The tragedy of maternal mortality remains a scourge that strikes hard on our developing countries, particularly Africa, where socio-economic, environmental and health conditions are very precarious, exposing women to the daunting complications of pregnancy and childbirth . According to the most recent figures from the World Health Organization, 529,000 women die each year from maternal causes and about 50 million women are victims of complications related to pregnancy and childbirth . So thousands of women around the world are living the birth of a child not as the happy event that it should be, but as a test that can even cost them life . In Cameroon, deliveries among adolescents represented 26.56% of 12,537 deliveries at the maternity hospital of the provincial hospital of Maroua: 7.87% of deliveries were observed among adolescents 16 years and under and 18.95% among those from 17 to 19 years old . In South Africa, authors have found that one in four women in childbirth is under the age of 20 . In the DRC, EDS RDC 2014 found that more than a quarter of adolescent girls (27%) had already started their fertile life, 21% had had at least one child and 6% were pregnant with a first child. Compared to the first DHS in the DRC, the proportion of adolescent girls who started their fertile life increased slightly, from 24% in 2007 to 27% in 2013-2014. This proportion is much higher in rural areas (32%) than in urban areas (20%) . These pregnancies present increased risks for the health of the mother and the child, it acts of an increased risk of health problems such as anemia, high blood pressure, eclampsia and depressive disorders in the mother . In the People’s Republic of Benin, an author finds a high rate of 5.03% of toxemia, prematurity, and fetal-pelvic disproportion in primiparas aged sixteen and under . In Côte d’Ivoire, a study on the outcome of pregnancy in adolescents aged 12 to 16 found a high rate of 5.5% of pre-eclampsia, prematurity, fetal hypotrophy and cesarean section  . At the CHU of Yaoundé, it appears that the occurrence of a first childbirth during adolescence was associated with a high risk of prematurity, torn perineum, fetal distress, use of episiotomy, use of oxytocin, cesarean delivery and birth . In developing countries in particular, morbidity and mortality are an immense tragedy that has long been ignored by policymakers. The African continent is the most affected or the risk is sometimes 100 times higher than in the industrialized countries. The maternal mortality rate ranges from 830 per 100,000 live births in African countries to 24 per 100,000 live births in European countries . In summary, studies of these adolescent girls have shown particularly in young people under the age of 19 a very high risk of cesarean delivery and stillbirth. This can be attributed not only to the gynecological immaturity but also to the anatomical conditions linked to the pelvis determining a greater occurrence of cephalopelvic disproportion.
The overall objective of this study is to contribute to the improvement of knowledge about the factors associated with cesarean section among young women in the Northeast of Upper Katanga.
2. Topics and Methods
Sites and study population
A cross-sectional descriptive study was carried out in northeastern Upper Katanga in the Democratic Republic of Congo (DRC) in 3 health zones of Kilwa, Kasenga and Kashobwe. The study was conducted from February to August 2017 or 7 months in the Upper Katanga, DRC. We collected 332 pregnant women from the health zones of Kilwa, Kasenga and Kashobwe, all pregnant teenagers aged between 10 and 19 who had come for delivery in the maternity hospitals of the so-called HGRs and living respectively in these health zones.
Data Collection and Parameters of study variables
Regarding our study, the information on the pregnancies was drawn on the partograph, the consultation sheets in addition we used the delivery record associated with the structured interview. For the study parameters: the socio-demographic parameters: Age, Anthropometry, Level of education, Marital status, Parity, Gestity. The clinical parameters to arrive at its realization. In our study we are more based on clinical parameters to achieve its realization. For the clinical elements, the Mode of admission in the delivery room, the age of pregnancy calculated from that of the last rules declared by the parturient, grouped in prematurity (<38 AS), term pregnancy (38 - 42 SA), post-term pregnancy (42 SA). The basin state is normal, limited and narrowed. For narrowed and bounds the promonto retro pubic (PRP) was calculated to be either 10.5 to 9.5 cm for the limit and <9.5 cm narrowed or surgical. The delivery route is laparotomy extraction (caesarean) or natural low pathway.
Consent was obtained from parturients after having been informed about the progress of the study. The study was approved by the Medical Ethics Committee of the University of Lubumbashi.
The data encoding was done using the Epi Info 7.2 software and the latter were analyzed using the SPSS 23.0 software. Qualitative data were presented as absolute and relative frequencies. For quantitative data except for absolute and relative frequencies, the position indices (mean and median) and dispersions (standard deviation, quartile) were added. Similarly, to test the normality of the latter, the Kolmogorov-Smirnov test was used. Quantitative variables were dichotomized for use in mathematical modeling. We searched for intergroup associations using the Pearson chi-square test and for values less than 5 we used the exact Fischer test. An adjustment was made by stepwise binary logistic regression according to the ascending Wald method and any variable with p < 0.05 was introduced into the model and the confidence interval was 95%.
The prevalence of adolescent women in our study was (14.00%). More than half of the parturients in our study, that is (69.28%) were over 15 years of age while in (30.72%) they were under 15 years of age. The average is 16 ± 1 years with 13 and 19 years as extremes. In relation to the level of education and marital status, about 7 in 10 parturients (68.98%) were illiterate (32.53%) or had a level of primary education (36.45%); similarly, about 7 in 10 parturients (68, 67%) were single while only 3 in 10 (30.72%) were married. Regarding obstetric identity, more than three quarters of parturients (76.20%) were nulliparous; however, almost a quarter of them (23.80%) had already had a maternity or more; (65%) of parturients were in their first pregnancy, while (34.64%) had already had one or more pregnancies. More than half of the parturients (57.53%) had followed the ANC and, in (73.49%) of the cases, the parturient had not performed the ultrasound and that only (32.95%) performed early (Table 1).
As shown in Table 1, pregnancy at ages < 15 exhibited 4 times at cesarean section as at vaginal delivery with highly significant statistical difference, (OR: 3.66 [1.32 - 10.24]) and sizes < 150 cm at 3 cesarean section as the low pathway with a highly significant statistical difference, (OR: 3.48 [1.18 - 10.18]).
Table 1. Factors associated with teenage delivery.
As shown in Table 2, the fact of being referred exposes adolescent girls to cesarean section 17 times with a highly significant statistical difference (OR 17.22 [5.69 - 52.09]); the uterine height > 34 to 4 times, with a highly significant statistical difference (OR 4.06 [1.45 - 11.39]), the presentation sits at 11 times with a highly significant statistical difference (OR 10.90 [3.69 - 32.15]), tinted amniotic fluid was 7 times the chance to deliver by caesarean section with a highly significant statistical difference (OR 6.56 [2.30 - 18.66]) and finally a pathological pelvis 4 times the chance to deliver by caesarean section with a highly significant statistical difference (OR 3.63 [1.07 - 12.31]).
As shown in Table 3, Uterine height > 34 cm, seated presentation, and mode of admission (referred) were significantly associated with cesarean delivery in adolescents with adjusted odds ratios of [12.21 (CI: 2.46). 41, 40)]; [10.11 (CI: 2.71 - 37.59)] and [21.21 (CI: 5.43 - 82.79)], and exposed adolescent girls to cesarean section in [10.11 and 21.21 times].
Table 2. Factors associated with teenage delivery (2).
Table 3. Adjusted variables exposing the adolescent to cesarean section.
Of all the deliveries encountered during our study period, adolescent delivery was 14%. Some studies carried out elsewhere have reported low frequencies, such as those of Lerner in Latin America (0.6%), Hamada in Morocco (2.6%), Iloki in Brazzaville (5.3%) and Kakudji in Lubumbashi in 2017 (7.7%) [36.46 - 48]. On the other hand, our prevalence was similar to the study carried out in urban areas by Tambwe in Lubumbashi in 1999  which was 13.9%. Our results were also superimposable on those of the WHO which reports that teenage motherhood is more common in developing countries where the proportion of women mothers before the age of 18 often reaches 11% . Our frequency is higher compared to several authors mentioned above because of our larger sample of the methodology used but also because the health zones of Kilwa, Kasenga and Kashobwe being rural areas, we believe that the occurrence of a Pregnancy in adolescence is more common in young people who come from a disadvantaged socio-economic background. Our study shows that the majority of our parturients were over 15 years of age with an average age of 16 ± 1 years (69.28%). The average age is around 15 years; this age is described by several authors as being the pivotal age for physical maturity by ricochet the development of the pelvis. In addition, on the social level, it is an age of curiosity, great tremors which requires support via the various support platforms for the family, the school, the church, etc. Special observations have been made by different authors during this age such as Voltzenlogel à Renne in 2014  who reported that it is around the age of 15 that there are many terminated pregnancies. For Alouini in France in 2015  meanwhile, they were premature deliveries and obstructed labor. Other authors cited by Fatouma in Bamako, described the increased risk of anemia and malformed newborns . For our part, in view of the above, giving birth at this age in our environment could be explained on the one hand by 1) the lack of knowledge about the risk run by parturients who, generally have little weight in decisions that affect their fertility; and their prospects for education or professional training are limited  2) the precociousness of sexual activity which depends on a number of biological, cultural, and religious factors and the age of menarche. 3) Finally, the age of marriage and the tolerance of society for sexual relations before marriage.
In our series, age < 15 years and height < 150 cm were statistically related to high birth with odds of 3.66 [1.32 - 10.24], respectively; 3.48 [1.18 to 10.18]. According to the WHO, adolescent girls aged 10 - 14 had a high birth rate in 43.3% which was statistically significant compared to adolescent girls aged 15 - 18 (32.5%) . This is consistent with the studies of Henry Galardo who reported that the adolescent under 15 was associated with a higher risk of caesarean section with OR 1.3 [1.14 - 1.51] . And the Malabarey study that suggested an increased rate of caesarean section especially among teenagers under 15 years of age . In contrast to Wermoux, who found no signifi- cance between the Caesarized aged under 15 years and that of older age, thus reporting a frequency of 11% . In addition, Zeteroglu has shown that the biology factors associated with high birth are low weight, small size and parity. We believe that age below 15 would be subject to adverse outcomes due to biological immaturity . Our study also showed that the “coming from” admission mode, the “seat” presentation, the “unclear” amniotic fluid, and the “pathological” pelvis were statistically related to high birth delivery. And after adjustment, it was observed that the hauteur34 cm uterine height, seat presentation, and admission pattern were significantly associated with cesarean delivery in adolescents with respective odds ratios of 12.21 (CI: 2.46 - 41.40); 10.11 (CI: 2.71 - 37.59) and 21.21 (CI: 5.43 - 82.79). Alouini reported that the indications for caesarean section in adolescents were abnormal fetal heart rate (six cases out of 14), maternal pathology (five cases), mechanical dystocia (two cases) and stagnation of dilatation . The BACCI study in Mozambique found that the main indication for caesarean section among adolescent girls was dystocia 41%    for all operations performed in these women, followed by pain and hypertension  . Studies in the United States and Turkey have reported that caesarean delivery between teenage girls has been more indicated for hypertensive disease (ORa = 1.34, 95% CI = 1.02 - 1.77)  and for pelvic fooper disproportion, (ORa = 1.76, CI 1.237% - 2.51395%) . In the context like this; in a teenager who is free from all indications of cesarean section, with excessive reference and/or uterine height and/or podalic presentation, the potential for cesarean section is no less.
In view of the results of our study, it is important to note that childbirth in adolescents is a serious morbidity, it must attract the attention of the clinician in an adolescent girl referred with a significant uterine background, a pathological appreciation of the pelvis. When modeling; uterine height > 34 cm, breech presentation and “referral” mode of admission were significantly associated with cesarean delivery in adolescents.
They are addressed to all authors who contributed to the study at the Ministry of Health of Upper Katanga who supported part of this study.
Contributions of the Authors
MKP and KSZ designed the study. KMC, II, TH and MNA analyzed the data and all the authors discussed the results. They all commented and approved the final version of the article.
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