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61.
62.
The last few years have seen increasing concerns among anaesthetistsabout the risks of pharmacological prophylaxis for thromboembolicdisease. Increased bleeding during or after surgery is one concern,but of greater significance is the possibility of an increasedpredisposition to haematoma formation when regional block isused. Most of the recent consideration of this problem has beenin relation to vertebral canal haematoma formation after centralnerve block. Some thought must be given also to the possibilityof haematoma formation after peripheral techniques when thetarget nerve is deeply placed so that pressure cannot be usedto control bleeding after needle insertion. However, this reviewwill be focused on vertebral canal haematoma. 相似文献
63.
OBJECTIVE: To determine the extent of intercycle and interobserver variability in antral follicle (AF) count and their impact on stimulation quality in IVF. DESIGN: Prospective evaluation of the impact on AF count of GnRH agonist down-regulation and interobserver variability. Retrospective evaluation of intercycle variability in AF count. SETTING: University ART clinic. PATIENT(S): Twenty subjects were used to evaluate the effect of GnRH agonist down-regulation upon AF count; six of whom were used to evaluate interobserver variability. Fifty patients experiencing two or three cycles of IVF within a 1-year interval. INTERVENTION(S): Transvaginal ultrasound exams before and after down-regulation with a GnRH agonist. Videotaped day-3 transvaginal ultrasound exams. MAIN OUTCOME MEASURE(S): [1] Intercycle and interobserver variability in antral follicle count. [2] Oocytes retrieved, peak estradiol, gonadotropin dose, duration of stimulation and cancellation rates. RESULT(S): There is moderate intercycle and interobserver variability in AF counts. GnRH agonist down-regulation does not significantly change AF count. In infertility patients undergoing IVF, paired analysis between the low- and high-AF count cycles did not show a difference in quality of stimulation or cycle cancellation rates. CONCLUSIONS: Within an individual patient, higher AF count in a given cycle was not predictive of better stimulation compared with the case of a lower count cycle. 相似文献
64.
Den Tonkelaar I Broekmans FJ De Boer EJ Te Velde ER Soules MR Parrott E Rebar R Santoro N Sherman S Utian W Woods NF 《Menopause (New York, N.Y.)》2002,9(6):463-4; author reply 464-5
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M R Soules L R Makinak R Bury A Poindexter 《American journal of obstetrics and gynecology》1976,125(3):412-417
Over an 8 year period, 350 cases of endometriosis (77 per cent confirmed histologically) from the Department of Obstetrics and Gynecology, Baylor College of Medicine, were reviewed. Of these cases, 58 (17 per cent) exhibited significant anovulation as measured by a scoring system. Endometriosis and anovulation can coexist contrary to classic concepts of these diseases. Both infertility factors required treatment to achieve pregnancy. A 43 per cent pregnancy rate reflects the dual infertility problem. 相似文献
67.
Prevalence of risk factors for cardiovascular disease in Canadians 55 to 74 years of age: results from the Canadian Heart Health Surveys, 1986-1992 总被引:1,自引:1,他引:0 下载免费PDF全文
DB Langille MR Joffres KM MacPherson P Andreou SA Kirkland DR MacLean 《Canadian Medical Association journal》1999,161(8):S3-S9
BACKGROUND: By 2016, the proportion of Canadians older than 65 years of age will increase to 16%, and there will be an increase in the absolute number of cases of cardiovascular disease in older Canadians. The Canadian Heart Health Surveys database provides information about this population upon which health policy related to cardiovascular disease can be based. This paper presents for the first time population-based data on the risk factors for cardiovascular disease in older Canadians. METHODS: Canadians from all 10 provinces participated in surveys of cardiovascular risk factors; health insurance registries were used as sampling frames. In each province, probability samples of 2200 adults 18 to 74 years old not living in institutions, on reserves or in military camps were asked to participate in interviews and to undergo testing at clinics for major risk factors for cardiovascular disease. RESULTS: A total of 2739 men (response rate 70%) and 2617 women (response rate 66%) aged 55 to 74 years participated in the survey and also provided follow-up clinical measurements at the clinic. Overall, 52% of participants were hypertensive, 26% had isolated systolic hypertension, and 30% had a total blood cholesterol level of 6.2 mmol/L or greater. Rates of current smoking were lower in women than men (17% v. 22%). Overall, 87% of men and 78% of women who were current smokers smoked at least 10 cigarettes per day. Only slightly more than half of participants exercised at least once a week for at least 15 minutes, and almost half had a body mass index of 27 or greater. In only 4% was no major risk factor for cardiovascular disease detected. INTERPRETATION: Significant numbers of older Canadians have one or more major risk factors for cardiovascular disease. Many of these risk factors are amenable to modification. 相似文献
68.
口服Carvedilol治疗心力衰竭多中心研究(MOCHA) 总被引:1,自引:0,他引:1
标题 Carvedilol对慢性心力衰竭患者左心室功能的改善和存活的提高呈剂量相关性作者 BristowMR,GilbertEM,AbrahamWT,等 Circulation1996,94:2807~2816 研究疾病:充血性心力衰竭。目的:对Carvedilol治疗慢性心力衰竭患者剂量-疗效特征进行评价。 设计:随机、双盲、安慰剂对照的多中心研究,剂量效应关系研究。病人资料:共345名心力衰竭患者,年龄18~85岁,左室射血分数≤0-35,心力衰竭症状时间≥3月,研究前所有患者必须用利… 相似文献
69.
Volumetric rendering of MR images 总被引:1,自引:0,他引:1
The authors developed new techniques for three-dimensional display of magnetic resonance (MR) images that preserve soft-tissue definition, are fully automatic, and work with routinely used section thicknesses. MR images are segmented, selectively enhanced, and displayed by means of a volumetric rendering algorithm. These techniques were used to illustrate normal anatomy of the brain, knee, and liver. Three-dimensional rendering of balanced spin-echo images shows the ventricles and extracerebral veins and of T1-weighted images, the sulci and gyri. The large hepatic and portal vessels can be seen with these enhancement techniques. Three-dimensional views of the knee reveal articular surfaces of the tibia and clearly depict menisci and posterior and anterior cruciate ligaments. These techniques make it possible to image multiple soft tissues simultaneously while preserving the detail contained in the original images. Three-dimensional presentation of complex, overlapping anatomic regions is helpful in surgical planning and should lead to improved diagnosis. 相似文献