Abstract：
:Continuous 24-hour observations of fetal breathing were performed in 20 normal, pregnant women between 24 and 28 weeks' gestation by real-time ultrasound. Fetuses made breathing movements approximately 14% of the time. No change in breathing activity after a maternal meal was observed, but a significant increase in the incidence of fetal breathing activity was noted overnight. Fetuses at 24 to 28 weeks' gestation breathed at a rate of 44 breaths per minute, and the longest period of apnea noted was 14 minutes. These data suggest that the pattern and incidence of fetal breathing at 24 to 28 weeks' gestation are different from those of fetuses observed in the last 10 weeks of pregnancy. A maturational process in the control of fetal breathing may explain these observations.
journal_name
Am J Obstet Gynecoljournal_title
American journal of obstetrics and gynecologyauthors
Natale R,Nasello-Paterson C,Connors Gdoi
10.1016/0002-9378(88)90146-9subject
Has Abstractpub_date
1988-02-01 00:00:00pages
317-21issue
2eissn
0002-9378issn
1097-6868pii
0002-9378(88)90146-9journal_volume
158pub_type
杂志文章abstract：OBJECTIVE:Before the availability of modern imaging studies the diagnosis of septic pelvic thrombophlebitis causing prolonged puerperal fever was difficult to confirm without surgical exploration. With the use of computed tomography infection-related pelvic phlebitis can now be confirmed, and this study was designed to...
journal_title：American journal of obstetrics and gynecology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/s0002-9378(99)70450-3
更新日期：1999-07-01 00:00:00
abstract：:Twin-twin transfusion syndrome associated with acute polyhydramnios in one sac and severe oligohydramnios in the other, which characteristically is diagnosed between 18 and 28 weeks, is associated with a high mortality rate for the involved twins. Patients who are managed without intervention have essentially 100% per...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(90)90618-h
更新日期：1990-11-01 00:00:00
abstract：:Effective communication is a hallmark of safe patient care. Challenges to effective interprofessional communication in maternity care include differing professional perspectives on clinical management, steep hierarchies, and lack of administrative support for change. We review principles of high reliability as they ap...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/j.ajog.2011.04.021
更新日期：2011-08-01 00:00:00
abstract：:This study examines the use of episiotomy and the frequency of perineal lacerations in a primary care maternity center staffed by certified nurse midwives (Booth Maternity Center) and a tertiary care teaching hospital where deliveries were performed by physicians (Thomas Jefferson University Hospital). The study sampl...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(89)90158-0
更新日期：1989-05-01 00:00:00
abstract：:Previous studies in breast and bladder cancer have suggested that epidermal growth factor receptor is expressed by only a proportion of cancers and is associated with poor clinical outcome. We used a monoclonal antibody specifically reactive with the extracellular domain of the epidermal growth factor receptor to loca...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(11)80044-x
更新日期：1991-02-01 00:00:00
abstract：BACKGROUND:During prenatal follow-up of twin pregnancies, accurate identification of birthweight and birthweight discordance is important to identify the high-risk group and plan perinatal care. Unfortunately, prenatal evaluation of birthweight discordance by 2-dimensional ultrasound has been far from optimal. OBJECTI...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2017.10.009
更新日期：2018-01-01 00:00:00
abstract：OBJECTIVES:Our objectives were to document the causes of fluid absorption during continuous flow hysteroscopy and to determine under which operative conditions fluid overload may occur. STUDY DESIGN:Fifteen patients underwent operative hysteroscopy with 2% ethanol solution for uterine distention. Absorption of fluid w...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(11)91417-3
更新日期：1992-08-01 00:00:00
abstract：:In an evaluation of the limulus lysate assay (LLA) as a method for detecting gonococcal endotoxin in cervical exudates diluted 1:800, positive LLA results were obtained from 17 of 18 patients (94%) with culture-proved gonococcal cervicitis, and negative results were obtained from 22 of 22 patients (100%) with culture-...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(80)90702-4
更新日期：1980-07-01 00:00:00
abstract：:286 patients between ages 16-48 with cystic adnexal masses were treated with estrogen and progesterone for 6 weeks. Persistence of the adnexal mass occurred in 81 patients and surgical exploration was done. All patients explored with an ovarian enlargement had an ovarian neoplasm causing the enlargement. There were...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(73)90913-7
更新日期：1973-06-15 00:00:00
abstract：:Eight patients with squamous cell carcinoma in situ of the vagina were treated with monthly 5 day courses of 20% 5-fluorouracil cream applied to the vagina. Seven (87.5%) of the women had an initial complete response; however, three subsequently developed recurrence after the treatment was stopped. They were retreated...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(79)90709-9
更新日期：1979-10-01 00:00:00
abstract：OBJECTIVE:The study was performed to test the knot integrity of parallel and nonidentical sliding knots with the use of monofilament suture. STUDY DESIGN:We investigated the proportion of parallel sliding knots that become untied compared with nonidentical sliding knots in four different monofilament suture configurat...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(03)00947-5
更新日期：2004-01-01 00:00:00
abstract：OBJECTIVE:We performed a metaanalysis of seven published randomized clinical trials to estimate more precisely the effect of prophylactic antibiotics on neonatal mortality, clinical sepsis of the neonate, respiratory distress syndrome, intraventricular hemorrhage, and necrotizing enterocolitis. STUDY DESIGN:To evaluat...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,meta分析
doi：10.1016/s0002-9378(96)70433-7
更新日期：1996-02-01 00:00:00
abstract：:Lidocaine was recently found to rapidly cross the placenta and result in considerable fetal exposure after local infiltration of the perineum for episiotomy. For this reason, a more appropriate agent for local perineal infiltration might be a drug with rapid metabolism and inactive metabolites. 2-Chloroprocaine, an es...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(87)80313-7
更新日期：1987-11-01 00:00:00
abstract：OBJECTIVE:The objective of this investigation was to characterize soluble endoglin (sEng) concentrations in second-trimester serum of women who either develop preeclampsia or have a normal pregnancy. STUDY DESIGN:Single second-trimester serum samples obtained from healthy, nonsmoking women who subsequently developed s...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2007.03.058
更新日期：2007-08-01 00:00:00
abstract：:The concentrations of certain steroids in arterial and ovarian venous blood were measured in 42 postmenopausal women undergoing hysterectomy for uterine disease. A concentration gradient across the ovary was found for testosterone in 21 women, for androstenedione in 16, for estradiol in 15, for estrone in 8, and for d...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(80)90287-2
更新日期：1980-11-01 00:00:00
abstract：OBJECTIVE:Recently the Accreditation Council for Graduate Medical Education placed restrictions on all residency programs that limited work hours to 80 hours per week. The objective of this study was to determine the work hours for practicing obstetrician-gynecologists in an urban center. STUDY DESIGN:A questionnaire ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/s0002-9378(03)00888-3
更新日期：2003-09-01 00:00:00
abstract：OBJECTIVE:This study was undertaken to compare the calciuric response in symptom-free primigravid women to an oral calcium load between those with normal urinary calcium excretions and those with relatively low urinary calcium excretions. STUDY DESIGN:This was a prospective clinical trial. Eligible primigravid women b...
journal_title：American journal of obstetrics and gynecology
pub_type： 临床试验,杂志文章
doi：10.1016/s0002-9378(99)70028-1
更新日期：1999-06-01 00:00:00
abstract：:Assisted reproductive technologies have aided thousands of couples, but complications have resulted in multifetal pregnancies creating a bitter irony for infertility patients. In an effort to increase the rate of intact survival, we have successfully performed transabdominal first-trimester selective termination proce...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(90)90922-t
更新日期：1990-06-01 00:00:00
abstract：:A new low-frequency Doppler shift signal associated with fetal breathing has been observed. This signal is out of phase with the previously described signal from the inferior vena cava and originates from the umbilical vein. ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(80)90567-0
更新日期：1980-01-01 00:00:00
abstract：:Late in 1995 and early 1996, 4 epidemiologic studies were published that resulted in a crude mean weighted relative risk of approximately 2 when third-generation oral contraceptives were compared with second-generation oral contraceptives as risk factors for venous thromboembolism. This article reviews empirical evide...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1053/ob.1998.v179.a93059
更新日期：1998-09-01 00:00:00
abstract：OBJECTIVE:Fetal to neonatal transition involves a myriad of endocrine and renal adaptive changes triggered by multiple simultaneous stimuli. We examined the extent to which ventilation and umbilical cord occlusion have an impact on the many endocrine and renal function changes in fetal sheep at 133 +/- 1 day of gestati...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(93)90422-f
更新日期：1993-12-01 00:00:00
abstract：:At the Department of Obstetrics and Gynecology of Tohoku University, radical hysterectomy with pelvic lymphadenectomy had been performed on patients with microinvasive carcinoma of the uterine cervix before 1966. Investigation of lymph nodes of 90 patients treated in this manner has shown no lymph node metastasis of t...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(16)32996-9
更新日期：1979-11-01 00:00:00
abstract：OBJECTIVE:Our purpose was to compare the accuracy of ultrasonographic and manual cervical examinations for the prediction of preterm delivery. STUDY DESIGN:One hundred two singleton pregnancies at high risk for preterm delivery were followed up prospectively from 14 to 30 weeks with both serial cervical ultrasonograph...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(97)70259-x
更新日期：1997-10-01 00:00:00
abstract：OBJECTIVE:Our purpose was to analyze 3 obstetric outcomes according to the various forms of congenital uterine malformation after in vitro fertilization and embryo transfer. STUDY DESIGN:We conducted a retrospective analysis of data from 24 patients with the following types of congenital uterine malformation: 6 unicom...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(96)70255-7
更新日期：1996-07-01 00:00:00
abstract：OBJECTIVE:Several studies have shown that abnormal intrapartum fetal heart rate patterns are the results from pre-existing fetal brain damage. We evaluated intrapartum fetal heart rate pattern of cytomegalovirus-infected fetuses and correlated the patterns with neurologic outcomes. STUDY DESIGN:Between 1991 and 2001, ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2004.03.015
更新日期：2004-10-01 00:00:00
abstract：INTRODUCTION:The purpose of this study was to compare transobturator tape (MONARC) with tension-free vaginal tape in patients with borderline low maximum urethral closure pressure. STUDY DESIGN:Historical cohort analysis of 3-month outcomes in 145 subjects (MONARC = 85; tension-free vaginal tape = 60). A cut-off point...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2006.07.011
更新日期：2006-12-01 00:00:00
abstract：:The possibility of dispersing viral deoxyribonucleic acid during carbon dioxide laser treatment of human papillomavirus-containing genital infections has been investigated with a commercially available dot blot hybridization technique. The viral ribonucleic acid probes were specific for groups of human papillomavirus ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(90)90705-c
更新日期：1990-10-01 00:00:00
abstract：:The angiotensin II sensitivity test has been used to predict the development of hypertension during pregnancy. We investigated the systolic/diastolic ratios of flow velocity waveforms in the uterine and umbilical arteries by means of a color Doppler system in 15 healthy women at 24 to 26 weeks' gestation. A significan...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(90)90015-y
更新日期：1990-05-01 00:00:00
abstract：:In women, the definition of polycystic ovary syndrome (PCOS) has become broad and includes several possible phenotypes. Because several features of PCOS may be in evolution in adolescents, we suggest that only firm criteria should be used to make a diagnosis of PCOS during adolescence. Hyperandrogenism, oligomenorrhea...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/j.ajog.2010.03.008
更新日期：2010-09-01 00:00:00
abstract：OBJECTIVE:We used a mouse model of infection-induced preterm delivery to examine the roles of 2 adaptor proteins with central functions in Toll-like receptor signaling: MyD88 (myeloid differentiation primary-response gene 88) and TRIF (Toll/IL-1 receptor (TIR)-domain-containing adaptor protein-inducing IFN-beta). STUD...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2008.08.038
更新日期：2009-01-01 00:00:00
