects children regardless of their age, sex, socio-economic class, or geographic location. Children of all ages, from infancy to young adulthood, have been victims of abuse. It is well accepted that the number of reported incidents of child...
journal_title:Current opinion in obstetrics & gynecology
pub_type: 杂志文章,评审
doi:
更新日期:1993-12-01 00:00:00