[Spatial point pattern analysis of main trees and flowering Fargesia qinlingensis in Abies fargesii forests in Mt Taibai of the Qinling Mountains, China].

In Abies fargesii forests of the giant panda's habitats in Mt. Taibai, the spatial distribution patterns and interspecific associations of main tree species and their spatial associations with the understory flowering Fargesia qinlingensis were analyzed at multiple scales by univariate and bivaria-te O-ring function in point pattern analysis. The results showed that in the A.

[Clinical application of gonadotropin-releasing hormone antagonist in Chinese women undergoing controlled ovarian hyperstimulation for in vitro fertilization and embryo transfer].

Objective: To analyze the clinical characteristics and cycle outcome of Chinese women with gonadotropin-releasing hormone (GnRH) antagonist treatment during controlled ovarian hyperstimulation (COH) for in vitro fertilization and embryo transfer (IVF-ET).

Methods: A retrospective review was conducted in patients who completed 54 consecutive cycles of IVF-ET with GnRH antagonist treatment for luteinizing hormone (LH) surge prevention. Descriptive statistics were recorded for the patients' age, GnRH treatment duration (days) and dose, timing and duration of GnRH antagonist treatment, serum E2 and LH level on the day of antagonist use and hCG injection, number of oocytes retrieved, and clinical pregnancy rate.

[Neonatal outcomes of pregnancy resulting from in vitro fertilization and embryo transfer: analysis of 1274 cases].

Objective: To evaluate the neonatal outcomes of pregnancies resulting from in vitro fertilization and embryo transfer (IVF-ET) in relation to the occurrence of congenital malformations of the neonates.

Methods: A total of 1274 infants born after IVF-ET were reviewed. The neonatal outcome was evaluated based on gestational weeks, body weight, congenital malformations, manner of spermatization, maternal age and multiple gestation.

[Comparison of clinical outcomes of four protocols for frozen-thawed embryo transfer cycle].

Objective: To compare the clinical outcome of 4 protocols of frozen-thawed embryo transfer cycle to select the optimal endometrial preparation method for frozen-thawed embryos transfer.

Methods: A retrospective analysis of the 4 clinical protocols was conducted including natural cycle, down-regulated hormone replacement treatment (HRT) cycle, hMG cycle and natural cycle+hCG in endometrial preparation for 419 frozen-thawed embryos transfer cycle, and the clinical pregnancy rate, implantation rate, early abortion rate, ectopic pregnancy rate , ongoing pregnancy rate and delivery rate were compared between the 4 protocols.

Results: There was no significant difference between the 4 groups with different clinical protocols in age, duration of infertility, reason of infertility, number of embryo transferred and endometrial thickness.

[Combined use of methotrexate and mifepristone for ectopic pregnancy management: a meta- analysis].

Objective: To evaluate the clinical effect and safety of combined use of methotrexate and mifepristone for treatment of ectopic pregnancy.

Methods: By searching in the major databases of CNKI, CBMdisk and Pubmed according to the criteria of evidence-based medicine, we collected data of randomized controlled trials pertaining to combined use of methotrexate and mifepristone in the treatment of ectopic pregnancy.

Results: Twenty-three randomized controlled trials involving totally 1 706 patients were collected according to the inclusion criteria, and meta-analysis of the data indicated that combined use of methotrexate and mifepristone can be of great value in the management of ectopic pregnancy in comparison with exclusive use of methotrexate [ combined odds ratio (OR) was 2.