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ORIGINAL ARTICLE
Year : 2020  |  Volume : 25  |  Issue : 5  |  Page : 291-296
 

Early feeding after colorectal surgery in children: Is it safe?


Department of Pediatric Surgery, N R S Medical College, Kolkata, West Bengal, India

Date of Submission19-Aug-2019
Date of Decision12-Oct-2019
Date of Acceptance08-Apr-2020
Date of Web Publication1-Sep-2020

Correspondence Address:
Dr. Sumitra Kumar Biswas
Flat C1 and C2, Shankhochil Apartment, IH – 17, Pubali, Aswini Nagar, Baguiati, Kolkata - 700 059, West Bengal
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/jiaps.JIAPS_132_19

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   Abstract 


Aim of the Study: The aim of this study is to assess the role of early feeding after elective colorectal surgery in children and compare the outcome of feeding practice early versus traditional feeding.
Study Design: A randomized controlled, single-center study was conducted over a period of 3 years (November 2015–October 2018) at a tertiary care center.
Materials and Methods: Patients (n = 147), after colostomy closure (as elective colorectal surgery), were randomly selected for postoperative feeding initiation and were divided into two groups, namely the control (traditional feeding) group and study group (early feeding). In early group, feeding was initiated on the postoperative day 1 after the removal of nasogastric tube (removed after 16 h of surgery). Postoperative hospital stay and complications were compared among them.
Statistical Analysis Used: Data were tabulated and analyzed in Microsoft Excel 2010.
Results: Among 147 patients (boys[70] and girls [77]), the average age of colostomy closure was 4.36 years. Forty-five patients had early feeding and 102 traditional feeding. Average postoperative hospital stay was noted 5.62 ± 1.11 days for “Study group” and 8.1 ± 1.04 days for “Control group.” Postoperative complications were found in 17 patients; 11 (7.5%) superficial surgical site infection (9 [8.8%] in control and 2 [4.4%] in study group) and 6 (4%) minor fecal fistulae (5 [4.9%] in control group and 1 [2.2%] in study group). None required any further surgical intervention. No mortality was reported.
Conclusions: Early feeding initiation after elective colorectal surgery is safe, and postoperative hospital stay is significantly reduced. It is definitely a step forward in the era of fast track surgery in pediatric population.


Keywords: Colostomy closure, complications after colorectal surgery, nasogastric tube, postoperative feeding


How to cite this article:
Ghosh A, Biswas SK, Basu KS, Biswas SK. Early feeding after colorectal surgery in children: Is it safe?. J Indian Assoc Pediatr Surg 2020;25:291-6

How to cite this URL:
Ghosh A, Biswas SK, Basu KS, Biswas SK. Early feeding after colorectal surgery in children: Is it safe?. J Indian Assoc Pediatr Surg [serial online] 2020 [cited 2020 Oct 31];25:291-6. Available from: https://www.jiaps.com/text.asp?2020/25/5/291/293997





   Introduction Top


Following elective colorectal surgery, we commonly prefer bowel rest by nasogastric (NG) decompression and subsequent waiting till there is the return of bowel movement in a traditional way which means a passage of flatus or feces, earliest on the postoperative day (POD) 3 or more.[1],[2],[3],[4] Up to this period, patients are deprived of enteral feeding, and NG tube is also kept in situ until the content reduced and turned clear.[4] This was justified by the perception that the fasting would protect the anastomosis from any complications and would allow a hermetic closure of anastomosis before the beginning of the enteral feeding.[5],[6],[7]

However, this practice has recently been challenged as there is no scientific basis for these ideas.[8] The effect of a prolonged fasting in an elective colorectal anastomosis in children has not been well analyzed.[9] On the other hand, there are a lot of justified reasons to believe that it is functionally possible to begin early feeding, in the POD 1.[4],[10],[11] Even if we do not give oral feeding, about 1.5–2 L of gastrointestinal (GI) and pancreatic secretions enter and pass through the distal bowel, and after absorption, a significant amount transit through the anastomosis site, thus feeding has no additional adverse effect on anastomosis site.[10] Early enteral feeding has been shown by various clinical trials as having benefits in the reduction of postoperative ileus and hospital stay. Postoperative dysmotility predominantly affects the stomach and colon, with the small bowel recovering normal function 4–8 h after laparotomy. It is evident from different studies that after surgery the return of bowel function and motility occurs within 6–12 h in the small bowel, 12–24 h in the stomach, and within 48–72 h in the large bowel.[12] From clinical studies, it is evident that starting early feeding is advantageous in postoperative patients, whereas postoperative starvation changes the metabolism of the body within 24 h by increasing insulin resistance and reducing muscle function.[13] Feeding within 24 h after laparotomy is tolerated and “feed” is absorbed.[9]

Children and infants are always eager to take food early after the operation. As there has been a history of one or more operations previously in case of anorectal malformation, the nutritional status of those patients is usually not satisfactory. GI blood flow is reduced in patients after various types of critical illnesses and conditions. Manipulation of the intestine initiates the pathogenesis of intestinal edema, which might be involved in alteration in GI blood flow and promote inflammatory response using the activation of macrophages and invasion of neutrophils.[14],[15],[16] Many investigators have reported that enteral nutrition (EN) may dampen the inflammatory response and thereby reduce postoperative inflammation, whereas another mechanism may be the stimulation of bowel movements by the input of nutritional liquids.[15],[16] Hence, early oral feeding improves the nutritional status of patients and helps healing of the wound properly. Early feeding also reduces the postoperative complications.

Long stay in the hospital increases the hospital-acquired infections such as upper respiratory tract infection and diarrhea which are present more in delayed fed patients.[17] Hence, early feeding helps the patients to reduce postoperative hospital stay and nosocomial infection. In our hospital, we have noticed that postoperative children are restless if they are deprived of food. It is also difficult to establish and maintain intravenous access for these children for long. There are few studies aiming at the effect of early feeding but mostly are performed in the retrospective group.[8],[18]


   Materials and Methods Top


Study place, duration, type, and study population

This study was performed in the department of pediatric surgery at a tertiary care center in Kolkata, India, during the period of 3 years (November 2015–October 2018).

In this single institute-based randomized control study, all patients were chosen randomly from all the three units of the department for postoperative feeding initiation and they were divided in two groups, namely Group A for traditional feeding (chosen from two units) or “control group” and Group B for early enteral feeding patients (chosen from a single unit) – “study group.”

Protocol of feeding after colostomy closure

Group A (control group)

Patients were kept nothing by the mouth until the documentation of bowel function, which meant a passage of flatus or feces, usually earliest on the 3rd POD. A nasogastric tube was kept in situ until the content reduced and turned clear.

Group B (study group)

Enteral diet was started in the next morning within 16–24 h of the 1st POD. Feeding was started with clear water. Then, breast milk and other liquid diet were allowed with 3–4 h interval. Usual diet was started on the 3rd POD. The nasogastric tube was removed in the morning of the 1st POD [Table 1].
Table 1: Protocol of feeding after surgery

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Criteria for nasogastric tube reinsertion

The NG tube was reinserted dependent on two episodes of vomiting >100 ml within 24 h in the absence of bowel movements.

End of the study

Postoperative establishment of full-enteral feeding and discharging without complication from the hospital was marked as the end point of the study in both groups. Hence, the duration was calculated from the date of surgery to date of discharge.

Data analysis

Data were tabulated and calculated for age, sex of patient, initiation of postoperative feeding, complications, and postoperative hospital stay. All statistical data analysis were conducted in Microsoft Excel 2010.

Inclusion criteria

Children with status colostomy who underwent elective colostomy closure after adequate proximal mechanical bowel washing with polyethylene glycol and nonresidue diet for 2 days and clear water and liquids (oral rehydration salt) for 1 day before surgery along with distal mechanical bowel wash with normal saline (0.9%) till the visibility of a clear effluent were strictly followed.

Exclusion criteria

Patients with associated comorbidities such as seizure disorder, cardiovascular defect, complications in previous surgeries, multiple (>2) abdominal surgeries, adhesions leading to long-operating time and during surgery gross luminal disparity between the proximal and distal colon were excluded from the study. The present study was also terminated if postoperative ileus or major anastomotic leak had been a suspect.

Consent for surgery, postoperative feeding, and data collection

For the study, permission from the Institutional Ethics Committee had been obtained. In addition to that, written consent in the language of patient's parent/guardian (Bengali/English/Hindi) was taken before each surgery separately.


   Results Top


In our study, 147 patients were selected, of which 70 were boys and 77 were girls. Twenty-three boys and 22 girls had “early feeding,” and the rest had “traditional feeding” [Table 2].
Table 2: Demographic data of patients

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Minimum age of surgery was 1 year, and maximum of 12 years with an average of 4.36 years. Mean age of “early feeding” group was 4.48 ± 1.27 years and “traditional feeding” group 4.3 ± 2.1 years. However, this difference is not statistically significant (P = 0.115). Two-third of patients (98) has been operated within 4 years of age (66.67%) [Chart 1].



Postoperative early enteral feeding was initiated in Group B or “study group,” and number of patients was 45. Traditional feeding was started in Group A or “control group” and total number was 102 [Chart 2].



Postoperative hospital stay (in days) has been calculated, and the result analyzed in four groups. In patients with “early feeding” group, minimum stay was 4 days and maximum 8 days with an average stay of 5.62 days, and in “traditional feeding” group, minimum stay was 6 days and maximum stay 13 days with an average stay of 8.1 days [Table 3].
Table 3: Postoperative hospital stay statistics

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Among all, complications have been found in 17 patients – superficial surgical site infection (SSSI) in 11 and fecal fistula in six patients. None required any postoperative surgical intervention, and all were treated conservatively. In “early fed” group patients (n = 45), postoperative complication was found in only 3, and in “traditional fed” group (n = 102), it was in 14 patients. “Early feeding” and “traditional feeding” group had minor anastomotic leak in one and five patients, respectively, which were treated conservatively. The results are statistically significant [Table 4].
Table 4: Postoperative complications

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Following postoperative feeding initiation, no patient required reinsertion of NG tube according to the “clinical criteria for reinsertion.”


   Discussion Top


This study was made to assess the outcome of early initiation of postoperative feeding and their effect on postoperative hospital stay and complications. It has already been demonstrated that mucosal epithelium of the bowel is perfectly sealed after the first 24 h of the postoperative period.[6] In our study, we started early feeding at 16–24 h. It has been also shown that early feeding accelerates the wound and anastomosis healing in the animal model.[19] Early feeding reverses the mucosal atrophy induced by the starvation and increases anastomotic collagen deposition and strength.[20],[21],[22] There are two end points of our study. First is to look for postoperative ileus and time taken for first defecation after surgery and the second end point is its clinical outcome by means of postoperative complication and length of hospital stay.

Early feeding delays postoperative ileus, helps in wound healing and reduction of sepsis.[13] Postoperative ileus had been an important reason for patients kept nothing per oral (NPO) in the postoperative period. To assess the postoperative ileus, first, the NG tube is removed on the morning of POD 1 and followed up carefully. It was strictly maintained that NG tube should be reinserted when the two episodes of vomiting >100 ml within 24 h. This recommendation was the outcome of another study.[23]

Postoperative nutrition is another important factor to support clinical end point, i.e. postoperative complication and the length of hospital stay. Nutrition care protocol is followed as per recommended by the another study.[14] In our study, we did not use total parenteral nutrition (PN) during the initial postoperative period in any patients. We inserted NG tube up to the stomach only not up to first loop of the jejunum as per the previous study.

Early EN may also reduce the inflammatory response and thereby reduce anastomotic leakage. In the experimental setting, EN prevents adverse structural and functional alterations of the anastomotic position by improving the intestinal blood flow and modulating the systemic and local immune response.[24] Our study confers that only 2.2% children had anastomotic dehiscence (minor leak) which was treated conservatively compared to 4.9% in “Control Group.”

We also noticed SSSI is higher (7.5%) than “early fed” Group (2%). Hence, the contention that early feeding will jeopardize healing and cause anastomotic leak is refuted. Adhesiolysis can delay the return of peristalsis as intestinal adhesion and prolong gut handling lead to ischemic bowel injury and decreased blood flow. According to another study, EN may also improve splanchnic blood flow and ischemic injury. In fact, although feeding increases GI oxygen consumption, the concomitant increase in oxygen delivery leads to better “delivery to consumption ratio” in the “fed” versus the “unfed” state. Histological evidence has proven that EN preserved the gut flora architecture, prevented GI mucosa atrophy, and inhibited microbial translocation from the gut to the blood stream leading to postoperative complications.[25] All patients with complications were treated conservatively, and no mortality was there.

In a study by Nematihonar et al., the patients with “early feeding” expressed greater overall satisfaction with treatment process based on the Visual Analogue Scale criteria compared to patients with “late feeding.”[11] The overall duration of hospital stay had a remarkable effect on patient satisfaction with the treatment procedure and costs. We also observed a marked difference in postoperative hospital stay in “Study group.” According to feeding protocol, NG tube was removed in POD 1 (at 16 h postoperative), and liquid was initiated on day 1, subsequent diet was established from POD 2–3 onward. As a result, we noticed an average hospital stay after the surgery in “Study group” 5.62 days and in “Control group” 8.1 days. This result is compared with a study in Bangladesh, Paul et al. where average postoperative stay shown to be 4.14 and 8.09 days, respectively.[4] Hence, early feeding practice has definite advantage over traditional feeding in terms of postoperative hospital stay and complication rate. Positive psychological impact of feeding after surgery may have an important role in the recovery process.[8]

We have analyzed different large-scale studies in the world literature and compared our study with respect to the postoperative hospital stay and complications (anastomotic leak and wound infection) with them[26],[27],[28],[29],[30],[31] [Table 5].
Table 5: Comparison of various parameters of the present study with different other studies

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As per definition, a coordinated perioperative approach aimed at reducing surgical stress and postoperative recovery is termed as fast-track (FT) surgery.[32] Our study enhances the application of FT surgery in the pediatric population.

So, this study adds

  • Early feeding is SAFE even in children after colostomy closure most of which are <4 years
  • Early feeding in form of clear water can be started even after 16–24 h of surgery (less than a day)
  • Septic complications and postoperative hospital stay are significantly reduced in children who received early enteral feeding
  • Strengthens the concept of FT surgery in children.



   Conclusions Top


Like different studies in adult population, our study in pediatric population, also support the concept of early initiation of enteral feeding postoperatively. In elective colorectal surgeries, considering the safety and uneventful recovery of children after colostomy closure, we recommend early start of feeding with clear fluid at POD 1 after the removal of NG tube early in the morning. Subsequent enteral feeding (usual diet) can be established POD 2–3 onward on the basis of tolerance. This must lead to a happy and satisfactory recovery for the child and definitely a step forward to “FT Surgery” in the pediatric population.

Financial support and sponsorship

Nil.

Conflicts of interest

There are no conflicts of interest.



 
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    Tables

  [Table 1], [Table 2], [Table 3], [Table 4], [Table 5]



 

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