Post-operative paralysis and elective ventilation reduces anastomotic complications in esophageal atresia: a systematic review and meta-analysis

The effect of postoperative ventilation strategies on postoperative complications and outcomes in patients with esophageal atresia: Results from the Turkish Esophageal Atresia Registry

OBJECTIVES

Postoperative ventilatory strategies in patients with esophageal atresia (EA) and tracheoesophageal fistula (TEF) may have an impact on early postoperative complications. Our national Esophageal Atresia Registry was evaluated to define a possible relationship between the type and duration of respiratory support on postoperative complications and outcome.

STUDY DESIGN

Among the data registered by 31 centers between 2015 and 2021, patients with esophago-esophageal anastomosis (EEA)/tracheoesophageal fistula (TEF) were divided into two groups; invasive ventilatory support (IV) and noninvasive ventilatory support and/or oxygen support (NIV-OS). The demographic findings, gestational age, type of atresia, associated anomalies, and genetic malformations were evaluated. We compared the type of repair, gap length, chest tube insertion, follow-up times, tensioned anastomosis, postoperative complications, esophageal dilatations, respiratory problems requiring treatment after the operation, and mortality rates.

RESULTS

Among 650 registered patients, 502 patients with EEA/TEF repair included the study. Four hundred and seventy of patients require IV and 32 of them had NIV-OS treatment. The IV group had lower mean birth weights and higher incidence of respiratory problems when compared to NIV-OS group. Also, NIV-OS group had significantly higher incidence of associated anomalies than IV groups. The rates of postoperative complications and mortality were not different between the IV and NIV-OS groups.

CONCLUSION

We demonstrated that patients who required invasive ventilation had a higher incidence of low birth weight and respiratory morbidity. We found no relation between mode of postoperative ventilation and surgical complications. Randomized controlled trials and clinical guidelines are needed to define the best type of ventilation strategy in children with EA/TEF.

Post-operative ventilation strategies after surgical repair in neonates with esophageal atresia: A retrospective cohort study

BACKGROUND

Infants affected by Esophageal atresia (EA) with or without tracheoesophageal fistula (TEF) may require non-invasive ventilation (NIV) in the post-operative period after elective extubation, especially if born preterm. The aim of the paper is to evaluate the role of different ventilation strategies on anastomotic complications, specifically on anastomotic leak (AL).

MATERIALS AND METHODS

Retrospective single Institution study, including all consecutive neonates affected by EA with or without TEF in a 5-year period study (from 2014 to 2018). Only infants with a primary anastomosis were included in the study. All infants were mechanically ventilated after surgery and electively extubated after 6-7 days. The duration of invasive ventilation was decided on a case-by-case basis after surgery, based on the pre-operative esophageal gap and intraoperative findings. The need for non-invasive ventilation (NCPAP, NIPPV, and HHHFNC) after extubation and extubation failure with the need for mechanical ventilation in the post-operative period were assessed. The primary outcome evaluated was the rate of anastomotic leak.

RESULTS

102 EA/TEF infants were managed in the study period. Sixty-seven underwent primary anastomosis. Of these, 29 (43.3%) were born preterm. Patients who required ventilation (n = 32) had a significantly lower gestational age as well as birthweight (respectively p = 0.007 and p = 0.041). 4/67 patients had an AL after surgical repair, with no statistical differences among post-operative ventilation strategies.

CONCLUSION

We found no significant differences in the rate of anastomotic leak (AL) according to post-operative ventilation strategies in neonates operated on for EA/TEF.

Extubation strategies after esophageal atresia repair

BACKGROUND/PURPOSE

Early extubation following repair of esophageal atresia (EA) is desirable unless the anastomosis is under tension, in which case paralysis and post-operative ventilation may reduce the risk of anastomotic leakage. However, complications from emergency reintubations do occur with either strategy. We aim to examine the risk/benefit balance of early and delayed extubation following EA repair.

METHODS

A seven-year retrospective review of all babies that underwent EA repair was performed. Babies extubated within 24 h of surgery were classified as early extubation (EE). Babies intubated beyond the first 24 h were classified as delayed extubation (DE). The EE group was subdivided into babies extubated in operating room (EIOR), and babies who returned to the neonatal intensive care unit (NICU) intubated but extubated within 24 h (EW24).

RESULTS

Forty-six babies were analyzed, and overall 15 (32.6%) required 24 reintubation episodes. Eight (28.6%) babies in the EE group required reintubation. The EIOR group (n = 12) had significantly increased risk of requiring reintubation (OR:7, 95%CI:1.08 to 45.16:p = 0.04) compared to the EW24 group (n = 16). Seven (38.9%) babies in the DE group required reintubation. The complication rate from reintubation after EA repair was 17%.

CONCLUSIONS

Extubation on the NICU within 24 h of surgery carried the lowest risk of reintubation. For babies with a tight anastomosis, elective postoperative ventilation appeared to confer a protective benefit without incurring a high risk of complications from reintubation.

Thoracoscopic oesophageal atresia/tracheo-oesophageal fistula (OA/TOF) repair is associated with a higher stricture rate: a single institution’s experience

PURPOSE

Thoracoscopic OA/TOF repair was first described in 1999. Currently, less than 10% of surgeons routinely employ minimally access surgery. Our primary aim was to review our immediate-, early- and long-term outcomes with this technique compared with the open approach.

METHODS

A retrospective review of all patients undergoing primary OA/TOF (Type C) repair at our institution from 2009 was conducted. Outcome measures included length of surgery, conversion rate from thoracoscopy, early complications such as anastomotic leak and post-operative complications such as anastomotic strictures needing dilatations. Fisher's exact and Kruskal-Wallis tests were used for statistical analysis.

RESULTS

95 patients in total underwent OA/TOF repair during the study period of which 61 (64%) were completed via an open approach. 34 were attempted thoracoscopically of which 11 (33%) were converted. There was only one clinically significant anastomotic leak in our series that took place in the thoracoscopic group. We identified a significantly higher stricture rate in our thoracoscopic cohort (72%) versus open surgery (43%, P < 0.05). However, the median number of dilations (3) performed was not significantly different between the groups. There was one recurrent fistula in the thoracoscopic converted to open group. Our median follow-up was 60 months across the groups.

CONCLUSION

In our experience, the clinically significant leak rate for both open and thoracoscopic repair as well as recurrent fistula is much lower than has been reported in the literature. We do not routinely perform contrast studies and are, thus, reporting clinically significant leaks only. The use of post-operative neck flexion, ventilation and paralysis is likely to be protective towards a leak. Thoracoscopic OA/TOF repair is associated with a higher stricture rate compared with open surgery; however, these strictures respond to a similar number of dilatations and are no more refractory. Larger, multicentre studies may be useful to investigate these finding further.

Oesophageal atresia

Oesophageal atresia (EA) is a congenital abnormality of the oesophagus that is caused by incomplete embryonic compartmentalization of the foregut. EA commonly occurs with a tracheo-oesophageal fistula (TEF). Associated birth defects or anomalies, such as VACTERL association, trisomy 18 or 21 and CHARGE syndrome, occur in the majority of patients born with EA. Although several studies have revealed signalling pathways and genes potentially involved in the development of EA, our understanding of the pathophysiology of EA lags behind the improvements in surgical and clinical care of patients born with this anomaly. EA is treated surgically to restore the oesophageal interruption and, if present, ligate and divide the TEF. Survival is now ~90% in those born with EA with severe associated anomalies and even higher in those born with EA alone. Despite these achievements, long-term gastrointestinal and respiratory complications and comorbidities in patients born with EA are common and lead to decreased quality of life. Oesophageal motility disorders are probably ubiquitous in patients after undergoing EA repair and often underlie these complications and comorbidities. The implementation of several new diagnostic and screening tools in clinical care, including high-resolution impedance manometry, pH-multichannel intraluminal impedance testing and disease-specific quality of life questionnaires now provide better insight into these problems and may contribute to better long-term outcomes in the future.