Out of a total of 1418 hospitalized newborns, we identified 314 LBWs. Two hundred and thirty-four (234) newborns with LBW were included in the study, including 146 at the University Hospital, 49 at the Regional Hospital, and 39 at the MCH SOS. The incidence of LBW was 22.14%. Eighty (80) LBWs were not included for lack of usable information. Of these LBW newborns, 82.91% were premature and 17.09% were hypotrophic born at term.

The average age of the mothers was 28.62, with extremes of 14 and 49. The most common age group was 18 to 29, with 42.74%. Almost half the mothers (44.02%) lived in rural areas, and 50.85% were housewives. 52.99% had at least primary school education, and 93.16% were married.

Concerning their obstetrical history, 44.87% of the mothers were primiparous and 29.91% were multiparous. They had had fewer than 4 antenatal contacts in 59.83% of cases. The mean age of onset of ANC was 18.44 weeks, with extremes of 4 weeks and 36 weeks. The mothers in 61.04% (n = 141) had received 2 to 3 doses of sulfadoxine-pyrimethamine. The most frequently diagnosed pathologies were malaria (7.79%) and vaginitis (6.93%). Premature rupture of membranes and anamnios were found in 14.1% and 1.71%, respectively. The women had not undergone any antenatal paraclinical examination in 32.47% of cases.

Inborn babies accounted for 62.39%. In 3.85% of cases, newborns were delivered at home. Males predominated in 53.85% of cases. The average weight of the newborns was 1607.46 g, with extremes ranging from 800 to 2450 g ( Table 1 ).

On admission, 60.68% of newborns had a normal temperature of between 36.5˚ and 37.5˚. Oxygen saturation was greater than 92% in 84.62% of cases. Cyanosis was noted in 8.5% of children.

Blood counts were performed in 143 newborns, 30.07% of whom were normal. The hemoglobin level (TH) was less than 14 g/dl in 9.8% (n = 14) of cases, and the white blood count was greater than 25,000/mm³ in 60.14% (86). One hundred and twenty-two (122) newborns had CRP tests, of which 37.7% (46) were positive. Blood urea and creatinine levels were taken in 11 children, 80% of whom were normal.

Forty (40) children had blood glucose tests, 67.5% (n = 27) of whom had normal blood glucose levels. In 42.74% of cases, moderate prematurity (born between 32 and 34 weeks of amenorrhea) had been diagnosed ( Table 2 ).

The newborns had received breast milk in 93.59% of cases, and the age of initiation of breastfeeding (chronological age) was on average 1.43 days, with extremes of 0 and 14 days.

29.06% of the LBWs had not received kangaroo maternity care (KMC). The onset of KMC according to chronological age was 2.11 days on average, with extremes of 0 and 16 days.

Eighty-six (86) newborns (36.75%) had received antibiotic therapy, 22.22% oxygen and 20.52% phototherapy.

No complications occurred in 8.97% of LBW patients ( Table 3 ).

The outcome was favourable in 54.27% of cases, with a mean discharge weight of 1769.24 g. The extremes were between 1050 g and 2600 g. We noted that 15.98% of premature babies and 20% of hypotrophic babies born at term gained more than 60g per day.

The case fatality rate was 37.61% (n = 88) of which 82.95% (n = 73) were premature and 17.05 (n = 15) were hypotrophic.

The average length of hospitalization was 6 days.

The frequency of low birth weight in our series was 22.14%, lower than in the study by Azoumah et al. where low birth weight presented in 30.8% of hospitalized newborns [9] . This difference may be explained by the improvement in the health situation associated with the introduction of national health programs aimed at pregnant women (prevention and management of malaria, prevention and management of anemia). On the other hand, it is higher than the international average of 17% [2] , which can be explained by our country’s low social and health status.

The predominance of premature babies (82.91%) among LBW corroborates international data showing that a large proportion of LBW are premature [1] . This finding highlights the importance of focusing interventions on preventing prematurity and improving antenatal monitoring.

The most represented age group is 18 to 29 years (42.74%), comparable to the results of Traore in Mali in 2011, where the most represented age group was 20 to 24 years [10] . We can try to explain this by the expansion of sexual activity in this age group with a high frequency of pregnancies, sometimes unintentional. Most of the mothers had a primary school education (52.99%). According to Silvestrin et al, mothers with a high level of education had a 33% lower risk of having a child with an LBW than those with a low level of education. On the other hand, an average level of education did not show any significant protection [11] . These results underline the importance of maternal education in preventing LBW. In rural areas, housewives make up the majority of the population, and their incomes are lower. Mothers’ low purchasing power means that they are unable to feed themselves properly during pregnancy and to provide an environment conducive to a healthy pregnancy.

A significant number of mothers lived in rural areas (44.02%). Housework and farming in rural communities are activities that require a great deal of time and effort. As a result, pregnant women are very tired and lack the rest necessary for the development of the fetus. Some women have no access to antenatal care because of the distance from health centres. The precarious living conditions in the villages are not conducive to a balanced diet. All these factors can lead to premature deliveries and intrauterine growth retardation.

In our study, nearly 60% of mothers had attended fewer than four antenatal clinics (ANC), and around a third had not had any paraclinical examinations, which is a well- documented risk factor for LBW [12] . The low uptake of quality antenatal care reflects the structural challenges faced by health facilities in semi-urban and rural areas, particularly in terms of human resources and equipment. These shortcomings are similar to those reported in other African contexts [5] [13] , and justify the WHO’s recommendations for an overall improvement in the quality of care for preterm and low-weight infants [1] .

The high prevalence of neonatal infections (36.75%) in our series is also a cause for concern. These infections are known to be one of the leading causes of neonatal mortality in LBW, especially in the context of prematurity [5] [14] . The high proportion of newborns with a white blood cell count >25,000/mm³ and positive CRP testifies to the immune vulnerability of these children. This highlights the need to reinforce hygiene practices, early detection and rapid management of infections, as recommended by WHO standards [14] .

With regard to the care provided, breastfeeding (93.59%) and the use of kangaroo mother care (70.94%) are positive practices, although they are still insufficiently optimized. These results show the involvement of nursing staff in promoting breastfeeding and the mothers’ adherence to this practice. Furthermore, it is recognized that exclusive breastfeeding and SMK play a crucial role in reducing neonatal mortality, improving thermoregulation, growth and mother-infant attachment [7] [8] [15] . Phototherapy and oxygen therapy were used in 20.52% and 22.22% of cases respectively. These figures illustrate the frequency of complications such as neonatal jaundice (20.52%) and respiratory distress (11.97%), which are common in premature babies, particularly those of very low birth weight [16] [17] .

Despite these good practices, the case fatality rate in our study remains high (37.61%), higher than that reported by Adetola et al. in Nigeria and Getoneh et al. in Ethiopia [15] [16] . This rate could be explained by the delay in initiating care, the lack of equipment, the multiple complications, but also by the very low weight on admission (average weight of 1607 g, with cases at 800 g). It also emerges that in the centers studied, access to functional incubators, oxygen concentrators, or neonatal ventilation is limited. This technical deficit reduces the ability to adequately manage major LBW complications such as respiratory distress syndrome or hypothermia [18] . Additionally, the lack of neonatal monitoring (pulse oximeters, closed incubators with thermal and humidity regulation) also hinders early detection and treatment of signs of decompensation. Studies have shown that introducing simple yet effective equipment, such as neonatal resuscitation bags and low-cost CPAP devices, can significantly improve LBW infant survival [19] . The survival of very low-weight newborns is highly dependent on available resources and access to specialist care, as confirmed by several studies [14] [16] . Furthermore, the absence of systematic recording of vital signs and the lack of neonatology-trained personnel worsen the impact of under-equipment. In low-tech settings, healthcare workers are often forced to improvise suboptimal solutions. It is therefore imperative that health policies integrate not only staff training but also the provision of equipment suited to local conditions. Strategies such as the WHO’s “Every Newborn Action Plan” recommend strengthening the technological capacity of peripheral health facilities to improve LBW care [20] . In addition, the weight growth observed at discharge (59.52 g/kg) is encouraging, particularly in the case of almost 47.5% of hypotrophic babies who achieved a gain of more than 15 g/kg/day. This growth is consistent with the recommendations for postnatal monitoring of very low birth weight babies, which stipulate that good weight gain is a positive indicator of recovery [16] .