Acta geneticae medicae et gemellologiae最新文献_第5页

Factors associated with neonatal hypoglycemia in premature twins and singletons. 早产双胞胎和单胎新生儿低血糖的相关因素。

Acta geneticae medicae et gemellologiae Pub Date : 1997-01-01 DOI: 10.1017/s0001566000000763

V Zanardo, S Cagdas, F Marzari

{"title":"Factors associated with neonatal hypoglycemia in premature twins and singletons.","authors":"V Zanardo, S Cagdas, F Marzari","doi":"10.1017/s0001566000000763","DOIUrl":"https://doi.org/10.1017/s0001566000000763","url":null,"abstract":"Twin gestation is associated with higher rate of neonatal hypoglycemia than do singletons. We examined the role of specific risk factors associated with neonatal hypoglycemia of 216 premature twins and 1284 premature singletons, consecutively born in the years 1994-1996 in the Department of Pediatrics of Padua University, Italy. Significantly higher risk of hypoglycemia (Dextrostix < 40 and < 20 mg%) was found in twins vs singletons (54% vs 32%, OR 2.49, CI 1.77-3.56; 19% vs 8%, OR 2.65, CI 1.59-4.19, respectively). Gestational age of 34-37 weeks increased hypoglycemia risk for the premature twins (77% vs 51%, OR 3.20 CI 1.49-6.88). Twin deliveries statistically differed from those of singletons in several perinatal characteristics. More twins were born by cesarean section (85% vs 55%, OR 4.15, CI 2.48-6.95), and the birth weight of twins was much lower related to prematures with BW < 1.0 kg (12% vs 6%, OR 2.06, CI 1.11-3.82) and SGA (20% vs 10%, OR 2.41, CI 1.46-3.98). The risk of twin deliveries was increased at 30-33 weeks gestational age (25% vs 15%, OR 1.84; CI 1.17-2.90). Twins were found to have higher rates of hospitalization (50% vs 40%, OR 1.52, CI 1.04-2.23) and showed an increased risk of cardiorespiratory resuscitation (51% vs 31%, OR 2.36, CI 1.61-3.47), hypothermia (11% vs 4%, OR 3.02, CI 2.33-3.91), BPD (25% vs 19%, OR 2.55, CI 1.10-5.91), and PVL (4% vs 1%, OR 4.08, CI 1.23-13.5). Mortality was found more often (not significant) in premature twins. The risk for intrapartum and early neonatal morbidity was however, mostly reduced in hypoglycemic twins, while it was comparable between smaller or smaller weight discordant twins and larger twins. Similarly, SGA twins, and smaller or smaller weight-discordant twins did not show increased hypoglycemia risk. In conclusion, our findings suggest that the multiple gestation per se is the single most important relative risk factor of hypoglycemia in premature twins.","PeriodicalId":7118,"journal":{"name":"Acta geneticae medicae et gemellologiae","volume":"46 1","pages":"69-77"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1017/s0001566000000763","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20237620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Are differences between twins a result of mutual rivalry? 双胞胎之间的差异是相互竞争的结果吗?

Acta geneticae medicae et gemellologiae Pub Date : 1997-01-01 DOI: 10.1017/s0001566000000726

J G Borg

{"title":"Are differences between twins a result of mutual rivalry?","authors":"J G Borg","doi":"10.1017/s0001566000000726","DOIUrl":"https://doi.org/10.1017/s0001566000000726","url":null,"abstract":"The sexual index included in the Szondi test makes it possible to define the domains of an individual's \"internal sex\" or gender-especially the degree of the subject's bisexuality. This index was employed in a comparison between partners reared together in 62 monozygotic and 23 dizygotic pairs of twins. The observed incongruence in 1/3 MZ pairs would not appear to derive totally from errors of measurement. In most of these pairs it is competition which underlies the incongruence seen on the sexual index. It was further observed that the congruence here as in general in female pairs is clearly more marked than in males. A hypothesis was proposed, whereby competition for dominance is a distinctively major-tonality (masculinity) characteristic. The incongruence is more conspicuous among males because males are in general more markedly major-toned than females. This hypothesis was borne out. It is thus necessary here as in general to adopt two sex variables in parallel: external (i.e. matricular) sex and internal sex (gender). It is due to the presence of these competitive pairs that the means and especially deviations of twins' test results will consistently diverge from those in the population at large.","PeriodicalId":7118,"journal":{"name":"Acta geneticae medicae et gemellologiae","volume":"46 1","pages":"23-36"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1017/s0001566000000726","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20239671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

[A brief history of twin study methods]. [双胞胎研究方法简史]。

Acta geneticae medicae et gemellologiae Pub Date : 1997-01-01

F Lorenzi

引用次数: 0

Perinatal morbidity and mortality rates in twin pregnancies--a 15-year review study from Athens. 双胎妊娠的围产期发病率和死亡率——一项来自雅典的15年回顾研究。

Acta geneticae medicae et gemellologiae Pub Date : 1997-01-01 DOI: 10.1017/s0001566000000416

A E Liapis, D K Hassiakos, P P Panagopoulos

{"title":"Perinatal morbidity and mortality rates in twin pregnancies--a 15-year review study from Athens.","authors":"A E Liapis, D K Hassiakos, P P Panagopoulos","doi":"10.1017/s0001566000000416","DOIUrl":"https://doi.org/10.1017/s0001566000000416","url":null,"abstract":"There were 150 deliveries of twin pregnancies over 26 weeks in our hospital. The incidence of twin pregnancies was 1.0% in a population consisting of Greek nationals. Seventy five (50%) were term at delivery whereas 75 (50%) were premature (mean gestational age at delivery 36.5 weeks). The birth weight at delivery ranged from 350 grs to 4,050 grs with mean birth weight for the 1st and 2nd twin of 2,404 grs and 2,384 grs, respectively. One hundred and forty four (48%) neonates had weights between 1,501 to 2,500 grs. Twenty two (9.57%) neonates had weights between 1,501 grs to 2,500 grs. The perinatal mortality when birth weights exceeded 1,500 grs was 7.32%. In total, 186 (62%) newborns were delivered vaginally and 114 (38%) by cesarean section. Forceps were used in 4.33% of the cases and breech extraction was performed in 2.33%. The mode of delivery and perinatal mortality rates were not correlated for both twins (p > 0.05). The most common causes of death were hyaline membrane disease (48.5%), immaturity (18.2%), congenital abnormalities (15.1%), septicemia (12.1%) and asphyxia (6.06%). Prematurity seems to constitute the most common cause of perinatal deaths while the mode of delivery found to be irrelevant to perinatal mortality.","PeriodicalId":7118,"journal":{"name":"Acta geneticae medicae et gemellologiae","volume":"46 4","pages":"185-91"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1017/s0001566000000416","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20769507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 15

The twinning rates by zygosity in Japan, 1975-1994. 1975-1994年日本的合子率。

Acta geneticae medicae et gemellologiae Pub Date : 1997-01-01 DOI: 10.1017/s0001566000000714

Y Imaizumi, K Nonaka

{"title":"The twinning rates by zygosity in Japan, 1975-1994.","authors":"Y Imaizumi, K Nonaka","doi":"10.1017/s0001566000000714","DOIUrl":"https://doi.org/10.1017/s0001566000000714","url":null,"abstract":"The monozygotic (MZ) twinning rate in Japan had remained nearly constant from 1975 (3.74 per 1,000 births) to 1994 (4.23), whereas the dizygotic (DZ) twinning rate had remained nearly constant from 1975 (1.86) to 1986 (2.27), and had gradually increased up to 1994 (3.89). The higher DZ twinning rate since 1987 has been attributed to the higher proportion of mothers treated with ovulation-inducing hormones and partially attributed to in-vitro fertilisation in Japan. As for maternal age, MZ twinning rates have remained nearly constant for maternal age groups except the youngest and the oldest age groups. On the other hand, DZ twinning rates increased up to the 35-39 years of age group and decrease thereafter. In 1994, the twinning rate was higher in DZ twins than in MZ twins for maternal age groups of 30-34 years and of 35-39 years. As for geographical variations in twinning rates, DZ rates statistically significantly increased with the year during the period from 1986 to 1994 in 31 out of 47 prefectures. In 1994, twinning rates in 21 out of 47 prefectures were higher in the DZ than the MZ rate, and the DZ rate is equal to the MZ rate in two prefectures. Geographical variations in twinning rates by zygosity in 1994 drastically changed from those during the period from 1955-1959 and in 1974.","PeriodicalId":7118,"journal":{"name":"Acta geneticae medicae et gemellologiae","volume":"46 1","pages":"9-22"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1017/s0001566000000714","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20239670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 67

The twinning rates and epidemiological characteristics of births in southeast Uttar Pradesh, India. 印度北方邦东南部出生的双胞胎率和流行病学特征。

Acta geneticae medicae et gemellologiae Pub Date : 1997-01-01 DOI: 10.1017/s000156600000074x

K Sharma

{"title":"The twinning rates and epidemiological characteristics of births in southeast Uttar Pradesh, India.","authors":"K Sharma","doi":"10.1017/s000156600000074x","DOIUrl":"https://doi.org/10.1017/s000156600000074x","url":null,"abstract":"Birth statistics over a period of 5 years were analyzed to study epidemiological characteristics of twinning in Southeast Uttar Pradesh, India. The data revealed higher incidence of breech twins (11.84% of all cotwins) as compared to breech single births (2.18%). But the perinatal mortality and caesarean section rates were similar in both twin and singleton pregnancies. The cumulative twinning rate over the studied period was 11.70 per 1000 live births. The MZ and DZ twinning rates were estimated respectively as 3.67 and 8.03 per mill. The mean maternal age of sampled mothers was 26.42 years with one standard deviation of 5.30 years. The twinning rate for mothers over 35 years of age was about four times higher than that in mothers younger than 20 years. Incidentally, the twinning rate was the highest at parity four and a non-linear curve could more appropriately be fitted to the series of data. Seasonal variations were observed for both twin and singleton births. The highest frequency of births was observed from August through October. But seasonal index for twinning rate showed a clear bimodal distribution with peaks in April (223) and September (167).","PeriodicalId":7118,"journal":{"name":"Acta geneticae medicae et gemellologiae","volume":"46 1","pages":"47-56"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1017/s000156600000074x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20239673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

The sonographic prenatal diagnosis of congenital defects of the anterior abdominal wall based on our own study of twin pregnancies--gastroschisis. 基于双胎妊娠胃裂先天性腹壁缺陷的超声产前诊断。

Acta geneticae medicae et gemellologiae Pub Date : 1997-01-01 DOI: 10.1017/s0001566000000659

W Malinowski, I Biskup

引用次数: 2

Very early and simple determination of chorionic and amniotic type in twin gestations by high-frequency transvaginal ultrasonography. 高频经阴道超声非常早期和简单的确定绒毛膜和羊膜类型在双胎妊娠。

Acta geneticae medicae et gemellologiae Pub Date : 1997-01-01 DOI: 10.1017/s0001566000000581

W Malinowski

{"title":"Very early and simple determination of chorionic and amniotic type in twin gestations by high-frequency transvaginal ultrasonography.","authors":"W Malinowski","doi":"10.1017/s0001566000000581","DOIUrl":"https://doi.org/10.1017/s0001566000000581","url":null,"abstract":"Objective: The aim was to determine the chorionic and amniotic types in multifetal pregnancies with transvaginal ultrasonography at very early stage of gestation.Study design: Twenty-one spontaneous multifetal pregnancies were scanned transvaginally before 8 weeks' gestation (four of them from 4th week). The chorionic and amniotic type was determined ultrasonographically. All twin gestations had postpartum pathologic evaluation of the placenta and histologic determination of the chorionic and amniotic type.Results: Ultrasonographic evaluation of the 21 pregnancies demonstrated 20 twin and 1 triplet gestation. Four of the twin pregnancies were monochorionic-diamniotic. Triplet was monochorionic-triamniotic (spontaneously aborted in 8th week of gestation). In all 20 twin pregnancies, transvaginal ultrasonography correctly predicted the chorionic and amniotic type before 8 weeks of gestation.Conclusion: Transvaginal ultrasonography allows a reliable, simple and rapid determination; the dichorionic twin pregnancy in 4 weeks, monochorionic in 5 weeks, and differentiation of mono- or diamniotic in 7 weeks of gestation.","PeriodicalId":7118,"journal":{"name":"Acta geneticae medicae et gemellologiae","volume":"46 3","pages":"167-73"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1017/s0001566000000581","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20563069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

[Establishment of the Mendel Institute]. [孟德尔研究所的建立]。

Acta geneticae medicae et gemellologiae Pub Date : 1997-01-01

L Gedda

引用次数: 0

The challenges of expecting, delivering and rearing triplets. 期待、分娩和抚养三胞胎的挑战。

Acta geneticae medicae et gemellologiae Pub Date : 1997-01-01 DOI: 10.1017/s0001566000000623

B A Akerman, M Hovmöller, P A Thomassen

引用次数: 20