Breech presentation and tossing a coin: Heads or tails

Sekulić, Slobodan; Vuleta, P; Vuleta, Dušan

doi:10.1016/s0306-9877(02)00362-6

Cited by 6 publications

(23 citation statements)

References 62 publications

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“…These data are related to either single series or collections of series dealing with the incidence of breech presentation in medical conditions and diseases, data obtained from repeated observations under the same conditions, as well as series of two concomitant medical conditions. Studies of more than 50 known diseases and medical conditions with the incidence of breech presentation higher than that occurs in the general population revealed that the probability of breech presentation is around 50% or less (Table I) [10,11,12]. This is also related to studies of intergeneration recurrence [13], and the probability of breech presentation after previous breech deliveries [14].…”

Section: Probability Of Breech Presentationmentioning

confidence: 89%

“…the correlation between the clinical characteristics and the incidence of breech presentation is the most noticeable in cases of congenital uterine malformations. The incidence of breech presentation in women with these malformations may be as high as 50% [10], cephalic version is not possible to perform [15], and fetuses are born with postural deformities [16]. In multiparas with congenital uterine malformations, there is no difference in the probability of breech presentation between the first and second delivery, indicating that it is an independent event [10].…”

Section: Probability Of Breech Presentationmentioning

confidence: 99%

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Probability of breech presentation and its significance

Sekulić

Mikov

Petrovic

2010

The Journal of Maternal-Fetal & Neonatal Medicine

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Existing data related to the probability of breech presentation suggest that the breech presentation is a consequence of mere filling of the intrauterine space, with the same probability of breech and cephalic presentation. As a consequence, group of cephalic presenting fetuses is heterogeneous. Some fetuses randomly assume the cephalic presentation while others assume cephalic presentation 'intentionally' for a reason. Before comparing breech and cephalic presenting fetuses/newborns, bias should be eliminated by subtracting from the cephalic-presenting group the number of fetuses/newborns that is identical with the number of breech-presenting fetuses/newborns with identical characteristics. The subtracted group should be added to the breech-presenting group before comparison with the remaining cephalic-presenting fetuses/newborns. The comparison should be corrected for the gestational age and according to data that are not influenced by delivery. Data suggest that the physiological process that accounts for 92% of cephalic-presenting human fetuses at delivery should be sought from the 25th gestational week onwards.

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Section: Probability Of Breech Presentationmentioning

confidence: 89%

Section: Probability Of Breech Presentationmentioning

confidence: 99%

Probability of breech presentation and its significance

Sekulić

Mikov

Petrovic

2010

The Journal of Maternal-Fetal & Neonatal Medicine

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“…In addition, there is no medical entity in human medicine in which the probability is higher than 50% in favour of breech presentation. It is always between 0% and 50% (Sekulić et al 2003).…”

Section: Introductionmentioning

confidence: 99%

The probability for anterior and posterior presentation during the second half of gestation and at delivery among albino mice

Sekulić¹,

Lalošević

Naumovic

et al. 2007

Biologia

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The aim of this research is to determine the probability of anterior and posterior presentation during the second half of gestation and at delivery among albino mice. Each day from the 10 th to the 21 st day of gestation, foetal presentation and lie were determined in uteri of six pregnant females. The chi-square test did not show any statistically significant difference in the incidence of anterior and posterior presentation between the right and left horn. In addition, there was no significant difference between anterior and posterior presentation in relation to the site in the horn or in relation to gestation days. At delivery, there was no significant difference in the incidence of anterior and posterior presentation (29 versus 31 cases). The results show that, in the albino mouse, foetal presentation during the second half of gestation and at birth is accidental, with equal probability for anterior and posterior presentation.

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“…Several studies published so far have established that no medical entity has more than a 50% probability of breech presentation (Albrechtsen et al, 1998;Braun et al, 1975;Sekulić et al, 2003). However, these studies only tested the probabilities of breech presentation for various single medical entities.…”

mentioning

confidence: 99%

“…The incidence of breech presentation at birth is around 3% in the general population. Among twins the incidence of breech presentation at delivery is between 20% and 40% (Sekulić et al, 2003). Up to 53% of singleton gestations in a uterus with two bodies are followed by malpresentation at delivery (Acién, 1993).…”

mentioning

confidence: 99%

Does a Probability of Breech Presentation of More Than 50% Exist Among Diseases and Medical Conditions?

et al. 2007

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The aim was to study the effect of twin gestations in a uterus with 2 bodies on the probability of breech presentation at delivery. The hypothesis was that the probability of breech presentation was not higher than 50%. A review was undertaken of MEDLINE (1966–2004) and of the article reference list for statistical analysis of presentation at delivery among twins in a normal uterus, singleton gestations in a uterus with 2 bodies, and case studies of twins in a uterus with 2 bodies. There are 10 studies of twin gestations in a normal uterus (Twin A 3036 cases, breech presentation 22.36%; Twin B 2758 cases, breech presentation 36.87%), 2 studies of singleton gestations in a uterus with 2 bodies (297 cases, breech presentation 42.09%), and 57 case report studies of twin gestations in a uterus with 2 bodies (Twin A 56 cases, breech presentation 14.29%; Twin B 54 cases, breech presentation 18.52%). The odds ratio and chi-square test for differences in probabilities show a significantly lower incidence of breech presentation for twins in a uterus with 2 bodies compared with twins in a normal uterus (Twin A, odds ratio = 0.58; χ2 = 2.08, p > .05, Twin B, odds ratio = 0.39, χ2 = 7.67, p < .05), and singleton gestations in a uterus with 2 bodies (Twin A, odds ratio = 0.23, χ2 = 15.51, p < .05; Twin B, odds ratio = 0.31, χ2 = 10.72, p < .05). Twin gestations in a uterus with 2 bodies decrease the probability of breech presentation.

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Breech presentation and tossing a coin: Heads or tails

Cited by 6 publications

References 62 publications

Probability of breech presentation and its significance

Probability of breech presentation and its significance

The probability for anterior and posterior presentation during the second half of gestation and at delivery among albino mice

Does a Probability of Breech Presentation of More Than 50% Exist Among Diseases and Medical Conditions?

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