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Comparison of ultrasonographic findings in spontaneous abortions with normal and abnormal karyotypes 总被引:2,自引:2,他引:2
To determine whether ultrasonographic findings can predict the karyotype of
spontaneous abortions, 137 pregnancies (54 spontaneous, 83 assisted
ovulatory cycles) that subsequently aborted and had chromosome analysis
performed on the products of conception were studied ultrasonographically.
Transvaginal ultrasound was performed using an Acuson 128XP/10 with 7.5 MHz
probe. The numbers of empty gestational sacs, small and normal for
gestational size, embryonic poles and embryos with documented cardiac
activity were calculated. The frequency of each of these findings in
pregnancies with normal and abnormal karyotypes was compared. Of the 137
spontaneous abortions, 51 had normal chromosome analyses and 86 had
abnormal karyotypes (68 aneuploidies and 18 polyploidies). Ultrasonographic
findings in the 51 karyotypically normal pregnancies included 16 (31%) with
empty gestational sacs, and 35 (69%) with embryonic poles, of which 24
(69%) were at least 1 week smaller than expected for gestational age and 11
(31%) were the expected size. Embryonic cardiac activity was documented in
22 (63%) of the 35 embryonic poles. Amongst 86 pregnancies with abnormal
karyotypes, similar frequencies of ultrasound findings were found: 23 (27%)
with empty gestational sacs, 42 (67%) with embryonic poles smaller than
expected for gestational age, and 50 (79%) embryos lost after documentation
of embryonic cardiac activity. No differences in the frequency of
ultrasonographic findings of empty gestational sacs, small embryonic pole
and embryonic cardiac activity were observed between karyotypically normal
and abnormal spontaneous abortions. Ultrasonographic findings cannot
predict the karyotype of spontaneous abortions.
相似文献
6.
Gonadotrophin-releasing hormone agonist dose-dependency of pituitary desensitization during controlled ovarian hyperstimulation in IVF 总被引:2,自引:2,他引:2
Janssens RM; Vermeiden JP; Lambalk CB; Schats R; Schoemaker J 《Human reproduction (Oxford, England)》1998,13(9):2386-2391
The aim of this study was to find the minimal effective daily s.c. dose of
the gonadotrophin-releasing hormone (GnRH) agonist, triptorelin acetate,
that suppresses the GnRH-induced release of luteinizing hormone (LH) at
time of human chorionic gonadotrophin (HCG) injection and thereby prevents
spontaneous LH surges during in-vitro fertilization (IVF) stimulation
cycles. Therefore, a double-blind, prospective and randomized titration
study was performed. A total of 48 IVF patients were divided into four
groups of 12 patients. Each group received a different dose of triptorelin
acetate, namely 5, 15, 50 or 100 microg s.c. daily. Standard ovarian
stimulation was carried out using urinary follicle stimulating hormone
(FSH) preparations. A 500 microg GnRH test was performed 90 min before the
HCG injection in order to measure the degree of pituitary desensitization.
Spontaneous LH surges were not detected in any of the groups, although
three patients in the 5 microg group had ovulated at the time of ovum
retrieval. The pituitary LH response to the GnRH test at time of HCG,
expressed as area under the curve (AUC), appeared to be dose-dependent.
Thus, a daily s.c. dose of 100 microg triptorelin acetate appears to be too
high, since adequate desensitization of the pituitary (i.e. no spontaneous
LH surge) can be achieved with doses as low as 15 and 50 microg.
相似文献
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Yuanyuan Wu Kathryn CB Tan Sammy WM Shiu Yishan Luo Lin Shi Timothy CY Kwok 《Journal of diabetes investigation.》2022,13(11):1873
Aims/IntroductionTo examine the association between cholesterol efflux capacity (CEC) of serum high‐density lipoprotein (HDL) and cognitive function and brain structures in older people with diabetes mellitus.Materials and MethodsParticipants of a randomized placebo‐controlled trial of 27‐month vitamin B12 supplementation in older people with diabetes mellitus, which showed no effect on cognition, were further followed up at month 72. Cognitive tests included the Clinical Dementia Rating scale, Neuropsychological Test Battery in memory, executive function and psychomotor speed. Brain magnetic resonance imaging scans were carried out in a subset at baseline, month 27 and month 45. Fasting serum at baseline, month 9, month 27 and month 72 were analyzed for adenosine triphosphate‐binding cassette transporter A1‐mediated CEC of HDL and apolipoprotein A1 (ApoA1).ResultsSerum HDL cholesterol at baseline was associated with better executive and memory function at follow up. Serum ApoA1 was associated with a better memory Z‐score at month 18. Serum CEC and ApoA1 were not associated with Clinical Dementia Rating scale, Neuropsychological Test Battery, hippocampal volume and white matter disease on magnetic resonance imaging at baseline and whole brain atrophy rates. They were also not associated with cognitive function at month 27 and 72 on multilevel modeling. CEC and ApoA1 decreased significantly from baseline to month 27. Faster decliners in CEC had a greater increase in brain peak width of skeletonized mean diffusivity.ConclusionsHigher serum HDL cholesterol was associated with more favorable changes in memory and executive function in older people with diabetes mellitus. However, this was not due to CEC or ApoA1. A decline in CEC was associated with small vessel disease in the brain. 相似文献
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目的:观察急性髓性白血病经混合造血干细胞移植后,应用供者淋巴细胞输注 白细胞介素2治疗的效果,并与移植后未经特殊治疗的效果进行比较。方法:①选取2000-01/2004-07解放军兰州军区兰州总医院全军血液病中心收治的19例急性髓性白血病患者,实验经医院伦理委员会批准,患者均知情同意。随机数字表法分为两组:观察组8例,年龄17~40岁,M2a 4例,M4 1例,M5a 3例;对照组11例,年龄19~39岁,M2a 2例,M3a 2例,M4 3例,M5a 4例。②两组患者采用化疗联合重组人粒细胞集落刺激因子的方法动员自体外周血造血干细胞,采集后液氮中保存5d备用。③术前采用直线加速器对患者全身及肺部照射,预处理完毕后实施混合造血干细胞移植。首先回输自体单个核细胞中位数为4×108/kg,CD34 细胞中位数为6.2×106/kg,粒-巨噬祖细胞集落形成单位中位数为5.8×104/kg。间隔1~6h后,采集人类白细胞抗原半相合异体骨髓,按回输自体单个核细胞数的1/6~1/10输注给患者。④两组患者移植期间均住无菌层流病房,给予相应并发症的防治及支持治疗。在粒细胞降至0时注射重组人粒细胞集落刺激因子150μg/12h,促进造血恢复。观察组给予供者淋巴细胞输注 白细胞介素2治疗,每次采集的供者淋巴细胞中,CD3 淋巴细胞中位数为1.43×108/kg,CD4 细胞中位数为0.97×108/kg,CD8 细胞中位数为0.41×108/kg,中位治疗次数4(1~7)次,回输后即开始应用100wu/d重组人白细胞介素2,共10d。对照组混合造血干细胞移植后未给予特殊治疗。结果:19例急性髓性白血病患者均进入结果分析。①造血恢复:两组患者均获得造血重建,术后4~9d粒细胞均降至0,12~17d粒细胞达0.5×109L-1,16~21d白细胞达4.0×108 L-1,19~23 d血小板达20×108 L-1。16~21 d骨髓检查示恢复期骨髓象。②术后并发症:两组患者不同程度地出现口腔溃疡,随着造血恢复,7~10d溃疡消失。观察组1例患者出现出血性膀胱炎,两组各2例患者出现发热。无肝静脉闭塞病和移植物抗宿主病发生。③嵌合体形成:观察组中1例M4患者形成嵌合体,对照组中2例M4患者与1例M5患者形成嵌合体,嵌合体持续存在3~12个月。④供者淋巴细胞输注 白细胞介素2疗效:观察组中有1例M2a患者在接受2次特殊治疗后7个月复发死亡;1例M2a患者接受2次特殊治疗后1年出现骨髓增生异常综合征,脑出血死亡,1例M5a患者应用特殊治疗1次后出现不明原因高热、抽搐,死于癫痫持续状态,其余5例患者随访2年均健康存活,长期生存率为62.5%(5/8)。对照组有2例M2a患者、2例M4患者、1例M5患者于移植后1~7个月复发死亡,1例M3患者于移植后25d死于脑出血,其余2例M3患者、2例M4患者、1例M5患者随访2年均健康存活,长期生存率为45.4%(5/11)。结论:混合造血干细胞移植后应用供者淋巴细胞输注 白细胞介素2治疗,急性髓性白血病患者均获得造血重建且无移植物抗宿主病发生,其长期生存率有效提高。 相似文献
10.
CB. Laurell 《Scandinavian journal of clinical and laboratory investigation》2013,73(2):118-121
Observations made in an investigation of the diurnal variation of the serum iron concentration suggested that the diurnal variations of serum iron can be explained as a phenomenon secondary to the diurnal variation of the hemoglobin metabolism. This hypothesis is supported by parallel changes in the bilirubin and serum iron values. 相似文献