Abstract：
:This study was designed to test the hypothesis that the thermal response to endurance exercise is altered by the thermal adaptations to pregnancy. Accordingly, rectal temperature was monitored in 18 recreational athletes before, during, and after 20 minutes of continuous exercise before conception and every 6 to 8 weeks during pregnancy. Mean exercise intensity was 64% of VO2 max before conception and did not change during pregnancy. However, the peak rectal temperature reached during exercise decreased by 0.3 degrees C at 8 weeks and then fell at a rate of 0.1 degrees C per lunar month through the thirty-seventh week. This appeared to be related to changes in resting temperature, thermal mass, sweating threshold, and venous capacitance that began early in pregnancy. These data suggest that the magnitude of any exercise-associated thermal stress for the embryo and fetus is markedly reduced by the maternal physiologic adaptations to pregnancy.
journal_name
Am J Obstet Gynecoljournal_title
American journal of obstetrics and gynecologyauthors
Clapp JF 3rddoi
10.1016/0002-9378(91)90015-jsubject
Has Abstractpub_date
1991-12-01 00:00:00pages
1684-9issue
6 Pt 1eissn
0002-9378issn
1097-6868pii
0002-9378(91)90015-Jjournal_volume
165pub_type
杂志文章abstract：OBJECTIVE:The route of delivery in eclampsia is controversial. We hypothesized that adverse maternal and perinatal outcomes may not be improved by early cesarean delivery. STUDY DESIGN:This was a randomized controlled exploratory trial carried out in a rural teaching institution. In all, 200 eclampsia cases, carrying ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.ajog.2012.04.009
更新日期：2012-06-01 00:00:00
abstract：:Prostacyclin synthesis is severely depressed in the umbilical arteries of neonates of mothers with gestational diabetes mellitus, juvenile-onset diabetes mellitus, or preeclamptic symptoms, and of mothers who smoke during pregnancy and diabetic mothers who smoke. The reduced production of prostacyclin might be respons...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(82)90354-4
更新日期：1982-12-01 00:00:00
abstract：OBJECTIVE:The objective of the study was to compare 3 different approaches for increasing clients' understanding of contraceptive effectiveness. STUDY DESIGN:We randomized 900 reproductive-age women in India and Jamaica to 1 of 3 charts presenting pregnancy risk. RESULTS:The most important reason for choosing a contr...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.ajog.2005.12.053
更新日期：2006-07-01 00:00:00
abstract：:Neurofibromatosis adversely affects reproductive performance. Fetal growth retardation as a complication of pregnancy in patients with neurofibromatosis had not been widely documented. The present cases suggest that pregnant patients with neurofibromatosis may have an increased risk for growth-retarded babies. ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(87)80167-9
更新日期：1987-08-01 00:00:00
abstract：OBJECTIVE:The objective of the study was to determine whether transversus abdominis plane (TAP) block reduces postoperative pain when compared with trocar site infiltration of bupivacaine in gynecological laparoscopy. STUDY DESIGN:This was a prospective, randomized, double-blinded clinical trial using patients as thei...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.ajog.2014.07.049
更新日期：2015-02-01 00:00:00
abstract：OBJECTIVE:We combined data from published reports of the relation between estrogen use and breast cancer. We specifically addressed the hypothesis that the addition of progestins to estrogen therapy reduces the risk of breast cancer. STUDY DESIGN:A meta-analysis was performed. RESULTS:Replacement hormone therapy is n...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,meta分析
doi：10.1016/s0002-9378(11)90784-4
更新日期：1993-05-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to review the validity of published studies that consider modifying physical activity during pregnancy to decrease preterm births and low birth weight. STUDY DESIGN:Presented is a critical review of extant literature, both case-control studies and studies of pregnant women follo...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/0002-9378(93)90374-r
更新日期：1993-04-01 00:00:00
abstract：OBJECTIVE:Our purpose was to study the likelihood of survival of infants who are born before 28 weeks of gestation and to examine the influence of fetal heart rate findings on neonatal death. STUDY DESIGN:In this retrospective study, we analyzed the mortality rate of infants at 2 months of age as a function of various...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2002.126291
更新日期：2002-10-01 00:00:00
abstract：OBJECTIVE:The aim of this study was to analyze lymphatic spread to pelvic, parametrial, and paraaortic lymph nodes in patients with cervical cancer. STUDY DESIGN:We reviewed 619 patients with invasive cervical cancer treated by radical abdominal hysterectomy and systematic pelvic or pelvic and paraaortic lymphadenecto...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2007.09.053
更新日期：2007-12-01 00:00:00
abstract：:In a large randomized, controlled study of fetal heart rate monitoring with either continuous electronic fetal heart monitoring or auscultation at specified intervals, only one pattern of deviation in the fetal heart rate correlated significantly with neonatal neurologic examinations at 0 to 48 hours and 72 hours to 1...
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：10.1016/0002-9378(91)90700-2
更新日期：1991-05-01 00:00:00
abstract：BACKGROUND:Open spina bifida is a major congenital anomaly with an estimated incidence of <1 in 1000. The diagnosis of open spina bifida is usually made during the second trimester, but first-trimester detection rate of spina bifida is increasingly reported. Recently, the mean choroid plexus length to occipitofrontal d...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2020.08.058
更新日期：2020-08-22 00:00:00
abstract：OBJECTIVE:We studied the effect of long-term heparin treatment on bone mass during pregnancy. STUDY DESIGN:Thromboprophylaxis with heparin was given to 39 women during pregnancy for a mean of 28 weeks and for an average of 6 weeks post partum. Bone mineral density measured with single-photon absorptiometry of the dist...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(94)70149-0
更新日期：1994-05-01 00:00:00
abstract：:The bioavailability of a single dose of intranasal nafarelin was evaluated in 15 healthy female volunteers. Each subject received a 400 micrograms intranasal and a 25 micrograms intravenous dose of nafarelin separated by at least 7 days. Blood samples were obtained frequently after each dose for determination of nafar...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(92)91710-r
更新日期：1992-02-01 00:00:00
abstract：OBJECTIVE:The cavitational ultrasonic surgical aspirator is a newer surgical instrument that has been shown to be effective in tumor resection. The purpose of this study was to evaluate its usefulness for cytoreduction of advanced ovarian cancer. STUDY DESIGN:Over a 24-month period patients with advanced ovarian cance...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(92)91345-b
更新日期：1992-03-01 00:00:00
abstract：OBJECTIVE:We tested the hypothesis that the proliferative estrogen effect on the endometrium is enhanced in obese vs lean animals. STUDY DESIGN:Using Zucker fa/fa obese rats and lean control, we examined endometrial cell proliferation and the expression patterns of certain estrogen-regulated proproliferative and antip...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2008.08.064
更新日期：2009-02-01 00:00:00
abstract：:The risk of infection from puerperal tubal ligation is studied 1, 2, 3, and 5 days postpartum. Aliquots of 52 oviduct homogenates and 26 endometrial saline aspirates were cultured in serum. PPLO, tryptic soy, and thioglycolate broth, and blood, PPLO, and chocolate agar. A Brown and Brenn Gram stain was run on ovidu...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(16)33944-8
更新日期：1970-06-15 00:00:00
abstract：:The aim of this study was to observe the sequential effects of oxygenation, umbilical cord occlusion, and finally cooling on circulating catecholamines and nonshivering thermogenesis in fetal sheep. We studied five fetal sheep at 132 +/- 3 days' gestation. The fetuses were first ventilated with oxygen; PaO2 levels wer...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(91)90655-b
更新日期：1991-01-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to describe the outcome of peripartum cardiomyopathy in patients cared for in a community hospital. STUDY DESIGN:The cases of peripartum cardiomyopathy treated at Central Baptist Hospital in Lexington, Kentucky, from January 1, 1992, to December 31, 1998, were reviewed. RESULTS...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2000.105402
更新日期：2000-05-01 00:00:00
abstract：:The plasma fibronectin concentration was abnormally elevated (greater than 400 micrograms/ml) in 16 of 17 normotensive gravid women who subsequently developed preeclampsia. Of this group, 13 had elevated levels detectable greater than or equal to 4 weeks before the onset of hypertension. Our results indicate that plas...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(86)90748-9
更新日期：1986-05-01 00:00:00
abstract：:Serum prolactin was measured simultaneously by a homologous radioimmunoassay in 92 parturients and their offspring at term, and in maternal serum and amniotic fluid during various stages of normal pregnancy. Serum levels of 208 +/- 8 ng. per millilter were found in maternal blood; the corresponding levels in the cord ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(75)90858-3
更新日期：1975-12-15 00:00:00
abstract：OBJECTIVES:The purpose of our study was to establish an in vitro tissue culture system to study eicosanoid metabolism in first-trimester trophoblastic tissue. Thromboxane A2, a potent vasoconstrictor, and prostacyclin, a potent vasodilator, were analyzed to evaluate their production in early pregnancy. STUDY DESIGN:Tr...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(12)80036-6
更新日期：1992-10-01 00:00:00
abstract：OBJECTIVE:Our purpose was to demonstrate reduced blood volume in preeclampsia compared with nonproteinuric gestational hypertension and normal pregnancy by use of independent measures of red blood cell and plasma volumes. STUDY DESIGN:Red blood cells labeled with a nonradioactive stable isotope of chromium and Evans' ...
journal_title：American journal of obstetrics and gynecology
pub_type： 临床试验,杂志文章
doi：10.1016/s0002-9378(98)70255-8
更新日期：1998-07-01 00:00:00
abstract：OBJECTIVE:The death of women from pregnancy-related causes remains a threat to national maternal and child health. Maternal deaths as persistent, albeit rare occurrences are overlooked if vital registration systems are relied on to report such deaths. STUDY DESIGN:Live birth records were matched with death records for...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(11)91629-9
更新日期：1992-07-01 00:00:00
abstract：:Healthy pregnant women underwent a mild exercise study to evaluate the effects of this amount of work on their fetuses. The results indicated that there were no direct correlations between exercise and fetal body or breathing movements at this particular work intensity (2.33 m). We found a relationship between the mat...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(83)90003-0
更新日期：1983-11-01 00:00:00
abstract：:Six subjects with distal ampullary ectopic pregnancies were treated with four doses of intravenous methotrexate (1.0 mg/kg) followed by four doses of leucovorin (0.1 mg/kg, intramuscularly). The diagnosis was established in all cases by laparoscopy following sonography and radioimmunoassay for serum beta subunit of hu...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(86)90716-7
更新日期：1986-06-01 00:00:00
abstract：:Although previous studies have suggested that the breech infant weighing less than 1,500 gm benefits from cesarean section, the published results have not demonstrated statistically significant differences. We have evaluated pediatric outcome data for 240 breech infants and 525 vertex infants who weighed less than 1,5...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(83)90807-4
更新日期：1983-07-01 00:00:00
abstract：:Like other forms of ectopic gestation, cervical pregnancy is a serious complication with potentially life-threatening consequences. Excessive bleeding almost invariably follows an attempt to evacuate this rare ectopic pregnancy. In most reported cases, hysterectomy has been required to control the severe hemorrhage. T...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(79)90878-0
更新日期：1979-05-15 00:00:00
abstract：OBJECTIVE:Our objective was to determine any associations among midtrimester cervical fluid sialidase activity, bacterial vaginosis, and subsequent spontaneous preterm birth. STUDY DESIGN:In this nested case-control study all patients (n = 126) with spontaneous preterm birth at <35 weeks' gestation and selected contro...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(99)70609-5
更新日期：1999-05-01 00:00:00
abstract：:Ocular malignant melanoma, similar to the cutaneous variety, may metastasize to the placenta, almost always in the presence of widespread disease. The prognosis is poor, and there is a 25% risk of spread to the fetus. All women with a history of this disease should be informed of the risks when they are contemplating ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(96)70626-9
更新日期：1996-05-01 00:00:00
abstract：:The therapeutic effectiveness of the carbon dioxide laser was evaluated in 43 pregnant women with extensive urogenital and anal condylomas. All patients received one treatment and were followed up for an average of 9 months after delivery. Laser failures (persistent disease) and recurrences (new disease) were stratifi...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(84)80024-1
更新日期：1984-01-01 00:00:00
