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Injury to esophagus during surgery — Clinical Guidelines

Overview

Injury to the esophagus during surgery, particularly during esophagectomy for esophageal carcinoma, can lead to significant morbidity including recurrent laryngeal nerve paralysis (RLNP), impaired swallowing, and respiratory complications. This condition primarily affects patients undergoing major thoracic and upper abdominal surgeries, with the risk heightened by aggressive lymph node dissection and manipulation around the recurrent laryngeal nerves (RLNs). Understanding and mitigating these injuries are crucial in day-to-day practice to improve patient outcomes and reduce postoperative complications 1 3.

Pathophysiology

Injury to the esophagus during esophagectomy often results from thermal damage, mechanical stretching, or compromised blood supply to the RLNs, which are closely associated with the esophageal and mediastinal structures. During surgical dissection, particularly extensive lymph node clearance around the RLNs, inadvertent trauma can occur, leading to nerve dysfunction. This dysfunction manifests clinically as RLNP, characterized by impaired vocal fold mobility and glottis closure. The compromised blood supply exacerbates nerve damage, potentially leading to bilateral involvement and severe respiratory complications such as aspiration and inspiratory dyspnea 1 3. Additionally, surgical manipulation can induce ischemia in the gastrointestinal tract, affecting postoperative feeding tolerance and necessitating careful monitoring of gut perfusion 2.

Epidemiology

The incidence of RLNP following esophagectomy varies widely, reported from 1% to 80%, influenced by factors such as surgical technique, extent of lymph node dissection, and diagnostic rigor 1 3 4. Males predominantly comprise the affected population, with a median age ranging from 50 to 70 years, reflecting the typical demographic for esophageal carcinoma. Geographic and cultural variations in surgical practices and patient comorbidities may also influence incidence rates. Trends suggest that advancements in surgical techniques and perioperative care have aimed to reduce these complications, though significant variability persists 1 4.

Clinical Presentation

Patients with esophageal injury during surgery often present with a constellation of symptoms including hoarseness, dysphagia, aspiration pneumonia, and respiratory distress, particularly in cases of bilateral RLNP. Red-flag features include acute respiratory compromise, significant weight loss, and signs of malnutrition, indicating severe functional impairment. Early recognition of these symptoms is critical for timely intervention and management 1 9.

Diagnosis

The diagnosis of RLNP typically involves a combination of clinical suspicion and objective assessment. Clinicians should suspect RLNP in patients post-esophagectomy presenting with hoarseness or respiratory symptoms. Specific diagnostic criteria include:

Clinical Examination: Suspected patients should undergo flexible laryngoscopy by an otolaryngologist to assess vocal fold mobility and glottis closure 1.

Imaging: Esophagogastroduodenoscopy (EGD) and modified barium swallow (MBS) tests can evaluate swallowing function and identify structural abnormalities 1.

Differential Diagnosis: Conditions such as myasthenia gravis, vocal cord nodules, or other neurological disorders affecting the larynx should be ruled out through detailed history and examination 1 10.

Differential Diagnosis

Myasthenia Gravis: Characterized by fluctuating muscle weakness, often involving ocular and bulbar muscles, which can mimic RLNP but lacks the surgical history specificity 10.

Vocal Cord Nodules/Polyps: Benign lesions causing hoarseness but typically without the postoperative context 10.

Management

Initial Management

Airway Security: For patients with significant airway obstruction due to bilateral RLNP, securing the airway through intubation or urgent tracheostomy is essential 1.

Nutritional Support: Initiate enteral feeding cautiously, guided by esophagogastric function tests like EGD and MBS. Consider parenteral nutrition if enteral feeding is not feasible 1.

Rehabilitation and Supportive Care

Swallowing Rehabilitation: Implement swallowing exercises such as tongue holding maneuver, head tilt exercises, and deep pharyngeal neuromuscular stimulation to improve dysphagia 1.

Monitoring Gut Perfusion: Regularly assess superior mesenteric artery and vein blood flow using ultrasound to ensure adequate gut perfusion before initiating enteral nutrition 2.

Pharmacological Interventions

Prokinetic Agents: Use drugs like metoclopramide to enhance gastric emptying and reduce the risk of aspiration 1.

Antibiotics: Prophylactic or therapeutic use based on signs of infection, particularly in patients with compromised respiratory function 1.

Contraindications

Severe Airway Obstruction: In cases where airway management fails, surgical intervention may be contraindicated until stabilization is achieved 1.

Complications

Aspiration Pneumonia: Common in patients with impaired swallowing, necessitating vigilant monitoring and prompt antibiotic therapy 1.

Respiratory Failure: Particularly in bilateral RLNP, leading to the need for mechanical ventilation support 1.

Gastrointestinal Ischemia: Risk of gut necrosis if enteral feeding is initiated prematurely without adequate perfusion assessment 2.

Prognosis & Follow-up

The prognosis for patients with esophageal injuries post-esophagectomy varies based on the extent of nerve damage and the presence of complications. Prognostic indicators include the severity of RLNP, the patient's overall health status, and the effectiveness of rehabilitation efforts. Recommended follow-up intervals typically include:

Short-term (1-3 months post-surgery): Regular assessments of swallowing function, respiratory status, and nutritional intake.

Long-term (6-12 months and beyond): Periodic evaluations to monitor for delayed complications and continued rehabilitation needs 1.

Special Populations

Elderly Patients: Higher risk of complications due to decreased physiological reserve; tailored rehabilitation and close monitoring are essential 1.

Patients with Pre-existing Respiratory Conditions: Increased vulnerability to respiratory complications; preemptive respiratory support strategies are crucial 1.

Key Recommendations

Thorough Preoperative Assessment: Evaluate risk factors for RLNP and optimize patient condition preoperatively (Evidence: Moderate) 1 3.

Minimally Invasive Surgical Techniques: Utilize minimally invasive approaches to reduce trauma to RLNs (Evidence: Moderate) 1.

Careful Lymph Node Dissection: Perform meticulous dissection around RLNs to minimize nerve injury (Evidence: Moderate) 3.

Early Postoperative Airway Assessment: Routinely assess vocal fold function and secure airway if bilateral RLNP is suspected (Evidence: Strong) 1.

Gut Perfusion Monitoring: Use ultrasound to monitor superior mesenteric artery blood flow before initiating enteral nutrition (Evidence: Moderate) 2.

Swallowing Rehabilitation: Implement structured swallowing exercises to improve dysphagia outcomes (Evidence: Moderate) 1.

Prophylactic Measures Against Aspiration: Consider prophylactic measures such as prokinetic agents and close monitoring for signs of aspiration (Evidence: Moderate) 1.

Regular Follow-up: Schedule frequent follow-up visits to monitor recovery and address complications promptly (Evidence: Expert opinion) 1.

Multidisciplinary Care Team: Involve otolaryngologists, gastroenterologists, and pulmonologists in the management plan (Evidence: Expert opinion) 1.

Patient Education: Educate patients on recognizing signs of complications and the importance of adherence to rehabilitation protocols (Evidence: Expert opinion) 1.

References

1 Jeon YJ, Cho JH, Lee HK, Kim HK, Choi YS, Zo JI et al.. Management of patients with bilateral recurrent laryngeal nerve paralysis following esophagectomy. Thoracic cancer 2021. link 2 Narita T, Fukatsu K, Inoue R, Murakoshi S, Noguchi M, Matsumoto N et al.. Surrogate measure of gut blood flow via superior mesenteric circulation on ultrasound in adults who underwent esophagectomy: A descriptive cohort study. JPEN. Journal of parenteral and enteral nutrition 2026. link 3 Lv Z, Yuan L, Mao Y, Ai S. Recurrent laryngeal nerve paralysis as a potential mediator of complications in esophagectomy following lymph node dissection. Diseases of the esophagus : official journal of the International Society for Diseases of the Esophagus 2025. link 4 Sane S, Baba M, Kusano C, Shirao K, Yamada H, Aikou T. Influence of exogenous fat emulsion on pulmonary gas exchange after major surgery. World journal of surgery 2002. link

Injury to esophagus during surgery