Rare Neonatal Digestive Surgical Emergencies at the Brazzaville University Hospital Center

The purpose of our study was to evaluate the morbidity-morality of rare neonatal digestive emergencies in order to improve their management. Observations: 7 newborns ranging in age from 6 hours to 3 weeks were treated for rare digestive pathologies between January 2013 and July 2017 (a period of 3 years and 6 months) in the Department of Pediatric surgery of Brazzaville University Center, Congo. Males were predominant (5 versus 2 females). Pathologies listed were: 1 antenatal volvulus of the small intestine, 1 annular pancreas and 5 gastric perforations. The average time of care in the operating room was 12 hours. The newborns were hospitalized in the pediatric surgery department in 28.6% of cases (n = 2), and 71.4% (n = 5) in the neonatology department. The antenatal volvulus of the intestine and annulus pancreas were integrated into a nosologic entity named neonatal occlusion (NNO). The postoperative outcomes were simple for 4 patients (57.14%) while 3 patients died immediately after surgery (42.86%). Conclusion: Neonatal surgical emergencies are still difficult to manage in our context. The lack of knowledge of these rare pathologies, which delays their management, considerably increases morbidity-mortality. The critical analysis of this series highlights diagnostic and therapeutic difficulties particularly with gastric perforations, hence the interest of better popularization of pediatric surgery.


Introduction
Neonatal digestive surgical emergencies are congenital or acquired conditions of the newborn's digestive tube that require immediate surgical intervention [1] [2]. Digestive pathologies represent more than half of neonatal surgical emergencies [2]. With their average frequency estimated at 1/5000 live births and their mortality rate still high according to the literature, they constitute a serious perinatal health problem [1] [3]. In developed countries, prenatal diagnosis and progress in neonatal intensive care anesthesia have profoundly modified management modalities, dramatically improving the prognosis of these pathologies and thus reducing their mortality rate. However, mortality remains very high (43.1% case fatality rate) in the sub-Saharan African region [4]. Anorectal malformations are characterized by the absence of the anal orifice, the rectum with either a dead-end far from the perineum or a thin path called fistula. Alberto peñaclassifies them into anatomic forms depending on the gender and the anastomosis of the rectum. If the diagnostic is not done in the delivery room, warning signs will be those of the intestinal occlusion and the treatment dependent of the gravity of the anatomic form. Hirchsprung disease, also called congenital megacolon, is a functional anomaly of the terminal part of the intestine whose pathognomonic sign is the delay in the emission of the meconium beyond 24 hours. The classical manifestation is sub-occlusive array requiring nursing, the forms of intestinal still found indicate the establishment of a bypass colostomy [3]. Some of these pathologies are classified as rare because of their low frequency [5] [6], but they are a real management problem in the context of underdeveloped countries. The purpose of our study is to evaluate the morbidity-mortality of these rare neonatal digestive emergencies in order to improve their management.

Observation 1
A female newborn admitted two days after birth for abdominal bloating and greenish emesis noted a few minutes after birth before the first breastfeeding.
The pregnancy was completed with 4 prenatal consultations without antenatal ultrasounds. Delivery was eutocic at an infantile and maternity center. Weight at birth was 3000 grams with an Apgar of 10/10, other anthropometric elements (height and head circumference) were not specified. Discharge from the center a few hours after delivery despite the persistence of greenish vomitus. An antibi-Open Journal of Pediatrics otic was administered. Given the persistence of abundant emesis and the impossibility of breastfeeding, the newborn was brought to the University Hospital Center of Brazzaville. On arrival, the newborn weighed 2800 grams, had a bloated abdomen. Parietal transparency revealed purplish loops and there was abundant vomiting during the examination (Figure 1). The decision to perform an emergency laparotomy for neonatal occlusion was made after standard biology report. No imaging was conducted.
We performed a mini supra and sub umbilical laparotomy. During surgery, a complete ischemia of the small intestine with a double coil presence was revealed ( Figure 2 and Figure 3).
We conclude that it is an antenatal volvulus of the small intestine without a mesentery rotation anomaly. After unwinding the coil, we observed a pre-perforating zone of approximately 2 cm located at 10 cm of the ileo-caecal valve and a progressive and slow recoloring of the loops ( Figure 4).
We performed a resection with end to end anastomosis and a rigorous washing and progressive reintegration of loops. The closing was done free of tension respecting different planes. Transfusion during and after surgery was necessary.

Observation 2
A male newborn was admitted 3 days after birth for early milky post-prandial vomiting. The pregnancy was well monitored with 6 prenatal consultations and 3 antenatal ultrasounds. None of the antenatal ultrasounds revealed any pathology. Delivery was by caesarian because of the late first pregnancy (mother aged 35) and took place in a private clinic. Anthropometric parameters were: birth weight 2750 grams, Apgar 10/10, height 35 cm and head circumference 35 cm.
At examination, the newborn was in overall good state presenting milky emesis, a flat, flexible and trough-like abdomen with peristaltic waves (signs of struggle) in the epigastric quadrant ( Figure 5).

Observations 3, 4, 5, 6, 7
The five patients were all managed by the neonatology unit for neonatal infections and/or premature birth. Four were male with average age being twelve days

Discussion
Our study's aim was to consider how to reduce morbidity-mortality due to congenital or acquired neonatal digestive emergencies. We were interested in a particular group of these pathologies, specifying the epidemiologic, clinical, therapeutic and evolving aspects. Our study, based on seven cases represents certainly a small cohort, but it takes into account certain rare pathologies of difficult diagnosis and management in our context. It is not comparable to case series in contexts where advanced medical technology in antenatal diagnosis, neonatal surgery and neonatal intensive care [7], has allowed a spectacular decrease of the mortality, going from 50% to 10% in a decade.
In Sub-Saharan Africa, most studies take into account all neonatal emergen- None of these studies addresses a series of rare pathology as ours has listed.
However like our study, they concern newborns from 0 to 28 days [2] [3] [11] for some and from 1 to 30 days for others [12]. The sex predominance in our series is male with a sex ratio of 2.5, it varies depending on authors, with a sex ratio of 0.8 for Mieret [2], 0.9 for Boumas [11], 1.4 for Midekor [9] and 1.5 for Cikomola [8]. Our 12 hours average management delay surpasses by far that of African series due to scarcity and seriousness of the pathologies. Management delay also varies depending on authors Boumas [11] 4.9 days. The pathologies in different studies include few digestive surgical emergencies (3.3%) [8] and neonatal emergencies (0.07%) [9].
Barry [1] in Bamako-Mali, found 4 digestive peritonitis cases (11%) without any precision of location, Boumas [11] in Libreville 9 cases (0.2%) of peritonitis without further precision. Mady-Goma's study in Brazzaville [3] with 7 cases of gastric perforation is close to our series of 5 cases, these numbers much higher to those of numerous studies with 1 to 2 cases [13]- [18] can only be explained by the possibility of an iatrogenic cause. All factors favoring idiopathic perforation described in the literature are found in our study namely, poor pregnancy monitoring with less than 3 prenatal consultations for 4 of 5 newborns, 4 dystocic deliveries out of 5, one of which was homebirth, prematurity for 4 cases, hospital stay for all 5 cases and neonatal infections for 2 cases. We could not determine the etiology of these idiopathic or iatrogenic perforations, the latter can be attributed to intermittent tubing in neonatology services, in search of gastric residues prior to any breastfeeding.
The antenatal volvulus and the annular pancreas are rare in African series and Open Journal of Pediatrics their management remains delicate even in the West. The antenatal volvulus is presently, with progress in the intensive care, managed by antenatal surgery, because it remains the cause of high neonatal mortality rate and could be due to anti-kell [19] allo-immunization, the single case of our series is of positive evolution.
The annular pancreas is a rare congenital anomaly, in which the pancreatic tissue surrounds the second portion of the duodenum, causing duodenal occlu-

Conclusion
The University Hospital Center of Brazzaville is the only reference center for the management of neonatal surgical emergencies in the Republic of Congo. The anesthesia-intensive care team is still common for children and adults. Analyzing our results namely 7 cases of rare digestive pathologies, we experience difficult management with a very high mortality rate of 42.86%. We estimate that the improvement of the vital prognosis of all neonatal emergencies, particularly those listed in our study requires the implantation of a modern neonatal intensive care setting and continuing training of care givers enabling early diagnosis and management. This will help decrease difficulties of underdeveloped countries, already depicted in different African series.

Conflicts of Interest
Authors declare they have no conflicts of interest.